/* Main CSS - Base Styles and Variables */
/* Premium Dark Theme with Gold Accents */

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

:root {
    /* Premium Dark Theme with Tech Blue Accent */
    --bg-primary: #0a0a0f;
    --bg-secondary: #0f0f14;
    --bg-tertiary: #16161d;
    --bg-card: #12121a;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-tertiary: #64748b;
    /* Tech Blue Accent */
    --accent-primary: #0ea5e9;
    --accent-light: #38bdf8;
    --accent-dark: #0284c7;
    --accent-glow: rgba(14, 165, 233, 0.4);
    --accent-secondary: #38bdf8;
    --accent-hover: #7dd3fc;
    --border-color: #1e293b;
    --border-light: #334155;
    --card-border: rgba(255, 255, 255, 0.08);

    /* Gradients */
    --accent-gradient: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-light) 50%, var(--accent-hover) 100%);
    --dark-gradient: linear-gradient(180deg, #0a0a0f 0%, #0f0f14 100%);

    /* Transitions - refined easing */
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    /* Light theme alternative */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --bg-card: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --accent-primary: #0284c7;
    --accent-light: #0ea5e9;
    --accent-dark: #0369a1;
    --accent-glow: rgba(2, 132, 199, 0.3);
    --accent-secondary: #0ea5e9;
    --accent-hover: #38bdf8;
    --border-color: #e2e8f0;
    --border-light: #cbd5e1;

    /* Glass variables for light mode - Liquid Glass */
    /* Ultra-transparent to match dark mode, relying on borders for structure */
    --glass-1: rgba(255, 255, 255, 0.3);
    --glass-2: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(0, 0, 0, 0.12);
    --glass-shadow: 0 20px 40px -20px rgba(0, 0, 0, 0.1);
    --glass-blur: blur(20px);
    --card-border: rgba(0, 0, 0, 0.1);
}

/* Global Ambient Background */
.global-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    background-color: #05050a;
    /* Cyber Grid Pattern */
    background-image:
        linear-gradient(rgba(14, 165, 233, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(14, 165, 233, 0.03) 1px, transparent 1px),
        radial-gradient(circle at 50% 50%, rgba(14, 165, 233, 0.05) 0%, transparent 60%);
    background-size: 50px 50px, 50px 50px, 100% 100%;
    pointer-events: none;
}

/* Floating Orbs */
.global-background::before,
.global-background::after {
    content: '';
    position: absolute;
    width: 800px;
    height: 800px;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
    animation: orbFloat 20s infinite alternate ease-in-out;
}

.global-background::before {
    background: var(--accent-primary);
    top: -20%;
    left: -10%;
    animation-delay: -5s;
}

.global-background::after {
    background: var(--accent-dark);
    bottom: -20%;
    right: -10%;
    animation-delay: -10s;
}

@keyframes orbFloat {
    0% {
        transform: translate(0, 0) scale(1);
    }

    100% {
        transform: translate(50px, 50px) scale(1.1);
    }
}

/* Light Mode Global Background */
[data-theme="light"] .global-background {
    background-color: #f8fafc;
    background-image:
        linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        radial-gradient(circle at 50% 50%, rgba(14, 165, 233, 0.03) 0%, transparent 60%);
}

[data-theme="light"] .global-background::before {
    background: var(--accent-secondary);
    opacity: 0.1;
}

[data-theme="light"] .global-background::after {
    background: var(--accent-light);
    opacity: 0.1;
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {

    .global-background::before,
    .global-background::after {
        animation: none;
    }
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    /* Make body transparent to show global background */
    background: transparent;
    color: var(--text-primary);
    line-height: 1.8;
    min-height: 100vh;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
    transition: var(--transition-slow);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 6%;
}

/* Full Screen Sections - Generous spacing */
.full-screen-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 6%;
    position: relative;
    width: 100%;
    box-sizing: border-box;
    perspective: 1000px;
    transform-style: preserve-3d;
}

/* Depth Layer System */
.depth-layer {
    transform-style: preserve-3d;
    will-change: transform;
}

.depth-layer-1 {
    --layer-depth: 0.1;
}

.depth-layer-2 {
    --layer-depth: 0.2;
}

.depth-layer-3 {
    --layer-depth: 0.3;
}

/* Section Headers - Clean hierarchy with depth */
.section-header {
    text-align: center;
    margin-bottom: 80px;
    width: 100%;
    transform-style: preserve-3d;
}

.section-title {
    font-size: 2.8rem;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.section-subtitle {
    font-size: 0.875rem;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 500;
}

/* Buttons - Premium Gold Style */
.btn {
    padding: 16px 40px;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
    text-align: center;
    font-family: 'Inter', sans-serif;
    letter-spacing: 0.05em;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #0a0a0f;
    box-shadow: 0 4px 20px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--accent-gold);
    border: 2px solid var(--accent-gold);
    border-radius: 8px;
}

.btn-outline:hover {
    background: var(--accent-gold);
    color: #0a0a0a;
    transform: translateY(-3px);
}

/* Main Content */
.main-content {
    width: 100%;
    padding: 0;
    margin: 0;
    overflow-x: hidden;
}

/* Footer - Clean, minimal */
.footer {
    background: var(--bg-secondary);
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    transition: var(--transition-slow);
}

.footer p {
    color: var(--text-tertiary);
    font-size: 0.8125rem;
    letter-spacing: 0.02em;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection Color - B&W */
::selection {
    background: var(--text-primary);
    color: var(--bg-primary);
}

/* Scrollbar - Minimal */
::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--text-tertiary);
    border-radius: 0;
}

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

/* Responsive Design */
@media (max-width: 1200px) {
    .container {
        padding: 0 5%;
    }

    .full-screen-section {
        padding: 100px 5%;
    }

    .section-title {
        font-size: 2.4rem;
    }
}

@media (max-width: 968px) {
    .container {
        padding: 0 4%;
    }

    .full-screen-section {
        padding: 80px 4%;
    }

    .section-title {
        font-size: 2rem;
    }

    .section-subtitle {
        font-size: 0.75rem;
        letter-spacing: 0.12em;
    }

    .section-header {
        margin-bottom: 60px;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 0 5%;
    }

    .full-screen-section {
        padding: 70px 5%;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .section-subtitle {
        font-size: 0.7rem;
        letter-spacing: 0.1em;
    }

    .section-header {
        margin-bottom: 50px;
    }

    .btn {
        padding: 14px 32px;
        font-size: 0.8125rem;
    }
}