/**
 * ═══════════════════════════════════════════════════════
 * BLACKROAD OS — OFFICIAL DESIGN SYSTEM
 * ═══════════════════════════════════════════════════════
 *
 * ⚠️  IMPORTANT: THIS IS THE ONLY APPROVED DESIGN SYSTEM
 *
 * DO NOT CREATE DESIGNS OUTSIDE OF THIS SYSTEM.
 * ALL CLOUDFLARE PROJECTS MUST USE THESE EXACT VALUES.
 *
 * Brand Colors, Spacing, Typography, Animations
 * Source: blackroad-template-01-homepage.html
 *
 * ═══════════════════════════════════════════════════════
 */

:root {
    /* ========== BRAND COLORS ========== */
    --black: #000000;
    --white: #FFFFFF;
    --amber: #F5A623;
    --orange: #F26522;
    --hot-pink: #FF1D6C;
    --magenta: #E91E63;
    --electric-blue: #2979FF;
    --sky-blue: #448AFF;
    --violet: #9C27B0;
    --deep-purple: #5E35B1;

    /* ========== BRAND GRADIENT ========== */
    --gradient-brand: linear-gradient(135deg, var(--amber) 0%, var(--hot-pink) 38.2%, var(--violet) 61.8%, var(--electric-blue) 100%);

    /* ========== GOLDEN RATIO SPACING ========== */
    --phi: 1.618;
    --space-xs: 8px;
    --space-sm: 13px;
    --space-md: 21px;
    --space-lg: 34px;
    --space-xl: 55px;
    --space-2xl: 89px;
    --space-3xl: 144px;

    /* ========== ANIMATIONS ========== */
    --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', sans-serif;
    background: var(--black);
    color: var(--white);
    overflow-x: hidden;
    line-height: 1.618;
    -webkit-font-smoothing: antialiased;
}

/* ========== TYPOGRAPHY ========== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

h1 { font-size: calc(2.5rem * var(--phi)); }
h2 { font-size: calc(2rem * var(--phi)); }
h3 { font-size: calc(1.5rem * var(--phi)); }
h4 { font-size: calc(1.25rem * var(--phi)); }
h5 { font-size: calc(1rem * var(--phi)); }
h6 { font-size: 1rem; }

/* ========== BUTTONS ========== */
.btn {
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--space-xs);
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s var(--ease);
}

.btn-primary {
    background: var(--gradient-brand);
    color: var(--white);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(245, 166, 35, 0.3);
}

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

.btn-secondary:hover {
    background: var(--white);
    color: var(--black);
}

/* ========== CARDS ========== */
.card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: var(--space-md);
    padding: var(--space-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ========== NAVIGATION ========== */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: saturate(180%) blur(20px);
}

/* ========== SCROLL PROGRESS ========== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    background: var(--gradient-brand);
    z-index: 9999;
    width: 0%;
}

/* ========== GRADIENTS ========== */
.gradient-text {
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-border {
    position: relative;
    background: var(--black);
}

.gradient-border::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 2px;
    background: var(--gradient-brand);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

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

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

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

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

/* ========== UTILITY CLASSES ========== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

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

.mt-xs { margin-top: var(--space-xs); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-xs { margin-bottom: var(--space-xs); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    h1 { font-size: calc(1.5rem * var(--phi)); }
    h2 { font-size: calc(1.25rem * var(--phi)); }
    h3 { font-size: calc(1rem * var(--phi)); }

    .container {
        padding: 0 var(--space-md);
    }
}