/* ===================================
   BEYOND CLOUD TECHNOLOGY - BASE DESIGN SYSTEM
   =================================== */

/* Import Modern Typography */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ===================================
   CSS VARIABLES - DESIGN TOKENS
   =================================== */
:root {
    /* Dark Theme Colors */
    --color-bg-primary: #0a0e1a;
    --color-bg-secondary: #131829;
    --color-bg-tertiary: #1a2035;
    --color-bg-glass: rgba(26, 32, 53, 0.7);
    --color-bg-glass-hover: rgba(26, 32, 53, 0.85);

    /* Accent Colors */
    --color-accent-primary: #6366f1;
    --color-accent-secondary: #8b5cf6;
    --color-accent-success: #10b981;
    --color-accent-warning: #f59e0b;
    --color-accent-danger: #ef4444;
    --color-accent-info: #3b82f6;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-danger: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    --gradient-warning: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);

    /* Text Colors */
    --color-text-primary: #f8fafc;
    --color-text-secondary: #cbd5e1;
    --color-text-tertiary: #94a3b8;
    --color-text-muted: #64748b;

    /* Border & Shadow */
    --color-border: rgba(148, 163, 184, 0.1);
    --color-border-hover: rgba(148, 163, 184, 0.2);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===================================
   GLOBAL RESET & BASE STYLES
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    transition: background var(--transition-base), color var(--transition-base);
}

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 30%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* ===================================
   LAYOUT STRUCTURE
   =================================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    animation: fadeInDown 0.6s ease-out;
    position: relative;
    display: block;
}

.header-content {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.title {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0;
    line-height: 1.2;
}

.title-icon {
    width: 2.5rem;
    height: 2.5rem;
    stroke: url(#gradient);
    color: var(--color-accent-primary);
    filter: drop-shadow(0 0 10px rgba(99, 102, 241, 0.5));
    margin-bottom: var(--spacing-xs);
}

.subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    font-weight: 300;
    margin-bottom: var(--spacing-sm);
}

/* YouTube Link */
.youtube-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, #FF0000 0%, #CC0000 100%);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.875rem;
    box-shadow: 0 2px 8px rgba(255, 0, 0, 0.3);
    transition: all var(--transition-base);
    animation: pulse-glow 2s ease-in-out infinite;
    margin-top: var(--spacing-md);
}

.youtube-link:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 4px 15px rgba(255, 0, 0, 0.5);
    animation: none;
    color: white;
}

.youtube-icon {
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
}

@keyframes pulse-glow {

    0%,
    100% {
        box-shadow: 0 2px 8px rgba(255, 0, 0, 0.3);
    }

    50% {
        box-shadow: 0 2px 15px rgba(255, 0, 0, 0.5);
    }
}

/* Footer */
.footer {
    text-align: center;
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* ===================================
   GLASS PANEL COMPONENT
   =================================== */
.panel {
    background: var(--color-bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.panel:hover {
    background: var(--color-bg-glass-hover);
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-lg);
}

.panel-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.panel-icon {
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    font-size: 1.25rem;
}

.panel-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 640px) {
    .container {
        padding: var(--spacing-md);
    }

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