/**
 * Orzatty Labs - Styles
 * División de Innovación y R&D de Orzatty Holdings
 * Material Design 3 + Cupertino + Liquid Glass Design System
 */

/* ============================================
   CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ============================================ */

:root {
    /* COLOR PALETTE - Material Design 3 */
    --md-sys-color-primary: #7C4DFF;
    --md-sys-color-on-primary: #FFFFFF;
    --md-sys-color-primary-container: #EADDFF;
    --md-sys-color-on-primary-container: #21005D;
    --md-sys-color-secondary: #625B71;
    --md-sys-color-on-secondary: #FFFFFF;
    --md-sys-color-secondary-container: #E8DEF8;
    --md-sys-color-on-secondary-container: #1D192B;
    --md-sys-color-tertiary: #7D5260;
    --md-sys-color-on-tertiary: #FFFFFF;
    --md-sys-color-tertiary-container: #FFD8E4;
    --md-sys-color-on-tertiary-container: #31111D;
    --md-sys-color-error: #B3261E;
    --md-sys-color-on-error: #FFFFFF;
    --md-sys-color-error-container: #F9DEDC;
    --md-sys-color-on-error-container: #410E0B;
    --md-sys-color-background: #0A0A0A;
    --md-sys-color-on-background: #E6E1E5;
    --md-sys-color-surface: #0A0A0A;
    --md-sys-color-on-surface: #E6E1E5;
    --md-sys-color-surface-variant: #1C1B1F;
    --md-sys-color-on-surface-variant: #CAC4D0;
    --md-sys-color-outline: #938F99;
    --md-sys-color-outline-variant: #49454F;

    /* DARK THEME COLORS */
    --md-sys-color-primary-dark: #B388FF;
    --md-sys-color-on-primary-dark: #381E72;
    --md-sys-color-primary-container-dark: #4F378B;
    --md-sys-color-on-primary-container-dark: #EADDFF;
    --md-sys-color-surface-dark: #0A0A0A;
    --md-sys-color-on-surface-dark: #E6E1E5;
    --md-sys-color-surface-variant-dark: #1C1B1F;
    --md-sys-color-on-surface-variant-dark: #CAC4D0;

    /* TYPOGRAPHY - Cupertino Scale */
    --font-family-primary: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-family-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;

    --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: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    --font-size-6xl: 4.5rem;

    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.1;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;

    /* SPACING - 8px Grid */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;

    /* BORDER RADIUS - Cupertino */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;
    --radius-squircle: 1.25rem;

    /* SHADOWS - Material Design 3 */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.2);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.5);

    /* LIQUID GLASS EFFECT */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-blur: 20px;
    --glass-highlight: rgba(255, 255, 255, 0.1);

    /* TRANSITIONS */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Z-INDEX SCALE */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
}

/* ============================================
   BASE STYLES
   ============================================ */

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--md-sys-color-on-surface);
    background-color: var(--md-sys-color-background);
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-snug);
}

/* SKIP LINK FOR ACCESSIBILITY */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-md);
    z-index: var(--z-tooltip);
    transition: top var(--transition-base);
}

.skip-link:focus {
    top: var(--space-4);
}

/* ============================================
   HEADER - FIXED WITH LIQUID GLASS
   ============================================ */

.header-fixed {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--glass-border);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    transition: transform var(--transition-bounce);
}

.logo-link:hover {
    transform: scale(1.02);
}

.logo-image {
    height: 36px;
    width: auto;
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    background: linear-gradient(135deg, var(--md-sys-color-primary) 0%, #B388FF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.main-nav {
    display: none;
}

@media (min-width: 768px) {
    .main-nav {
        display: block;
    }
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.nav-link {
    display: block;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--md-sys-color-on-surface-variant);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--md-sys-color-on-surface);
    background: var(--glass-highlight);
}

.mobile-menu-btn:hover {
    background: var(--glass-highlight);
}

@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }
}

.hamburger-line {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--md-sys-color-on-surface);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(64px + var(--space-16)) var(--space-6) var(--space-16);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(124, 77, 255, 0.15) 0%, transparent 60%);
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 20%, black 40%, transparent 70%);
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    gap: var(--space-12);
    grid-template-columns: 1fr;
}

@media (min-width: 1024px) {
    .hero-container {
        grid-template-columns: 1.2fr 0.8fr;
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-6);
}

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

.badge-text {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--md-sys-color-primary);
}

.hero-title {
    font-size: var(--font-size-4xl);
    line-height: var(--line-height-tight);
    margin-bottom: var(--space-6);
}

@media (min-width: 768px) {
    .hero-title {
        font-size: var(--font-size-6xl);
    }
}

.title-line {
    display: block;
}

.title-accent {
    background: linear-gradient(135deg, var(--md-sys-color-primary) 0%, #B388FF 50%, #FF79C6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--md-sys-color-on-surface-variant);
    max-width: 600px;
    margin-bottom: var(--space-8);
    line-height: var(--line-height-relaxed);
}

.hero-stats {
    display: flex;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--md-sys-color-primary);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--md-sys-color-on-surface-variant);
}

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

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--md-sys-color-primary) 0%, #651FFF 100%);
    color: var(--md-sys-color-on-primary);
    box-shadow: var(--shadow-md), 0 0 40px rgba(124, 77, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 60px rgba(124, 77, 255, 0.4);
}

.btn-secondary {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--md-sys-color-on-surface);
}

.btn-secondary:hover {
    background: var(--glass-highlight);
    border-color: var(--md-sys-color-primary);
}

/* HERO VISUAL */
.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-showcase {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

@media (min-width: 768px) {
    .product-showcase {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-6);
    }
}

.product-preview {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-6);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(var(--glass-blur));
    transition: all var(--transition-bounce);
    animation: float 6s ease-in-out infinite;
}

.product-preview:nth-child(2) { animation-delay: -2s; }
.product-preview:nth-child(3) { animation-delay: -4s; }
.product-preview:nth-child(4) { animation-delay: -6s; }

.product-preview:hover {
    transform: translateY(-8px);
    border-color: var(--md-sys-color-primary);
    box-shadow: var(--shadow-xl), 0 0 40px rgba(124, 77, 255, 0.2);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.preview-icon {
    font-size: 2.5rem;
}

.preview-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--md-sys-color-on-surface-variant);
}

/* ============================================
   SECTION STYLES
   ============================================ */

.section {
    padding: var(--space-20) var(--space-6);
}

.section-container {
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--space-16);
}

.section-badge {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--md-sys-color-primary);
    background: rgba(124, 77, 255, 0.1);
    border: 1px solid rgba(124, 77, 255, 0.2);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-4);
}

.section-title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-4);
}

@media (min-width: 768px) {
    .section-title {
        font-size: var(--font-size-4xl);
    }
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--md-sys-color-on-surface-variant);
    line-height: var(--line-height-relaxed);
}

/* ============================================
   CARDS
   ============================================ */

.card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    backdrop-filter: blur(var(--glass-blur));
    transition: all var(--transition-base);
}

.card:hover {
    border-color: rgba(124, 77, 255, 0.3);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(124, 77, 255, 0.1);
}

.card-icon {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-4);
}

.card-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-3);
}

.card-description {
    font-size: var(--font-size-base);
    color: var(--md-sys-color-on-surface-variant);
    line-height: var(--line-height-relaxed);
}

/* ============================================
   PHILOSOPHY SECTION
   ============================================ */

.philosophy-section {
    background: linear-gradient(180deg, transparent 0%, rgba(124, 77, 255, 0.03) 50%, transparent 100%);
}

.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--space-6);
}

@media (min-width: 640px) {
    .philosophy-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .philosophy-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.philosophy-card {
    text-align: center;
}

/* ============================================
   PRODUCTS SECTION
   ============================================ */

.products-section {
    background: var(--md-sys-color-surface);
}

.product-filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-10);
}

.filter-btn {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--md-sys-color-on-surface-variant);
    background: transparent;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    color: var(--md-sys-color-on-surface);
    border-color: var(--md-sys-color-primary);
}

.filter-btn.active {
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    border-color: var(--md-sys-color-primary);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--space-6);
}

@media (min-width: 640px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.product-card {
    display: flex;
    flex-direction: column;
}

.product-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.product-icon {
    font-size: 2rem;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(124, 77, 255, 0.1);
    border-radius: var(--radius-lg);
}

.product-info {
    flex: 1;
}

.product-name {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-1);
}

/* BADGES */
.badge {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
}

.badge-ready {
    background: rgba(76, 175, 80, 0.2);
    color: #81C784;
}

.badge-testing {
    background: rgba(255, 193, 7, 0.2);
    color: #FFD54F;
}

.badge-development {
    background: rgba(33, 150, 243, 0.2);
    color: #64B5F6;
}

.product-description {
    font-size: var(--font-size-sm);
    color: var(--md-sys-color-on-surface-variant);
    margin-bottom: var(--space-4);
    line-height: var(--line-height-relaxed);
}

.product-highlight {
    padding: var(--space-3);
    background: rgba(124, 77, 255, 0.1);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--md-sys-color-primary);
}

.product-features {
    margin-bottom: var(--space-4);
}

.product-features li {
    position: relative;
    padding-left: var(--space-5);
    font-size: var(--font-size-sm);
    color: var(--md-sys-color-on-surface-variant);
    margin-bottom: var(--space-2);
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--md-sys-color-primary);
    font-size: var(--font-size-xs);
}

.product-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: auto;
}

.tech-tag {
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
    font-family: var(--font-family-mono);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--md-sys-color-on-surface-variant);
}

/* ============================================
   TEAM SECTION
   ============================================ */

.team-section {
    background: linear-gradient(180deg, transparent 0%, rgba(124, 77, 255, 0.03) 50%, transparent 100%);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--space-6);
    max-width: 600px;
    margin: 0 auto;
}

.team-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

@media (min-width: 640px) {
    .team-card {
        flex-direction: row;
        text-align: left;
        align-items: flex-start;
    }
}

.team-avatar {
    width: 100px;
    height: 100px;
    margin-bottom: var(--space-4);
    flex-shrink: 0;
}

@media (min-width: 640px) {
    .team-avatar {
        margin-bottom: 0;
        margin-right: var(--space-6);
    }
}

.avatar-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-full);
    border: 3px solid var(--md-sys-color-primary);
}

.team-name {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-1);
}

.team-role {
    font-size: var(--font-size-sm);
    color: var(--md-sys-color-primary);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--space-3);
}

.team-bio {
    font-size: var(--font-size-base);
    color: var(--md-sys-color-on-surface-variant);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-4);
}

.team-specialties {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-2);
}

@media (min-width: 640px) {
    .team-specialties {
        justify-content: flex-start;
    }
}

.specialty {
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
    background: rgba(124, 77, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--md-sys-color-primary);
}

/* ============================================
   METHODOLOGY SECTION
   ============================================ */

.methodology-section {
    background: var(--md-sys-color-surface);
}

.methodology-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 64px;
}

.methodology-timeline::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--md-sys-color-primary) 0%, transparent 100%);
}

@media (min-width: 768px) {
    .methodology-timeline {
        padding-left: 0;
    }

    .methodology-timeline::before {
        left: 50%;
        transform: translateX(-50%);
    }
}

.timeline-item {
    position: relative;
    padding-left: 64px;
    margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
    .timeline-item {
        padding-left: 0;
        padding: var(--space-6) var(--space-8);
        width: 50%;
    }

    .timeline-item:nth-child(odd) {
        margin-left: auto;
        padding-right: var(--space-12);
        padding-left: var(--space-8);
    }

    .timeline-item:nth-child(even) {
        padding-left: var(--space-12);
        padding-right: var(--space-8);
    }
}

.timeline-marker {
    position: absolute;
    left: -64px;
    top: 24px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--md-sys-color-on-primary);
    background: linear-gradient(135deg, var(--md-sys-color-primary) 0%, #651FFF 100%);
    border-radius: var(--radius-full);
    z-index: 1;
    flex-shrink: 0;
}

@media (min-width: 768px) {
    .timeline-marker {
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
    }

    .timeline-item:nth-child(odd) .timeline-marker {
        left: calc(100% - 24px);
    }

    .timeline-item:nth-child(even) .timeline-marker {
        left: 24px;
    }
}

.timeline-content {
    padding: var(--space-6);
}

.timeline-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-2);
}

.timeline-description {
    font-size: var(--font-size-sm);
    color: var(--md-sys-color-on-surface-variant);
    line-height: var(--line-height-relaxed);
}

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact-section {
    padding: var(--space-20) var(--space-6);
    background: linear-gradient(135deg, rgba(124, 77, 255, 0.1) 0%, transparent 50%);
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-details {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
    margin: var(--space-8) 0;
}

@media (min-width: 640px) {
    .contact-details {
        flex-direction: row;
        justify-content: center;
    }
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-base);
    color: var(--md-sys-color-on-surface-variant);
}

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

.contact-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-4);
}

/* ============================================
   FOOTER
   ============================================ */

.main-footer {
    background: var(--md-sys-color-surface);
    border-top: 1px solid var(--glass-border);
    padding: var(--space-16) var(--space-6) var(--space-8);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-content {
    display: grid;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr 2fr;
    }
}

.footer-brand {
    text-align: center;
}

@media (min-width: 768px) {
    .footer-brand {
        text-align: left;
    }
}

.footer-logo {
    height: 40px;
    width: auto;
    margin-bottom: var(--space-2);
}

.footer-tagline {
    font-size: var(--font-size-sm);
    color: var(--md-sys-color-on-surface-variant);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.footer-column {
    text-align: center;
}

@media (min-width: 640px) {
    .footer-column {
        text-align: left;
    }
}

.footer-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-3);
    color: var(--md-sys-color-on-surface);
}

.footer-list li {
    margin-bottom: var(--space-2);
}

.footer-list a {
    font-size: var(--font-size-sm);
    color: var(--md-sys-color-on-surface-variant);
    transition: color var(--transition-fast);
}

.footer-list a:hover {
    color: var(--md-sys-color-primary);
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
    padding-top: var(--space-8);
    border-top: 1px solid var(--glass-border);
}

@media (min-width: 640px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}

.copyright {
    font-size: var(--font-size-sm);
    color: var(--md-sys-color-on-surface-variant);
}

.social-links {
    display: flex;
    gap: var(--space-4);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--md-sys-color-primary);
    border-color: var(--md-sys-color-primary);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

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

.hidden {
    display: none !important;
}

.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;
}

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */

@media (max-width: 639px) {
    .hide-mobile {
        display: none !important;
    }
}

@media (min-width: 640px) and (max-width: 767px) {
    .hide-tablet {
        display: none !important;
    }
}

@media (min-width: 768px) {
    .hide-desktop {
        display: none !important;
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

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

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .header-fixed,
    .hero-actions,
    .btn,
    .mobile-menu-btn {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .card {
        border: 1px solid #ddd;
        box-shadow: none;
    }
}