/* ===== Global Styles ===== */
:root {
    /* Custom Colors - Modern SaaS Palette */
    --primary-color: #4F46E5;
    --primary-dark: #4338CA;
    --secondary-color: #06B6D4;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --dark-color: #0F172A;
    --light-color: #F8FAFC;
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-muted: #64748B;
    --bg-surface: #FFFFFF;
    --bg-base: #F8FAFC;

    /* Bootstrap 5 Custom Properties Override */
    --bs-primary: #4F46E5;
    --bs-primary-rgb: 79, 70, 229;
    --bs-secondary: #06B6D4;
    --bs-secondary-rgb: 6, 182, 212;
    --bs-success: #10b981;
    --bs-success-rgb: 16, 185, 129;
    --bs-danger: #ef4444;
    --bs-danger-rgb: 239, 68, 68;
    --bs-warning: #f59e0b;
    --bs-warning-rgb: 245, 158, 11;

    /* Custom Properties */
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.08);
    --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.1);
    --shadow-lg: 0 12px 24px rgba(15, 23, 42, 0.15);
}

/* Dark Mode Overrides */
[data-theme="dark"] {
    --primary-color: #6366F1;
    --primary-dark: #4F46E5;
    --secondary-color: #22D3EE;
    --dark-color: #F1F5F9;
    /* Text becomes light */
    --light-color: #0F172A;
    /* Background becomes dark */
    --bg-surface: #1E293B;
    --bg-base: #0F172A;
    --border-color: #334155;
    --text-primary: #F1F5F9;
    --text-secondary: #CBD5E1;
    --text-muted: #94A3B8;

    --bs-body-color: #F1F5F9;
    --bs-body-bg: #0F172A;

    /* Dark mode specific shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.5);
}

/* Smooth theme transition */
html {
    transition: background-color 0.3s ease, color 0.3s ease;
}

[data-theme="dark"] body {
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
}

[data-theme="dark"] .card,
[data-theme="dark"] .feature-card,
[data-theme="dark"] .content-page,
[data-theme="dark"] .tool-container,
[data-theme="dark"] .hero-section {
    background-color: var(--bg-surface);
    color: var(--bs-body-color);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .card {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .card:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .text-muted {
    color: #9ca3af !important;
}

/* Form Elements Dark Mode */
[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
    background-color: #374151;
    border-color: #4b5563;
    color: #f3f4f6;
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
    background-color: #374151;
    border-color: var(--primary-color);
    color: #f3f4f6;
    box-shadow: 0 0 0 0.2rem rgba(99, 102, 241, 0.25);
}

[data-theme="dark"] .form-control::placeholder {
    color: #9ca3af;
}

[data-theme="dark"] textarea.form-control {
    background-color: #1f2937;
    border-color: #374151;
}

/* Dropdown Menu Dark Mode */
[data-theme="dark"] .dropdown-menu {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .dropdown-item {
    color: var(--text-secondary);
}

[data-theme="dark"] .dropdown-item:hover,
[data-theme="dark"] .dropdown-item:focus {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
}

/* List and Accordion Dark Mode */
[data-theme="dark"] .list-group-item {
    background-color: var(--bg-surface);
    border-color: var(--border-color);
    color: var(--bs-body-color);
}

[data-theme="dark"] .accordion-button:not(.collapsed) {
    color: white;
    background-color: #374151;
}

[data-theme="dark"] .accordion-button {
    background-color: var(--bg-surface);
    color: var(--bs-body-color);
    border-color: var(--border-color);
}

[data-theme="dark"] .accordion-body {
    background-color: var(--bg-surface);
    color: var(--text-secondary);
}

/* Output Area Dark Mode */
[data-theme="dark"] .output-area {
    background-color: #111827;
    border-color: #374151;
    color: #f3f4f6;
}

/* Tool Header Dark Mode */
[data-theme="dark"] .tool-header {
    background: linear-gradient(135deg, #4338CA 0%, #0891B2 100%) !important;
    border: 1px solid var(--border-color);
}

/* Card Header Dark Mode */
[data-theme="dark"] .card-header {
    background: linear-gradient(135deg, #4338CA 0%, #0891B2 100%) !important;
    border-bottom: 1px solid var(--border-color);
}

/* Button Dark Mode Enhancements */
[data-theme="dark"] .btn-primary {
    background: linear-gradient(135deg, #6366F1 0%, #22D3EE 100%) !important;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

[data-theme="dark"] .btn-primary:hover {
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

[data-theme="dark"] .btn-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%) !important;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

[data-theme="dark"] .btn-success:hover {
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
}

[data-theme="dark"] .btn-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%) !important;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
}

[data-theme="dark"] .btn-warning:hover {
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.5);
}

[data-theme="dark"] .btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%) !important;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
}

[data-theme="dark"] .btn-danger:hover {
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.5);
}

[data-theme="dark"] .btn-outline-primary {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

[data-theme="dark"] .btn-outline-primary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

[data-theme="dark"] .btn:disabled {
    opacity: 0.5;
}

/* Search Input Dark Mode */
[data-theme="dark"] .search-input {
    background-color: var(--bg-surface);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .search-input:focus {
    border-color: var(--primary-color);
    background-color: var(--bg-surface);
}

/* Footer Dark Mode - Keep it consistent */
[data-theme="dark"] .footer {
    background-color: #0a0f1e !important;
    border-top: 1px solid var(--border-color);
}

/* Toast Notifications Dark Mode */
[data-theme="dark"] .toast {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .toast-header {
    background-color: #374151;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .toast-body {
    color: var(--text-secondary) !important;
}

[data-theme="dark"] .btn-close {
    filter: invert(1);
}

/* ===== Scroll To Top Button ===== */
.scroll-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    cursor: pointer;
    display: none;
    /* Hidden by default */
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    z-index: 999;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.scroll-top-btn.visible {
    display: flex;
    opacity: 1;
    transform: translateY(0);
}

.scroll-top-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
    color: white;
}

/* ===== Drag & Drop Zone ===== */
.drop-zone {
    border: 3px dashed #e5e7eb;
    border-radius: var(--border-radius);
    padding: 3rem 2rem;
    text-align: center;
    transition: var(--transition);
    background-color: #f9fafb;
    cursor: pointer;
    position: relative;
}

[data-theme="dark"] .drop-zone {
    background-color: #374151;
    border-color: #4b5563;
}

[data-theme="dark"] .drop-zone:hover,
[data-theme="dark"] .drop-zone.drag-over {
    border-color: var(--primary-color);
    background-color: rgba(99, 102, 241, 0.15);
}

.drop-zone:hover,
.drop-zone.drag-over {
    border-color: var(--primary-color);
    background-color: rgba(99, 102, 241, 0.05);
}

.drop-zone__input {
    display: none;
}

.drop-zone__prompt {
    font-size: 1.1rem;
    color: #6b7280;
    margin-top: 1rem;
}

[data-theme="dark"] .drop-zone__prompt {
    color: #d1d5db;
}


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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-base);
    background-attachment: fixed;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    color: var(--text-primary);
}

main {
    flex: 1;
}

/* ===== Navigation ===== */
.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.navbar-brand {
    font-size: 1.5rem;
    transition: var(--transition);
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 1rem !important;
    border-radius: 8px;
}

.nav-link:hover {
    color: white !important;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.dropdown-menu {
    border: none;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    border-radius: var(--border-radius);
    padding: 0.5rem;
    margin-top: 0.5rem;
}

.dropdown-item {
    border-radius: 8px;
    padding: 0.75rem 1rem;
    transition: var(--transition);
    font-weight: 500;
}

.dropdown-item:hover {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    transform: translateX(5px);
}

/* ===== Cards & Containers ===== */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    background: white;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-radius: var(--border-radius) var(--border-radius) 0 0 !important;
    padding: 1.25rem;
    font-weight: 600;
}

/* ===== Buttons ===== */
.btn {
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

.btn-warning:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
}

.btn-outline-primary {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* ===== Form Elements ===== */
.form-control,
.form-select {
    border-radius: 8px;
    border: 2px solid #e5e7eb;
    padding: 0.75rem 1rem;
    transition: var(--transition);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(99, 102, 241, 0.15);
}

textarea.form-control {
    min-height: 200px;
    font-family: 'Courier New', monospace;
}

/* ===== Tool Specific Styles ===== */
.tool-container {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    margin: 2rem 0;
}

.output-area {
    background: #f9fafb;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    padding: 1rem;
    min-height: 200px;
    font-family: 'Courier New', monospace;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.tool-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
    text-align: center;
}

.tool-header h1 {
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.tool-header p {
    opacity: 0.9;
    margin-bottom: 0;
}

/* ===== Hero Section ===== */
.hero-section {
    background: var(--bg-surface);
    border-radius: var(--border-radius);
    padding: 3rem 2rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    margin: 2rem 0;
}

.hero-section h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.2;
}

.hero-section .subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-weight: 500;
}

.hero-section p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* Search Bar Styles */
.search-container {
    max-width: 600px;
    margin: 0 auto 2rem;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3.5rem;
    border: 2px solid #E2E8F0;
    border-radius: 12px;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--bg-surface);
    color: var(--text-primary);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.search-icon {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1.25rem;
    pointer-events: none;
}

.search-clear {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.5rem;
    display: none;
    transition: var(--transition);
    z-index: 10;
}

.search-clear:hover {
    color: var(--text-primary);
}

.search-clear.visible {
    display: block;
}

/* Autocomplete Suggestions */
.autocomplete-suggestions {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border: 2px solid #E2E8F0;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    max-height: 400px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
}

[data-theme="dark"] .autocomplete-suggestions {
    border-color: var(--border-color);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.autocomplete-suggestions.visible {
    display: block;
}

.autocomplete-item {
    padding: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 1px solid #E2E8F0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

[data-theme="dark"] .autocomplete-item {
    border-bottom-color: var(--border-color);
}

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

.autocomplete-item:hover,
.autocomplete-item.active {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
}

.autocomplete-item-content {
    flex: 1;
}

.autocomplete-item-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
}

.autocomplete-item-header strong {
    color: var(--text-primary);
    font-size: 0.95rem;
}

.autocomplete-item-description {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.4;
}

.autocomplete-item i.bi-arrow-right {
    color: var(--text-muted);
    font-size: 1.25rem;
    transition: var(--transition);
}

.autocomplete-item:hover i.bi-arrow-right,
.autocomplete-item.active i.bi-arrow-right {
    color: var(--primary-color);
    transform: translateX(5px);
}

/* Highlight matching text */
.autocomplete-item mark {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 0.1rem 0.3rem;
    border-radius: 4px;
    font-weight: 600;
}

/* Category badges in autocomplete */
.category-badge-small {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.category-badge-small.developer {
    background: linear-gradient(135deg, #4F46E5 0%, #6366F1 100%);
    color: white;
}

.category-badge-small.media {
    background: linear-gradient(135deg, #8B5CF6 0%, #A78BFA 100%);
    color: white;
}

.category-badge-small.finance {
    background: linear-gradient(135deg, #10b981 0%, #34D399 100%);
    color: white;
}

.category-badge-small.text {
    background: linear-gradient(135deg, #F59E0B 0%, #FBBF24 100%);
    color: white;
}

.category-badge-small.security {
    background: linear-gradient(135deg, #EF4444 0%, #F87171 100%);
    color: white;
}

.category-badge-small.pdf {
    background: linear-gradient(135deg, #6366f1 0%, #818cf8 100%);
    color: white;
}

.no-results {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-secondary);
    display: none;
}

.no-results.visible {
    display: block;
}

.no-results i {
    font-size: 3rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

/* ===== Feature Cards ===== */
.feature-card {
    background: var(--bg-surface);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
    transition: var(--transition);
    height: 100%;
    border: 2px solid transparent;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

.feature-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(79, 70, 229, 0.15);
}

.feature-card i {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.75rem;
    display: block;
}

.feature-card h3 {
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    font-size: 1.125rem;
}

.feature-card p {
    color: var(--text-secondary);
    margin-bottom: 0;
    line-height: 1.5;
    font-size: 0.9rem;
}

/* ===== Footer ===== */
.footer {
    margin-top: auto;
}

.hover-link:hover {
    color: white !important;
    transform: translateX(5px);
    display: inline-block;
    transition: var(--transition);
}

/* ===== Content Pages ===== */
.content-page {
    background: white;
    border-radius: var(--border-radius);
    padding: 3rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    margin: 2rem 0;
}

.content-page h1 {
    color: var(--dark-color);
    font-weight: 700;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 3px solid var(--primary-color);
}

.content-page h2 {
    color: var(--dark-color);
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.content-page h3 {
    color: #4b5563;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.content-page p {
    color: #6b7280;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.content-page ul,
.content-page ol {
    color: #6b7280;
    line-height: 1.8;
    margin-bottom: 1rem;
    padding-left: 2rem;
}

.content-page code {
    background: #f3f4f6;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    color: var(--primary-color);
    font-family: 'Courier New', monospace;
}

.content-page pre {
    background: #1f2937;
    color: #f9fafb;
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1.5rem 0;
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2rem;
    }

    .hero-section p {
        font-size: 1rem;
    }

    .tool-container {
        padding: 1rem;
    }

    .content-page {
        padding: 1.5rem;
    }

    .navbar-brand {
        font-size: 1.25rem;
    }
}

/* ===== Utility Classes ===== */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.section-title {
    color: var(--text-primary) !important;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-description {
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 800px;
    margin: 0 auto 3rem;
    line-height: 1.6;
}

.shadow-custom {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.border-gradient {
    border: 2px solid;
    border-image: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%) 1;
}

/* ===== Bootstrap 5 Toast Notifications ===== */
.toast-container {
    z-index: 9999;
}

.toast {
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    border: none;
}

.toast-header {
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    font-weight: 600;
}

.toast-header .btn-close {
    filter: brightness(0) invert(1);
}

.toast-body {
    padding: 1rem;
    font-size: 0.95rem;
}

/* Toast Variants */
.toast.bg-success .toast-header {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.toast.bg-danger .toast-header {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

.toast.bg-warning .toast-header {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.toast.bg-info .toast-header {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

/* ===== Bootstrap 5 Badges ===== */
.badge {
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.3px;
}

.badge.bg-primary {
    background: var(--gradient-primary) !important;
}

.badge.bg-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%) !important;
}

.badge.bg-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%) !important;
}

.badge.bg-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%) !important;
    color: white !important;
}

.badge.bg-info {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%) !important;
}

/* ===== Bootstrap 5 Progress Bars ===== */
.progress {
    height: 1.5rem;
    border-radius: 8px;
    background-color: #e5e7eb;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.progress-bar {
    background: var(--gradient-primary);
    border-radius: 8px;
    transition: width 0.6s ease;
    font-weight: 600;
    font-size: 0.85rem;
}

.progress-bar.bg-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.progress-bar.bg-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

.progress-bar.bg-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.progress-bar.bg-info {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

/* Animated Progress Bar */
.progress-bar-animated {
    animation: progress-bar-stripes 1s linear infinite;
}

@keyframes progress-bar-stripes {
    0% {
        background-position: 1.5rem 0;
    }

    100% {
        background-position: 0 0;
    }
}

/* ===== Bootstrap 5 Spinners ===== */
.spinner-border,
.spinner-grow {
    color: var(--primary-color);
}

.spinner-border.text-primary,
.spinner-grow.text-primary {
    color: var(--primary-color) !important;
}

/* ===== Bootstrap 5 Alerts ===== */
.alert {
    border-radius: var(--border-radius);
    border: none;
    box-shadow: var(--shadow-sm);
    padding: 1rem 1.25rem;
}

.alert-primary {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    color: var(--primary-dark);
    border-left: 4px solid var(--primary-color);
}

.alert-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(5, 150, 105, 0.1) 100%);
    color: #065f46;
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(220, 38, 38, 0.1) 100%);
    color: #991b1b;
    border-left: 4px solid var(--danger-color);
}

.alert-warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(217, 119, 6, 0.1) 100%);
    color: #92400e;
    border-left: 4px solid var(--warning-color);
}

.alert-info {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(37, 99, 235, 0.1) 100%);
    color: #1e40af;
    border-left: 4px solid #3b82f6;
}

/* ===== Bootstrap 5 Floating Labels ===== */
.form-floating>label {
    color: #6b7280;
    font-weight: 500;
}

.form-floating>.form-control:focus~label,
.form-floating>.form-control:not(:placeholder-shown)~label,
.form-floating>.form-select~label {
    color: var(--primary-color);
    font-weight: 600;
}

.form-floating>.form-control:focus,
.form-floating>.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(99, 102, 241, 0.15);
}

/* ===== Bootstrap 5 Input Groups ===== */
.input-group-text {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border: 2px solid #e5e7eb;
    color: var(--primary-color);
    font-weight: 600;
    border-radius: 8px;
}

.input-group>.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(99, 102, 241, 0.15);
}

/* ===== Bootstrap 5 List Groups ===== */
.list-group-item {
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    transition: var(--transition);
}

.list-group-item:hover {
    background-color: #f9fafb;
    transform: translateX(5px);
    box-shadow: var(--shadow-sm);
}

.list-group-item.active {
    background: var(--gradient-primary);
    border-color: var(--primary-color);
}

/* ===== Bootstrap 5 Accordion ===== */
.accordion-item {
    border: none;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    box-shadow: var(--shadow-sm);
}

.accordion-button {
    background: white;
    color: var(--dark-color);
    font-weight: 600;
    border-radius: var(--border-radius);
    padding: 1.25rem;
}

.accordion-button:not(.collapsed) {
    background: var(--gradient-primary);
    color: white;
    box-shadow: none;
}

.accordion-button:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(99, 102, 241, 0.15);
}

.accordion-button::after {
    filter: brightness(0) saturate(100%);
}

.accordion-button:not(.collapsed)::after {
    filter: brightness(0) invert(1);
}

.accordion-body {
    padding: 1.5rem;
}

/* ===== Bootstrap 5 Offcanvas ===== */
.offcanvas {
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.offcanvas-header {
    background: var(--gradient-primary);
    color: white;
    padding: 1.5rem;
}

.offcanvas-header .btn-close {
    filter: brightness(0) invert(1);
}

.offcanvas-body {
    padding: 1.5rem;
}

.offcanvas .nav-link {
    color: var(--dark-color) !important;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    transition: var(--transition);
}

.offcanvas .nav-link:hover {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    color: var(--primary-color) !important;
}

/* ===== Bootstrap 5 Tooltips & Popovers ===== */
.tooltip-inner {
    background: var(--dark-color);
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
}

.popover {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

.popover-header {
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    font-weight: 600;
}

/* ===== Bootstrap 5 Modal Enhancements ===== */
.modal-content {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

.modal-header {
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    padding: 1.5rem;
}

.modal-header .btn-close {
    filter: brightness(0) invert(1);
}

.modal-body {
    padding: 2rem;
}

.modal-footer {
    border-top: 1px solid #e5e7eb;
    padding: 1.5rem;
}

/* ===== Bootstrap 5 Button Toolbar ===== */
.btn-toolbar {
    gap: 0.5rem;
}

.btn-group .btn {
    border-radius: 0;
}

.btn-group .btn:first-child {
    border-radius: 8px 0 0 8px;
}

.btn-group .btn:last-child {
    border-radius: 0 8px 8px 0;
}

/* ===== Bootstrap 5 Breadcrumb ===== */
.breadcrumb {
    background: white;
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.breadcrumb-item+.breadcrumb-item::before {
    color: #9ca3af;
}

.breadcrumb-item.active {
    color: var(--primary-color);
    font-weight: 600;
}

/* ===== Bootstrap 5 Pagination ===== */
.pagination {
    gap: 0.5rem;
}

.page-link {
    border: none;
    border-radius: 8px;
    color: var(--primary-color);
    font-weight: 600;
    padding: 0.5rem 1rem;
    transition: var(--transition);
}

.page-link:hover {
    background: var(--gradient-primary);
    color: white;
    transform: translateY(-2px);
}

.page-item.active .page-link {
    background: var(--gradient-primary);
    border: none;
}

/* ===== Enhanced Utility Classes ===== */
.shadow-custom-sm {
    box-shadow: var(--shadow-sm) !important;
}

.shadow-custom-md {
    box-shadow: var(--shadow-md) !important;
}

.shadow-custom-lg {
    box-shadow: var(--shadow-lg) !important;
}

.rounded-custom {
    border-radius: var(--border-radius) !important;
}

.bg-gradient-primary {
    background: var(--gradient-primary) !important;
}

.bg-gradient-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%) !important;
}

.bg-gradient-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%) !important;
}

.bg-gradient-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%) !important;
}

.bg-gradient-info {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%) !important;
}

/* ===== Range Input Styling ===== */
.form-range {
    height: 0.5rem;
}

.form-range::-webkit-slider-thumb {
    background: var(--gradient-primary);
    border: none;
    width: 1.25rem;
    height: 1.25rem;
}

.form-range::-moz-range-thumb {
    background: var(--gradient-primary);
    border: none;
    width: 1.25rem;
    height: 1.25rem;
}

.form-range:focus::-webkit-slider-thumb {
    box-shadow: 0 0 0 0.2rem rgba(99, 102, 241, 0.25);
}

.form-range:focus::-moz-range-thumb {
    box-shadow: 0 0 0 0.2rem rgba(99, 102, 241, 0.25);
}

/* ===== Form Switch Enhancements ===== */
.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.form-switch .form-check-input:checked {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='%23fff'/%3e%3c/svg%3e");
}

.form-check-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(79, 70, 229, 0.15);
}

/* ===== Category Filters ===== */
.category-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    margin-bottom: 3rem;
}

.category-btn {
    padding: 0.625rem 1.25rem;
    border: 2px solid #E2E8F0;
    background: var(--bg-surface);
    color: var(--text-secondary);
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
}

.category-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(79, 70, 229, 0.05);
}

.category-btn.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
}

/* ===== Category Badges ===== */
.category-badge {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    background: rgba(79, 70, 229, 0.1);
    color: var(--primary-color);
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 1rem;
}

.category-badge.developer {
    background: rgba(79, 70, 229, 0.1);
    color: #4F46E5;
}

.category-badge.media {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
}

.category-badge.finance {
    background: rgba(245, 158, 11, 0.1);
    color: #D97706;
}

.category-badge.text {
    background: rgba(6, 182, 212, 0.1);
    color: #0891B2;
}

.category-badge.security {
    background: rgba(239, 68, 68, 0.1);
    color: #DC2626;
}

.category-badge.pdf {
    background: rgba(99, 102, 241, 0.1);
    color: #6366f1;
}

/* ===== Content Sections ===== */
.content-section {
    background: var(--bg-surface);
    border-radius: var(--border-radius);
    padding: 3rem 2rem;
    box-shadow: var(--shadow-sm);
    margin: 3rem 0;
}

.content-section h2 {
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.feature-item {
    text-align: center;
    padding: 1.5rem;
}

.feature-item i {
    font-size: 2.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    display: block;
}

.feature-item h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.feature-item p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* ===== FAQ Section ===== */
.faq-section {
    background: var(--bg-surface);
    border-radius: var(--border-radius);
    padding: 3rem 2rem;
    box-shadow: var(--shadow-sm);
    margin: 3rem 0;
}

.faq-section h2 {
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
}

.faq-item {
    margin-bottom: 1rem;
}

.faq-question {
    background: var(--bg-base);
    border: 2px solid #E2E8F0;
    border-radius: 8px;
    padding: 1.25rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question:hover {
    border-color: var(--primary-color);
    background: rgba(79, 70, 229, 0.02);
}

.faq-question h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    flex: 1;
}

.faq-question i {
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.faq-question.active i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 1.25rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-answer.active {
    padding: 1.25rem;
    max-height: 500px;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* ===== PDF Tools Styles ===== */
.pdf-list,
.range-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.pdf-item,
.range-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-surface);
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    transition: var(--transition);
    cursor: move;
}

[data-theme="dark"] .pdf-item,
[data-theme="dark"] .range-item {
    background: #374151;
    border-color: #4b5563;
}

.pdf-item:hover,
.range-item:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.15);
}

.pdf-item.dragging,
.range-item.dragging {
    opacity: 0.5;
    transform: scale(0.98);
}

.pdf-item-handle,
.range-item-handle {
    color: var(--text-muted);
    font-size: 1.25rem;
    cursor: grab;
}

.pdf-item-handle:active,
.range-item-handle:active {
    cursor: grabbing;
}

.pdf-item-info,
.range-item-info {
    flex: 1;
    display: flex;
    align-items: center;
}

.drop-zone--over {
    border-color: var(--primary-color);
    background-color: rgba(79, 70, 229, 0.1);
}

/* ===== Responsive Adjustments ===== */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 1.875rem;
    }

    .hero-section .subtitle {
        font-size: 1rem;
    }

    .search-container {
        margin-bottom: 1.5rem;
    }

    .category-filters {
        gap: 0.5rem;
    }

    .category-btn {
        font-size: 0.8125rem;
        padding: 0.5rem 1rem;
    }

    .feature-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .content-section {
        padding: 2rem 1.5rem;
    }
}

/* ===== PDF Tools Specific Styles ===== */

/* PDF Preview Container */
.pdf-preview-container {
    max-height: 500px;
    overflow-y: auto;
    padding: 0.5rem;
}

.preview-item {
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    background: var(--bg-base);
    border-radius: 8px;
    border: 1px solid #e5e7eb;
    transition: var(--transition);
}

[data-theme="dark"] .preview-item {
    background: #374151;
    border-color: #4b5563;
}

.preview-item:hover {
    transform: translateX(5px);
    border-color: var(--primary-color);
}

.preview-item i {
    font-size: 1.2rem;
    margin-right: 0.5rem;
}

.preview-item strong {
    color: var(--text-primary);
    font-size: 0.9rem;
}

.preview-item small {
    color: var(--text-muted);
}

/* Fix tab text visibility - ensure active tabs have proper contrast */
.card-header-tabs .nav-link {
    color: rgba(255, 255, 255, 0.7) !important;
    font-weight: 500;
    border: none;
    background: transparent;
}

.card-header-tabs .nav-link:hover {
    color: rgba(255, 255, 255, 0.9) !important;
    background: rgba(255, 255, 255, 0.1);
}

.card-header-tabs .nav-link.active {
    color: #ffffff !important;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    font-weight: 600;
}

/* Nav pills styling for sub-tabs */
.nav-pills .nav-link {
    color: var(--text-primary);
    background: transparent;
    border: 1px solid #e5e7eb;
    margin-right: 0.5rem;
}

[data-theme="dark"] .nav-pills .nav-link {
    border-color: #4b5563;
    color: var(--text-secondary);
}

.nav-pills .nav-link:hover {
    background: rgba(79, 70, 229, 0.1);
    border-color: var(--primary-color);
}

.nav-pills .nav-link.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%) !important;
    color: #ffffff !important;
    border-color: transparent !important;
    font-weight: 600;
}

/* PDF item and range item styles */
.pdf-item,
.range-item {
    display: flex;
    align-items: center;
    padding: 1rem;
    margin-bottom: 0.75rem;
    background: var(--bg-base);
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    transition: var(--transition);
}

[data-theme="dark"] .pdf-item,
[data-theme="dark"] .range-item {
    background: #374151;
    border-color: #4b5563;
}

.pdf-item:hover,
.range-item:hover {
    border-color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.1);
}

.pdf-item.dragging,
.range-item.dragging {
    opacity: 0.5;
}

.pdf-item-handle,
.range-item-handle {
    cursor: grab;
    color: var(--text-muted);
    margin-right: 1rem;
    font-size: 1.2rem;
}

.pdf-item-info,
.range-item-info {
    flex: 1;
}

.range-list {
    min-height: 50px;
}