/* ===== Variables CSS ===== */
:root {
    --primary-blue: #0047FF;
    --primary-dark: #0035CC;
    --text-dark: #1a1a2e;
    --text-gray: #666;
    --text-light: #fff;
    --bg-light: #f8f9fa;
    --bg-white: #fff;
    --border-color: #e0e0e0;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --radius: 8px;
    --radius-lg: 12px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* ===== Container ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Header ===== */
.header {
    background-color: var(--bg-white);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

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

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

.logo-icon {
    width: 45px;
    height: 45px;
    background-color: var(--primary-blue);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-weight: bold;
    font-size: 1.5rem;
}

.logo-text h1 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
}

.logo-text span {
    font-size: 0.75rem;
    color: var(--text-gray);
}

.nav ul {
    display: flex;
    gap: 30px;
}

.nav a {
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
}

.nav a:hover,
.nav a.active {
    color: var(--primary-blue);
}

/* Mobile menu */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* ===== Hero Section ===== */
.hero {
    background-color: var(--primary-blue);
    color: var(--text-light);
    padding: 80px 0;
}

.hero-content {
    max-width: 700px;
}

.hero h2 {
    font-size: 2.75rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
    border: 2px solid transparent;
    text-align: center;
}

.btn-white {
    background-color: var(--text-light);
    color: var(--primary-blue);
}

.btn-white:hover {
    background-color: transparent;
    border-color: var(--text-light);
    color: var(--text-light);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--text-light);
    color: var(--text-light);
}

.btn-outline:hover {
    background-color: var(--text-light);
    color: var(--primary-blue);
}

.btn-primary {
    background-color: var(--primary-blue);
    color: var(--text-light);
    border-color: var(--primary-blue);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
}

/* ===== Sections ===== */
.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 50px;
    color: var(--text-dark);
}

.section-bg {
    background-color: var(--bg-light);
}

/* ===== Formation Cards ===== */
.formations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.formation-card {
    background-color: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--border-color);
}

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

.formation-card-icon {
    width: 60px;
    height: 60px;
    background-color: var(--primary-blue);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.formation-card h3 {
    font-size: 1.35rem;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.formation-card p {
    color: var(--text-gray);
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.formation-card .duration {
    font-size: 0.85rem;
    color: var(--primary-blue);
    font-weight: 600;
    margin-bottom: 15px;
}

.formation-card .btn {
    width: 100%;
}

/* ===== Formation Detail Page ===== */
.formation-hero {
    background-color: var(--primary-blue);
    color: var(--text-light);
    padding: 60px 0;
}

.formation-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.formation-hero .meta {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.formation-hero .meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
}

.formation-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    padding: 60px 0;
}

.formation-main h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-dark);
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-blue);
}

.formation-main h3 {
    font-size: 1.2rem;
    margin: 25px 0 15px;
    color: var(--text-dark);
}

.formation-main ul {
    margin-left: 20px;
    margin-bottom: 20px;
}

.formation-main li {
    margin-bottom: 10px;
    position: relative;
    padding-left: 20px;
}

.formation-main li::before {
    content: "✓";
    color: var(--primary-blue);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.formation-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.sidebar-card {
    background-color: var(--bg-light);
    border-radius: var(--radius-lg);
    padding: 30px;
    border: 1px solid var(--border-color);
}

.sidebar-card h3 {
    font-size: 1.25rem;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.sidebar-card .info-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-card .info-item:last-of-type {
    border-bottom: none;
}

.sidebar-card .label {
    color: var(--text-gray);
}

.sidebar-card .value {
    font-weight: 600;
    color: var(--text-dark);
}

.sidebar-card .btn {
    width: 100%;
    margin-top: 20px;
}

/* ===== About Page ===== */
.about-hero {
    background-color: var(--primary-blue);
    color: var(--text-light);
    padding: 60px 0;
    text-align: center;
}

.about-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-section {
    margin-bottom: 40px;
}

.about-section h2 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-blue);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.value-card {
    background-color: var(--bg-white);
    padding: 25px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
}

.value-card h3 {
    color: var(--primary-blue);
    margin-bottom: 10px;
}

/* ===== Contact Page ===== */
.contact-hero {
    background-color: var(--primary-blue);
    color: var(--text-light);
    padding: 60px 0;
    text-align: center;
}

.contact-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    padding: 60px 0;
}

.contact-info h2 {
    font-size: 1.5rem;
    margin-bottom: 25px;
    color: var(--text-dark);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 25px;
}

.contact-item-icon {
    width: 45px;
    height: 45px;
    background-color: var(--primary-blue);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    flex-shrink: 0;
}

.contact-item h3 {
    font-size: 1rem;
    margin-bottom: 5px;
}

.contact-item p {
    color: var(--text-gray);
    font-size: 0.95rem;
}

/* ===== Form Styles ===== */
.contact-form {
    background-color: var(--bg-light);
    padding: 40px;
    border-radius: var(--radius-lg);
}

.contact-form h2 {
    font-size: 1.5rem;
    margin-bottom: 25px;
    color: var(--text-dark);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-group .required {
    color: #e74c3c;
}

/* ===== Footer ===== */
.footer {
    background-color: var(--text-dark);
    color: var(--text-light);
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--text-light);
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s;
}

.footer-section a:hover {
    color: var(--text-light);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

/* ===== Responsive Design ===== */
@media (max-width: 992px) {
    .formation-content {
        grid-template-columns: 1fr;
    }

    .formation-sidebar {
        position: static;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .nav.active {
        display: block;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-white);
        padding: 20px;
        box-shadow: var(--shadow);
    }

    .nav.active ul {
        flex-direction: column;
        gap: 15px;
    }

    .hero h2 {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .formation-hero h1 {
        font-size: 1.75rem;
    }

    .contact-form {
        padding: 25px;
    }
}

/* ===== Utilities ===== */
.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.mb-40 {
    margin-bottom: 40px;
}