:root {
    /* New Vibrant Palette for Elementary Students/Study Tour */
    --primary-color: #2E5A52; /* Keep deep green for balance */
    --secondary-color: #78C257; /* Growth Green */
    --accent-color: #FF8C42; /* Soaring Orange */
    --highlight-color: #FFD93D; /* Sunny Yellow */
    --sky-blue: #4CB5F5;
    
    --text-dark: #2C3E50;
    --text-light: #FFFFFF;
    --bg-light: #F9FCF8;
    --bg-white: #FFFFFF;
    
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-round: 50px;
    
    --shadow-sm: 0 4px 10px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 8px 20px rgba(46, 90, 82, 0.1);
    --shadow-hover: 0 15px 30px rgba(46, 90, 82, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
}

body {
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
}

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

/* Utilities */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 60px 0; }

.badge-tag {
    display: inline-block;
    padding: 5px 15px;
    background: var(--highlight-color);
    color: var(--text-dark);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: bold;
    margin-bottom: 10px;
}

.title {
    font-size: 2.5rem;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 15px;
    font-weight: 800;
}

.subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: var(--radius-round);
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-color), #FF6B6B);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(255, 107, 107, 0.4);
}

/* Dashboard Specific Styles */
.dashboard-header {
    background: white;
    padding: 20px 0;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img { height: 40px; }

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    padding: 40px 0;
}

.tool-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 25px;
    transition: all 0.3s;
    border: 1px solid #eee;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--secondary-color);
}

.tool-icon {
    width: 60px;
    height: 60px;
    background: #FFFAF0;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--accent-color);
}

.tool-card h3 { margin-bottom: 10px; font-size: 1.3rem; }
.tool-card p { color: #888; font-size: 0.9rem; margin-bottom: 20px; flex-grow: 1; }

.status-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 10px;
    font-size: 0.8rem;
    background: #E8F5E9;
    color: #2E7D32;
    margin-bottom: 15px;
}

/* Document Styles */
.doc-container {
    max-width: 800px;
    margin: 40px auto;
    background: white;
    padding: 60px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.doc-title {
    border-bottom: 3px solid var(--secondary-color);
    padding-bottom: 20px;
    margin-bottom: 30px;
    font-size: 2rem;
    color: var(--primary-color);
}

.doc-section { margin-bottom: 30px; }
.doc-section h2 { color: var(--accent-color); margin-bottom: 15px; }
.doc-section h3 { color: var(--primary-color); margin: 15px 0 10px; }
.doc-section ul { padding-left: 20px; margin-bottom: 15px; }
.doc-section li { margin-bottom: 8px; }

/* Responsive */
@media (max-width: 768px) {
    .title { font-size: 2rem; }
    .doc-container { padding: 30px; }
}