/*
 * ReconversionAI - Main CSS Framework
 * A lightweight CSS framework with Bootstrap-compatible classes
 */

/* ==========================================================================
   CSS Variables (Design Tokens)
   ========================================================================== */
:root {
    /* Colors - Primary */
    --color-primary: #0C3AA2;
    --color-primary-dark: #071777;
    --color-primary-light: #2DA9DC;

    /* Colors - Status */
    --color-success: #28a745;
    --color-danger: #dc3545;
    --color-warning: #ffc107;
    --color-info: #17a2b8;

    /* Colors - Neutral */
    --color-white: #ffffff;
    --color-light: #f8f9fa;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    --color-dark: #212529;

    /* Typography */
    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-heading: 'Playfair Display', Georgia, serif;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 1rem;
    --spacing-4: 1.5rem;
    --spacing-5: 3rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 50%;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family-base);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-light);
    margin: 0;
    padding: 0;
}

h1, h2, h3, h4, h5, h6 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-gray-900);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

.h1 { font-size: 2.5rem; }
.h2 { font-size: 2rem; }
.h3 { font-size: 1.75rem; }
.h4 { font-size: 1.5rem; }
.h5 { font-size: 1.25rem; }
.h6 { font-size: 1rem; }

p {
    margin-top: 0;
    margin-bottom: 1rem;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* ==========================================================================
   Container
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.container-fluid {
    width: 100%;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

/* ==========================================================================
   Grid System
   ========================================================================== */
.row {
    display: flex;
    flex-wrap: wrap;
    margin-left: -0.75rem;
    margin-right: -0.75rem;
}

.g-4 {
    --gutter-x: 1.5rem;
    --gutter-y: 1.5rem;
    margin-left: calc(var(--gutter-x) * -0.5);
    margin-right: calc(var(--gutter-x) * -0.5);
}

.g-4 > * {
    padding-left: calc(var(--gutter-x) * 0.5);
    padding-right: calc(var(--gutter-x) * 0.5);
    margin-bottom: var(--gutter-y);
}

[class*="col-"] {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
}

.col-12 { width: 100%; }
.col-6 { width: 50%; }
.col-4 { width: 33.333333%; }
.col-3 { width: 25%; }

@media (min-width: 768px) {
    .col-md-4 { width: 33.333333%; }
    .col-md-6 { width: 50%; }
    .col-md-12 { width: 100%; }
}

@media (max-width: 767px) {
    .col-md-4 { width: 100%; }
    .col-md-6 { width: 100%; }
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-gray-900);
}

.card-text {
    color: var(--color-gray-600);
    margin-bottom: 1rem;
}

.card.h-100 {
    height: 100%;
}

.card.border-0 {
    border: none;
}

.card.shadow-sm {
    box-shadow: var(--shadow-md);
}

/* Card Hover Effect */
.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn:hover {
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    border-color: transparent;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(12, 58, 162, 0.4);
    transform: translateY(-2px);
}

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

.btn-success:hover {
    background: #218838;
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.4);
    transform: translateY(-2px);
}

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

.btn-info:hover {
    background: #138496;
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(23, 162, 184, 0.4);
    transform: translateY(-2px);
}

.btn-outline-secondary {
    background: transparent;
    color: var(--color-gray-600);
    border-color: var(--color-gray-300);
}

.btn-outline-secondary:hover {
    background: var(--color-gray-100);
    color: var(--color-gray-800);
    border-color: var(--color-gray-400);
}

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

.text-white {
    color: var(--color-white) !important;
}

/* ==========================================================================
   Badges
   ========================================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
    border-radius: var(--radius-sm);
}

.bg-primary { background-color: var(--color-primary) !important; color: white; }
.bg-success { background-color: var(--color-success) !important; color: white; }
.bg-danger { background-color: var(--color-danger) !important; color: white; }
.bg-warning { background-color: var(--color-warning) !important; color: #212529; }
.bg-info { background-color: var(--color-info) !important; color: white; }
.bg-secondary { background-color: var(--color-gray-500) !important; color: white; }

.bg-opacity-10 {
    --bg-opacity: 0.1;
}

.bg-primary.bg-opacity-10 { background-color: rgba(12, 58, 162, 0.1) !important; }
.bg-success.bg-opacity-10 { background-color: rgba(40, 167, 69, 0.1) !important; }
.bg-info.bg-opacity-10 { background-color: rgba(23, 162, 184, 0.1) !important; }

/* ==========================================================================
   List Groups
   ========================================================================== */
.list-group {
    display: flex;
    flex-direction: column;
    padding-left: 0;
    margin-bottom: 0;
}

.list-group-flush {
    border-radius: 0;
}

.list-group-item {
    position: relative;
    display: flex;
    padding: 1rem 1.25rem;
    background-color: var(--color-white);
    border: none;
    border-bottom: 1px solid var(--color-gray-200);
}

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

.list-group-item-action {
    color: var(--color-gray-800);
    text-decoration: none;
    transition: background-color var(--transition-fast);
}

.list-group-item-action:hover {
    background-color: var(--color-gray-100);
    text-decoration: none;
}

/* ==========================================================================
   Breadcrumb
   ========================================================================== */
.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    padding: 0;
    margin-bottom: 1rem;
    list-style: none;
    background: transparent;
}

.breadcrumb-item {
    font-size: 0.875rem;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "/";
    padding: 0 0.5rem;
    color: var(--color-gray-400);
}

.breadcrumb-item.active {
    color: var(--color-gray-500);
}

.breadcrumb-item a {
    color: var(--color-primary);
}

/* ==========================================================================
   Alerts
   ========================================================================== */
.alert {
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border-left: 4px solid var(--color-success);
}

.alert-danger, .alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border-left: 4px solid var(--color-danger);
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border-left: 4px solid var(--color-warning);
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border-left: 4px solid var(--color-info);
}

/* ==========================================================================
   Forms
   ========================================================================== */
.form-control {
    display: block;
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    border-color: var(--color-primary-light);
    outline: 0;
    box-shadow: 0 0 0 3px rgba(45, 169, 220, 0.15);
}

.form-label {
    display: inline-block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-gray-700);
}

.form-select {
    display: block;
    width: 100%;
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    appearance: none;
}

.form-select:focus {
    border-color: var(--color-primary-light);
    outline: 0;
    box-shadow: 0 0 0 3px rgba(45, 169, 220, 0.15);
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

/* Display */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.d-inline-flex { display: inline-flex !important; }

/* Flexbox */
.flex-column { flex-direction: column !important; }
.flex-wrap { flex-wrap: wrap !important; }
.justify-content-between { justify-content: space-between !important; }
.justify-content-center { justify-content: center !important; }
.justify-content-end { justify-content: flex-end !important; }
.align-items-center { align-items: center !important; }
.align-items-start { align-items: flex-start !important; }

/* Text */
.text-center { text-align: center !important; }
.text-start { text-align: left !important; }
.text-end { text-align: right !important; }
.text-muted { color: var(--color-gray-500) !important; }
.text-primary { color: var(--color-primary) !important; }
.text-success { color: var(--color-success) !important; }
.text-danger { color: var(--color-danger) !important; }
.text-warning { color: var(--color-warning) !important; }
.text-info { color: var(--color-info) !important; }

/* Spacing - Margin */
.m-0 { margin: 0 !important; }
.m-1 { margin: 0.25rem !important; }
.m-2 { margin: 0.5rem !important; }
.m-3 { margin: 1rem !important; }
.m-4 { margin: 1.5rem !important; }
.m-5 { margin: 3rem !important; }

.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: 0.25rem !important; }
.mt-2 { margin-top: 0.5rem !important; }
.mt-3 { margin-top: 1rem !important; }
.mt-4 { margin-top: 1.5rem !important; }
.mt-5 { margin-top: 3rem !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: 0.25rem !important; }
.mb-2 { margin-bottom: 0.5rem !important; }
.mb-3 { margin-bottom: 1rem !important; }
.mb-4 { margin-bottom: 1.5rem !important; }
.mb-5 { margin-bottom: 3rem !important; }

.ms-1 { margin-left: 0.25rem !important; }
.ms-2 { margin-left: 0.5rem !important; }
.ms-3 { margin-left: 1rem !important; }
.me-1 { margin-right: 0.25rem !important; }
.me-2 { margin-right: 0.5rem !important; }
.me-3 { margin-right: 1rem !important; }

/* Spacing - Padding */
.p-0 { padding: 0 !important; }
.p-1 { padding: 0.25rem !important; }
.p-2 { padding: 0.5rem !important; }
.p-3 { padding: 1rem !important; }
.p-4 { padding: 1.5rem !important; }
.p-5 { padding: 3rem !important; }

.py-1 { padding-top: 0.25rem !important; padding-bottom: 0.25rem !important; }
.py-2 { padding-top: 0.5rem !important; padding-bottom: 0.5rem !important; }
.py-3 { padding-top: 1rem !important; padding-bottom: 1rem !important; }
.py-4 { padding-top: 1.5rem !important; padding-bottom: 1.5rem !important; }
.py-5 { padding-top: 3rem !important; padding-bottom: 3rem !important; }

.px-1 { padding-left: 0.25rem !important; padding-right: 0.25rem !important; }
.px-2 { padding-left: 0.5rem !important; padding-right: 0.5rem !important; }
.px-3 { padding-left: 1rem !important; padding-right: 1rem !important; }
.px-4 { padding-left: 1.5rem !important; padding-right: 1.5rem !important; }

/* Border */
.border { border: 1px solid var(--color-gray-200) !important; }
.border-0 { border: 0 !important; }
.rounded { border-radius: var(--radius-md) !important; }
.rounded-circle { border-radius: var(--radius-full) !important; }
.rounded-lg { border-radius: var(--radius-lg) !important; }

/* Shadow */
.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }

/* Width & Height */
.w-100 { width: 100% !important; }
.h-100 { height: 100% !important; }

/* ==========================================================================
   Navbar (Basic)
   ========================================================================== */
.navbar {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
}

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

.brand-reconversion {
    color: var(--color-primary);
}

.brand-ai {
    color: var(--color-primary-light);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    color: var(--color-white);
    padding: 3rem 0 1.5rem;
    margin-top: 4rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-description {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

.footer-heading {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #ffffff;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.footer-social {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--color-white);
    transition: background var(--transition-fast);
}

.footer-social a:hover {
    background: rgba(255, 255, 255, 0.2);
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

/* ==========================================================================
   Bootstrap Icons Support
   ========================================================================== */
[class^="bi-"]::before,
[class*=" bi-"]::before {
    display: inline-block;
    font-family: "bootstrap-icons";
    font-style: normal;
    font-weight: normal;
    line-height: 1;
    vertical-align: -0.125em;
}

/* ==========================================================================
   Responsive Utilities
   ========================================================================== */
@media (max-width: 767px) {
    h1, .h1 { font-size: 2rem; }
    h2, .h2 { font-size: 1.75rem; }
    h3, .h3 { font-size: 1.5rem; }

    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

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

/* ==========================================================================
   Print Styles
   ========================================================================== */
@media print {
    .navbar, .footer, .btn {
        display: none !important;
    }

    body {
        background: white;
    }
}