/* LinkSafe - URL Shortening Service - Dark Theme CSS */
/* Based on RaceplayVideos styling */

:root {
    --color-dark: #0a0a0a;
    --color-darker: #141414;
    --color-blue: #0077CC;
    --color-purple: #7300ff;
    --color-white: #ffffff;
    --color-gray: #cccccc;
    --color-gray-dark: #666666;
    --color-border: #333333;
    --color-hover: #1a1a1a;
    --color-success: #28a745;
    --color-danger: #dc3545;
    --color-warning: #ffc107;
    
    --gradient-primary: linear-gradient(135deg, var(--color-blue), var(--color-purple));
    --gradient-secondary: linear-gradient(45deg, var(--color-purple), var(--color-blue));
    
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --border-radius: 4px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --transition: all 0.3s ease;
}

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

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--color-white);
    background-color: var(--color-dark);
    min-height: 100vh;
}

.bg-dark { background-color: var(--color-dark); }
.bg-darker { background-color: var(--color-darker); }

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    margin-bottom: 1rem;
}

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-muted { color: var(--color-gray-dark); }

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.main-content {
    min-height: calc(100vh - 160px);
    padding: 2rem 0;
    margin-bottom: 3rem;
    margin-top: 4rem;
}

/* Navigation */
.navbar {
    background-color: var(--color-darker);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-brand .logo {
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--color-white);
}

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

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

.nav-link {
    color: var(--color-gray);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    border: none;
    background: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link:hover {
    color: var(--color-white);
    background-color: var(--color-hover);
}

/* URL Shortener Section */
.url-shortener {
    background-color: var(--color-darker);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 3rem;
    border: 1px solid var(--color-border);
    text-align: center;
}

.url-shortener h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.url-shortener .subtitle {
    font-size: 1.125rem;
    color: var(--color-gray);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.url-form {
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
    margin-bottom: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
}

.advanced-options {
    width: 100%;
    margin: 0;
}
.advanced-options summary {
    color: var(--color-gray);
    cursor: pointer;
    margin-bottom: 1rem;
    font-weight: 500;
    font-size: 1.05rem;
    padding: 0.25rem 0;
    outline: none;
    user-select: none;
}
.advanced-options[open] summary {
    color: var(--color-blue);
}
.advanced-options-inner {
    background: var(--color-dark);
    padding: 1rem 1rem 2rem 1rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    margin-bottom: 0.5rem;
}
.advanced-options-inner label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--color-white);
}
.advanced-options-help {
    color: var(--color-gray-dark);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.url-input {
    flex: 1;
    padding: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background-color: var(--color-dark);
    color: var(--color-white);
    font-size: 1rem;
    transition: var(--transition);
}

.url-input:focus {
    outline: none;
    border-color: var(--color-blue);
    box-shadow: 0 0 0 3px rgba(0, 119, 204, 0.1);
}

.url-input::placeholder {
    color: var(--color-gray-dark);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    padding: 1rem 2rem;
    border: none;
    transition: var(--transition), box-shadow 0.2s;
    box-shadow: 0 2px 8px rgba(0,0,0,0.10);
    font-weight: 600;
    font-size: 1.1rem;
    position: relative;
    z-index: 1;
}
.btn-primary:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 8px 24px rgba(0, 119, 204, 0.18);
    filter: brightness(1.08);
}
.btn-primary:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(115,0,255,0.25);
}
.btn-primary:active {
    transform: scale(0.98);
    filter: brightness(0.95);
}
/* Advanced Options summary polish */
details summary {
    user-select: none;
    font-weight: 500;
    font-size: 1.05rem;
    padding: 0.25rem 0;
    outline: none;
    cursor: pointer;
}
details[open] summary {
    color: var(--color-blue);
}
@media (max-width: 600px) {
    .url-form {
        flex-direction: column;
        align-items: stretch;
        gap: 1.1rem;
        max-width: 100%;
    }
    .advanced-options,
    .advanced-options-inner,
    .url-input,
    .btn-primary {
        width: 100% !important;
        box-sizing: border-box;
    }
    .advanced-options-inner {
        padding-bottom: 2.5rem;
    }
    .btn-primary {
        padding: 1rem 0;
        font-size: 1rem;
        margin-top: 0.75rem;
    }
}

.btn-secondary {
    background-color: var(--color-border);
    color: var(--color-white);
}

.btn-secondary:hover {
    background-color: var(--color-gray-dark);
}

.btn-success {
    background-color: var(--color-success);
    color: var(--color-white);
}

.btn-success:hover {
    background-color: #218838;
    transform: translateY(-1px);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-full {
    width: 100%;
}

/* Result Display */
.result-container {
    background-color: var(--color-dark);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    border: 1px solid var(--color-success);
    margin: 1rem 0;
    display: none;
}

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

.result-url {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.short-url {
    flex: 1;
    padding: 0.75rem;
    background-color: var(--color-darker);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-white);
    font-family: monospace;
    font-size: 1.1rem;
}

.copy-btn {
    background-color: var(--color-blue);
    color: var(--color-white);
    border: none;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.copy-btn:hover {
    background-color: #0056b3;
}

.result-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Statistics Cards */
.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
    margin-top: 2.5rem;
}

.stat-card {
    background-color: var(--color-darker);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

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

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-blue);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--color-gray);
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
}

/* Recent Links Table */
.recent-links {
    background-color: var(--color-darker);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    overflow: hidden;
    margin-bottom: 2rem;
}

.section-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.section-header h2 {
    margin: 0;
    font-size: 1.25rem;
}

.table-container {
    overflow-x: auto;
}

.links-table {
    width: 100%;
    border-collapse: collapse;
}

.links-table th,
.links-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.links-table th {
    background-color: var(--color-hover);
    color: var(--color-gray);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

.links-table tr:hover {
    background-color: var(--color-hover);
}

.url-cell {
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.short-link {
    color: var(--color-blue);
    text-decoration: none;
    font-family: monospace;
}

.short-link:hover {
    text-decoration: underline;
}

.click-count {
    font-weight: 600;
    color: var(--color-success);
}

.date-cell {
    color: var(--color-gray);
    font-size: 0.875rem;
}

.actions-cell {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    background: none;
    border: none;
    color: var(--color-gray);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.action-btn:hover {
    background-color: var(--color-hover);
    color: var(--color-white);
}

.action-btn.delete:hover {
    color: var(--color-danger);
}

/* Features Section */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.feature-card {
    background-color: var(--color-darker);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--box-shadow);
}

.feature-icon {
    font-size: 3rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.feature-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--color-white);
}

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

/* Flash Messages */
.flash-message {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: var(--border-radius);
    position: relative;
}

.flash-success {
    background-color: rgba(40, 167, 69, 0.1);
    border-left: 4px solid var(--color-success);
    color: var(--color-success);
}

.flash-error {
    background-color: rgba(220, 53, 69, 0.1);
    border-left: 4px solid var(--color-danger);
    color: var(--color-danger);
}

.flash-warning {
    background-color: rgba(255, 193, 7, 0.1);
    border-left: 4px solid var(--color-warning);
    color: var(--color-warning);
}

/* Footer */
.footer {
    background-color: var(--color-darker);
    border-top: 1px solid var(--color-border);
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
    color: var(--color-gray-dark);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1rem;
}

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

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

/* Responsive Design */
@media (max-width: 768px) {
    .url-form {
        flex-direction: column;
    }
    
    .nav-menu {
        display: none;
    }
    
    .stats-container {
        grid-template-columns: 1fr;
    }
    
    .result-url {
        flex-direction: column;
        align-items: stretch;
    }
    
    .result-actions {
        flex-direction: column;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
    
    .main-content {
        margin-top: 1rem;
        padding: 1rem 0;
    }
    
    .url-shortener {
        padding: 1.5rem;
    }
    
    .url-shortener h1 {
        font-size: 2rem;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-radius: 50%;
    border-top-color: var(--color-blue);
    animation: spin 1s ease-in-out infinite;
}

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

/* Utility Classes */
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-5 { margin-bottom: 1.25rem; }
.mb-6 { margin-bottom: 1.5rem; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-5 { margin-top: 1.25rem; }
.mt-6 { margin-top: 1.5rem; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }

.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }

.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-5 { gap: 1.25rem; }
.gap-6 { gap: 1.5rem; }