/* =============================================================================
   BNI BANKING SYSTEM - STYLESHEET
   Charte graphique: VERT, JAUNE, BLANC
   ============================================================================= */

/* CSS Variables - BNI Brand Colors - PALETTE HARMONIEUSE */
:root {
    /* Verts BNI - Équilibre entre caractère et harmonie */
    --bni-green-primary: #1B5E20;      /* Vert principal avec caractère */
    --bni-green-secondary: #388E3C;    /* Vert secondaire vibrant */
    --bni-green-accent: #66BB6A;       /* Vert accent équilibré */
    --bni-green-light: #C8E6C9;        /* Vert clair apaisant */
    --bni-green-dark: #0D4A0F;         /* Vert foncé pour contrastes */
    
    /* Jaunes BNI - Vibrants et équilibrés */
    --bni-yellow-primary: #F57C00;     /* Jaune principal vibrant */
    --bni-yellow-secondary: #FF9800;   /* Jaune secondaire énergique */
    --bni-yellow-accent: #FFB74D;      /* Jaune accent chaleureux */
    --bni-yellow-light: #FFF3E0;       /* Jaune clair doux */
    --bni-yellow-dark: #E65100;        /* Jaune foncé pour contrastes */
    
    /* Neutres - Palette étendue pour l'harmonie */
    --bni-white: #FFFFFF;
    --bni-white-off: #FAFAFA;          /* Plus doux */
    --bni-white-gray: #F5F5F5;         /* Plus doux */
    
    /* Couleurs d'état - Vibrantes et équilibrées */
    --bni-success: #388E3C;            /* Vert succès avec caractère */
    --bni-warning: #F57C00;            /* Orange attention vibrant */
    --bni-error: #D32F2F;              /* Rouge erreur marqué */
    --bni-info: #1976D2;               /* Bleu information professionnel */
    
    /* Couleurs d'accent neutres */
    --bni-blue-subtle: #E3F2FD;        /* Bleu très doux */
    --bni-purple-subtle: #F3E5F5;      /* Violet très doux */
    --bni-teal-subtle: #E0F2F1;        /* Teal très doux */
    
    /* Grays */
    --bni-gray-50: #FAFAFA;
    --bni-gray-100: #F5F5F5;
    --bni-gray-200: #EEEEEE;
    --bni-gray-300: #E0E0E0;
    --bni-gray-400: #BDBDBD;
    --bni-gray-500: #9E9E9E;
    --bni-gray-600: #757575;
    --bni-gray-700: #616161;
    --bni-gray-800: #424242;
    --bni-gray-900: #212121;
    
    /* Typography */
    --font-primary: 'Inter', 'Segoe UI', sans-serif;
    --font-secondary: 'Poppins', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Shadows - Équilibrées avec caractère */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.20);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--bni-gray-800);
    background: linear-gradient(135deg, var(--bni-white-off) 0%, var(--bni-gray-100) 50%, var(--bni-gray-200) 100%);
    overflow-x: hidden;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--bni-white);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.top-bar {
    background: linear-gradient(135deg, var(--bni-green-primary) 0%, var(--bni-green-dark) 100%);
    color: var(--bni-white);
    padding: 8px 0;
    font-size: 14px;
    font-weight: 400;
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.contact-info {
    display: flex;
    gap: 32px;
    align-items: center;
    flex-wrap: wrap;
}

.contact-info span {
    display: flex;
    align-items: center;
    gap: 8px;
    opacity: 0.9;
    transition: opacity var(--transition-fast);
    white-space: nowrap;
    font-size: 13px;
}

.contact-info span:hover {
    opacity: 1;
}

.social-links {
    display: flex;
    gap: 16px;
    align-items: center;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--bni-white);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-size: 14px;
}

.social-links a:hover {
    background: var(--bni-yellow-primary);
    transform: translateY(-2px);
}

.navbar {
    padding: 16px 0;
    background: var(--bni-white);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 28px;
    font-weight: 800;
    color: var(--bni-green-primary);
    text-decoration: none;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--bni-green-primary) 0%, var(--bni-yellow-primary) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bni-white);
    font-size: 20px;
    font-weight: bold;
    box-shadow: var(--shadow-md);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    align-items: center;
}

.nav-menu a {
    color: var(--bni-gray-600);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    position: relative;
    padding: 8px 0;
    transition: all var(--transition-fast);
}

.nav-menu a:hover {
    color: var(--bni-green-secondary);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background: linear-gradient(90deg, var(--bni-green-secondary), var(--bni-yellow-primary));
    transition: width var(--transition-normal);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--bni-green-secondary) 0%, var(--bni-green-primary) 100%);
    color: var(--bni-white);
    border: none;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--bni-green-primary) 0%, var(--bni-green-dark) 100%);
}

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

.btn-outline:hover {
    background: var(--bni-green-secondary);
    color: var(--bni-white);
}

/* Hero Section */
.hero {
    padding: 140px 0 100px;
    background: linear-gradient(135deg, var(--bni-green-primary) 0%, var(--bni-green-dark) 100%);
    color: var(--bni-white);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 193, 7, 0.1) 0%, transparent 70%);
    animation: float 20s infinite linear;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(180deg, transparent 0%, var(--bni-white) 100%);
}

@keyframes float {
    0% { transform: rotate(0deg) translate(-50px, -50px); }
    100% { transform: rotate(360deg) translate(-50px, -50px); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    font-family: var(--font-secondary);
}

.hero-text h1 span {
    background: linear-gradient(135deg, var(--bni-yellow-primary), var(--bni-yellow-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: 1.25rem;
    line-height: 1.7;
    opacity: 0.9;
    margin-bottom: 32px;
    font-weight: 400;
}

.hero-actions {
    display: flex;
    gap: 20px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.btn-hero-primary {
    background: linear-gradient(135deg, var(--bni-green-primary) 0%, var(--bni-green-secondary) 100%);
    color: var(--bni-white);
    padding: 16px 32px;
    font-size: 16px;
    font-weight: 700;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    border: none;
}

.btn-hero-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    background: linear-gradient(135deg, var(--bni-green-secondary) 0%, var(--bni-green-accent) 100%);
}

.btn-hero-secondary {
    background: transparent;
    color: var(--bni-white);
    border: 2px solid rgba(255, 255, 255, 0.3);
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.btn-hero-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--bni-yellow-primary);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.stat-item {
    text-align: center;
    padding: 16px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    font-family: var(--font-mono);
    color: var(--bni-yellow-primary);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    font-weight: 500;
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.banking-cards {
    position: relative;
    width: 100%;
    max-width: 400px;
}

.banking-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.05));
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    margin-bottom: 20px;
    transform: rotate(-8deg);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.banking-card:nth-child(2) {
    transform: rotate(5deg);
    margin-top: -80px;
    margin-left: 40px;
}

.banking-card:hover {
    transform: rotate(0deg);
    scale: 1.05;
}

.banking-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--bni-yellow-primary) 0%, var(--bni-green-accent) 100%);
    opacity: 0.1;
    border-radius: 20px;
}

.card-chip {
    width: 40px;
    height: 32px;
    background: linear-gradient(135deg, var(--bni-yellow-primary), var(--bni-yellow-secondary));
    border-radius: 6px;
    margin-bottom: 24px;
    position: relative;
    overflow: hidden;
}

.card-chip::before {
    content: '';
    position: absolute;
    top: 4px;
    left: 4px;
    right: 4px;
    bottom: 4px;
    background: linear-gradient(135deg, var(--bni-yellow-dark), var(--bni-yellow-primary));
    border-radius: 3px;
}

.card-number {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 3px;
    margin-bottom: 24px;
    color: var(--bni-white);
}

.card-info {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.card-holder,
.card-expiry {
    display: flex;
    flex-direction: column;
}

.card-label {
    font-size: 0.8rem;
    opacity: 0.7;
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.card-value {
    font-weight: 700;
    font-size: 1rem;
}

/* Quick Actions Section */
.quick-actions {
    padding: 80px 0;
    background: var(--bni-white-off);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--bni-green-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--bni-green-primary);
    margin-bottom: 20px;
    font-family: var(--font-secondary);
}

.section-description {
    font-size: 1.2rem;
    color: var(--bni-gray-500);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

.actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.action-card {
    background: var(--bni-white);
    padding: 32px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.action-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--bni-green-secondary), var(--bni-yellow-primary));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.action-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--bni-green-light);
}

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

.action-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--bni-green-light), var(--bni-green-accent));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 20px;
    position: relative;
}

.action-card:hover .action-icon {
    background: linear-gradient(135deg, var(--bni-green-secondary), var(--bni-green-primary));
    color: var(--bni-white);
}

.action-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--bni-green-primary);
    margin-bottom: 12px;
    font-family: var(--font-secondary);
}

.action-card p {
    color: var(--bni-gray-500);
    line-height: 1.6;
    margin-bottom: 20px;
}

.action-link {
    color: var(--bni-green-secondary);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-normal);
}

.action-link:hover {
    color: var(--bni-green-primary);
    gap: 12px;
}

/* Services Section */
.services {
    padding: 100px 0;
    background: var(--bni-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
    margin-top: 60px;
}

.service-card {
    background: var(--bni-white);
    border: 1px solid var(--bni-gray-200);
    padding: 40px;
    border-radius: 20px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--bni-green-light), transparent);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.service-card:hover::before {
    opacity: 1;
}

.service-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-xl);
    border-color: var(--bni-green-accent);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--bni-green-secondary), var(--bni-green-primary));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bni-white);
    font-size: 36px;
    margin-bottom: 24px;
    position: relative;
    z-index: 2;
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--bni-green-primary);
    margin-bottom: 16px;
    font-family: var(--font-secondary);
    position: relative;
    z-index: 2;
}

.service-card p {
    color: var(--bni-gray-500);
    line-height: 1.7;
    margin-bottom: 24px;
    position: relative;
    z-index: 2;
}

.service-features {
    list-style: none;
    margin-bottom: 24px;
    position: relative;
    z-index: 2;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    color: var(--bni-gray-600);
    font-size: 0.9rem;
}

.service-features li::before {
    content: '✓';
    color: var(--bni-success);
    font-weight: bold;
    flex-shrink: 0;
}

/* CTA Section */
.cta {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--bni-green-primary) 0%, var(--bni-green-dark) 100%);
    color: var(--bni-white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 193, 7, 0.1) 0%, transparent 50%);
    animation: rotate 30s infinite linear;
}

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

.cta-content {
    position: relative;
    z-index: 2;
}

.cta h2 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 20px;
    font-family: var(--font-secondary);
}

.cta p {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background: var(--bni-green-primary);
    color: var(--bni-white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--bni-yellow-primary);
}

.footer-section p,
.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    line-height: 1.8;
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: var(--bni-yellow-primary);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* Chat Widget */
.chat-widget {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
}

.chat-button {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--bni-green-secondary), var(--bni-green-primary));
    border: none;
    border-radius: 50%;
    color: var(--bni-white);
    font-size: 24px;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    animation: pulse 2s infinite;
}

.chat-button:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
}

@keyframes pulse {
    0%, 100% { 
        box-shadow: var(--shadow-lg);
    }
    50% { 
        box-shadow: 0 4px 20px rgba(76, 175, 80, 0.6), 
                   0 0 0 10px rgba(76, 175, 80, 0.1),
                   0 0 0 20px rgba(76, 175, 80, 0.05);
    }
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--bni-green-primary);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .top-bar-content {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .contact-info {
        gap: 16px;
        font-size: 12px;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .contact-info span {
        font-size: 11px;
        white-space: nowrap;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .actions-grid,
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .cta h2 {
        font-size: 2.2rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
}