/* ===== CSS Variables ===== */
:root {
    /* Light Mode Colors */
    --color-primary: #0f172a;
    --color-secondary: #3b82f6;
    --color-bg: #f8fafc;
    --color-bg-alt: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-border: rgba(255, 255, 255, 0.8);
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --dot-color: #e2e8f0;

    /* Brand Colors */
    --color-sfe: #10b981;
    --color-sgi: #6366f1;
    --color-claw: #f59e0b;
    --color-seevo: #06b6d4;
    --color-mark: #ec4899;
}

/* Dark Mode Colors */
[data-theme="dark"] {
    --color-primary: #f8fafc;
    --color-secondary: #60a5fa;
    --color-bg: #0B0F19;
    --color-bg-alt: #111827;
    --glass-bg: rgba(17, 24, 39, 0.75);
    --glass-border: rgba(55, 65, 81, 0.5);
    --color-text: #f1f5f9;
    --color-text-muted: #94a3b8;
    --dot-color: #1e293b;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ===== Utility Classes ===== */
.text-primary {
    color: var(--color-primary);
}

.text-muted {
    color: var(--color-text-muted);
}

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

.gradient-text {
    background: linear-gradient(135deg, var(--color-secondary) 0%, #8b5cf6 50%, #ec4899 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== Navigation ===== */
#navbar {
    background: transparent;
}

#navbar.scrolled {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.nav-link {
    color: var(--color-text-muted);
    font-weight: 500;
    transition: color 0.2s ease;
}

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

/* ===== Theme Toggle Icons ===== */
[data-theme="dark"] .theme-icon-dark {
    display: none;
}

[data-theme="dark"] .theme-icon-light {
    display: block;
}

:root .theme-icon-dark {
    display: block;
}

:root .theme-icon-light {
    display: none;
}

/* ===== Glass Effects ===== */
.glass-bg {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

/* ===== Dot Grid Background ===== */
.dot-grid {
    background-image: radial-gradient(var(--dot-color) 1px, transparent 1px);
    background-size: 24px 24px;
    opacity: 0.8;
}

/* ===== Buttons ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--color-secondary) 0%, #8b5cf6 100%);
    color: white;
    font-weight: 600;
    border-radius: 0.75rem;
    transition: all 0.3s ease;
    text-decoration: none;
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    background: var(--glass-bg);
    color: var(--color-text);
    font-weight: 600;
    border-radius: 0.75rem;
    border: 1px solid var(--glass-border);
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-secondary:hover {
    background: var(--color-bg-alt);
    transform: translateY(-2px);
}

/* ===== Dimension Cards ===== */
.dimension-card {
    padding: 1.5rem;
    background: var(--glass-bg);
    border-radius: 1rem;
    border: 1px solid var(--glass-border);
    text-align: center;
    transition: all 0.3s ease;
}

.dimension-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.dimension-icon {
    width: 4rem;
    height: 4rem;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

/* ===== Benchmark Cards ===== */
.benchmark-card {
    background: var(--color-bg-alt);
    border-radius: 1rem;
    overflow: hidden;
    border: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

.benchmark-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    border-color: var(--accent-color, var(--color-secondary));
}

.card-image {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.card-image img {
    transition: transform 0.3s ease;
}

.benchmark-card:hover .card-image img {
    transform: scale(1.05);
}

.status-badge {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-active {
    background: rgba(16, 185, 129, 0.2);
    color: #10b981;
}

.status-soon {
    background: rgba(245, 158, 11, 0.2);
    color: #f59e0b;
}

.card-content {
    padding: 1.5rem;
}

.card-link {
    display: inline-flex;
    align-items: center;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
}

.card-link:hover {
    transform: translateX(4px);
}

/* ===== Seevomap Preview ===== */
.seevomap-preview {
    position: relative;
}

.seevomap-preview::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, var(--color-seevo) 0%, #3b82f6 100%);
    border-radius: 1.25rem;
    z-index: -1;
    opacity: 0.5;
}

/* ===== Coming Soon Card ===== */
.coming-soon-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.coming-soon-card:hover {
    border-color: var(--color-mark);
    box-shadow: 0 0 20px rgba(236, 72, 153, 0.2);
}

/* ===== Statistics ===== */
.stat-card {
    text-align: center;
    padding: 1.5rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-secondary) 0%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--color-text-muted);
    font-weight: 500;
}

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

.animate-fade-in-up {
    animation: fade-in-up 0.8s ease-out forwards;
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    transition-delay: var(--delay, 0s);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Mobile Menu ===== */
#mobile-menu {
    border-top: 1px solid var(--glass-border);
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
    .stat-number {
        font-size: 2rem;
    }

    h1 {
        font-size: 2.5rem !important;
    }
}

@media (max-width: 1024px) {
    .seevomap-preview {
        margin-top: 2rem;
    }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-text-muted);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-secondary);
}

/* ===== Selection ===== */
::selection {
    background: var(--color-secondary);
    color: white;
}

/* ===== Focus States ===== */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}

/* ===== Vision Pillar Cards ===== */
.vision-pillar-card {
    padding: 2rem;
    background: var(--color-bg-alt);
    border-radius: 1.25rem;
    border: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

.vision-pillar-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.12);
}

.pillar-icon {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
}

/* ===== Research Cards ===== */
.research-card {
    background: var(--color-bg-alt);
    border-radius: 1rem;
    border: 1px solid var(--glass-border);
    padding: 1.5rem;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.research-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.research-card-header {
    flex: 1;
}

.research-card-footer {
    margin-top: auto;
}

.research-tag {
    display: inline-block;
    padding: 0.25rem 0.625rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 9999px;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.research-link {
    display: inline-flex;
    align-items: center;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.research-link:hover {
    opacity: 0.8;
}

/* ===== Contact Cards ===== */
.contact-card {
    padding: 2rem;
    background: var(--glass-bg);
    border-radius: 1rem;
    border: 1px solid var(--glass-border);
    text-align: center;
    transition: all 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.contact-icon {
    width: 4rem;
    height: 4rem;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    color: var(--color-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    transition: opacity 0.2s ease;
}

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

/* ===== Benchmark Overview (Home Page) ===== */
.benchmark-overview-card {
    background: var(--color-bg-alt);
    border-radius: 1rem;
    border: 1px solid var(--glass-border);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
}

.benchmark-overview-card:hover {
    transform: translateX(8px);
    border-color: var(--accent-color, var(--color-secondary));
}

/* ===== Benchmark Comparison Table ===== */
.benchmark-table {
    background: var(--color-bg-alt);
    border-radius: 1rem;
    overflow: hidden;
    border-collapse: separate;
    border-spacing: 0;
    border: 1px solid var(--glass-border);
}

.benchmark-table th,
.benchmark-table td {
    padding: 1rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--glass-border);
}

.benchmark-table th {
    background: var(--glass-bg);
    font-weight: 600;
    font-size: 0.875rem;
}

.benchmark-table td {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.benchmark-table td:first-child {
    font-weight: 500;
    color: var(--color-text);
}

.benchmark-table tr:last-child td {
    border-bottom: none;
}

.benchmark-table tr:hover td {
    background: var(--glass-bg);
}

/* ===== Active Navigation Link ===== */
.nav-link.active {
    color: var(--color-secondary);
    font-weight: 600;
}

/* ===== Hero Title World Styling ===== */
.hero-world {
    background: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
    display: block;
    margin-top: 0.5rem;
}

/* ===== Feature Cards ===== */
.feature-card {
    padding: 1.5rem;
    background: var(--color-bg-alt);
    border-radius: 1rem;
    border: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

/* ===== Component Cards (Architecture) ===== */
.component-card {
    padding: 1.5rem;
    background: var(--color-bg-alt);
    border-radius: 1rem;
    border: 1px solid var(--glass-border);
    border-top: 3px solid var(--accent-color, var(--color-secondary));
    transition: all 0.3s ease;
    position: relative;
}

.component-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.component-number {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    font-weight: 700;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.75rem;
}

/* ===== Dropdown Navigation ===== */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-trigger {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    cursor: pointer;
}

.nav-dropdown-trigger i {
    font-size: 0.625rem;
    transition: transform 0.2s ease;
}

.nav-dropdown:hover .nav-dropdown-trigger i {
    transform: rotate(180deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    min-width: 220px;
    padding: 0.5rem;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 0.75rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    z-index: 100;
    margin-top: 0.5rem;
}

.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
}

.nav-dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.875rem;
    border-radius: 0.5rem;
    text-decoration: none;
    color: var(--color-text);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.15s ease;
}

.nav-dropdown-item:hover {
    background: var(--color-bg-alt);
}

.nav-dropdown-item .icon {
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 0.375rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: white;
    flex-shrink: 0;
}

.nav-dropdown-item .icon.sgi { background: #6366f1; }
.nav-dropdown-item .icon.claw { background: #f59e0b; }

.nav-dropdown-item span {
    flex: 1;
}

.nav-dropdown-item .arrow {
    color: var(--color-text-muted);
    font-size: 0.75rem;
}

/* ===== Architecture Diagram Theme Switching ===== */
.architecture-light {
    display: block;
}

.architecture-dark {
    display: none;
}

[data-theme="dark"] .architecture-light {
    display: none;
}

[data-theme="dark"] .architecture-dark {
    display: block;
}