/* Modern Minimal Variables */
:root {
    --primary: #0f172a;
    --secondary: #3b82f6;
    --accent: #f97316;
    --background: #f8fafc;
    --text: #1e293b;
    --text-light: #64748b;
    --card: #ffffff;
    --success: #10b981;
    --warning: #f59e0b;
    --border: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --radius: 0.375rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 3rem;
    --max-width: 1200px;
    --font-main: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Reset and Base Styles */
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--font-main); line-height: 1.6; color: var(--text); background-color: var(--background); overflow-x: hidden; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--spacing-md); }

/* Typography */
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.2; margin-bottom: var(--spacing-sm); }
h1 { font-size: 2.5rem; margin-bottom: var(--spacing-md); }
h2 { font-size: 1.875rem; margin-top: var(--spacing-lg); margin-bottom: var(--spacing-md); position: relative; padding-bottom: var(--spacing-sm); }
h2::after { content: ""; position: absolute; left: 0; bottom: 0; height: 4px; width: 60px; background-color: var(--secondary); }
h3 { font-size: 1.5rem; margin-top: var(--spacing-md); }
p { margin-bottom: var(--spacing-md); }
a { color: var(--secondary); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--primary); }

/* Section Layout */
section { margin: var(--spacing-lg) 0; opacity: 0; transform: translateY(20px); animation: fadeIn 0.5s ease forwards; }
@keyframes fadeIn { to { opacity: 1; transform: translateY(0); } }

/* Rankings Container */
.rankings-container { margin-bottom: var(--spacing-md); }

/* Desktop Rankings Table (Original) */
.desktop-rankings { overflow-x: auto; }
.rankings-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    table-layout: fixed;
    border: none !important;
}
.rankings-table th,
.rankings-table td {
    padding: var(--spacing-sm);
    border: none !important;
}
.rankings-table th {
    background-color: var(--primary);
    color: white;
    font-weight: 600;
    position: sticky;
    top: 0;
    white-space: nowrap;
}
.rankings-table th:nth-child(1) { width: 8%; }
.rankings-table th:nth-child(2) { width: 22%; }
.rankings-table th:nth-child(3) { width: 10%; }
.rankings-table th:nth-child(4) { width: 15%; }
.rankings-table th:nth-child(5) { width: 15%; }
.rankings-table th:nth-child(6) { width: 15%; }
.rankings-table th:nth-child(7) { width: 15%; }
.rankings-table tbody tr.school-row {
    border-bottom: 1px solid var(--border);
    cursor: pointer; /* Indicate clickability */
}
.rankings-table tbody tr:hover {
    background-color: rgba(59, 130, 246, 0.05);
}
.rankings-table tbody tr.expanded {
    background-color: #ffffff;
}
.desktop-rankings .school-description-row {
    display: none; /* Hidden by default */
    background-color: #f9fafb;
}
.desktop-rankings .school-description-row.expanded {
    display: table-row; /* Shown when expanded */
}
.school-description {
    padding: var(--spacing-md);
    font-size: inherit;
    color: inherit;
    width: 50%;
    vertical-align: top;
}
.school-data {
    padding: var(--spacing-md);
    font-size: inherit;
    color: inherit;
    width: 50%;
    vertical-align: top;
}
.school-data ul {
    list-style: none;
    padding: 0;
}
.school-data li {
    margin-bottom: var(--spacing-sm);
}
.school-data strong {
    color: var(--text);
    display: inline-block;
    width: 200px;
}

/* Grade Badge */
.grade-badge,
.cr_grade-badge {
    display: inline-block;
    width: 2rem;
    height: 2rem;
    line-height: 2rem;
    text-align: center;
    border-radius: 50%;
    font-weight: bold;
    color: white;
}

/* A Grades */
.grade-a-plus, .cr_grade-a-plus { background-color: #10b981; }
.grade-a, .cr_grade-a { background-color: #22c55e; }
.grade-a-minus, .cr_grade-a-minus { background-color: #34d399; }

/* B Grades */
.grade-b-plus, .cr_grade-b-plus { background-color: #60a5fa; }
.grade-b, .cr_grade-b { background-color: #3b82f6; }
.grade-b-minus, .cr_grade-b-minus { background-color: #93c5fd; }

/* C Grades */
.grade-c-plus, .cr_grade-c-plus { background-color: #fbbf24; }
.grade-c, .cr_grade-c { background-color: #f59e0b; }
.grade-c-minus, .cr_grade-c-minus { background-color: #fcd34d; }

/* D Grades */
.grade-d-plus, .cr_grade-d-plus { background-color: #f87171; }
.grade-d, .cr_grade-d { background-color: #ef4444; }
.grade-d-minus, .cr_grade-d-minus { background-color: #fca5a5; }

/* F Grade */
.grade-f, .cr_grade-f { background-color: #dc2626; }

/* School Cards Grid (Top Ranked Schools) */
.school-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}
.school-card {
    background-color: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
}
.school-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}
.school-card-title {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--primary);
}
.school-card-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}
.school-stat {
    border-left: 3px solid var(--secondary);
    padding-left: var(--spacing-sm);
}
.stat-label {
    font-size: 0.875rem;
    color: var(--text-light);
}
.stat-value {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary);
}

/* Mobile Card Layout (Simplified) */
.cr_school-card {
    background-color: var(--card);
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}
.cr_school-card__header {
    background-color: var(--primary);
    padding: 1rem;
    display: flex;
    align-items: center;
    position: relative;
}
.cr_grade-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    z-index: 1;
}
.cr_school-card__title {
    margin: 0 0 0 2.5rem;
    color: #ffffff;
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 2rem;
}
.cr_school-card__summary {
    padding: var(--spacing-md);
    background-color: #fff;
    border-bottom: 1px solid var(--border);
}
.cr_school-card__summary dl {
    margin: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    align-items: center;
}
.cr_school-card__summary dt {
    font-weight: 600;
    color: var(--text);
    font-size: 0.9rem;
    padding: 0.25rem 0;
    border-left: 2px solid var(--secondary);
    padding-left: 0.5rem;
}
.cr_school-card__summary dd {
    margin: 0;
    color: var(--text);
    font-size: 0.95rem;
    font-weight: 500;
    text-align: right;
}
.cr_school-card__details dl {
    margin: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}
.cr_school-card__details dt {
    font-weight: bold;
    color: var(--text);
    font-size: 0.9rem;
}
.cr_school-card__details dd {
    margin: 0;
    color: var(--text);
    font-size: 0.9rem;
}
.cr_school-card__description {
    padding: var(--spacing-md);
    border-top: 1px solid var(--border);
}
.cr_school-card__details {
    padding: var(--spacing-md);
}
.cr_school-card__button {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--secondary);
    color: #ffffff;
    text-decoration: none;
    border-radius: var(--radius);
    font-weight: bold;
    transition: background-color 0.2s;
    margin-top: 0.5rem;
}
.cr_school-card__button:hover {
    background-color: var(--primary);
    color: #ffffff;
}
.toggle-details {
    background-color: var(--secondary);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background-color 0.2s ease;
    margin-top: var(--spacing-sm);
    width: 100%;
    font-weight: 600;
}
.toggle-details:hover {
    background-color: var(--primary);
}

/* Responsive Styles */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }

    /* Top Ranked Schools */
    .school-cards-grid {
        grid-template-columns: 1fr;
    }

    /* Complete College Rankings */
    .desktop-rankings {
        display: none;
    }
    .mobile-rankings {
        display: block;
    }
    .cr_school-card__details {
        display: none;
    }
    .cr_school-card__details.expanded {
        display: block;
    }
    /* Ensure Visit Website button text is white with no underline on hover */
    .cr_school-card__button {
        color: #ffffff; /* Reinforce white text */
        text-decoration: none; /* No underline */
    }
    .cr_school-card__button:hover {
        color: #ffffff; /* White text on hover */
        text-decoration: none; /* No underline on hover */
        background-color: var(--primary); /* Maintain hover background change */
    }
}

@media (min-width: 769px) {
    .mobile-rankings {
        display: none;
    }
    .desktop-rankings {
        display: block;
    }
}