/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #5865F2;
    --primary-dark: #4752C4;
    --primary-light: rgba(88, 101, 242, 0.1);
    --accent-primary: #00d4aa;
    --success: #57F287;
    --warning: #FEE75C;
    --danger: #ED4245;
    --info: #3498db;
    
    --bg-primary: #0a0a0f;
    --bg-secondary: #111118;
    --bg-tertiary: #1a1a24;
    --bg-card: #1e1e2e;
    --bg-hover: #252538;
    --bg-input: #2a2a3f;
    
    --text-primary: #ffffff;
    --text-secondary: #b4b4b8;
    --text-muted: #8a8a8f;
    
    --border: #333344;
    --border-hover: #444455;
    --border-focus: var(--primary);
    
    --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(88, 101, 242, 0.3);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Background and Grid */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: 
        radial-gradient(circle at 20% 20%, rgba(88, 101, 242, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 212, 170, 0.05) 0%, transparent 50%),
        linear-gradient(135deg, transparent 0%, rgba(88, 101, 242, 0.02) 100%);
    pointer-events: none;
    z-index: -1;
}

/* Header styles */
.header {
    background: rgba(17, 17, 24, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 700;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.02);
    color: var(--accent-primary);
}

.logo img {
    width: 32px;
    height: 32px;
    margin-right: 0.75rem;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
}

.nav {
    display: flex;
    gap: 0.5rem;
}

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.nav a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-light), transparent);
    opacity: 0;
    transition: var(--transition);
}

.nav a:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}

.nav a:hover::before {
    opacity: 1;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
    border-radius: 2px;
}

.nav-toggle:hover {
    background: var(--bg-hover);
}

.nav-toggle-open span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle-open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle-open span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.logo-text {
    display: inline;
}

/* Main content */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    min-height: calc(100vh - 200px);
}

.tool-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    animation: fadeIn 0.6s ease-out;
}

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

/* Tool header */
.tool-header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem;
    background: linear-gradient(135deg, var(--bg-card), var(--bg-tertiary));
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.tool-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(88, 101, 242, 0.05), transparent);
    pointer-events: none;
}

.tool-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 800;
}

.tool-header h1 .title-text {
    background: linear-gradient(135deg, var(--text-primary), var(--accent-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tool-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Tool sections */
.tool-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.tool-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0.5;
}

.tool-section:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-hover);
}

.tool-section h2 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 700;
}

.tool-section h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 600;
}

/* Form styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(88, 101, 242, 0.1);
    background: var(--bg-secondary);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

/* Button styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--text-primary);
    border: none;
    padding: 0.875rem 1.5rem;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent);
    opacity: 0;
    transition: var(--transition);
}

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

.btn:hover::before {
    opacity: 1;
}

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

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

.copy-btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    margin-left: 1rem;
}

/* Results display */
.result {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-top: 1rem;
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.result:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

.result-success {
    border-color: var(--success);
    background: linear-gradient(135deg, rgba(87, 242, 135, 0.05), var(--bg-tertiary));
    box-shadow: 0 0 20px rgba(87, 242, 135, 0.1);
}

.result-error {
    border-color: var(--danger);
    background: linear-gradient(135deg, rgba(237, 66, 69, 0.05), var(--bg-tertiary));
    color: var(--danger);
    box-shadow: 0 0 20px rgba(237, 66, 69, 0.1);
}

.result h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-weight: 700;
}

.result code {
    background: var(--bg-input);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    color: var(--accent-primary);
    border: 1px solid var(--border);
}

.result pre {
    background: var(--bg-input);
    padding: 1rem;
    border-radius: var(--radius-md);
    overflow-x: auto;
    border: 1px solid var(--border);
    font-size: 0.875rem;
}

/* Grid layouts */
.grid {
    display: grid;
    gap: 2rem;
}

.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.example-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.example-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-light), transparent);
    opacity: 0;
    transition: var(--transition);
}

.example-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

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

.example-card h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.example-card code {
    display: block;
    background: var(--bg-input);
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    margin: 0.5rem 0;
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    color: var(--accent-primary);
    word-break: break-all;
    font-size: 0.875rem;
}

.example-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 3rem 0 2rem;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
}

.footer p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
}

.footer-links a:hover {
    color: var(--accent-primary);
    background: var(--bg-hover);
}

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

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-hover);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}

/* Responsive design */
@media (max-width: 1024px) {
    .nav-toggle {
        display: flex;
    }

    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        border: 1px solid var(--border);
        border-top: none;
        border-radius: 0 0 var(--radius-md) var(--radius-md);
        padding: 1rem;
        flex-direction: column;
        gap: 0.5rem;
        box-shadow: var(--shadow-lg);
        z-index: 1000;
    }

    .nav.nav-open {
        display: flex;
    }

    .nav a {
        padding: 0.75rem 1rem;
        border-radius: var(--radius-md);
        text-align: center;
    }
}

@media (max-width: 768px) {
    .header-content {
        padding: 0 1rem;
    }

    .logo-text {
        display: none;
    }

    .main-content,
    .tool-container {
        padding: 1rem;
    }

    .tool-header {
        padding: 1.5rem;
        margin-bottom: 2rem;
    }

    .tool-header h1 {
        font-size: 2rem;
    }

    .tool-section {
        padding: 1.5rem;
    }

    .footer-links {
        flex-direction: column;
        gap: 0.5rem;
    }

    .examples-grid {
        grid-template-columns: 1fr;
    }
}

/* Utility classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.hidden { display: none; }
.flex { display: flex; }
.justify-center { justify-content: center; }
.align-center { align-items: center; }
.gap-2 { gap: 1rem; }

/* Loading states */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(88, 101, 242, 0.2), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    to {
        left: 100%;
    }
}

/* Smooth animations */
* {
    transition-property: color, background-color, border-color, text-decoration-color, fill, stroke, opacity, box-shadow, transform, filter, backdrop-filter;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    transition-duration: 150ms;
}

/* Focus styles for accessibility */
.btn:focus,
.nav a:focus,
.footer-links a:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border: #666677;
        --text-secondary: #cccccc;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}