/* ============================================================
   MAIN.CSS - Portafolio Profesional Valente Arellano
   Sistema de diseño minimalista con esquinas 100% rectas
   Inspirado en fuegocaminaconmigo.com
   ============================================================ */

/* ============================================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ============================================================ */
:root {
    /* Colors - Primary */
    --color-primary: #000000;
    --color-bg: #ffffff;
    --color-text: #32373c;
    --color-text-light: #6b7280;

    /* Colors - Accent */
    --color-accent: #61a229;
    --color-accent-hover: #4e8221;
    --color-accent-light: #e8f5e0;

    /* Hero-derived highlight (brighter indigo from hero background palette) */
    --color-hero-highlight: #6b5bff;
    --color-hero-highlight-glow: rgba(107, 91, 255, 0.26);

    /* Colors - Grays */
    --color-gray-100: #f7f7f7;
    --color-gray-200: #dedfe0;
    --color-gray-300: #b2b2b3;
    --color-gray-400: #8b8b8b;
    --color-gray-500: #6b6b6b;
    --color-gray-600: #4a4a4a;
    --color-gray-700: #32373c;
    --color-gray-800: #1a1a1a;
    --color-gray-900: #000000;

    /* Colors - Semantic */
    --color-success: #61a229;
    --color-error: #dc2626;
    --color-warning: #f59e0b;
    --color-info: #3b82f6;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-family-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;

    /* Font Sizes - Mobile First */
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 1.875rem;    /* 30px */
    --font-size-4xl: 2.25rem;     /* 36px */
    --font-size-5xl: 3rem;        /* 48px */
    --font-size-6xl: 3.75rem;     /* 60px */

    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Line Heights */
    --line-height-tight: 1.2;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 2;

    /* Spacing - 8px base system */
    --spacing-0: 0;
    --spacing-1: 0.25rem;   /* 4px */
    --spacing-2: 0.5rem;    /* 8px */
    --spacing-3: 0.75rem;   /* 12px */
    --spacing-4: 1rem;      /* 16px */
    --spacing-5: 1.25rem;   /* 20px */
    --spacing-6: 1.5rem;    /* 24px */
    --spacing-8: 2rem;      /* 32px */
    --spacing-10: 2.5rem;   /* 40px */
    --spacing-12: 3rem;     /* 48px */
    --spacing-16: 4rem;     /* 64px */
    --spacing-20: 5rem;     /* 80px */
    --spacing-24: 6rem;     /* 96px */
    --spacing-32: 8rem;     /* 128px */

    /* Spacing aliases */
    --spacing-xs: var(--spacing-2);
    --spacing-sm: var(--spacing-3);
    --spacing-md: var(--spacing-4);
    --spacing-lg: var(--spacing-6);
    --spacing-xl: var(--spacing-8);
    --spacing-2xl: var(--spacing-12);
    --spacing-3xl: var(--spacing-16);
    --spacing-4xl: var(--spacing-24);

    /* Layout */
    --container-max: 1200px;
    --container-narrow: 800px;
    --container-wide: 1400px;
    --container-padding: var(--spacing-4);

    /* Borders - NO BORDER RADIUS (esquinas 100% rectas) */
    --border-width: 1px;
    --border-width-thick: 2px;
    --border-color: var(--color-gray-200);
    --border-color-dark: var(--color-gray-300);

    /* Shadows - Subtle and minimal */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;

    /* Z-index scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-tooltip: 600;
    --z-toast: 700;

    /* Header */
    --header-height: 72px;
    --header-height-mobile: 60px;
}

/* ============================================================
   CSS RESET / NORMALIZE
   ============================================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Remove default list styles */
ul, ol {
    list-style: none;
}

/* Use when you want bullets back (global reset removes them) */
.list-bullets {
    list-style: disc;
    list-style-position: outside;
    padding-left: var(--spacing-6);
    margin: 0;
}

.list-bullets li {
    margin-bottom: var(--spacing-2);
}

.list-bullets li:last-child {
    margin-bottom: 0;
}

/* Remove default link styles */
a {
    color: inherit;
    text-decoration: none;
}

/* Remove default button styles */
button {
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: inherit;
}

/* Images */
img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
    height: auto;
}

/* Forms */
input, button, textarea, select {
    font: inherit;
}

/* Remove animations for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html {
        scroll-behavior: auto;
    }
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-primary);
    margin-bottom: var(--spacing-4);
}

h1 {
    font-size: var(--font-size-4xl);
}

h2 {
    font-size: var(--font-size-3xl);
}

h3 {
    font-size: var(--font-size-2xl);
}

h4 {
    font-size: var(--font-size-xl);
}

h5 {
    font-size: var(--font-size-lg);
}

h6 {
    font-size: var(--font-size-base);
}

p {
    margin-bottom: var(--spacing-4);
}

p:last-child {
    margin-bottom: 0;
}

strong, b {
    font-weight: var(--font-weight-semibold);
}

small {
    font-size: var(--font-size-sm);
}

/* Text utilities */
.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.text-3xl { font-size: var(--font-size-3xl); }
.text-4xl { font-size: var(--font-size-4xl); }

.font-light { font-weight: var(--font-weight-light); }
.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

.text-primary { color: var(--color-primary); }
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-text-light); }
.text-white { color: var(--color-bg); }

.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

.uppercase { text-transform: uppercase; }
.lowercase { text-transform: lowercase; }
.capitalize { text-transform: capitalize; }

.tracking-tight { letter-spacing: -0.025em; }
.tracking-normal { letter-spacing: 0; }
.tracking-wide { letter-spacing: 0.025em; }
.tracking-wider { letter-spacing: 0.05em; }
.tracking-widest { letter-spacing: 0.1em; }

/* ============================================================
   LAYOUT
   ============================================================ */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.container-narrow {
    max-width: var(--container-narrow);
}

.container-wide {
    max-width: var(--container-wide);
}

/* Section spacing */
.section {
    padding-top: var(--spacing-10);
    padding-bottom: var(--spacing-10);
}

.section-sm {
    padding-top: var(--spacing-8);
    padding-bottom: var(--spacing-8);
}

.section-lg {
    padding-top: var(--spacing-20);
    padding-bottom: var(--spacing-20);
}

/* Flexbox utilities */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }

.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.items-stretch { align-items: stretch; }

.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }

.gap-1 { gap: var(--spacing-1); }
.gap-2 { gap: var(--spacing-2); }
.gap-3 { gap: var(--spacing-3); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }
.gap-8 { gap: var(--spacing-8); }

.flex-1 { flex: 1 1 0%; }
.flex-auto { flex: 1 1 auto; }
.flex-none { flex: none; }

/* Grid utilities */
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* Spacing utilities */
.m-0 { margin: var(--spacing-0); }
.m-1 { margin: var(--spacing-1); }
.m-2 { margin: var(--spacing-2); }
.m-4 { margin: var(--spacing-4); }
.m-auto { margin: auto; }

.mt-0 { margin-top: var(--spacing-0); }
.mt-2 { margin-top: var(--spacing-2); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }
.mt-12 { margin-top: var(--spacing-12); }
.mt-16 { margin-top: var(--spacing-16); }

.mb-0 { margin-bottom: var(--spacing-0); }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }
.mb-12 { margin-bottom: var(--spacing-12); }
.mb-16 { margin-bottom: var(--spacing-16); }

.p-0 { padding: var(--spacing-0); }
.p-2 { padding: var(--spacing-2); }
.p-4 { padding: var(--spacing-4); }
.p-6 { padding: var(--spacing-6); }
.p-8 { padding: var(--spacing-8); }

.py-2 { padding-top: var(--spacing-2); padding-bottom: var(--spacing-2); }
.py-4 { padding-top: var(--spacing-4); padding-bottom: var(--spacing-4); }
.py-8 { padding-top: var(--spacing-8); padding-bottom: var(--spacing-8); }
.py-12 { padding-top: var(--spacing-12); padding-bottom: var(--spacing-12); }
.py-16 { padding-top: var(--spacing-16); padding-bottom: var(--spacing-16); }

.px-2 { padding-left: var(--spacing-2); padding-right: var(--spacing-2); }
.px-4 { padding-left: var(--spacing-4); padding-right: var(--spacing-4); }
.px-6 { padding-left: var(--spacing-6); padding-right: var(--spacing-6); }
.px-8 { padding-left: var(--spacing-8); padding-right: var(--spacing-8); }

/* Width utilities */
.w-full { width: 100%; }
.w-auto { width: auto; }
.max-w-full { max-width: 100%; }
.min-h-screen { min-height: 100vh; }

/* Display utilities */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.inline { display: inline; }

/* Position utilities */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

/* ============================================================
   HEADER / NAVIGATION
   ============================================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height-mobile);
    background: linear-gradient(135deg, #f9fbff 0%, #f6f7fb 50%, #f9f9fc 100%);
    border-bottom: var(--border-width) solid var(--border-color);
    z-index: var(--z-fixed);
    overflow: hidden;
    isolation: isolate;
    transition: background-color var(--transition-normal), box-shadow var(--transition-normal);
}

.header.scrolled {
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    position: relative;
    z-index: 1;
}

.logo {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

.logo:hover {
    color: var(--color-hero-highlight);
}

/* Desktop Navigation */
.nav {
    display: none;
}

.nav-list {
    display: flex;
    gap: var(--spacing-8);
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--spacing-2) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-hero-highlight);
    transition: width var(--transition-normal);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-hero-highlight);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Language Selector */
.lang-selector {
    display: flex;
    gap: var(--spacing-1);
    margin-left: var(--spacing-6);
}

.lang-btn {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-light);
    padding: var(--spacing-1) var(--spacing-2);
    text-transform: uppercase;
    transition: color var(--transition-fast);
}

.lang-btn:hover,
.lang-btn.active {
    color: var(--color-primary);
}

.lang-btn.active {
    font-weight: var(--font-weight-bold);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 24px;
    height: 24px;
    padding: 0;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Navigation */
.mobile-nav {
    position: fixed;
    top: var(--header-height-mobile);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-bg);
    padding: var(--spacing-8) var(--container-padding);
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    overflow-y: auto;
    z-index: var(--z-modal);
}

.mobile-nav.open {
    transform: translateX(0);
}

.mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.mobile-nav-link {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    display: block;
    padding: var(--spacing-2) 0;
    border-bottom: var(--border-width) solid var(--border-color);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    color: var(--color-accent);
}

.mobile-lang-selector {
    display: flex;
    gap: var(--spacing-4);
    margin-top: var(--spacing-8);
    padding-top: var(--spacing-8);
    border-top: var(--border-width) solid var(--border-color);
}

.mobile-lang-btn {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-light);
    text-transform: uppercase;
}

.mobile-lang-btn.active {
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
}

/* Body padding for fixed header */
body {
    padding-top: var(--header-height-mobile);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    background-color: var(--color-primary);
    color: var(--color-bg);
    padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-12);
}

.footer-col h4 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-bg);
    margin-bottom: var(--spacing-4);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.footer-link {
    font-size: var(--font-size-sm);
    color: var(--color-gray-300);
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-bg);
}

.footer-bottom {
    padding-top: var(--spacing-8);
    border-top: var(--border-width) solid var(--color-gray-700);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    align-items: center;
    text-align: center;
}

.footer-copyright {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
}

.footer-social {
    display: flex;
    gap: var(--spacing-4);
}

.footer-social a {
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.footer-social a:hover {
    color: var(--color-bg);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: var(--border-width-thick) solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    /* NO BORDER RADIUS */
}

.btn:focus-visible {
    outline: 0;
    box-shadow: 0 0 0 3px var(--color-hero-highlight-glow);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-bg);
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background-color: var(--color-hero-highlight);
    border-color: var(--color-hero-highlight);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-bg);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-outline:hover {
    background-color: var(--color-hero-highlight);
    color: var(--color-bg);
    border-color: var(--color-hero-highlight);
}

.btn-text:hover {
    color: var(--color-hero-highlight);
}

.btn-text {
    background: transparent;
    color: var(--color-primary);
    border-color: transparent;
    padding: var(--spacing-2) var(--spacing-2);
}

.btn-accent {
    background-color: var(--color-accent);
    color: var(--color-bg);
    border-color: var(--color-accent);
}

.btn-accent:hover {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
}

.btn-ghost {
    background-color: transparent;
    color: var(--color-text);
    border-color: transparent;
}

.btn-ghost:hover {
    color: var(--color-primary);
}

.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-base);
}

.btn-sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-xs);
}

.btn-icon {
    padding: var(--spacing-3);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ============================================================
   CARDS
   ============================================================ */
.card {
    background-color: var(--color-bg);
    border: var(--border-width) solid var(--border-color);
    overflow: hidden;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    /* NO BORDER RADIUS */
}

.card:hover {
    border-color: var(--color-hero-highlight);
    box-shadow: 0 0 0 3px var(--color-hero-highlight-glow);
}

.card-image {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    background-color: var(--color-gray-100);
}

.card-content {
    padding: var(--spacing-6);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-2);
    color: var(--color-primary);
}

.card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-4);
}

.card-text {
    font-size: var(--font-size-base);
    color: var(--color-text);
    line-height: var(--line-height-relaxed);
}

.card-footer {
    padding: var(--spacing-4) var(--spacing-6);
    border-top: var(--border-width) solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* ============================================================
   BADGES / TAGS
   ============================================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-2);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    /* NO BORDER RADIUS */
}

.badge-primary {
    background-color: var(--color-primary);
    color: var(--color-bg);
}

.badge-secondary {
    background-color: var(--color-gray-100);
    color: var(--color-text);
}

.badge-accent {
    background-color: var(--color-accent-light);
    color: var(--color-accent-hover);
}

.badge-outline {
    background-color: transparent;
    border: var(--border-width) solid var(--color-gray-300);
    color: var(--color-text);
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-sm);
    background-color: var(--color-gray-100);
    color: var(--color-text);
    border: var(--border-width) solid var(--border-color);
    transition: all var(--transition-fast);
    /* NO BORDER RADIUS */
}

.tag:hover {
    background-color: var(--color-primary);
    color: var(--color-bg);
    border-color: var(--color-primary);
}

.tag.active {
    background-color: var(--color-primary);
    color: var(--color-bg);
    border-color: var(--color-primary);
}

.tag-row,
.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.active-projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

.home-projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

.active-project-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-4);
}

.active-project-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    margin: 0;
}

.active-project-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    margin-top: var(--spacing-6);
}

.status-pill {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border: var(--border-width) solid var(--border-color);
    background: var(--color-gray-100);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-light);
    white-space: nowrap;
}

/* ============================================================
   FORMS
   ============================================================ */
.form-group {
    margin-bottom: var(--spacing-6);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    margin-bottom: var(--spacing-2);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    border: var(--border-width) solid var(--border-color);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    /* NO BORDER RADIUS */
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-gray-400);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-error {
    font-size: var(--font-size-sm);
    color: var(--color-error);
    margin-top: var(--spacing-1);
}

.form-input.error,
.form-textarea.error {
    border-color: var(--color-error);
}

.form-hint {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-top: var(--spacing-1);
}

/* ============================================================
   BREADCRUMBS
   ============================================================ */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-8);
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.breadcrumb-item:not(:last-child)::after {
    content: '/';
    color: var(--color-gray-400);
}

.breadcrumb-link {
    color: var(--color-text-light);
    transition: color var(--transition-fast);
}

.breadcrumb-link:hover {
    color: var(--color-primary);
}

.breadcrumb-current {
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
    /* Keep hero compact (avoid 100vh empty space). */
    min-height: auto;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    padding: calc(var(--spacing-12) * 1.1) 0 var(--spacing-10);
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #fdf7ff 0%, #f7fafd 50%, #fff7f2 100%);
    isolation: isolate;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-8);
    position: relative;
    z-index: 1;
}

.hero-copy {
    max-width: 800px;
}

.hero-qr {
    width: min(220px, 100%);
    padding: var(--spacing-4);
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(6px);
}

.hero-qr-link {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.hero-qr-img {
    width: 100%;
    height: auto;
    border: var(--border-width) solid var(--border-color);
    background: var(--color-bg);
}

.hero-qr-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    letter-spacing: 0.02em;
}

.hero-qr-meta {
    display: grid;
    gap: var(--spacing-1);
}

.hero-tagline {
    font-size: clamp(var(--font-size-3xl), 8vw, var(--font-size-6xl));
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-primary);
    margin-bottom: var(--spacing-6);
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-8);
    max-width: 600px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
}

canvas[data-pixel-background] {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.5;
    mix-blend-mode: normal;
    filter: none;
    image-rendering: pixelated;
}

/* CTA panel */
.cta-panel {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-6);
    padding: var(--spacing-8);
    border: var(--border-width) solid var(--border-color);
    background-color: var(--color-gray-100);
}

/* ============================================================
   STATS
   ============================================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-6);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-6);
    border: var(--border-width) solid var(--border-color);
}

.stat-value {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--spacing-2);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ============================================================
   SECTION HEADERS
   ============================================================ */
.section-header {
    margin-bottom: var(--spacing-8);
}

.section-header.center {
    text-align: center;
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-4);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    max-width: 600px;
}

.section-header.center .section-subtitle {
    margin-left: auto;
    margin-right: auto;
}

/* Eyebrow label */
.eyebrow {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-2);
}

/* Make section "kicker" clearly distinct from subtitle (without affecting card/category eyebrows). */
.section-header .eyebrow {
    color: var(--color-hero-highlight);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.18em;
}

.section-header .eyebrow::after {
    content: '';
    display: block;
    width: 52px;
    height: 2px;
    background: var(--color-hero-highlight);
    margin-top: var(--spacing-3);
    opacity: 0.9;
}

.section-header.center .eyebrow::after {
    margin-left: auto;
    margin-right: auto;
}

/* ============================================================
   METHODOLOGY (HOME)
   ============================================================ */
.methodology-process {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
    counter-reset: methodology-step;
}

.methodology-step {
    position: relative;
    padding: var(--spacing-8);
    border-left-width: var(--border-width-thick);
    border-left-color: var(--color-primary);
}

.methodology-step::before {
    counter-increment: methodology-step;
    content: counter(methodology-step, decimal-leading-zero);
    position: absolute;
    top: var(--spacing-6);
    right: var(--spacing-6);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    letter-spacing: 0.08em;
}

.methodology-step::after {
    content: '';
    display: none;
}

/* ============================================================
   COMPANY MARQUEE (HOME)
   ============================================================ */
.company-card {
    padding: var(--spacing-8);
}

.company-name {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-3);
}

.company-marquees {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-4);
}

.company-marquee {
    position: relative;
    overflow: hidden;
    padding: var(--spacing-4) 0;
    border-top: var(--border-width) solid var(--border-color);
    border-bottom: var(--border-width) solid var(--border-color);
    background: linear-gradient(135deg, #fbfbfd 0%, #f7f7f8 50%, #fbfbfd 100%);
    /* Fade edges to keep it elegant */
    -webkit-mask-image: linear-gradient(to right, transparent 0%, #000 12%, #000 88%, transparent 100%);
    mask-image: linear-gradient(to right, transparent 0%, #000 12%, #000 88%, transparent 100%);
}

.company-marquee-track {
    --marquee-duration: 28s;
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    width: max-content;
    will-change: transform;
    animation: company-marquee var(--marquee-duration) linear infinite;
}

.company-marquee[data-direction="right"] .company-marquee-track {
    animation-direction: reverse;
}

.company-marquees:hover .company-marquee-track {
    animation-play-state: paused;
}

.company-chip {
    --chip-float-y: 0px;
    --chip-rot: 0deg;
    --chip-float-d: 9s;
    --chip-float-delay: 0s;

    display: inline-flex;
    align-items: center;
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-primary);
    background: var(--color-bg);
    border: var(--border-width) solid var(--border-color);
    white-space: nowrap;
    transform: translateY(var(--chip-float-y)) rotate(var(--chip-rot));
    animation: company-chip-float var(--chip-float-d) ease-in-out infinite alternate;
    animation-delay: var(--chip-float-delay);
}

.company-chip:hover {
    border-color: var(--color-primary);
}

@keyframes company-marquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

@keyframes company-chip-float {
    from { transform: translateY(calc(var(--chip-float-y) * -1)) rotate(calc(var(--chip-rot) * -1)); }
    to { transform: translateY(var(--chip-float-y)) rotate(var(--chip-rot)); }
}

/* ============================================================
   TECHNOLOGIES COLLAGE (HOME)
   ============================================================ */
.tech-collage {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    padding: var(--spacing-6);
    border-top: var(--border-width) solid var(--border-color);
    background-image:
        radial-gradient(circle at 20% 10%, rgba(0,0,0,0.05) 0 1px, transparent 1px),
        radial-gradient(circle at 80% 30%, rgba(0,0,0,0.04) 0 1px, transparent 1px),
        radial-gradient(circle at 40% 80%, rgba(0,0,0,0.04) 0 1px, transparent 1px);
    background-size: 120px 120px, 160px 160px, 140px 140px;
    background-position: 0 0, 40px 20px, 20px 60px;
    /* No internal scrollbars; let the card grow naturally. */
    max-height: none;
    overflow: visible;
}

.tech-chip {
    --chip-rot: 0deg;
    --chip-y: 0px;
    --chip-float-d: 10s;
    --chip-float-delay: 0s;

    display: inline-flex;
    align-items: center;
    padding: 6px 10px;
    font-size: 0.78rem;
    line-height: 1.1;
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    background: var(--color-bg);
    border: var(--border-width) solid var(--border-color);
    white-space: nowrap;
    transform: translateY(var(--chip-y)) rotate(var(--chip-rot));
    transition: border-color var(--transition-fast), color var(--transition-fast), background-color var(--transition-fast);
    animation: tech-chip-float var(--chip-float-d) ease-in-out infinite alternate;
    animation-delay: var(--chip-float-delay);
}

.tech-chip:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.tech-chip--prime {
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    border-color: var(--color-gray-300);
}

.tech-chip--ghost {
    background: var(--color-gray-100);
}

@keyframes tech-chip-float {
    from { transform: translateY(calc(var(--chip-y) * -1)) rotate(calc(var(--chip-rot) * -1)); }
    to { transform: translateY(var(--chip-y)) rotate(var(--chip-rot)); }
}

@media (prefers-reduced-motion: reduce) {
    .tech-chip {
        animation: none !important;
    }
}

/* ============================================================
   KNOWLEDGE PAGE
   ============================================================ */
.knowledge-page {
    background:
        radial-gradient(1200px 520px at 20% -10%, rgba(107, 91, 255, 0.08), transparent 55%),
        radial-gradient(900px 420px at 95% 5%, rgba(107, 91, 255, 0.05), transparent 60%),
        linear-gradient(180deg, #fafbfd 0%, #f7f9fc 35%, #f9fafc 100%);
}

.knowledge-hero {
    position: relative;
    overflow: hidden;
    padding: calc(var(--spacing-12) * 1.05) 0 var(--spacing-10);
    border-bottom: var(--border-width) solid var(--border-color);
    background: linear-gradient(140deg, #fefeff 0%, #f6f8fd 50%, #fbfcff 100%);
    isolation: isolate;
}

.knowledge-hero-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

.knowledge-hero .section-header {
    margin-bottom: 0;
}

.knowledge-hero .section-subtitle {
    max-width: 900px;
}

.knowledge-hero-highlights {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-4);
}

.knowledge-highlight {
    padding: var(--spacing-5);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(4px);
}

.knowledge-highlight .eyebrow {
    margin-bottom: var(--spacing-3);
}

.knowledge-highlight .text-muted {
    margin: 0;
}

.knowledge-content {
    padding-top: var(--spacing-10);
    padding-bottom: var(--spacing-12);
}

.knowledge-block + .knowledge-block {
    margin-top: var(--spacing-12);
}

.knowledge-timeline {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-5);
    counter-reset: knowledge-step;
}

.knowledge-entry {
    position: relative;
    padding: var(--spacing-6);
}

.knowledge-entry::before {
    counter-increment: knowledge-step;
    content: counter(knowledge-step, decimal-leading-zero);
    position: absolute;
    top: var(--spacing-4);
    right: var(--spacing-4);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-xs);
    letter-spacing: 0.1em;
    color: var(--color-gray-400);
}

.knowledge-entry h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-3);
}

.knowledge-meta {
    display: inline-flex;
    align-items: center;
    margin: 0 0 var(--spacing-4);
    padding: 4px 10px;
    font-size: var(--font-size-xs);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-hero-highlight);
    border: var(--border-width) solid rgba(107, 91, 255, 0.24);
    background: rgba(107, 91, 255, 0.07);
}

.knowledge-entry .text-muted + .list-bullets {
    margin-top: var(--spacing-4);
}

.knowledge-integrated-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-5);
}

.knowledge-integrated-side {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-5);
}

.knowledge-panel {
    padding: var(--spacing-6);
}

.knowledge-panel .text-muted {
    margin: 0;
}

.knowledge-panel-label {
    margin: 0 0 var(--spacing-4);
    font-size: var(--font-size-sm);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-text-light);
}

.knowledge-evolution-card {
    padding: var(--spacing-6);
}

.knowledge-evolution-list {
    list-style: none;
    margin: 0;
    padding: 0;
    counter-reset: evo-step;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-3);
}

.knowledge-evolution-list li {
    position: relative;
    margin: 0;
    padding: var(--spacing-4) var(--spacing-4) var(--spacing-4) calc(var(--spacing-8) + var(--spacing-2));
    border: var(--border-width) solid var(--border-color);
    background: linear-gradient(90deg, rgba(107, 91, 255, 0.06), rgba(107, 91, 255, 0.01));
}

.knowledge-evolution-list li::before {
    counter-increment: evo-step;
    content: counter(evo-step);
    position: absolute;
    top: 50%;
    left: var(--spacing-4);
    transform: translateY(-50%);
    width: 24px;
    height: 24px;
    display: grid;
    place-items: center;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: #ffffff;
    background: var(--color-hero-highlight);
}

.knowledge-conclusion {
    margin: var(--spacing-4) 0 0;
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
}

/* ============================================================
   EXPERTISE PAGE
   ============================================================ */
.expertise-page {
    background:
        radial-gradient(1100px 520px at 15% -10%, rgba(107, 91, 255, 0.08), transparent 58%),
        linear-gradient(180deg, #fbfbfd 0%, #f7f9fc 45%, #fafbfd 100%);
}

.expertise-hero {
    position: relative;
    overflow: hidden;
    padding: calc(var(--spacing-12) * 1.05) 0 var(--spacing-10);
    border-bottom: var(--border-width) solid var(--border-color);
    background: linear-gradient(140deg, #fefeff 0%, #f6f8fd 50%, #fbfcff 100%);
    isolation: isolate;
}

.expertise-hero-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

.expertise-hero .section-header {
    margin-bottom: 0;
}

.expertise-hero-side {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-4);
}

.expertise-highlight {
    padding: var(--spacing-5);
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(4px);
}

.expertise-content {
    padding-top: var(--spacing-10);
    padding-bottom: var(--spacing-12);
}

.expertise-block + .expertise-block {
    margin-top: var(--spacing-12);
}

.expertise-panel {
    padding: var(--spacing-6);
}

.expertise-panel .text-muted + .text-muted {
    margin-top: var(--spacing-4);
}

.expertise-path-list {
    list-style: none;
    margin: 0;
    padding: 0;
    counter-reset: expertise-path;
    display: grid;
    gap: var(--spacing-3);
}

.expertise-path-list li {
    counter-increment: expertise-path;
    position: relative;
    margin: 0;
    padding: var(--spacing-4) var(--spacing-4) var(--spacing-4) calc(var(--spacing-8) + var(--spacing-2));
    border: var(--border-width) solid var(--border-color);
    background: linear-gradient(90deg, rgba(107, 91, 255, 0.06), rgba(107, 91, 255, 0.01));
}

.expertise-path-list li::before {
    content: counter(expertise-path);
    position: absolute;
    top: 50%;
    left: var(--spacing-4);
    transform: translateY(-50%);
    width: 24px;
    height: 24px;
    display: grid;
    place-items: center;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: #fff;
    background: var(--color-hero-highlight);
}

.expertise-stack-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-4);
}

.expertise-stack-item {
    padding: var(--spacing-5);
}

.expertise-stack-item .text-muted {
    margin: 0;
}

.expertise-stack-label {
    margin: 0 0 var(--spacing-3);
    font-size: var(--font-size-sm);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-hero-highlight);
    font-weight: var(--font-weight-semibold);
}

/* ============================================================
   ADVISORY PAGE
   ============================================================ */
.advisory-page {
    background:
        radial-gradient(1000px 500px at 85% -15%, rgba(107, 91, 255, 0.08), transparent 60%),
        linear-gradient(180deg, #fbfcff 0%, #f8f9fd 42%, #fafbfd 100%);
}

.advisory-hero {
    position: relative;
    overflow: hidden;
    padding: calc(var(--spacing-12) * 1.05) 0 var(--spacing-10);
    border-bottom: var(--border-width) solid var(--border-color);
    background: linear-gradient(150deg, #fefeff 0%, #f7f8fd 50%, #fbfcff 100%);
    isolation: isolate;
}

.advisory-hero-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

.advisory-hero .section-header {
    margin-bottom: 0;
}

.advisory-hero-highlights {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-4);
}

.advisory-highlight {
    padding: var(--spacing-5);
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(4px);
}

.advisory-content {
    padding-top: var(--spacing-10);
    padding-bottom: var(--spacing-12);
}

.advisory-block + .advisory-block {
    margin-top: var(--spacing-12);
}

.advisory-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-5);
}

.advisory-panel {
    padding: var(--spacing-6);
}

.advisory-panel .text-muted + .text-muted {
    margin-top: var(--spacing-4);
}

.advisory-panel h3 {
    margin-bottom: var(--spacing-3);
}

.advisory-principles {
    list-style: none;
    margin: var(--spacing-5) 0 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.advisory-principles li {
    margin: 0;
    padding: 6px 12px;
    border: var(--border-width) solid rgba(107, 91, 255, 0.24);
    background: rgba(107, 91, 255, 0.08);
    color: var(--color-text);
    font-size: var(--font-size-sm);
}

/* ============================================================
   UTILITY CLASSES
   ============================================================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============================================================
   TRANSITIONS FOR ANIMATED ELEMENTS
   ============================================================ */
.fade-in {
    animation: fadeIn var(--transition-normal) ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-up {
    animation: slideUp var(--transition-normal) ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================================
   LOADING STATES
   ============================================================ */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--color-gray-300);
    border-top-color: var(--color-primary);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ============================================================
   ALERTS / MESSAGES
   ============================================================ */
.alert {
    padding: var(--spacing-4) var(--spacing-6);
    margin-bottom: var(--spacing-4);
    border: var(--border-width) solid;
    /* NO BORDER RADIUS */
}

.alert-success {
    background-color: var(--color-accent-light);
    border-color: var(--color-accent);
    color: var(--color-accent-hover);
}

.alert-error {
    background-color: #fef2f2;
    border-color: var(--color-error);
    color: var(--color-error);
}

.alert-info {
    background-color: #eff6ff;
    border-color: var(--color-info);
    color: var(--color-info);
}

.alert-warning {
    background-color: #fffbeb;
    border-color: var(--color-warning);
    color: #b45309;
}

/* ============================================================
   ASSISTANT MODAL (Flowise Full Chat)
   ============================================================ */
body.assistant-open {
    overflow: hidden;
}

.assistant-overlay {
    position: fixed;
    inset: 0;
    z-index: 5000;
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
    padding: var(--spacing-4);
    background: rgba(10, 12, 20, 0.42);
    opacity: 0;
    pointer-events: none;
    transition: opacity 180ms ease;
}

.assistant-overlay.is-open {
    opacity: 1;
    pointer-events: auto;
}

.assistant-panel {
    width: min(420px, calc(100vw - (var(--spacing-4) * 2)));
    height: min(720px, calc(100vh - (var(--spacing-4) * 2)));
    background: #ffffff;
    border: 1px solid rgba(107, 91, 255, 0.24);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.assistant-panel-head {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: var(--spacing-2);
    padding: var(--spacing-3);
    background: linear-gradient(180deg, rgba(107, 91, 255, 0.08), rgba(255, 255, 255, 0.0));
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.assistant-panel-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-3);
}

.assistant-panel-actions {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
}

.assistant-reset {
    width: 40px;
    height: 40px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.assistant-panel-title {
    font-weight: 700;
    letter-spacing: 0.01em;
    color: var(--color-hero-highlight, #6b5bff);
}

.assistant-panel-body {
    flex: 1;
    min-height: 0;
    position: relative;
}

.assistant-intro {
    padding: 10px 12px;
    border: 1px solid rgba(107, 91, 255, 0.18);
    background: rgba(107, 91, 255, 0.06);
    color: var(--color-text, #32373c);
    font-size: 13px;
    line-height: 1.35;
}

.assistant-panel-body flowise-fullchatbot {
    display: block;
    width: 100%;
    height: 100%;
}

.assistant-loading {
    position: absolute;
    top: var(--spacing-3);
    left: var(--spacing-3);
    right: var(--spacing-3);
    padding: var(--spacing-3);
    border: 1px solid rgba(0, 0, 0, 0.08);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    color: var(--color-text, #32373c);
    font-size: 14px;
}

.assistant-embed-error {
    position: absolute;
    top: var(--spacing-3);
    left: var(--spacing-3);
    right: var(--spacing-3);
    padding: var(--spacing-3);
    border: 1px solid rgba(107, 91, 255, 0.28);
    background: rgba(107, 91, 255, 0.06);
    color: var(--color-text, #32373c);
    font-size: 14px;
}

@media (max-width: 640px) {
    .assistant-overlay {
        align-items: stretch;
        justify-content: stretch;
        padding: 0;
    }

    .assistant-panel {
        width: 100%;
        height: 100%;
        border-radius: 0;
        border-left: 0;
        border-right: 0;
        border-bottom: 0;
    }
}

/* ============================================================
   EXPERTISE PORTRAIT
   ============================================================ */
.expertise-portrait {
    margin: 0;
    border: var(--border-width) solid var(--border-color);
    overflow: hidden;
    position: relative;
    background: #fff;
}

.expertise-portrait-img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    object-position: center top;
    display: block;
    transform: scale(1.01);
}

@media (min-width: 768px) {
    .expertise-portrait-img {
        height: 360px;
    }
}

/* ============================================================
   ACCESS GATE OVERLAY
   ============================================================ */
.access-gate-overlay {
    position: fixed;
    inset: 0;
    z-index: 99999;
    background: var(--color-bg, #fff);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: gateIn 0.3s ease;
}

.access-gate-overlay.access-gate-exit {
    animation: gateOut 0.4s ease forwards;
}

@keyframes gateIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes gateOut {
    from { opacity: 1; }
    to   { opacity: 0; }
}

.access-gate-card {
    text-align: center;
    max-width: 400px;
    padding: var(--spacing-8, 2rem);
}

.access-gate-logo {
    font-size: var(--font-size-2xl, 1.5rem);
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-6, 1.5rem);
    color: var(--color-primary, #000);
}

.access-gate-title {
    font-size: var(--font-size-lg, 1.125rem);
    font-weight: 600;
    margin-bottom: var(--spacing-2, 0.5rem);
    color: var(--color-primary, #000);
}

.access-gate-message {
    font-size: var(--font-size-sm, 0.875rem);
    color: var(--color-text-light, #6b7280);
    margin-bottom: var(--spacing-6, 1.5rem);
}

.access-gate-form {
    margin-bottom: var(--spacing-4, 1rem);
}

.access-gate-input-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-3, 0.75rem);
    justify-content: center;
}

.access-gate-input {
    width: 120px;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--color-gray-300, #b2b2b3);
    font-size: var(--font-size-base, 1rem);
    font-family: var(--font-family-mono, monospace);
    text-align: center;
    letter-spacing: 0.15em;
    transition: border-color 0.2s;
    outline: none;
    background: var(--color-bg, #fff);
    color: var(--color-primary, #000);
}

.access-gate-input:focus {
    border-color: var(--color-primary, #000);
}

.access-gate-btn {
    padding: 0.5rem 1.25rem;
    background: var(--color-primary, #000);
    color: var(--color-bg, #fff);
    border: 1px solid var(--color-primary, #000);
    font-size: var(--font-size-sm, 0.875rem);
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.access-gate-btn:hover {
    opacity: 0.8;
}

.access-gate-error {
    font-size: var(--font-size-xs, 0.75rem);
    color: var(--color-error, #dc2626);
    margin-top: var(--spacing-2, 0.5rem);
    opacity: 0;
    transition: opacity 0.2s;
}

.access-gate-error.visible {
    opacity: 1;
}

.access-gate-hint {
    font-size: var(--font-size-xs, 0.75rem);
    color: var(--color-gray-400, #8b8b8b);
    margin-top: var(--spacing-4, 1rem);
}

/* Shake animation */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%  { transform: translateX(-6px); }
    40%  { transform: translateX(6px); }
    60%  { transform: translateX(-4px); }
    80%  { transform: translateX(4px); }
}

.access-gate-input.shake {
    animation: shake 0.5s ease;
    border-color: var(--color-error, #dc2626);
}

/* Pixel Skater - CSS pixel art */
.access-gate-skater {
    position: relative;
    width: 24px;
    height: 32px;
    flex-shrink: 0;
}

.skater-pixel {
    position: absolute;
    width: 3px;
    height: 3px;
    background: transparent;
    box-shadow:
        /* Head */
        6px 0 var(--color-primary, #000), 9px 0 var(--color-primary, #000),
        3px 3px var(--color-primary, #000), 6px 3px var(--color-primary, #000),
        9px 3px var(--color-primary, #000), 12px 3px var(--color-primary, #000),
        /* Neck */
        6px 6px var(--color-primary, #000), 9px 6px var(--color-primary, #000),
        /* Torso */
        3px 9px var(--color-primary, #000), 6px 9px var(--color-primary, #000),
        9px 9px var(--color-primary, #000), 12px 9px var(--color-primary, #000),
        /* Arms */
        0 12px var(--color-primary, #000), 6px 12px var(--color-primary, #000),
        9px 12px var(--color-primary, #000), 15px 12px var(--color-primary, #000),
        /* Waist */
        6px 15px var(--color-primary, #000), 9px 15px var(--color-primary, #000),
        /* Legs */
        3px 18px var(--color-primary, #000), 12px 18px var(--color-primary, #000),
        /* Feet */
        0 21px var(--color-primary, #000), 15px 21px var(--color-primary, #000),
        /* Board */
        0 24px var(--color-gray-600, #4a4a4a), 3px 24px var(--color-gray-600, #4a4a4a),
        6px 24px var(--color-gray-600, #4a4a4a), 9px 24px var(--color-gray-600, #4a4a4a),
        12px 24px var(--color-gray-600, #4a4a4a), 15px 24px var(--color-gray-600, #4a4a4a),
        18px 24px var(--color-gray-600, #4a4a4a),
        /* Wheels */
        3px 27px var(--color-gray-400, #8b8b8b), 15px 27px var(--color-gray-400, #8b8b8b);
    animation: skaterBounce 1.2s ease-in-out infinite;
}

@keyframes skaterBounce {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-3px); }
}