/* ===================================
   Yoo.plus - Modern Portfolio Design
   Created: October 14, 2025
   =================================== */

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

:root {
    /* Colors - Domain Palette */
    --color-climate: #01A4A6;
    --color-geospatial: #27AE60;
    --color-lifescience: #8E44AD;
    --color-medtech: #E74C3C;
    --color-startup: #E67E22;
    --color-industry: #34495E;
    
    /* Base Colors */
    --color-primary: #1A252F;
    --color-secondary: #01A4A6;
    --color-text: #2C3E50;
    --color-text-light: #6B7280;
    --color-bg: #FFFFFF;
    --color-bg-light: #F9FAFB;
    --color-bg-dark: #111827;
    --color-bg-darker: #0F172A;
    
    /* Typography */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--color-primary);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }

p {
    margin-bottom: 1rem;
    color: var(--color-text);
}

.lead {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

/* ===== Layout ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.section.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-md);
}

.section-title.centered {
    text-align: center;
}

.centered {
    text-align: center;
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.nav-logo img {
    height: 40px;
    width: auto;
    transition: var(--transition);
}

.nav-logo:hover img {
    opacity: 0.8;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-secondary);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--color-secondary);
}

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

.nav-link.active {
    color: var(--color-secondary);
}

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

/* Hamburger Menu */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.hamburger {
    display: block;
    width: 28px;
    height: 2px;
    background: var(--color-text);
    position: relative;
    transition: var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 28px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

.nav-toggle.active .hamburger {
    background: transparent;
}

.nav-toggle.active .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.nav-toggle.active .hamburger::after {
    transform: rotate(-45deg);
    bottom: 0;
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #0F172A 100%);
    position: relative;
    margin-top: 70px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(1, 164, 166, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    max-width: 800px;
    animation: fadeInUp 1s ease-out;
}

.hero-logo {
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 1s ease-out;
}

.hero-logo img {
    height: 120px;
    width: auto;
    opacity: 0.95;
}

.hero-title {
    font-size: clamp(3rem, 6vw, 5rem);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, #FFFFFF 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 60px rgba(1, 164, 166, 0.3);
}

.hero-subtitle {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-family: var(--font-heading);
    color: #E5E7EB;
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.hero-credentials {
    font-size: 1.125rem;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    letter-spacing: 0.5px;
}

.hero-tagline {
    font-size: 1.25rem;
    color: #9CA3AF;
    margin-bottom: var(--spacing-lg);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: #9CA3AF;
    font-size: 0.875rem;
    animation: bounce 2s infinite;
}

.scroll-icon {
    color: var(--color-secondary);
    animation: pulse 2s infinite;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    font-size: 1rem;
}

.btn-primary {
    background: var(--color-secondary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: #018F91;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: white;
    color: var(--color-primary);
    border: 2px solid white;
}

.btn-secondary:hover {
    background: transparent;
    color: white;
    border-color: white;
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background: var(--color-primary);
    color: white;
}

.btn-secondary-outline {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary-outline:hover {
    background: white;
    color: var(--color-secondary);
    border-color: white;
    transform: translateY(-2px);
}

/* ===== Metrics Section ===== */
.section-metrics {
    background: linear-gradient(180deg, var(--color-bg-dark) 0%, var(--color-bg-darker) 100%);
    padding: var(--spacing-lg) 0;
    opacity: 1;
    transform: none;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    text-align: center;
}

.metric {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.metric.visible {
    opacity: 1;
    transform: translateY(0);
}

.metric-number {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-secondary) 0%, #27AE60 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
    font-family: var(--font-heading);
}

.metric-label {
    color: #9CA3AF;
    font-size: 1.125rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ===== Vision Section ===== */
.section-vision {
    background: var(--color-bg);
}

.vision-content-centered {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.quote-centered {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-style: italic;
    color: var(--color-secondary);
    margin: var(--spacing-lg) auto;
    padding: var(--spacing-md);
    border-top: 4px solid var(--color-secondary);
    border-bottom: 4px solid var(--color-secondary);
    max-width: 800px;
}

.vision-text-wide {
    color: var(--color-text-light);
    line-height: 1.8;
    font-size: 1.125rem;
    margin: var(--spacing-md) auto;
    max-width: 800px;
}

/* ===== Leadership Section ===== */
.section-leadership {
    background: var(--color-bg-light);
}

.leadership-grid {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
}

.leadership-image {
    display: flex;
    justify-content: center;
}

.leadership-name {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.leadership-title {
    font-size: 1.125rem;
    color: var(--color-secondary);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.leadership-bio {
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.leadership-grid .btn-secondary {
    background: var(--color-secondary);
    color: white;
    border: 2px solid var(--color-secondary);
}

.leadership-grid .btn-secondary:hover {
    background: #018F91;
    color: white;
    border-color: #018F91;
}

/* ===== Old Vision Grid (kept for compatibility) ===== */
.vision-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.vision-image {
    display: flex;
    justify-content: center;
}

.profile-photo {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    border: 4px solid white;
}

.image-placeholder {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.quote {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-style: italic;
    color: var(--color-secondary);
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-md);
    border-left: 4px solid var(--color-secondary);
}

.vision-text {
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.vision-expertise {
    background: linear-gradient(135deg, rgba(1, 164, 166, 0.1) 0%, rgba(39, 174, 96, 0.1) 100%);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid var(--color-secondary);
}

.vision-expertise strong {
    color: var(--color-secondary);
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: 1.125rem;
}

.vision-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* ===== Philosophy Section ===== */
.section-philosophy {
    background: linear-gradient(180deg, #1E293B 0%, #0F172A 100%);
    color: white;
}

.section-philosophy .section-title,
.section-philosophy .lead {
    color: white;
}

.section-philosophy .pillar h3 {
    color: white;
}

.section-philosophy .pillar p {
    color: #D1D5DB;
}

.philosophy-content {
    max-width: 900px;
    margin: 0 auto;
}

.pillars {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.pillar {
    text-align: center;
    padding: var(--spacing-md);
}

.pillar-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.pillar h3 {
    margin-bottom: var(--spacing-sm);
}

.pillar p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* ===== Universe Section ===== */
.section-universe {
    background: var(--color-bg);
}

.domains-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.domain-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    border-left: 4px solid transparent;
    position: relative;
    border: 1px solid rgba(0, 0, 0, 0.06);
}

.domain-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.domain-card[data-domain="climate"] { border-left-color: var(--color-climate); }
.domain-card[data-domain="geospatial"] { border-left-color: var(--color-geospatial); }
.domain-card[data-domain="lifescience"] { border-left-color: var(--color-lifescience); }
.domain-card[data-domain="medtech"] { border-left-color: var(--color-medtech); }
.domain-card[data-domain="startup"] { border-left-color: var(--color-startup); }
.domain-card[data-domain="industry"] { border-left-color: var(--color-industry); }
.domain-card[data-domain="data"] { border-left-color: #3498DB; }

.domain-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.domain-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.domain-description {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.domain-project {
    color: var(--color-text);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.domain-status {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-active {
    background: #D5F4E6;
    color: #27AE60;
}

.status-development {
    background: #E3F2FD;
    color: #2196F3;
}

.status-research {
    background: #F3E5F5;
    color: #9C27B0;
}

.status-consulting {
    background: #FFF3E0;
    color: #FF9800;
}

.status-stealth {
    background: #ECEFF1;
    color: #607D8B;
}

/* ===== Featured Section (YooDrop) ===== */
.section-featured {
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
    color: white;
    position: relative;
}

.section-featured::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(1, 164, 166, 0.1) 0%, transparent 60%);
    pointer-events: none;
}

.section-featured .section-title,
.section-featured .lead {
    color: white;
}

.section-featured .featured-description {
    color: white;
}

.section-featured p {
    color: white !important;
}

.featured-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--color-secondary);
    color: white;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.yoodrop-logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: var(--spacing-md) 0 var(--spacing-lg) 0;
}

.yoodrop-logo {
    height: 80px;
    width: auto;
    max-width: 400px;
}

.featured-content {
    max-width: 900px;
    margin: 0 auto;
}

.featured-description {
    font-size: 1.125rem;
    color: white;
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.featured-description p {
    color: white !important;
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.featured-item {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.featured-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(1, 164, 166, 0.3);
}

.featured-item h4 {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

.featured-item p {
    color: #D1D5DB;
}

.featured-tech {
    margin-bottom: var(--spacing-lg);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.tech-tag {
    padding: 0.5rem 1rem;
    background: rgba(1, 164, 166, 0.1);
    border: 1px solid rgba(1, 164, 166, 0.3);
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--color-secondary);
    transition: var(--transition);
}

.tech-tag:hover {
    background: rgba(1, 164, 166, 0.15);
    border-color: var(--color-secondary);
}

.featured-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.featured-tech {
    background: rgba(255, 255, 255, 0.05);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.featured-tech h4 {
    color: white;
}

.featured-status {
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: white;
}

.status-badge {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.875rem;
}

.status-production {
    background: #D5F4E6;
    color: #27AE60;
}

/* ===== Approach Section ===== */
.section-approach {
    background: var(--color-bg-light);
}

.approach-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.approach-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.06);
    transition: var(--transition);
}

.approach-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
    border-color: var(--color-secondary);
}

.approach-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-secondary);
    opacity: 0.2;
    margin-bottom: var(--spacing-sm);
}

.approach-card h3 {
    margin-bottom: var(--spacing-sm);
}

.approach-card p {
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ===== Advisory Section ===== */
.section-advisory {
    background: linear-gradient(180deg, var(--color-bg-light) 0%, white 100%);
}

.advisory-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.advisory-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transition: var(--transition);
}

.advisory-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
    border-color: var(--color-secondary);
}

.advisory-card h3 {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

.collaboration-domains {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-bg-light);
    border-radius: var(--radius-md);
}

.collaboration-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    justify-content: center;
    margin-top: var(--spacing-sm);
}

.collaboration-tags span {
    padding: 0.5rem 1rem;
    background: white;
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--color-text);
}

/* ===== Connect Section ===== */
.section-connect {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: white;
}

.section-connect .section-title,
.section-connect .lead {
    color: white;
}

.connect-content {
    max-width: 700px;
    margin: 0 auto;
}

.connect-options {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin: var(--spacing-lg) 0;
    flex-wrap: wrap;
}

.connect-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 1rem 2rem;
    background: white;
    color: var(--color-primary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: var(--transition);
}

.connect-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-md);
}

.social-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
    text-decoration: none;
    transition: var(--transition);
    opacity: 0.8;
    font-weight: 500;
}

.social-links a i {
    font-size: 1.25rem;
}

.social-links a:hover {
    opacity: 1;
    transform: translateY(-2px);
}

/* ===== Footer ===== */
.footer {
    background: linear-gradient(180deg, #0F172A 0%, #020617 100%);
    color: white;
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    align-items: start;
}

.footer-brand h3 {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.1);
    }
}

/* ===== Responsive Design ===== */

/* Tablet: 2x2 grid for 4-item sections */
@media (min-width: 769px) and (max-width: 1024px) {
    .approach-grid,
    .advisory-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile: Single column */
@media (max-width: 768px) {
    :root {
        --spacing-xl: 4rem;
        --spacing-lg: 3rem;
    }
    
    /* Mobile Navigation */
    .nav-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 300px;
        height: 100vh;
        background: white;
        flex-direction: column;
        padding: 5rem 2rem 2rem;
        gap: 1.5rem;
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        z-index: 1000;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-link {
        font-size: 1.125rem;
        padding: 0.5rem 0;
    }
    
    .nav-link::after {
        display: none;
    }
    
    .hero {
        min-height: 80vh;
    }
    
    .hero-logo {
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-logo img {
        height: 80px;
        display: block;
        margin: 0 auto;
    }
    
    .vision-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .leadership-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .quote-centered {
        font-size: 1.5rem;
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .hero-cta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .vision-cta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .vision-cta .btn {
        width: 100%;
        text-align: center;
    }
    
    .quote {
        border-left: none;
        border-top: 4px solid var(--color-secondary);
        padding-left: 0;
        padding-top: var(--spacing-sm);
    }
    
    .domains-grid,
    .approach-grid,
    .advisory-grid {
        grid-template-columns: 1fr;
    }
    
    .yoodrop-logo {
        height: 60px;
        max-width: 280px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links {
        align-items: center;
    }
}

@media (max-width: 480px) {
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .featured-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
}