/* ===================================
   CSS Variables for Theme Switching
   =================================== */
:root {
    /* Light Mode Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-card: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    --accent-primary: #0066ff;
    --accent-secondary: #0052cc;
    --grid-color: rgba(0, 0, 0, 0.03);
    --shadow: rgba(0, 0, 0, 0.1);
    --code-bg: #f3f4f6;
    --success: #10b981;
    --error: #ef4444;
}

[data-theme="dark"] {
    /* Dark Mode Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --bg-card: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #9ca3af;
    --border-color: #2a2a2a;
    --accent-primary: #0084ff;
    --accent-secondary: #0066ff;
    --grid-color: rgba(255, 255, 255, 0.03);
    --shadow: rgba(0, 0, 0, 0.5);
    --code-bg: #0d0d0d;
    --success: #34d399;
    --error: #f87171;
}

/* ===================================
   Base Styles
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

/* ===================================
   Grid Background
   =================================== */
.grid-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
}

/* ===================================
   Navbar
   =================================== */
.navbar {
    position: sticky;
    top: 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px var(--shadow);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
}

.brand-icon {
    width: 24px;
    height: 24px;
    color: var(--accent-primary);
}

.brand-text {
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.theme-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-icon {
    width: 20px;
    height: 20px;
    color: var(--text-primary);
}

.theme-toggle:hover {
    transform: scale(1.05);
    background: var(--border-color);
}

/* ===================================
   Container
   =================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    position: relative;
    z-index: 1;
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    text-align: center;
    margin-bottom: 4rem;
    padding: 2rem 0;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.hero-powered {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.highlight {
    color: var(--accent-primary);
    font-weight: 600;
}

/* ===================================
   API Grid
   =================================== */
.api-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 350px), 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

/* ===================================
   API Cards
   =================================== */
.api-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.75rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px var(--shadow);
}

.api-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--shadow);
    border-color: var(--accent-primary);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: 10px;
}

.card-icon i {
    width: 24px;
    height: 24px;
    color: var(--accent-primary);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.card-description {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: 1.25rem;
    line-height: 1.6;
}

/* ===================================
   Endpoint Container
   =================================== */
.endpoint-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--code-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem;
    margin-bottom: 1rem;
}

.endpoint {
    flex: 1;
    font-size: 0.8125rem;
    color: var(--accent-primary);
    font-family: 'Monaco', 'Courier New', monospace;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.btn-copy {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    transition: transform 0.2s ease;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.copy-icon {
    width: 18px;
    height: 18px;
    color: var(--text-secondary);
}

.btn-copy:hover .copy-icon {
    color: var(--accent-primary);
}

.btn-copy:hover {
    transform: scale(1.1);
}

.btn-copy.copied .copy-icon {
    color: var(--success);
}

/* ===================================
   Buttons
   =================================== */
.btn-primary {
    width: 100%;
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 0.875rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary:hover {
    background: var(--accent-secondary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
}

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

/* ===================================
   Result Container
   =================================== */
.result-container {
    display: none;
    margin-top: 1rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    animation: slideDown 0.3s ease;
}

.result-container.show {
    display: block;
}

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

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    gap: 1rem;
    flex-wrap: wrap;
}

.result-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8125rem;
    font-weight: 600;
}

.status-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border: 1px solid var(--success);
}

.status-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
    border: 1px solid var(--error);
}

.btn-close {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.375rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8125rem;
    transition: all 0.2s ease;
}

.btn-close:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.response-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.info-label {
    font-size: 0.6875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.info-value {
    font-size: 0.875rem;
    color: var(--text-primary);
    font-weight: 600;
    font-family: 'Monaco', 'Courier New', monospace;
}

.json-output {
    background: var(--code-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    overflow-x: auto;
    font-size: 0.8125rem;
    font-family: 'Monaco', 'Courier New', monospace;
    color: var(--text-primary);
    white-space: pre-wrap;
    word-wrap: break-word;
    max-height: 400px;
    overflow-y: auto;
}

.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.loading-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

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

.footer-content {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    margin-top: 0.75rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
}

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

.separator {
    color: var(--border-color);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
    .container {
        padding: 1.5rem 1rem;
    }

    .hero {
        margin-bottom: 2.5rem;
        padding: 1rem 0;
    }

    .api-grid {
        gap: 1.5rem;
        margin-bottom: 2.5rem;
    }

    .api-card {
        padding: 1.5rem;
    }

    .endpoint {
        font-size: 0.75rem;
    }

    .response-info {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 1rem;
    }

    .brand-text {
        font-size: 1rem;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 0.9375rem;
    }

    .api-grid {
        gap: 1.25rem;
    }

    .response-info {
        grid-template-columns: 1fr;
    }

    .result-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

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