/* ShortLink CSS System */
:root {
    /* Typography - Red Hat Display */
    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    --font-size-3xl: 1.875rem;  /* 30px */
    --font-size-4xl: 2.25rem;   /* 36px */
    --font-size-5xl: 3rem;      /* 48px */
    
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Primary Colors */
    --color-primary-50: #eff6ff;
    --color-primary-100: #dbeafe;
    --color-primary-200: #bfdbfe;
    --color-primary-300: #93c5fd;
    --color-primary-400: #60a5fa;
    --color-primary-500: #3b82f6;
    --color-primary-600: #2563eb;
    --color-primary-700: #1d4ed8;
    --color-primary-800: #1e40af;
    --color-primary-900: #1e3a8a;
    
    /* Neutral Colors */
    --color-neutral-50: #f9fafb;
    --color-neutral-100: #f3f4f6;
    --color-neutral-200: #e5e7eb;
    --color-neutral-300: #d1d5db;
    --color-neutral-400: #9ca3af;
    --color-neutral-500: #6b7280;
    --color-neutral-600: #4b5563;
    --color-neutral-700: #374151;
    --color-neutral-800: #1f2937;
    --color-neutral-900: #111827;
    
    /* Semantic Colors */
    --color-success-50: #f0fdf4;
    --color-success-500: #22c55e;
    --color-success-600: #16a34a;
    --color-success-700: #15803d;
    
    --color-error-50: #fef2f2;
    --color-error-500: #ef4444;
    --color-error-600: #dc2626;
    --color-error-700: #b91c1c;
    
    --color-warning-50: #fffbeb;
    --color-warning-500: #f59e0b;
    --color-warning-600: #d97706;
    --color-warning-700: #b45309;
    
    --color-info-50: #eff6ff;
    --color-info-500: #3b82f6;
    --color-info-600: #2563eb;
    --color-info-700: #1d4ed8;
    
    /* Spacing Scale */
    --space-0: 0;
    --space-1: 0.25rem;  /* 4px */
    --space-2: 0.5rem;   /* 8px */
    --space-3: 0.75rem;  /* 12px */
    --space-4: 1rem;     /* 16px */
    --space-5: 1.25rem;  /* 20px */
    --space-6: 1.5rem;   /* 24px */
    --space-8: 2rem;     /* 32px */
    --space-10: 2.5rem;  /* 40px */
    --space-12: 3rem;    /* 48px */
    --space-16: 4rem;    /* 64px */
    --space-20: 5rem;    /* 80px */
    --space-24: 6rem;    /* 96px */
    
    /* Transitions */
    --transition-fast: 0.1s ease-out;
    --transition-normal: 0.15s ease-out;
    --transition-slow: 0.3s ease-out;
}

/* Base Styles */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Red Hat Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-neutral-900);
    margin: 0;
    padding: 0;
    background-color: white;
}

/* Container System */
.container {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1rem;
    padding-right: 1rem;
}

@media (min-width: 640px) { .container { max-width: 640px; } }
@media (min-width: 768px) { .container { max-width: 768px; } }
@media (min-width: 1024px) { .container { max-width: 1024px; } }
@media (min-width: 1280px) { .container { max-width: 1280px; } }

/* Navigation */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) 0;
    border-bottom: 1px solid var(--color-neutral-200);
    background-color: white;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-neutral-900);
    text-decoration: none;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    list-style: none;
    margin: 0;
    padding: 0;
}

.navbar-link {
    color: var(--color-neutral-600);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-normal);
}

.navbar-link:hover,
.navbar-link.active {
    color: var(--color-primary-600);
}

.navbar-text {
    color: var(--color-neutral-500);
    font-size: var(--font-size-sm);
}

/* Icons */
.icon {
    width: 1rem;
    height: 1rem;
    stroke-width: 2;
    color: currentColor;
}

.icon-sm { width: 0.875rem; height: 0.875rem; }
.icon-lg { width: 1.25rem; height: 1.25rem; }
.icon-xl { width: 1.5rem; height: 1.5rem; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    border: 1px solid transparent;
    border-radius: 0.5rem;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: 1.25;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    user-select: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--color-primary-600);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-700);
}

.btn-secondary {
    background-color: var(--color-neutral-100);
    color: var(--color-neutral-700);
    border-color: var(--color-neutral-300);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-neutral-200);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary-600);
    border-color: var(--color-primary-600);
}

.btn-outline:hover:not(:disabled) {
    background-color: var(--color-primary-50);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-base);
}

.btn-link {
    background: none;
    border: none;
    color: var(--color-primary-600);
    cursor: pointer;
    text-decoration: none;
    font-size: var(--font-size-sm);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

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

/* Forms */
.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-neutral-700);
}

.form-input {
    display: block;
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--color-neutral-300);
    border-radius: 0.5rem;
    font-size: var(--font-size-base);
    line-height: 1.5;
    background-color: white;
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-input-lg {
    padding: var(--space-4) var(--space-6);
    font-size: var(--font-size-lg);
}

.form-help {
    margin-top: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-neutral-500);
}

.input-group {
    position: relative;
    display: flex;
    align-items: stretch;
    gap: var(--space-2);
}

.input-group .form-input {
    flex: 1;
}

/* Cards */
.card {
    background-color: white;
    border: 1px solid var(--color-neutral-200);
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    overflow: hidden;
    margin: var(--space-8) 0;
}

.card-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-neutral-200);
    background-color: var(--color-neutral-50);
}

.card-body {
    padding: var(--space-6);
}

.card-title {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-neutral-900);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

/* Alerts */
.alert {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4);
    border-radius: 0.5rem;
    margin-bottom: var(--space-4);
}

.alert-success {
    background-color: var(--color-success-50);
    color: var(--color-success-700);
    border: 1px solid var(--color-success-200);
}

.alert-error {
    background-color: var(--color-error-50);
    color: var(--color-error-700);
    border: 1px solid var(--color-error-200);
}

.alert-warning {
    background-color: var(--color-warning-50);
    color: var(--color-warning-700);
    border: 1px solid var(--color-warning-200);
}

.alert-info {
    background-color: var(--color-info-50);
    color: var(--color-info-700);
    border: 1px solid var(--color-info-200);
}

.error-list {
    margin: 0;
    padding-left: var(--space-4);
}

/* Homepage Hero */
.hero {
    padding: var(--space-16) 0;
    background: linear-gradient(135deg, var(--color-primary-50) 0%, var(--color-neutral-50) 100%);
}

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

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-neutral-900);
    margin-bottom: var(--space-4);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-neutral-600);
    margin-bottom: var(--space-8);
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

.url-form {
    max-width: 600px;
    margin: 0 auto var(--space-8);
}

.advanced-options {
    margin-top: var(--space-4);
    text-align: center;
}

.advanced-panel {
    margin-top: var(--space-4);
    padding: var(--space-4);
    background: var(--color-neutral-50);
    border-radius: 0.5rem;
}

.chevron {
    transition: transform var(--transition-normal);
}

/* Created Link Display */
.created-link {
    margin-bottom: var(--space-8);
}

.link-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.link-row {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.link-row label {
    font-weight: var(--font-weight-medium);
    color: var(--color-neutral-700);
    font-size: var(--font-size-sm);
}

.link-value {
    display: flex;
    gap: var(--space-2);
    align-items: center;
}

.link-value .form-input {
    flex: 1;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
}

.truncated-url {
    color: var(--color-neutral-600);
    font-size: var(--font-size-sm);
}

.text-success {
    color: var(--color-success-600);
}

/* Features Section */
.features {
    padding: var(--space-20) 0;
}

.section-title {
    text-align: center;
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-neutral-900);
    margin-bottom: var(--space-12);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-8);
}

.feature-card {
    text-align: center;
    padding: var(--space-6);
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    margin: 0 auto var(--space-4);
    background: var(--color-primary-100);
    border-radius: 50%;
    color: var(--color-primary-600);
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-neutral-900);
    margin-bottom: var(--space-2);
}

.feature-description {
    color: var(--color-neutral-600);
    margin: 0;
}

.cta-section {
    text-align: center;
    margin-top: var(--space-16);
    padding: var(--space-12);
    background: var(--color-primary-50);
    border-radius: 1rem;
}

.cta-section h3 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-neutral-900);
    margin-bottom: var(--space-4);
}

.cta-section p {
    font-size: var(--font-size-lg);
    color: var(--color-neutral-600);
    margin-bottom: var(--space-6);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Footer */
.footer {
    margin-top: var(--space-16);
    padding: var(--space-8) 0;
    border-top: 1px solid var(--color-neutral-200);
    background: var(--color-neutral-50);
    text-align: center;
    color: var(--color-neutral-600);
    font-size: var(--font-size-sm);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    .navbar-nav {
        gap: var(--space-4);
    }
    
    .navbar-text {
        display: none;
    }
    
    /* Auth page mobile adjustments */
    .auth-container {
        padding: 0.5rem;
    }
    
    .auth-card {
        max-width: 100%;
        padding: 1.5rem;
    }
    
    .auth-title {
        font-size: 1.5rem;
    }
    
    .form-row {
        flex-direction: column;
        gap: 0.5rem;
        align-items: stretch;
    }
}

/* Authentication Pages */
.auth-page {
    background: linear-gradient(135deg, var(--color-primary-50) 0%, var(--color-neutral-50) 100%);
    min-height: 100vh;
}

.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 1rem;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: white;
    border-radius: 1rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    padding: 2rem;
}

.auth-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.auth-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-neutral-900);
    margin-bottom: 0.5rem;
}

.auth-subtitle {
    color: var(--color-neutral-600);
    font-size: 1rem;
    margin: 0;
}

.input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-neutral-400);
    z-index: 2;
}

.input-icon + .form-input {
    padding-left: 3rem;
}

.input-action {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--color-neutral-400);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 0.25rem;
    z-index: 2;
}

.form-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-neutral-700);
    cursor: pointer;
}

.form-checkbox {
    width: 1rem;
    height: 1rem;
    border: 1px solid var(--color-neutral-300);
    border-radius: 0.25rem;
}

.btn-full {
    width: 100%;
}

.auth-footer {
    margin-top: 1.5rem;
    text-align: center;
}

.auth-footer-text {
    margin: 0.5rem 0;
    color: var(--color-neutral-600);
    font-size: 0.875rem;
}

.auth-link {
    color: var(--color-primary-600);
    text-decoration: none;
    font-weight: 500;
}

.auth-divider {
    margin: 1rem 0;
    position: relative;
    text-align: center;
}

.auth-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--color-neutral-200);
}

.auth-divider span {
    background: white;
    padding: 0 1rem;
    color: var(--color-neutral-500);
    font-size: 0.875rem;
}

/* Content Pages */
.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-8);
}

.content-header h1 {
    margin: 0;
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-neutral-900);
}

.form-actions {
    display: flex;
    gap: var(--space-4);
    margin-top: var(--space-8);
}

.empty-state {
    text-align: center;
    padding: var(--space-16);
    color: var(--color-neutral-500);
}

.empty-state h3 {
    margin: var(--space-4) 0 var(--space-2);
    color: var(--color-neutral-700);
}

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

.link-info .link-title {
    font-weight: var(--font-weight-medium);
    color: var(--color-neutral-900);
    margin-bottom: var(--space-1);
}

.short-url a {
    color: var(--color-primary-600);
    text-decoration: none;
    font-family: 'SF Mono', Monaco, monospace;
    font-size: var(--font-size-sm);
}

.long-url {
    color: var(--color-neutral-600);
    font-size: var(--font-size-sm);
}

.click-count {
    font-weight: var(--font-weight-semibold);
    color: var(--color-neutral-900);
}

.created-date {
    color: var(--color-neutral-600);
    font-size: var(--font-size-sm);
}

.link-actions {
    display: flex;
    gap: var(--space-2);
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border: none;
    background: var(--color-neutral-100);
    border-radius: 0.375rem;
    color: var(--color-neutral-600);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-icon:hover {
    background: var(--color-neutral-200);
    color: var(--color-neutral-800);
}

/* Installer Styles */
.installer-header {
    background-color: var(--color-primary-600);
    color: white;
    text-align: center;
}

.installer-title {
    color: white;
    margin: 0;
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
}

.installer-subtitle {
    color: rgba(255, 255, 255, 0.9);
    margin: 0.5rem 0 0 0;
    font-size: var(--font-size-base);
}

.requirement-list {
    background: var(--color-neutral-50);
    padding: var(--space-6);
    border-radius: 0.5rem;
    margin-bottom: var(--space-6);
    list-style: none;
    margin-left: 0;
    padding-left: var(--space-6);
}

.requirement-item {
    display: flex;
    align-items: center;
    padding: var(--space-3) var(--space-4);
    margin-bottom: var(--space-2);
    border-radius: 0.25rem;
    list-style: none;
}

.requirement-item:last-child {
    margin-bottom: 0;
}

.requirement-item.success {
    background-color: var(--color-success-50);
    border-left: 4px solid var(--color-success-500);
}

.requirement-item.error {
    background-color: var(--color-error-50);
    border-left: 4px solid var(--color-error-500);
}

.requirement-icon {
    margin-right: var(--space-3);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
}

.requirement-text {
    color: var(--color-neutral-700);
    font-weight: var(--font-weight-medium);
}

.installer-step {
    margin-bottom: var(--space-6);
    color: var(--color-neutral-900);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
}

.installer-container {
    margin-top: var(--space-8);
    margin-bottom: var(--space-8);
}

.installer-card {
    max-width: 600px;
    margin: 0 auto;
}

.alert {
    padding: var(--space-4);
    border-radius: 0.5rem;
    margin-bottom: var(--space-4);
    border-left: 4px solid;
}

.alert-error {
    background-color: var(--color-error-50);
    color: var(--color-error-700);
    border-left-color: var(--color-error-500);
}

.alert-success {
    background-color: var(--color-success-50);
    color: var(--color-success-700);
    border-left-color: var(--color-success-500);
}

/* Dashboard Layout */
.dashboard {
    display: flex;
    min-height: 100vh;
    background-color: var(--color-neutral-50);
}

.sidebar {
    width: 260px;
    background-color: white;
    border-right: 1px solid var(--color-neutral-200);
    padding: var(--space-6) 0;
    flex-shrink: 0;
}

.sidebar-nav {
    padding: 0 var(--space-4);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    margin-bottom: var(--space-1);
    border-radius: 0.5rem;
    color: var(--color-neutral-600);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    transition: all var(--transition-normal);
}

.sidebar-link:hover,
.sidebar-link.active {
    background-color: var(--color-primary-50);
    color: var(--color-primary-600);
}

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-1) var(--space-2);
    background-color: var(--color-neutral-200);
    color: var(--color-neutral-600);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border-radius: 9999px;
    min-width: 1.5rem;
    margin-left: auto;
}

.sidebar-link.active .badge {
    background-color: var(--color-primary-200);
    color: var(--color-primary-700);
}

.dashboard-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Dashboard Header */
.dashboard-header {
    background-color: white;
    border-bottom: 1px solid var(--color-neutral-200);
    padding: var(--space-6) var(--space-8);
}

.dashboard-header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-4);
}

.dashboard-title-section {
    min-width: 0;
    flex: 1;
}

.dashboard-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-neutral-900);
    margin: 0 0 var(--space-1) 0;
}

.dashboard-subtitle {
    color: var(--color-neutral-600);
    font-size: var(--font-size-sm);
    margin: 0;
}

.dashboard-actions {
    display: flex;
    gap: var(--space-3);
    align-items: center;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-8);
    padding: var(--space-8) var(--space-8) 0;
}

.stat-card {
    background-color: white;
    border: 1px solid var(--color-neutral-200);
    border-radius: 0.75rem;
    padding: var(--space-6);
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
}

.stat-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background-color: var(--color-primary-100);
    border-radius: 0.5rem;
    color: var(--color-primary-600);
    margin-bottom: var(--space-4);
}

.stat-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.stat-value {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-neutral-900);
    line-height: 1;
}

.stat-label {
    color: var(--color-neutral-600);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.stat-change {
    color: var(--color-neutral-500);
    font-size: var(--font-size-xs);
    margin-top: var(--space-1);
}

/* Content Sections */
.dashboard-content {
    flex: 1;
    padding: var(--space-8);
    overflow-y: auto;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
}

.content-section {
    background-color: white;
    border: 1px solid var(--color-neutral-200);
    border-radius: 0.75rem;
    overflow: hidden;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-neutral-200);
    background-color: var(--color-neutral-50);
}

.section-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-neutral-900);
    margin: 0;
}

.section-action {
    color: var(--color-primary-600);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-normal);
}

.section-action:hover {
    color: var(--color-primary-700);
}

/* Link Display */
.link-list {
    display: flex;
    flex-direction: column;
}

.link-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-6);
    border-bottom: 1px solid var(--color-neutral-100);
    transition: background-color var(--transition-normal);
}

.link-item:last-child {
    border-bottom: none;
}

.link-item:hover {
    background-color: var(--color-neutral-50);
}

.link-info {
    flex: 1;
    min-width: 0;
}

.link-title {
    font-weight: var(--font-weight-medium);
    color: var(--color-neutral-900);
    margin: 0 0 var(--space-1) 0;
    font-size: var(--font-size-sm);
}

.link-status {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    margin-left: var(--space-2);
}

.link-status.inactive {
    color: var(--color-neutral-500);
}

.link-urls {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.short-url {
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
    font-size: var(--font-size-sm);
    color: var(--color-primary-600);
    text-decoration: none;
}

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

.long-url {
    color: var(--color-neutral-600);
    font-size: var(--font-size-xs);
    word-break: break-all;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.link-stats {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    font-size: var(--font-size-sm);
}

.link-clicks {
    font-weight: var(--font-weight-semibold);
    color: var(--color-neutral-900);
}

.link-date {
    color: var(--color-neutral-500);
    font-size: var(--font-size-xs);
}

.link-actions {
    display: flex;
    gap: var(--space-2);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.link-item:hover .link-actions {
    opacity: 1;
}

/* Performance/Activity */
.top-links-list {
    display: flex;
    flex-direction: column;
}

.top-link-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-6);
    border-bottom: 1px solid var(--color-neutral-100);
}

.top-link-item:last-child {
    border-bottom: none;
}

.rank-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
}

.rank-badge.rank-1 {
    background-color: #ffd700;
    color: #8b6914;
}

.rank-badge.rank-2 {
    background-color: #c0c0c0;
    color: #4a4a4a;
}

.rank-badge.rank-3 {
    background-color: #cd7f32;
    color: #fff;
}

.rank-badge:not(.rank-1):not(.rank-2):not(.rank-3) {
    background-color: var(--color-neutral-200);
    color: var(--color-neutral-600);
}

.link-performance {
    flex: 1;
    min-width: 0;
}

.clicks-count {
    font-weight: var(--font-weight-semibold);
    color: var(--color-neutral-900);
    font-size: var(--font-size-sm);
}

.clicks-label {
    color: var(--color-neutral-500);
    font-size: var(--font-size-xs);
    margin-left: var(--space-1);
}

.activity-list {
    display: flex;
    flex-direction: column;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    border-bottom: 1px solid var(--color-neutral-100);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    background-color: var(--color-primary-100);
    border-radius: 50%;
    color: var(--color-primary-600);
    flex-shrink: 0;
}

.activity-content {
    flex: 1;
    min-width: 0;
}

.activity-text {
    color: var(--color-neutral-900);
    font-size: var(--font-size-sm);
    margin: 0 0 var(--space-1) 0;
}

.activity-meta {
    color: var(--color-neutral-500);
    font-size: var(--font-size-xs);
    margin: 0;
}

/* Empty State */
.empty-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 4rem;
    height: 4rem;
    background-color: var(--color-neutral-100);
    border-radius: 50%;
    color: var(--color-neutral-400);
    margin: 0 auto var(--space-4);
}

.empty-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-neutral-700);
    margin: 0 0 var(--space-2) 0;
}

.empty-description {
    color: var(--color-neutral-500);
    font-size: var(--font-size-sm);
    margin: 0;
    line-height: 1.5;
}

/* Dashboard Responsive Design */
@media (max-width: 768px) {
    .dashboard {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        padding: var(--space-4) 0;
        border-right: none;
        border-bottom: 1px solid var(--color-neutral-200);
    }
    
    .sidebar-nav {
        display: flex;
        overflow-x: auto;
        gap: var(--space-2);
        padding: 0 var(--space-4);
    }
    
    .sidebar-link {
        white-space: nowrap;
        margin-bottom: 0;
    }
    
    .dashboard-header {
        padding: var(--space-4);
    }
    
    .dashboard-header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3);
    }
    
    .dashboard-actions {
        width: 100%;
        justify-content: flex-start;
    }
    
    .dashboard-content {
        padding: var(--space-4);
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: var(--space-4);
    }
}

/* Enhanced Interactive Elements */
.btn-icon {
    position: relative;
    overflow: hidden;
}

.btn-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(59, 130, 246, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.3s ease, height 0.3s ease;
}

.btn-icon:active::before {
    width: 100%;
    height: 100%;
}

.btn-icon.success {
    background: var(--color-success-100);
    color: var(--color-success-600);
    transform: scale(1.05);
    transition: all 0.2s ease;
}

.btn-icon.success::after {
    content: '✓';
    position: absolute;
    top: -5px;
    right: -5px;
    width: 16px;
    height: 16px;
    background: var(--color-success-500);
    color: white;
    border-radius: 50%;
    font-size: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: successPulse 0.5s ease;
}

@keyframes successPulse {
    0% { transform: scale(0); opacity: 0; }
    50% { transform: scale(1.2); opacity: 1; }
    100% { transform: scale(1); opacity: 1; }
}

/* Form Enhancement Styles */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-6);
}

.form-input.error {
    border-color: var(--color-error-500);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-input.success {
    border-color: var(--color-success-500);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.field-error {
    color: var(--color-error-600);
    font-size: var(--font-size-xs);
    margin-top: var(--space-1);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.field-success {
    color: var(--color-success-600);
    font-size: var(--font-size-xs);
    margin-top: var(--space-1);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

/* URL Preview Styles */
.url-preview {
    background: var(--color-neutral-50);
    border: 1px solid var(--color-neutral-200);
    border-radius: 0.5rem;
    padding: var(--space-4);
    margin-top: var(--space-4);
}

.preview-section {
    margin-bottom: var(--space-4);
}

.preview-section:last-child {
    margin-bottom: 0;
}

.preview-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-neutral-700);
    margin-bottom: var(--space-2);
}

.preview-url {
    background: white;
    border: 1px solid var(--color-neutral-300);
    border-radius: 0.375rem;
    padding: var(--space-3) var(--space-4);
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
    font-size: var(--font-size-sm);
    color: var(--color-neutral-800);
    word-break: break-all;
    line-height: 1.4;
    min-height: 2.5rem;
    display: flex;
    align-items: center;
}

.preview-url.empty {
    color: var(--color-neutral-500);
    font-style: italic;
}

/* Loading States */
.btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.btn-primary.loading::after {
    border-top-color: white;
}

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

/* Toast Notification System */
.toast-container {
    position: fixed;
    top: var(--space-4);
    right: var(--space-4);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    max-width: 400px;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
    background: white;
    border: 1px solid var(--color-neutral-200);
    border-radius: 0.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    transform: translateX(100%);
    opacity: 0;
    animation: slideIn 0.3s ease forwards;
}

.toast.removing {
    animation: slideOut 0.3s ease forwards;
}

@keyframes slideIn {
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

.toast-success {
    border-left: 4px solid var(--color-success-500);
}

.toast-error {
    border-left: 4px solid var(--color-error-500);
}

.toast-info {
    border-left: 4px solid var(--color-info-500);
}

.toast-icon {
    flex-shrink: 0;
    width: 1.25rem;
    height: 1.25rem;
}

.toast-content {
    flex: 1;
    min-width: 0;
}

.toast-title {
    font-weight: var(--font-weight-medium);
    color: var(--color-neutral-900);
    margin: 0 0 var(--space-1) 0;
    font-size: var(--font-size-sm);
}

.toast-message {
    color: var(--color-neutral-600);
    font-size: var(--font-size-xs);
    margin: 0;
    line-height: 1.4;
}

.toast-close {
    background: none;
    border: none;
    color: var(--color-neutral-400);
    cursor: pointer;
    padding: var(--space-1);
    border-radius: 0.25rem;
    flex-shrink: 0;
}

.toast-close:hover {
    color: var(--color-neutral-600);
}

/* Enhanced Mobile Interactions */
@media (max-width: 768px) {
    .link-actions {
        opacity: 1;
        position: static;
    }
    
    .btn-icon {
        min-width: 44px;
        min-height: 44px;
        width: 44px;
        height: 44px;
    }
    
    .toast-container {
        left: var(--space-4);
        right: var(--space-4);
        max-width: none;
    }
    
    .preview-url {
        font-size: var(--font-size-xs);
        padding: var(--space-2) var(--space-3);
    }
}
    
    .stat-card {
        padding: var(--space-4);
    }
    
    .content-grid {
        gap: var(--space-6);
    }
    
    .link-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3);
        padding: var(--space-4);
    }
    
    .link-stats {
        width: 100%;
        justify-content: space-between;
    }
    
    .link-actions {
        opacity: 1;
        width: 100%;
        justify-content: flex-end;
    }
    
    .top-link-item {
        padding: var(--space-3) var(--space-4);
    }
    
    .activity-item {
        padding: var(--space-3) var(--space-4);
    }
}

/* Admin User Management */
.admin-user-list {
    display: flex;
    flex-direction: column;
    background-color: white;
    border: 1px solid var(--color-neutral-200);
    border-radius: 0.75rem;
    overflow: hidden;
}

.admin-user-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-neutral-100);
    transition: background-color var(--transition-normal);
}

.admin-user-item:last-child {
    border-bottom: none;
}

.admin-user-item:hover {
    background-color: var(--color-neutral-50);
}

.user-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.user-details {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-wrap: wrap;
}

.user-email {
    font-weight: var(--font-weight-medium);
    color: var(--color-neutral-900);
    font-size: var(--font-size-base);
}

.user-meta {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--color-neutral-600);
}

.user-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-1) var(--space-2);
    border-radius: 9999px;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border: 1px solid transparent;
}

.user-badge.self {
    background-color: var(--color-info-50);
    color: var(--color-info-700);
    border-color: var(--color-info-200);
}

.user-badge.inactive {
    background-color: var(--color-neutral-100);
    color: var(--color-neutral-600);
    border-color: var(--color-neutral-200);
}

.user-role {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.role-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2) var(--space-3);
    border-radius: 0.375rem;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-transform: capitalize;
    border: 1px solid transparent;
}

.role-badge.role-admin {
    background-color: var(--color-error-50);
    color: var(--color-error-700);
    border-color: var(--color-error-200);
}

.role-badge.role-user {
    background-color: var(--color-neutral-100);
    color: var(--color-neutral-700);
    border-color: var(--color-neutral-300);
}

.role-change-form {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.role-select {
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--color-neutral-300);
    border-radius: 0.375rem;
    font-size: var(--font-size-sm);
    background-color: white;
    color: var(--color-neutral-700);
    cursor: pointer;
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.role-select:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Admin User Management Mobile Responsive */
@media (max-width: 768px) {
    .admin-user-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-4);
        padding: var(--space-4);
    }
    
    .user-details {
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
    }
    
    .user-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
        width: 100%;
    }
    
    .user-role {
        width: 100%;
        justify-content: space-between;
    }
    
    .role-change-form {
        width: 100%;
        justify-content: flex-end;
    }
}

/* 404 Error Page */
.error-page {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-12) var(--space-4);
    background: linear-gradient(135deg, var(--color-error-50) 0%, var(--color-neutral-50) 100%);
}

.error-content {
    text-align: center;
    max-width: 600px;
    background: white;
    border-radius: 1rem;
    padding: var(--space-8);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--color-neutral-200);
}

.error-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 6rem;
    height: 6rem;
    margin: 0 auto var(--space-6);
    background: var(--color-error-100);
    border-radius: 50%;
    color: var(--color-error-600);
}

.error-content h1 {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-neutral-900);
    margin: 0 0 var(--space-4) 0;
}

.error-content h2 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-neutral-700);
    margin: 0 0 var(--space-6) 0;
}

.error-content p {
    font-size: var(--font-size-base);
    color: var(--color-neutral-600);
    line-height: 1.6;
    margin: 0 0 var(--space-8) 0;
}

.error-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-8);
}

.debug-info {
    margin-top: var(--space-8);
    padding: var(--space-4);
    background: var(--color-neutral-50);
    border: 1px solid var(--color-neutral-200);
    border-radius: 0.5rem;
    text-align: left;
}

.debug-info h3 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-neutral-700);
    margin: 0 0 var(--space-3) 0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.debug-info pre {
    background: white;
    border: 1px solid var(--color-neutral-300);
    border-radius: 0.375rem;
    padding: var(--space-3);
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
    font-size: var(--font-size-xs);
    color: var(--color-neutral-800);
    overflow-x: auto;
    margin: 0;
    white-space: pre-wrap;
    word-break: break-word;
}

.debug-info ul {
    margin: 0;
    padding-left: var(--space-5);
    font-size: var(--font-size-sm);
    color: var(--color-neutral-600);
}

.debug-info li {
    margin-bottom: var(--space-2);
    line-height: 1.5;
}

.debug-info li:last-child {
    margin-bottom: 0;
}

.debug-info strong {
    color: var(--color-neutral-700);
    font-weight: var(--font-weight-medium);
}

/* 404 Error Page Mobile Responsive */
@media (max-width: 768px) {
    .error-page {
        padding: var(--space-6) var(--space-2);
    }
    
    .error-content {
        padding: var(--space-6);
        width: 100%;
    }
    
    .error-icon {
        width: 4rem;
        height: 4rem;
        margin-bottom: var(--space-4);
    }
    
    .error-content h1 {
        font-size: var(--font-size-3xl);
    }
    
    .error-content h2 {
        font-size: var(--font-size-lg);
    }
    
    .error-actions {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-3);
    }
    
    .error-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .debug-info {
        margin-top: var(--space-6);
        padding: var(--space-3);
    }
    
    .debug-info pre {
        font-size: var(--font-size-xs);
        padding: var(--space-2);
    }
}