:root {
    --primary-color: #6d28d9;
    --primary-hover: #5b21b6;
    --dark-color: #1f2937;
    --light-color: #f3f4f6;
    --white: #ffffff;
    --text-color: #374151;
    --border-color: #e5e7eb;
    --transition: all 0.3s ease;
}

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

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

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

ul {
    list-style: none;
}

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

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

.container-small {
    max-width: 600px;
}

.section {
    padding: 80px 0;
}

.grid {
    display: grid;
    gap: 30px;
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

/* Header */
.site-header {
    background-color: var(--white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

#main-nav ul {
    display: flex;
    gap: 30px;
}

#main-nav a {
    font-weight: 500;
    transition: var(--transition);
}

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

.lang-switcher {
    display: flex;
    gap: 10px;
}

.lang-switcher a {
    font-size: 0.85rem;
    font-weight: bold;
    color: #9ca3af;
    transition: var(--transition);
}

.lang-switcher a:hover, .lang-switcher a.active {
    color: var(--primary-color);
}

/* Hero */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('../image/hero-bg.jpg') no-repeat center center/cover;
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 30px;
}

/* Cards */
.card {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.card-image img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.card-body {
    padding: 20px;
}

.card-body h2 {
    font-size: 1.25rem;
    margin-bottom: 10px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 5px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

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

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

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

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

/* CTA Section */
.cta {
    background-color: var(--primary-color);
    color: var(--white);
    text-align: center;
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-family: inherit;
}

/* Footer */
.site-footer {
    background-color: var(--dark-color);
    color: var(--white);
    padding: 60px 0;
}

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

.footer-links ul {
    display: flex;
    gap: 30px;
}

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

/* Animations */
.feature-card {
    opacity: 0;
    transform: translateY(20px);
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}