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

:root {
    /* Colors */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #06b6d4;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #06b6d4 100%);
    --gradient-secondary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    
    /* Dark Theme */
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #16213e;
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-glass: rgba(255, 255, 255, 0.1);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-accent: #6366f1;
    
    /* Borders */
    --border-color: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.2);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 50px rgba(99, 102, 241, 0.3);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Typography */
    --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
}

/* ===== BASE STYLES ===== */
body {
    font-family: var(--font-family-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ===== BACKGROUND ANIMATION ===== */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.floating-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="1" fill="%236366f1" opacity="0.3"><animate attributeName="cy" values="20;80;20" dur="3s" repeatCount="indefinite"/></circle><circle cx="50" cy="40" r="1.5" fill="%2306b6d4" opacity="0.4"><animate attributeName="cy" values="40;10;40" dur="4s" repeatCount="indefinite"/></circle><circle cx="80" cy="60" r="1" fill="%238b5cf6" opacity="0.3"><animate attributeName="cy" values="60;90;60" dur="2.5s" repeatCount="indefinite"/></circle></svg>') repeat;
    animation: float 20s ease-in-out infinite;
}

.gradient-orbs {
    position: absolute;
    width: 100%;
    height: 100%;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(40px);
    opacity: 0.4;
    animation: drift 15s ease-in-out infinite;
}

.orb-1 {
    width: 300px;
    height: 300px;
    background: var(--gradient-primary);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.orb-2 {
    width: 200px;
    height: 200px;
    background: var(--gradient-accent);
    top: 60%;
    right: 10%;
    animation-delay: -5s;
}

.orb-3 {
    width: 250px;
    height: 250px;
    background: var(--gradient-secondary);
    bottom: 20%;
    left: 50%;
    animation-delay: -10s;
}

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(15, 15, 35, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition-normal);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 700;
    font-size: 1.25rem;
}

.brand-icon {
    color: var(--primary-color);
    font-size: 1.5rem;
    animation: pulse 2s ease-in-out infinite;
}

.brand-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: var(--transition-normal);
    padding: var(--space-sm) 0;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.github-link {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
}

.github-link:hover {
    background: var(--bg-secondary);
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-normal);
}

/* ===== HERO SECTION ===== */
.hero {
    padding: 120px 0 80px;
    text-align: center;
    position: relative;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    line-height: 1.2;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 3s ease-in-out infinite;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-3xl);
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-3xl);
    margin-top: var(--space-3xl);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--space-xs);
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
}

/* ===== GENERATOR SECTION ===== */
.generator-section {
    padding: var(--space-3xl) 0;
}

.generator-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    padding: var(--space-3xl);
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.generator-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
    opacity: 0.5;
}

.card-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.card-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
}

.card-title i {
    color: var(--primary-color);
    animation: spin 3s linear infinite;
}

.card-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* ===== FORM STYLES ===== */
.generator-form {
    display: grid;
    gap: var(--space-xl);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.form-label {
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.form-label i {
    color: var(--primary-color);
    width: 16px;
}

.form-select,
.form-textarea {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition-normal);
    resize: vertical;
}

.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-textarea {
    min-height: 120px;
    font-family: var(--font-family-primary);
    line-height: 1.6;
}

.input-counter {
    align-self: flex-end;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ===== COMPLEXITY SLIDER ===== */
.complexity-slider {
    position: relative;
}

.slider {
    width: 100%;
    height: 6px;
    background: var(--bg-secondary);
    border-radius: 3px;
    outline: none;
    appearance: none;
    margin-bottom: var(--space-md);
}

.slider::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--gradient-primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--gradient-primary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-md);
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ===== GENERATE BUTTON ===== */
.generate-btn {
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-lg);
    padding: var(--space-lg) var(--space-2xl);
    color: white;
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    transform: translateY(0);
    box-shadow: var(--shadow-lg);
}

.generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.generate-btn:active {
    transform: translateY(0);
}

.generate-btn.loading {
    pointer-events: none;
}

.btn-text {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    transition: var(--transition-normal);
}

.btn-loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: var(--transition-normal);
}

.generate-btn.loading .btn-text {
    opacity: 0;
}

.generate-btn.loading .btn-loader {
    opacity: 1;
}

.loader-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* ===== OUTPUT SECTION ===== */
.output-section {
    margin-top: var(--space-3xl);
    padding-top: var(--space-3xl);
    border-top: 1px solid var(--border-color);
    animation: slideUp 0.5s ease-out;
}

.output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.output-title {
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--success-color);
}

.output-actions {
    display: flex;
    gap: var(--space-sm);
}

.action-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.action-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.copy-btn:hover {
    color: var(--success-color);
    border-color: var(--success-color);
}

.save-btn:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
}

.share-btn:hover {
    color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.output-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.prompt-output {
    padding: var(--space-xl);
    font-family: var(--font-family-mono);
    font-size: 0.95rem;
    line-height: 1.6;
    white-space: pre-wrap;
    word-wrap: break-word;
    min-height: 150px;
    max-height: 500px;
    overflow-y: auto;
    color: var(--text-primary);
}

.output-stats {
    display: flex;
    justify-content: space-between;
    padding: var(--space-md) var(--space-xl);
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.875rem;
}

.stat-label {
    color: var(--text-muted);
    font-weight: 500;
}

.stat-value {
    color: var(--text-primary);
    font-weight: 600;
}

/* ===== FEATURES SECTION ===== */
.features-section {
    padding: var(--space-3xl) 0;
    background: linear-gradient(180deg, transparent 0%, rgba(99, 102, 241, 0.05) 100%);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.feature-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    text-align: center;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--border-hover);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    font-size: 1.5rem;
    color: white;
    animation: float 3s ease-in-out infinite;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== ABOUT SECTION ===== */
.about-section {
    padding: var(--space-3xl) 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.about-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

.about-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
}

.about-links {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.about-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-normal);
}

.about-link:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.tech-stack {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.tech-item {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    transition: var(--transition-normal);
    animation: float 4s ease-in-out infinite;
}

.tech-item:nth-child(2) { animation-delay: -1s; }
.tech-item:nth-child(3) { animation-delay: -2s; }
.tech-item:nth-child(4) { animation-delay: -3s; }

.tech-item:hover {
    transform: translateY(-5px) scale(1.05);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.tech-item i {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
    color: var(--primary-color);
}

.tech-item span {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 700;
    font-size: 1.125rem;
}

.footer-brand i {
    color: var(--primary-color);
    font-size: 1.25rem;
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-links a {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-normal);
}

.footer-links a:hover {
    color: var(--primary-color);
    transform: translateY(-1px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ===== TOAST NOTIFICATIONS ===== */
.toast-container {
    position: fixed;
    top: 80px;
    right: var(--space-lg);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.toast {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    color: var(--text-primary);
    box-shadow: var(--shadow-lg);
    animation: slideInRight 0.3s ease-out;
    min-width: 300px;
    position: relative;
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--error-color);
}

.toast.warning {
    border-left: 4px solid var(--warning-color);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-stats {
        gap: var(--space-xl);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
    }
    
    .generator-card {
        padding: var(--space-xl);
    }
    
    .output-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .output-stats {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .about-links {
        justify-content: center;
    }
    
    .tech-stack {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .generator-card {
        padding: var(--space-lg);
    }
    
    .card-title {
        font-size: 1.5rem;
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .output-actions {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .toast-container {
        right: var(--space-md);
        left: var(--space-md);
    }
    
    .toast {
        min-width: auto;
    }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    .header,
    .footer,
    .background-animation {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .generator-card {
        border: 1px solid #ccc !important;
        box-shadow: none !important;
    }
}