/* CSS Reset & Variables */
:root {
    --bg-primary: #0a0b12;
    --bg-secondary: #121424;
    --bg-tertiary: #1a1c32;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    /* Cosmic Palette */
    --clr-primary: #8b5cf6; /* Violet */
    --clr-secondary: #3b82f6; /* Blue */
    --clr-accent: #06b6d4; /* Cyan */
    --clr-success: #10b981; /* Emerald */
    --clr-danger: #ef4444; /* Rose */
    --clr-warning: #f59e0b; /* Amber */
    
    --grad-primary: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
    --grad-accent: linear-gradient(135deg, var(--clr-secondary), var(--clr-accent));
    --grad-glow: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(6, 182, 212, 0.15));
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-display: 'Outfit', sans-serif;
    --font-mono: 'Fira Code', monospace;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 25px rgba(139, 92, 246, 0.25);
    
    --border-glass: 1px solid rgba(255, 255, 255, 0.07);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

/* Background elements */
.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: center center;
    z-index: -2;
    pointer-events: none;
}

.glow-orb {
    position: fixed;
    width: 50vw;
    height: 50vw;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.12;
    z-index: -1;
    pointer-events: none;
}

.orb-1 {
    top: -10%;
    right: -10%;
    background: var(--clr-primary);
    animation: floatingOrbs 20s infinite alternate;
}

.orb-2 {
    bottom: -10%;
    left: -10%;
    background: var(--clr-accent);
    animation: floatingOrbs 25s infinite alternate-reverse;
}

@keyframes floatingOrbs {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(8%, 8%) scale(1.15); }
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 5px;
    border: 2px solid var(--bg-primary);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--clr-primary);
}

/* Typography & General Classes */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(135deg, var(--clr-accent), #a78bfa, var(--clr-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation Bar */
.navbar {
    position: sticky;
    top: 0;
    width: 100%;
    background: rgba(10, 11, 18, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: var(--border-glass);
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    text-decoration: none;
    color: var(--text-primary);
}

.python-logo-icon {
    font-size: 1.75rem;
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--text-primary);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

.github-link-btn {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.5rem 1rem;
    border-radius: 999px;
    border: var(--border-glass);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.github-link-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--clr-primary);
}

/* Hero Section */
.hero-section {
    max-width: 900px;
    margin: 6rem auto 4rem auto;
    text-align: center;
    padding: 0 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.25);
    padding: 0.4rem 1rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 500;
    color: #a78bfa;
    margin-bottom: 2rem;
    box-shadow: 0 0 15px rgba(139, 92, 246, 0.1);
}

.badge-dot {
    width: 6px;
    height: 6px;
    background-color: var(--clr-primary);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--clr-primary);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.4); opacity: 0.5; }
    100% { transform: scale(1); opacity: 1; }
}

.hero-title {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin-bottom: 2.5rem;
    font-weight: 300;
}

.hero-actions {
    display: flex;
    gap: 1.25rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1.75rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: var(--grad-primary);
    color: white;
    border: none;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 35px rgba(139, 92, 246, 0.45);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
    border: var(--border-glass);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--text-secondary);
    transform: translateY(-2px);
}

/* Sections General */
.playground-section, .features-section {
    max-width: 1200px;
    margin: 8rem auto;
    padding: 0 2rem;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
    font-weight: 300;
}

/* IDE / Playground Container */
.ide-container {
    background: var(--bg-secondary);
    border: var(--border-glass);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    position: relative;
}

.ide-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.4), transparent);
}

/* IDE Header */
.ide-header {
    background: rgba(18, 20, 36, 0.95);
    padding: 0.75rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: var(--border-glass);
}

.ide-dots {
    display: flex;
    gap: 0.45rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot-red { background-color: #ef4444; }
.dot-yellow { background-color: #f59e0b; }
.dot-green { background-color: #10b981; }

.ide-tabs {
    display: flex;
    flex-grow: 1;
    margin-left: 2rem;
}

.ide-tab {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 0.5rem 1.25rem;
    border-radius: 8px 8px 0 0;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-bottom: none;
}

.text-python {
    color: #38bdf8;
}

.ide-actions {
    display: flex;
    align-items: center;
}

.run-btn {
    background: var(--grad-primary);
    border: none;
    color: white;
    padding: 0.5rem 1.25rem;
    border-radius: 8px;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
    transition: var(--transition);
}

.run-btn:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 18px rgba(139, 92, 246, 0.5);
}

.run-btn:active {
    transform: scale(0.98);
}

.run-btn.loading {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    cursor: not-allowed;
    box-shadow: none;
}

/* IDE Body Split Screen */
.ide-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    height: 480px;
}

@media (max-width: 768px) {
    .ide-body {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr 1fr;
        height: 650px;
    }
}

/* Code Editor */
.editor-area {
    display: flex;
    background: rgba(14, 16, 29, 0.5);
    padding: 1rem;
    overflow: hidden;
    position: relative;
}

.line-numbers {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-muted);
    text-align: right;
    padding-right: 1rem;
    user-select: none;
    border-right: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
}

#code-editor {
    flex-grow: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.5rem;
    resize: none;
    padding-left: 1rem;
    white-space: pre;
    overflow-y: auto;
    tab-size: 4;
}

/* Console Output */
.console-area {
    background: #07080f;
    border-left: var(--border-glass);
    display: flex;
    flex-direction: column;
}

@media (max-width: 768px) {
    .console-area {
        border-left: none;
        border-top: var(--border-glass);
    }
}

.console-header {
    background: rgba(10, 11, 18, 0.6);
    padding: 0.6rem 1.25rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.clear-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.85rem;
}

.clear-btn:hover {
    color: var(--clr-danger);
}

.console-output {
    flex-grow: 1;
    padding: 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    overflow-y: auto;
    color: #e5e7eb;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.output-line {
    white-space: pre-wrap;
    word-break: break-all;
}

.output-line.system-msg {
    color: var(--text-muted);
    font-style: italic;
}

.output-line.stdout {
    color: var(--clr-success);
}

.output-line.stderr {
    color: var(--clr-danger);
    background: rgba(239, 68, 68, 0.05);
    padding: 0.5rem;
    border-left: 3px solid var(--clr-danger);
    border-radius: 0 4px 4px 0;
}

/* Snippets Container */
.snippets-container {
    margin-top: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.snippets-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.snippets-list {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.snippet-btn {
    background: rgba(255, 255, 255, 0.03);
    border: var(--border-glass);
    color: var(--text-secondary);
    padding: 0.4rem 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.snippet-btn:hover {
    background: rgba(139, 92, 246, 0.1);
    color: var(--text-primary);
    border-color: rgba(139, 92, 246, 0.4);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: rgba(18, 20, 36, 0.55);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: var(--border-glass);
    padding: 2.5rem 2rem;
    border-radius: 16px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--grad-glow);
    opacity: 0;
    transition: var(--transition);
    z-index: -1;
}

.feature-card:hover {
    transform: translateY(-6px);
    border-color: rgba(139, 92, 246, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon-wrapper {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.icon-purple {
    background: rgba(139, 92, 246, 0.15);
    color: #a78bfa;
}

.icon-blue {
    background: rgba(59, 130, 246, 0.15);
    color: #60a5fa;
}

.icon-cyan {
    background: rgba(6, 182, 212, 0.15);
    color: #22d3ee;
}

.feature-card-title {
    font-size: 1.35rem;
    margin-bottom: 0.75rem;
}

.feature-card-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 300;
}

/* Footer Section */
.footer {
    border-top: var(--border-glass);
    background: #05060b;
    padding: 3rem 2rem;
    margin-top: 6rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.text-red {
    color: var(--clr-danger);
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-link {
    text-decoration: none;
    color: var(--text-muted);
    transition: var(--transition);
}

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