/* ============================================
   Astranex Design System
   ============================================ */

/* --- Design Tokens (Light — default) --- */
:root {
    --color-bg: #fafafa;
    --color-surface: #ffffff;
    --color-surface-raised: #f4f4f5;
    --color-primary: #09090b;
    --color-secondary: #52525b;
    --color-accent: #4f46e5;
    --color-accent-hover: #6366f1;
    --color-accent-subtle: rgba(79, 70, 229, 0.08);
    --color-accent-glow: rgba(79, 70, 229, 0.1);
    --color-border: rgba(0, 0, 0, 0.08);
    --color-border-light: rgba(0, 0, 0, 0.12);
    --color-border-accent: rgba(79, 70, 229, 0.25);
    --color-text: #09090b;
    --color-text-secondary: #52525b;
    --color-text-muted: #a1a1aa;
    --color-error: #dc2626;
    --color-success: #16a34a;

    --gradient-primary: linear-gradient(135deg, #4f46e5, #7c3aed, #8b5cf6);
    --gradient-hero: linear-gradient(180deg, rgba(79, 70, 229, 0.06) 0%, transparent 60%);
    --gradient-cta: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #1e1b4b 100%);
    --gradient-text: linear-gradient(135deg, #4f46e5, #7c3aed, #6366f1);
    --gradient-glow: radial-gradient(ellipse at center, rgba(79, 70, 229, 0.08), transparent 70%);

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.1;
    --line-height-snug: 1.3;
    --line-height-normal: 1.6;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    --spacing-5xl: 8rem;

    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1), 0 4px 10px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 20px rgba(79, 70, 229, 0.1);
    --shadow-glow-lg: 0 0 40px rgba(79, 70, 229, 0.15);

    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-smooth: 500ms cubic-bezier(0.4, 0, 0.2, 1);

    --animation-duration: 600ms;
    --animation-stagger: 80ms;
    --animation-easing: cubic-bezier(0.4, 0, 0.2, 1);

    --container-max: 1200px;
    --container-narrow: 800px;
    --navbar-height: 64px;
}

/* --- Dark Theme --- */
[data-theme="dark"] {
    --color-bg: #09090b;
    --color-surface: #111113;
    --color-surface-raised: #18181b;
    --color-primary: #fafafa;
    --color-secondary: #a1a1aa;
    --color-accent: #6366f1;
    --color-accent-hover: #818cf8;
    --color-accent-subtle: rgba(99, 102, 241, 0.1);
    --color-accent-glow: rgba(99, 102, 241, 0.15);
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-light: rgba(255, 255, 255, 0.12);
    --color-border-accent: rgba(99, 102, 241, 0.3);
    --color-text: #fafafa;
    --color-text-secondary: #a1a1aa;
    --color-text-muted: #71717a;
    --color-error: #ef4444;
    --color-success: #22c55e;

    --gradient-primary: linear-gradient(135deg, #6366f1, #8b5cf6, #a78bfa);
    --gradient-hero: linear-gradient(180deg, rgba(99, 102, 241, 0.08) 0%, transparent 60%);
    --gradient-cta: linear-gradient(135deg, #18181b 0%, #1e1b4b 50%, #18181b 100%);
    --gradient-text: linear-gradient(135deg, #e0e7ff, #c7d2fe, #a5b4fc);
    --gradient-glow: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.15), transparent 70%);

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3), 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.4), 0 4px 10px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.15);
    --shadow-glow-lg: 0 0 40px rgba(99, 102, 241, 0.2);
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
    color-scheme: light;
}

[data-theme="dark"] {
    color-scheme: dark;
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-accent-hover);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-hover);
}

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

h1, h2, h3, h4, h5, h6 {
    line-height: var(--line-height-tight);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

h1:focus {
    outline: none;
}

ul, ol {
    list-style: none;
}

/* --- Utility: Container --- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--spacing-lg);
}

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

/* --- Page wrapper --- */
.page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.page-content {
    flex: 1;
}

/* ============================================
   Animation Utilities
   ============================================ */

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.96);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

@keyframes subtleFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 0.8; }
}

.animate-fade-in {
    animation: fadeIn var(--animation-duration) var(--animation-easing) both;
}

.animate-slide-up {
    animation: slideUp var(--animation-duration) var(--animation-easing) both;
}

.animate-slide-down {
    animation: slideDown var(--animation-duration) var(--animation-easing) both;
}

.animate-scale-in {
    animation: scaleIn var(--animation-duration) var(--animation-easing) both;
}

/* Stagger children: apply to parent, children get delayed */
.animate-stagger > * { animation: slideUp var(--animation-duration) var(--animation-easing) both; }
.animate-stagger > *:nth-child(1) { animation-delay: calc(var(--animation-stagger) * 1); }
.animate-stagger > *:nth-child(2) { animation-delay: calc(var(--animation-stagger) * 2); }
.animate-stagger > *:nth-child(3) { animation-delay: calc(var(--animation-stagger) * 3); }
.animate-stagger > *:nth-child(4) { animation-delay: calc(var(--animation-stagger) * 4); }
.animate-stagger > *:nth-child(5) { animation-delay: calc(var(--animation-stagger) * 5); }
.animate-stagger > *:nth-child(6) { animation-delay: calc(var(--animation-stagger) * 6); }

.hover-lift {
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.hover-lift:hover {
    transform: translateY(-4px);
}

/* Gradient text utility */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Glow line separator */
.glow-line {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    border: none;
    opacity: 0.3;
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================
   Navbar
   ============================================ */

.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--navbar-height);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-border);
    transition: background var(--transition-slow), border-color var(--transition-slow), box-shadow var(--transition-slow);
}

.navbar--scrolled {
    border-bottom-color: var(--color-border-light);
}

.navbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.navbar__brand {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
    transition: opacity var(--transition-fast);
}

.navbar__brand:hover {
    color: var(--color-primary);
    opacity: 0.8;
}

.navbar__links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.navbar__link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
    padding: var(--spacing-xs) 0;
    position: relative;
}

.navbar__link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--gradient-primary);
    transition: width var(--transition-smooth);
}

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

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

.navbar__link--active {
    color: var(--color-primary);
}

.navbar__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.navbar__mobile-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    color: var(--color-primary);
}

.navbar__mobile-toggle svg {
    width: 24px;
    height: 24px;
}

@media (max-width: 768px) {
    .navbar__links {
        display: none;
    }

    .navbar__links--open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        background: rgba(250, 250, 250, 0.97);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--color-border);
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
    }

    .navbar__mobile-toggle {
        display: flex;
    }

    .navbar__actions .contact-btn {
        display: none;
    }
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    padding: var(--spacing-5xl) 0 var(--spacing-4xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 800px;
    height: 100%;
    background: var(--gradient-glow);
    pointer-events: none;
    animation: glowPulse 6s ease-in-out infinite;
}

.hero__content {
    position: relative;
    z-index: 1;
}

.hero__title {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.03em;
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-lg);
    max-width: 800px;
    margin-inline: auto;
    animation: slideUp var(--animation-duration) var(--animation-easing) both;
}

.hero__title .text-gradient {
    background: var(--gradient-text);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShift 8s ease infinite;
}

.hero__subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    line-height: var(--line-height-normal);
    max-width: 600px;
    margin-inline: auto;
    margin-bottom: var(--spacing-2xl);
    animation: slideUp var(--animation-duration) var(--animation-easing) 100ms both;
}

.hero__actions {
    animation: slideUp var(--animation-duration) var(--animation-easing) 200ms both;
}

@media (max-width: 768px) {
    .hero {
        padding: var(--spacing-3xl) 0 var(--spacing-2xl);
    }

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

    .hero__subtitle {
        font-size: var(--font-size-lg);
    }
}

/* ============================================
   Section
   ============================================ */

.section {
    padding: var(--spacing-4xl) 0;
    position: relative;
}

.section--alt {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.section__header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section__label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--spacing-sm);
}

.section__title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
}

.section__description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin-inline: auto;
}

@media (max-width: 768px) {
    .section {
        padding: var(--spacing-2xl) 0;
    }

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

/* ============================================
   Feature Grid
   ============================================ */

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

@media (max-width: 992px) {
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .feature-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Service Card
   ============================================ */

.service-card {
    background: var(--color-surface-raised);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    opacity: 0;
    transition: opacity var(--transition-smooth);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow), var(--shadow-lg);
    border-color: var(--color-border-accent);
}

.service-card:hover::before {
    opacity: 1;
}

.service-card__icon {
    width: 44px;
    height: 44px;
    background: var(--color-accent-subtle);
    border: 1px solid var(--color-border-accent);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-accent-hover);
    font-size: var(--font-size-xl);
    transition: box-shadow var(--transition-smooth);
}

.service-card:hover .service-card__icon {
    box-shadow: var(--shadow-glow);
}

.service-card__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
}

.service-card__description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-normal);
}

/* ============================================
   Process Step
   ============================================ */

.process-steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
    max-width: var(--container-narrow);
    margin-inline: auto;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    left: 23px;
    top: 48px;
    bottom: 48px;
    width: 1px;
    background: linear-gradient(180deg, var(--color-accent), var(--color-border), var(--color-accent));
    opacity: 0.3;
}

.process-step {
    display: flex;
    gap: var(--spacing-xl);
    align-items: flex-start;
    position: relative;
}

.process-step__number {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    box-shadow: var(--shadow-glow);
    position: relative;
    z-index: 1;
}

.process-step__content {
    flex: 1;
    padding-top: var(--spacing-xs);
}

.process-step__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
}

.process-step__description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

@media (max-width: 600px) {
    .process-steps::before {
        display: none;
    }

    .process-step {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

/* ============================================
   CTA Section
   ============================================ */

.cta {
    text-align: center;
    padding: var(--spacing-5xl) 0;
    background: var(--gradient-cta);
    color: var(--color-surface);
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 400px;
    background: var(--gradient-glow);
    pointer-events: none;
    animation: glowPulse 6s ease-in-out infinite;
}

.cta__content {
    position: relative;
    z-index: 1;
}

.cta__title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.cta__description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
    max-width: 500px;
    margin-inline: auto;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-smooth);
    text-decoration: none;
    line-height: 1;
    white-space: nowrap;
    position: relative;
}

.btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

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

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

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

.btn--secondary:hover {
    background: var(--color-surface);
    border-color: var(--color-border-light);
    color: var(--color-primary);
}

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

.btn--accent:hover {
    background: var(--color-accent-hover);
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn--ghost {
    background: transparent;
    color: var(--color-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn--ghost:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--color-primary);
}

.btn--glow {
    background: var(--gradient-primary);
    color: white;
    border: none;
}

.btn--glow:hover {
    box-shadow: var(--shadow-glow-lg);
    color: white;
}

.btn--sm {
    font-size: var(--font-size-xs);
    padding: 0.375rem 0.75rem;
}

/* --- Contact Button --- */
.contact-btn {
    composes: btn btn--primary;
}

/* ============================================
   Footer
   ============================================ */

.footer {
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
    background: var(--color-bg);
}

.footer__inner {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
}

.footer__brand-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.footer__brand-tagline {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.footer__links {
    display: flex;
    gap: var(--spacing-3xl);
}

.footer__link-group h4 {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-muted);
}

.footer__link-group a {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    transition: color var(--transition-fast);
}

.footer__link-group a:hover {
    color: var(--color-primary);
}

.footer__bottom {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-xl);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-align: center;
}

@media (max-width: 768px) {
    .footer__inner {
        flex-direction: column;
    }

    .footer__links {
        flex-direction: column;
        gap: var(--spacing-xl);
    }
}

/* ============================================
   Language Selector
   ============================================ */

.lang-selector {
    position: relative;
}

.lang-selector__current {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-family: var(--font-family);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: border-color var(--transition-fast), color var(--transition-fast);
}

.lang-selector__current:hover {
    border-color: var(--color-border-light);
    color: var(--color-text-secondary);
}

.lang-selector__dropdown {
    position: absolute;
    top: calc(100% + 4px);
    right: 0;
    background: var(--color-surface-raised);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 140px;
    z-index: 200;
    overflow: hidden;
    animation: slideDown 200ms var(--animation-easing) both;
}

.lang-selector__option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.lang-selector__option:hover {
    background: rgba(0, 0, 0, 0.04);
    color: var(--color-primary);
}

.lang-selector__option--active {
    color: var(--color-accent-hover);
    font-weight: var(--font-weight-medium);
}

.lang-selector__flag {
    font-size: var(--font-size-base);
    line-height: 1;
}

/* ============================================
   About page
   ============================================ */

.about-values {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    max-width: var(--container-narrow);
    margin-inline: auto;
}

.about-value {
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: var(--color-surface-raised);
    transition: border-color var(--transition-smooth), box-shadow var(--transition-smooth);
}

.about-value:hover {
    border-color: var(--color-border-accent);
    box-shadow: var(--shadow-glow);
}

.about-value__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
}

.about-value__description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

@media (max-width: 600px) {
    .about-values {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Contact page
   ============================================ */

.contact-info {
    text-align: center;
    max-width: 500px;
    margin-inline: auto;
}

.contact-info__text {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.contact-info__email {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
    margin-bottom: var(--spacing-2xl);
    transition: opacity var(--transition-fast);
}

.contact-info__email:hover {
    opacity: 0.8;
}

/* ============================================
   Insights page
   ============================================ */

.insights-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    max-width: var(--container-narrow);
    margin-inline: auto;
}

.insight-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    background: var(--color-surface-raised);
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
}

.insight-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-border-light);
}

.insight-card__tag {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-accent-hover);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--spacing-sm);
}

.insight-card__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
}

.insight-card__summary {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ============================================
   Error UI
   ============================================ */

.error-ui {
    text-align: center;
    padding: var(--spacing-4xl) 0;
}

.error-ui__title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-error);
}

.error-ui__message {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* --- Blazor error boundary --- */
.blazor-error-boundary {
    background: var(--color-error);
    padding: var(--spacing-md) var(--spacing-lg);
    color: white;
    border-radius: var(--radius-md);
}

.blazor-error-boundary::after {
    content: "An error has occurred.";
}

#blazor-error-ui {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--color-error);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: center;
    font-size: var(--font-size-sm);
}

#blazor-error-ui .reload {
    color: white;
    text-decoration: underline;
    margin-left: var(--spacing-sm);
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    margin-left: var(--spacing-md);
}

/* ============================================
   Theme-Specific Overrides (hardcoded values)
   ============================================ */

/* Light mode (default) navbar */
.navbar {
    background: rgba(250, 250, 250, 0.7);
}

.navbar--scrolled {
    background: rgba(250, 250, 250, 0.92);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.btn--primary:hover {
    background: #27272a;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.08);
}

/* Dark mode navbar */
[data-theme="dark"] .navbar {
    background: rgba(9, 9, 11, 0.6);
}

[data-theme="dark"] .navbar--scrolled {
    background: rgba(9, 9, 11, 0.9);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .navbar__links--open {
    background: rgba(9, 9, 11, 0.95);
}

[data-theme="dark"] .btn--primary:hover {
    background: #e4e4e7;
    box-shadow: 0 0 20px rgba(250, 250, 250, 0.1);
}

[data-theme="dark"] .lang-selector__option:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* CTA always renders on dark background regardless of theme */
.cta__title {
    color: #fafafa;
}

.cta__description {
    color: #a1a1aa;
}

/* ============================================
   Theme Toggle
   ============================================ */

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--color-text-muted);
    transition: border-color var(--transition-fast), color var(--transition-fast);
    padding: 0;
    font-family: var(--font-family);
}

.theme-toggle:hover {
    border-color: var(--color-border-light);
    color: var(--color-text-secondary);
}

.theme-toggle svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-smooth);
}

.theme-toggle:hover svg {
    transform: rotate(15deg);
}