/* Emerald Theme - Modern Responsive Design */
:root {
    --emerald-primary: #10b981;
    --emerald-dark: #059669;
    --emerald-light: #34d399;
    --emerald-lighter: #6ee7b7;
    --emerald-darkest: #047857;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    font-size: 16px;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--emerald-darkest) 0%, var(--emerald-dark) 100%);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
    color: white;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

nav a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

nav a:hover {
    color: var(--emerald-lighter);
}

.lang-switcher {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.lang-switcher a {
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 5px;
    text-decoration: none;
    color: white;
    transition: background 0.3s;
    font-size: 0.9rem;
}

.lang-switcher a:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--emerald-primary) 0%, var(--emerald-dark) 100%);
    color: white;
    padding: 4rem 2rem;
    border-radius: 10px;
    margin-bottom: 3rem;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.95;
}

/* Content Sections */
section {
    margin-bottom: 3rem;
}

h1 {
    color: var(--emerald-darkest);
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

h2 {
    color: var(--emerald-dark);
    font-size: 2rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid var(--emerald-primary);
}

h3 {
    color: var(--emerald-dark);
    font-size: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

/* Images */
img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1.5rem 0;
    box-shadow: var(--shadow);
}

.content-image {
    max-width: 600px;
    margin: 2rem auto;
    display: block;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background: white;
    box-shadow: var(--shadow);
    border-radius: 8px;
    overflow: hidden;
}

thead {
    background: var(--emerald-dark);
    color: white;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

tbody tr:hover {
    background: var(--bg-light);
}

tbody tr:last-child td {
    border-bottom: none;
}

/* Lists */
ul, ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

li {
    margin-bottom: 0.5rem;
    line-height: 1.8;
}

/* Links */
a {
    color: var(--emerald-primary);
    text-decoration: none;
    transition: color 0.3s;
}

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

/* Cards */
.card {
    background: white;
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--emerald-primary);
}

.card h3 {
    margin-top: 0;
    color: var(--emerald-dark);
}

/* FAQ Section */
.faq-container {
    margin: 3rem 0;
}

.faq-item {
    background: white;
    border-radius: 8px;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question {
    background: var(--emerald-primary);
    color: white;
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    transition: background 0.3s;
}

.faq-question:hover {
    background: var(--emerald-dark);
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: bold;
    transition: transform 0.3s;
}

.faq-question.active::after {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-answer.active {
    max-height: 500px;
    padding: 1.5rem;
}

.faq-answer p {
    margin-bottom: 0.5rem;
}

/* Footer */
footer {
    background: var(--text-dark);
    color: white;
    padding: 2rem 1rem;
    margin-top: 4rem;
    text-align: center;
}

footer a {
    color: var(--emerald-lighter);
}

footer a:hover {
    color: var(--emerald-light);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 1rem;
    }

    nav ul {
        flex-direction: column;
        gap: 0.5rem;
        width: 100%;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.25rem;
    }

    table {
        font-size: 0.9rem;
    }

    th, td {
        padding: 0.5rem;
    }

    .card {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    main {
        padding: 1rem 0.5rem;
    }

    .hero {
        padding: 2rem 1rem;
    }

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

    table {
        display: block;
        overflow-x: auto;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-2 {
    margin-top: 2rem;
}

.mb-2 {
    margin-bottom: 2rem;
}

.highlight {
    background: var(--emerald-lighter);
    padding: 0.2rem 0.5rem;
    border-radius: 3px;
}