:root {
    --primary-color: #1a1a2e;
    --accent-color: #d4af37; /* ពណ៌មាស */
    --bg-color: #0f0f1a;
    --card-bg: #16213e;
    --text-color: #e0e0e0;
    --text-muted: #a0a0a0;
}

body {
    font-family: 'Inter', 'Kantumruy Pro', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
    line-height: 1.7;
}

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

/* Language Switcher Button Bar */
.lang-switcher {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-bottom: 20px;
}

.lang-btn {
    background-color: transparent;
    color: var(--text-muted);
    border: 1px solid var(--text-muted);
    padding: 6px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.lang-btn.active, .lang-btn:hover {
    background-color: var(--accent-color);
    color: #000;
    border-color: var(--accent-color);
}

/* Header & Logo Section */
.header {
    text-align: center;
    padding: 20px 0 30px;
}

.logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 15px;
}

.app-logo {
    max-width: 100px;
    height: auto;
    border-radius: 16px;
}

.fallback-logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-color);
}

h1 {
    font-size: 2rem;
    margin: 0 0 10px 0;
    color: #fff;
}

.updated-date {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
}

/* Cards Section */
.card {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 20px;
    border: 1px solid rgba(212, 175, 55, 0.2);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

h2 {
    color: var(--accent-color);
    margin-top: 0;
    font-size: 1.25rem;
}

ul {
    padding-left: 20px;
}

li {
    margin-bottom: 10px;
}

.email-btn {
    display: inline-block;
    background-color: var(--accent-color);
    color: #000;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
    margin-top: 10px;
    transition: 0.3s;
}

.email-btn:hover {
    opacity: 0.9;
}

footer {
    text-align: center;
    padding: 20px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Utility classes for initial hiding */
.lang-kh {
    display: none;
}