/* ================================
   GPT OSS - Custom Styles
   Deep Blue + Cyan Tech Design
   ================================ */

/* Root Variables */
:root {
    --deep-blue: #0F172A;
    --navy-blue: #1E293B;
    --slate-800: #1E293B;
    --slate-900: #0F172A;
    --cyan-bright: #06B6D4;
    --cyan-dark: #0891B2;
    --cyan-alpha: rgba(6, 182, 212, 0.1);
    --cyan-alpha-light: rgba(6, 182, 212, 0.05);
    --glass-bg: rgba(30, 41, 59, 0.1);
    --glass-border: rgba(6, 182, 212, 0.2);
    --glass-blur: blur(20px);
    --content-max-width: 960px;
}

/* Global Styles */
* {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, var(--deep-blue) 0%, var(--navy-blue) 50%, var(--slate-900) 100%);
    background-attachment: fixed;
    overflow-x: hidden;
}

/* Glass Effects */
.glass-header {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    transition: all 0.3s ease;
    border-radius: 0 0 1rem 1rem;
    margin: 0 1rem;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 1.5rem;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--cyan-bright), transparent);
    opacity: 0.5;
}

.glass-card:hover {
    background: rgba(30, 41, 59, 0.15);
    border-color: var(--cyan-bright);
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(6, 182, 212, 0.1);
}

.glass-mini-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
}

.glass-mini-card:hover {
    background: var(--cyan-alpha);
    border-color: var(--cyan-bright);
    transform: scale(1.05);
}

/* Navigation Styles */
.nav-link {
    position: relative;
    padding: 0.5rem 1rem;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s ease;
    border-radius: 0.5rem;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--cyan-bright);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover {
    color: var(--cyan-bright);
    background: var(--cyan-alpha);
}

.nav-link:hover::before {
    width: 80%;
}

/* Hero Section */
.hero-title {
    position: relative;
    text-shadow: 0 0 50px rgba(6, 182, 212, 0.3);
    animation: glow 3s ease-in-out infinite alternate;
}

@keyframes glow {
    from {
        text-shadow: 0 0 50px rgba(6, 182, 212, 0.3);
    }
    to {
        text-shadow: 0 0 80px rgba(6, 182, 212, 0.5);
    }
}

/* Mega Numbers */
.mega-number {
    font-size: 8rem;
    font-weight: 900;
    background: linear-gradient(45deg, var(--cyan-bright), #60A5FA);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 100px rgba(6, 182, 212, 0.5);
    animation: pulse-glow 2s ease-in-out infinite alternate;
    line-height: 1;
}

@keyframes pulse-glow {
    from {
        filter: brightness(1);
        transform: scale(1);
    }
    to {
        filter: brightness(1.2);
        transform: scale(1.02);
    }
}

/* Step Numbers */
.step-number {
    width: 4rem;
    height: 4rem;
    background: linear-gradient(135deg, var(--cyan-bright), var(--cyan-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
    position: relative;
    transition: all 0.3s ease;
}

.step-number::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    background: linear-gradient(135deg, var(--cyan-bright), transparent, var(--cyan-dark));
    border-radius: 50%;
    z-index: -1;
    opacity: 0;
    transition: all 0.3s ease;
}

.step-number:hover {
    transform: scale(1.1);
    box-shadow: 0 10px 30px rgba(6, 182, 212, 0.3);
}

.step-number:hover::before {
    opacity: 1;
}

/* Feature Cards */
.feature-card {
    position: relative;
    overflow: hidden;
}

.feature-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(6, 182, 212, 0.1), transparent);
    transition: left 0.6s ease;
}

.feature-card:hover::after {
    left: 100%;
}

.feature-card i {
    transition: all 0.3s ease;
}

.feature-card:hover i {
    transform: scale(1.1) rotate(5deg);
    color: #22D3EE;
}

/* FAQ Styles */
.faq-item {
    transition: all 0.3s ease;
}

.faq-item:hover {
    background: rgba(30, 41, 59, 0.2);
}

.faq-button {
    transition: all 0.3s ease;
}

.faq-button:hover {
    color: var(--cyan-bright);
}

.faq-button.active .fa-chevron-down {
    transform: rotate(180deg);
}

.faq-content {
    animation: fadeInUp 0.3s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Code Block Styling */
pre {
    background: linear-gradient(135deg, #111827, #1F2937);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    position: relative;
    overflow: hidden;
}

pre::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--cyan-bright), #60A5FA, var(--cyan-bright));
}

code {
    font-family: 'JetBrains Mono', 'Monaco', 'Menlo', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Chart Container */
canvas {
    background: rgba(30, 41, 59, 0.05);
    border-radius: 0.5rem;
}

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

.animate-slide-up {
    animation: slideInUp 0.6s ease forwards;
}

/* Gradient Text Effects */
.gradient-text {
    background: linear-gradient(135deg, var(--cyan-bright), #60A5FA, #3B82F6);
    background-size: 200% 200%;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

/* Loading Spinner for Charts */
.chart-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 16rem;
    color: var(--cyan-bright);
}

.spinner {
    width: 3rem;
    height: 3rem;
    border: 4px solid rgba(6, 182, 212, 0.1);
    border-left: 4px solid var(--cyan-bright);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    .glass-header {
        margin: 0 0.5rem;
        border-radius: 0 0 0.5rem 0.5rem;
    }
    
    .mega-number {
        font-size: 4rem;
    }
    
    .hero-title {
        font-size: 3rem !important;
    }
    
    .step-number {
        width: 3rem;
        height: 3rem;
        font-size: 1.2rem;
    }
    
    .glass-card {
        border-radius: 1rem;
        margin: 0 0.5rem;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .glass-card {
        background: rgba(30, 41, 59, 0.3);
        border-color: var(--cyan-bright);
    }
    
    .nav-link {
        color: white;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .hero-title {
        animation: none;
    }
    
    .mega-number {
        animation: none;
    }
}

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

::-webkit-scrollbar-track {
    background: var(--deep-blue);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--cyan-bright), var(--cyan-dark));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #22D3EE, var(--cyan-bright));
}

/* Interactive Elements Focus States */
.nav-link:focus,
.faq-button:focus,
button:focus {
    outline: 2px solid var(--cyan-bright);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .glass-header,
    .glass-card {
        background: white !important;
        color: black !important;
        border: 1px solid #ccc !important;
    }
    
    .hero-title,
    .mega-number {
        color: black !important;
    }
}