/* ===== VARIABLES CSS ===== */
:root {
    --primary-color: #0d6efd;
    --primary-dark: #0056b3;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --white: #ffffff;
    
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --border-radius: 10px;
    --box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --box-shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    
    --transition: all 0.3s ease;
}

/* ===== GLOBAL STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #fafbfc;
}

.main-content {
    margin-top: 76px; /* Height of fixed navbar */
    min-height: calc(100vh - 76px);
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.display-1, .display-2, .display-3, .display-4, .display-5 {
    font-weight: 700;
}

/* ===== BUTTONS ===== */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
    border: none;
    padding: 0.5rem 1.5rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

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

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #004085 100%);
    color: var(--white);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #e0a800 100%);
    color: var(--dark-color);
}

.btn-warning:hover {
    background: linear-gradient(135deg, #e0a800 0%, #cc9a00 100%);
    color: var(--dark-color);
}

.btn-lg {
    padding: 0.75rem 2rem;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 0.25rem 0.75rem;
    font-size: 0.875rem;
}

/* ===== CARDS ===== */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--box-shadow-lg);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border: none;
    color: var(--white);
    font-weight: 600;
}

.service-card {
    height: 100%;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.1);
}

/* ===== FORMS ===== */
.form-control {
    border-radius: var(--border-radius);
    border: 2px solid #e9ecef;
    padding: 0.75rem 1rem;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.form-control-lg {
    padding: 1rem 1.25rem;
    font-size: 1.1rem;
}

.form-label {
    font-weight: 500;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* ===== NAVIGATION ===== */
.navbar {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-link {
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--warning-color) !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: var(--warning-color);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
    left: 0;
}

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

.dropdown-item {
    transition: var(--transition);
}

.dropdown-item:hover {
    background-color: var(--light-color);
    color: var(--primary-color);
}

/* ===== HERO SECTION ===== */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 100" fill="rgba(255,255,255,0.1)"><polygon points="1000,100 1000,0 0,100"/></svg>');
    background-size: cover;
    background-position: bottom;
}

.hero-section .container {
    position: relative;
    z-index: 1;
}

/* ===== SERVICE ICONS ===== */
.service-icon, .feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.service-icon:hover, .feature-icon:hover {
    transform: scale(1.1);
}

/* ===== ALERTS ===== */
.alert {
    border: none;
    border-radius: var(--border-radius);
    font-weight: 500;
}

.alert-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #146c43 100%);
    color: var(--white);
}

.alert-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #b02a37 100%);
    color: var(--white);
}

.alert-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #e0a800 100%);
    color: var(--dark-color);
}

.alert-info {
    background: linear-gradient(135deg, var(--info-color) 0%, #0aa2c0 100%);
    color: var(--white);
}

/* ===== BADGES ===== */
.badge {
    font-weight: 500;
    padding: 0.5em 0.75em;
    border-radius: 50px;
}

/* ===== TABLES ===== */
.table {
    border-radius: var(--border-radius);
    overflow: hidden;
}

.table th {
    background-color: var(--light-color);
    border-top: none;
    font-weight: 600;
    color: var(--dark-color);
}

.table-hover tbody tr:hover {
    background-color: rgba(13, 110, 253, 0.05);
}

/* ===== FOOTER ===== */
footer {
    background: linear-gradient(135deg, var(--dark-color) 0%, #1a1e21 100%) !important;
}

footer * {
    color: white !important;
}

footer .text-muted {
    color: white !important;
}

footer a {
    transition: var(--transition);
    color: white !important;
}

footer a:hover {
    color: var(--primary-color) !important;
    transform: translateY(-2px);
}

footer h5, footer h6 {
    color: white !important;
}

footer p {
    color: white !important;
}

footer li {
    color: white !important;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    transition: var(--transition);
    color: white !important;
}

.social-links a:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
    color: white !important;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.6s ease-out;
}

.animate-fade-in-right {
    animation: fadeInRight 0.6s ease-out;
}

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

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

.shadow-custom {
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

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

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .main-content {
        margin-top: 70px;
    }
    
    .hero-section {
        padding: 3rem 0;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .btn-lg {
        padding: 0.5rem 1.5rem;
        font-size: 1rem;
    }
    
    .service-card {
        margin-bottom: 1.5rem;
    }
}

@media (max-width: 576px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .d-flex.gap-3 {
        flex-direction: column;
    }
}

/* ===== LOADING SPINNER ===== */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== CUSTOM SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-color);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* ===== CREDIT IMPOTS SPECIFIC STYLES ===== */
.credit-impots-hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    position: relative;
    overflow: hidden;
}

.credit-impots-hero .hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
}

.stat-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.results-card {
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.result-value {
    margin-bottom: 0.5rem;
}

.result-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* ===== ADVANTAGE CARDS ===== */
.advantage-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    position: relative;
}

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

.advantage-icon {
    margin-bottom: 1.5rem;
    position: relative;
}

.advantage-title {
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.advantage-description {
    color: var(--secondary-color);
    line-height: 1.6;
}

/* ===== SERVICE CARD PREMIUM ===== */
.service-card-premium {
    background: white;
    border-radius: 20px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    overflow: hidden;
    border: 1px solid #f0f0f0;
}

.service-card-premium:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-lg);
}

.service-card-header {
    padding: 2rem 2rem 1rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.service-card-body {
    padding: 1.5rem 2rem;
}

.service-card-footer {
    padding: 1.5rem 2rem 2rem;
}

.service-icon-wrapper {
    position: relative;
    display: inline-block;
}

.service-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin: 0 auto;
    box-shadow: 0 5px 15px rgba(13, 110, 253, 0.3);
}

.service-title {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

/* ===== HERO STATS ===== */
.hero-stats .stat-item {
    text-align: center;
}

.hero-stats h3 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.hero-stats p {
    margin: 0;
    opacity: 0.9;
}

/* ===== SERVICES CTA ===== */
.services-cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

/* ===== RESPONSIVE ENHANCEMENTS ===== */
@media (max-width: 768px) {
    .hero-stats .stat-item {
        margin-bottom: 1rem;
    }
    
    .advantage-card {
        margin-bottom: 1.5rem;
    }
    
    .service-card-premium {
        margin-bottom: 1.5rem;
    }
    
    .results-card .row {
        flex-direction: column;
        gap: 1rem;
    }
    
    .results-card .col-md-2 i {
        transform: rotate(90deg);
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    .navbar,
    .btn,
    footer {
        display: none !important;
    }
    
    .main-content {
        margin-top: 0;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}