/* ============================================= */
/* Global Variables & Reset                       */
/* ============================================= */
:root {
    --bg-main: #f4f7fa;
    --bg-surface: #ffffff;
    --border-color: #e9ecef;
    --header-bg: #f8f9fa;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-danger: #dc3545;

    /* Category side-bar colors */
    --side-color-mandatory: #343a40;
    --side-color-choice: #fd7e14;
    --side-color-lab: #0d6efd;
    --side-color-spirit: #6c757d;
    --side-color-seminar: #ec4899;
    --side-color-workshop: #14b8a6;
    --side-color-project: #6366f1;
    --side-color-english: #ef4444;
    --side-color-other: #9ca3af;

    /* Category badge backgrounds */
    --cat-mandatory-bg: #f1f3f5;
    --cat-choice-bg: #fff8f0;
    --cat-lab-bg: #f0f6ff;
    --cat-spirit-bg: #f8f9fa;
    --cat-seminar-bg: #fdf2f8;
    --cat-workshop-bg: #f0fdfa;
    --cat-project-bg: #eef2ff;
    --cat-english-bg: #fef2f2;
    --cat-other-bg: #f9fafb;

    --border-light: #ddd;
    --border-medium: #dee2e6;
    --primary-color: #007bff;
    --primary-light: rgba(0, 123, 255, 0.25);
    --success-color: #28a745;
    --success-bg-light: #eaf6ec;
    --danger-color: #ef4444;
    --icon-color: #9ca3af;

    --progress-done-bg: #10b981;
    --progress-planned-bg: #a7f3d0;
    --progress-track-bg: #f0f0f0;

    /* Requirement card colors */
    --card-purple-bg: #f3e8ff;
    --card-purple-border: #c084fc;
    --card-purple-fill: #a855f7;
    --card-green-bg: #dcfce7;
    --card-green-border: #4ade80;
    --card-green-fill: #22c55e;
    --card-red-bg: #fee2e2;
    --card-red-border: #f87171;
    --card-red-fill: var(--danger-color);
    --card-orange-bg: #ffedd5;
    --card-orange-border: #fb923c;
    --card-orange-fill: #f97316;
    --card-blue-bg: #dbeafe;
    --card-blue-border: #60a5fa;
    --card-blue-fill: #3b82f6;
    --card-yellow-bg: #fef9c3;
    --card-yellow-border: #facc15;
    --card-yellow-fill: #eab308;
    --card-pink-bg: #fdf2f8;
    --card-pink-border: #f472b6;
    --card-pink-fill: #ec4899;
    --card-teal-bg: #f0fdfa;
    --card-teal-border: #2dd4bf;
    --card-teal-fill: #14b8a6;
    --card-indigo-bg: #eef2ff;
    --card-indigo-border: #818cf8;
    --card-indigo-fill: #6366f1;
    --card-gray-bg: #f9fafb;
    --card-gray-border: #d1d5db;
    --card-gray-fill: #6b7280;

    --header-height: 64px;
    --mode-bar-height: 48px;
    --font-family: 'Heebo', sans-serif;
    --grade-good: #22c55e;
    --grade-bad: #ef4444;
    --grade-mid: #f59e0b;
    --simulation-color: #8b5cf6;
}

html { scroll-behavior: smooth; }
*, *::before, *::after { box-sizing: border-box; }

body {
    font-family: var(--font-family);
    background: var(--bg-main);
    direction: rtl;
    margin: 0;
    padding-top: var(--header-height);
}
/* ===== Site Header ===== */
.site-header {
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-medium);
    height: var(--header-height);
    position: fixed;
    top: 0; right: 0; left: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    transition: background-color 0.3s;
}

body.simulation-mode .site-header {
    background-color: #f5f0ff;
    border-bottom-color: var(--simulation-color);
}

.header-container {
    width: 100%;
    max-width: 1800px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.logo {
    display: flex; align-items: center; gap: 10px;
    font-size: 20px; font-weight: 700;
    color: var(--text-primary); text-decoration: none;
}

.header-actions {
    display: flex; align-items: center; gap: 12px;
}

.header-action-btn {
    display: flex; align-items: center; gap: 8px;
    background-color: #f0f0f0; color: var(--text-secondary);
    padding: 8px 16px; border-radius: 50px;
    text-decoration: none; font-size: 14px; font-weight: 500;
    transition: background-color 0.2s, color 0.2s;
    border: none; cursor: pointer; font-family: inherit;
}

.header-action-btn:hover { background-color: #e0e0e0; color: var(--text-primary); }
.header-action-btn svg { color: var(--text-primary); }
.header-action-btn.active { background-color: var(--simulation-color); color: white; }
.header-action-btn.active svg { color: white; }


/* ===== Simulation Banner ===== */
.simulation-banner {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0; right: 0;
    z-index: 998;
    background: linear-gradient(135deg, var(--simulation-color), #7c3aed);
    color: white; padding: 10px 24px;
    text-align: center; font-weight: 700; font-size: 14px;
    align-items: center; justify-content: center; gap: 16px;
}

body.simulation-mode .simulation-banner { display: flex; }
body.simulation-mode { padding-top: calc(var(--header-height) + 44px); }
body.simulation-mode .content-wrapper { height: calc(100vh - var(--header-height) - 44px); }
.simulation-banner button {
    background: white; color: var(--simulation-color);
    border: none; padding: 6px 16px; border-radius: 50px;
    font-weight: 700; font-family: inherit; cursor: pointer; font-size: 13px;
}

/* ===== Major Selector Input ===== */
.major-selector-center {
    display: flex; justify-content: center;
    align-items: center; flex: 1;
}

.major-input {
    width: 100%; max-width: 500px;
    padding: 12px 24px;
    background-color: white; color: var(--text-primary);
    border: 1px solid #ced4da; border-radius: 50px;
    font-size: 16px; font-weight: 500;
    font-family: var(--font-family);
    cursor: pointer; transition: all 0.2s;
    text-align: right; outline: none;
}

.major-input:hover { border-color: #adb5bd; }
.major-input:focus { border-color: #0d6efd; box-shadow: 0 0 0 3px rgba(13,110,253,0.1); }
.major-input::placeholder { color: var(--text-secondary); font-weight: 400; }

/* ===== Content Wrapper & Layout ===== */
.content-wrapper {
    display: flex;
    height: calc(100vh - var(--header-height));
}

.main {
    order: 1; flex: 1; min-width: 0;
    padding: 30px; overflow-y: auto;
    min-height: 500px;
}

.summary {
    order: 2; flex: 0 0 340px;
    padding: 20px; background: var(--bg-surface);
    border-right: 1px solid var(--border-light);
    border-left: none; overflow-y: auto;
}

.summary h2 { margin-top: 0; font-size: 22px; }
.table-wrapper { overflow-x: auto; width: 100%; }

/* Desktop-only table visibility */
.desktop-only { display: block; }

/* ===== Summary Column ===== */
.total-progress-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 12px 20px;
    margin-bottom: 18px;
}

/* Grade card header with toggle */
.grade-card-header {
    display: flex;
    justify-content: flex-start;
    margin-bottom: -8px;
}

.toggle-average-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px 10px;
    color: var(--text-secondary);
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color 0.2s, background 0.2s;
    font-family: var(--font-family);
    font-size: 13px;
    font-weight: 600;
}

.toggle-average-btn:hover {
    color: var(--text-primary);
    background: var(--bg-main);
}

.grade-card-hidden-msg {
    text-align: center;
    padding: 12px 0;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

/* Hide grade values when average is toggled off */
body.grades-hidden .grade-input-cell {
    visibility: hidden;
}

body.grades-hidden .stat-item:has(.card-grade-input) {
    visibility: hidden;
}


.hero-stat { text-align: center; margin: 16px 0; }
.hero-value { font-size: 44px; font-weight: 800; color: var(--progress-done-bg); line-height: 1; }
.hero-subtext { font-size: 16px; color: var(--text-primary); font-weight: 500; }
.hero-breakdown-text { font-size: 14px; color: var(--text-secondary); margin-top: 4px; }
.hero-breakdown-text strong { font-weight: 700; color: var(--text-primary); }

.simulated-avg-row {
    display: flex; justify-content: space-between; align-items: center;
    padding: 10px 12px; margin-top: 8px;
    background: linear-gradient(135deg, #f5f0ff, #ede4ff);
    border-radius: 8px; border: 1px solid var(--simulation-color);
}

.sim-label { font-size: 13px; font-weight: 600; color: var(--simulation-color); }
.sim-value { font-size: 22px; font-weight: 800; color: var(--simulation-color); }

.total-progress-legend {
    display: flex; flex-wrap: wrap;
    gap: 12px; row-gap: 8px;
    margin-top: 12px;
}

.legend-item {
    display: flex; align-items: center;
    gap: 6px; font-size: 13px; color: var(--text-secondary);
}
.legend-item .dot { width: 10px; height: 10px; border-radius: 50%; }
.legend-item strong { font-weight: 700; color: var(--text-primary); }

.progress-bar-container {
    width: 100%; background-color: var(--progress-track-bg);
    border-radius: 50px; height: 10px; overflow: hidden;
}
.stacked-progress-bar { display: flex; height: 100%; width: 100%; }
.bar-segment { transition: width 0.5s ease-in-out; }

/* ===== Requirement Cards ===== */
.summary-cards { display: flex; flex-direction: column; gap: 12px; }

.requirement-card {
    border-radius: 8px; padding: 12px 16px; border: none;
    border-left: 5px solid transparent;
    box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}

.req-card-header {
    display: flex; justify-content: space-between;
    align-items: baseline; margin-bottom: 8px;
}

.card-title { margin: 0; font-size: 15px; font-weight: 700; color: var(--text-primary); }
.card-progress-summary { font-size: 13px; font-weight: 500; color: var(--text-secondary); }
.card-progress-summary strong { font-weight: 700; }
.card-progress-breakdown { font-size: 13px; color: var(--text-secondary); font-weight: 500; margin-top: 8px; }
.card-progress-breakdown .separator { margin: 0 4px; opacity: 0.5; }
.card-footnote {
    font-size: 12px; color: var(--text-secondary); opacity: 0.9;
    margin: 8px 0 0 0; padding-top: 8px;
    border-top: 1px solid rgba(0,0,0,0.05);
}

/* Card color variants */
.requirement-card.purple  { background: var(--card-purple-bg); border-color: var(--card-purple-border); }
.requirement-card.purple .bar-completed { background-color: var(--card-purple-fill); }
.requirement-card.purple .bar-planned { background-color: rgba(168, 85, 247, 0.5); }
.requirement-card.purple .card-progress-summary strong { color: var(--card-purple-fill); }

.requirement-card.green { background: var(--card-green-bg); border-color: var(--card-green-border); }
.requirement-card.green .bar-completed { background-color: var(--card-green-fill); }
.requirement-card.green .bar-planned { background-color: rgba(34, 197, 94, 0.5); }
.requirement-card.green .card-progress-summary strong { color: var(--card-green-fill); }

.requirement-card.red { background: var(--card-red-bg); border-color: var(--card-red-border); }
.requirement-card.red .bar-completed { background-color: var(--card-red-fill); }
.requirement-card.red .bar-planned { background-color: rgba(239, 68, 68, 0.5); }
.requirement-card.red .card-progress-summary strong { color: var(--card-red-fill); }

.requirement-card.orange { background: var(--card-orange-bg); border-color: var(--card-orange-border); }
.requirement-card.orange .bar-completed { background-color: var(--card-orange-fill); }
.requirement-card.orange .bar-planned { background-color: rgba(249, 115, 22, 0.5); }
.requirement-card.orange .card-progress-summary strong { color: var(--card-orange-fill); }

.requirement-card.blue { background: var(--card-blue-bg); border-color: var(--card-blue-border); }
.requirement-card.blue .bar-completed { background-color: var(--card-blue-fill); }
.requirement-card.blue .bar-planned { background-color: rgba(59, 130, 246, 0.5); }
.requirement-card.blue .card-progress-summary strong { color: var(--card-blue-fill); }

.requirement-card.yellow { background: var(--card-yellow-bg); border-color: var(--card-yellow-border); }
.requirement-card.yellow .bar-completed { background-color: var(--card-yellow-fill); }
.requirement-card.yellow .bar-planned { background-color: rgba(234, 179, 8, 0.5); }
.requirement-card.yellow .card-progress-summary strong { color: var(--card-yellow-fill); }

.requirement-card.pink { background: var(--card-pink-bg); border-color: var(--card-pink-border); }
.requirement-card.pink .bar-completed { background-color: var(--card-pink-fill); }
.requirement-card.pink .bar-planned { background-color: rgba(236, 72, 153, 0.5); }
.requirement-card.pink .card-progress-summary strong { color: var(--card-pink-fill); }

.requirement-card.teal { background: var(--card-teal-bg); border-color: var(--card-teal-border); }
.requirement-card.teal .bar-completed { background-color: var(--card-teal-fill); }
.requirement-card.teal .bar-planned { background-color: rgba(45, 212, 191, 0.5); }
.requirement-card.teal .card-progress-summary strong { color: var(--card-teal-fill); }

.requirement-card.indigo { background: var(--card-indigo-bg); border-color: var(--card-indigo-border); }
.requirement-card.indigo .bar-completed { background-color: var(--card-indigo-fill); }
.requirement-card.indigo .bar-planned { background-color: rgba(99, 102, 241, 0.5); }
.requirement-card.indigo .card-progress-summary strong { color: var(--card-indigo-fill); }

.requirement-card.gray { background: var(--card-gray-bg); border-color: var(--card-gray-border); }
.requirement-card.gray .bar-completed { background-color: var(--card-gray-fill); }
.requirement-card.gray .bar-planned { background-color: rgba(107, 114, 128, 0.5); }
.requirement-card.gray .card-progress-summary strong { color: var(--card-gray-fill); }

.reset-container { margin-top: 24px; }
.reset-btn {
    width: 100%; padding: 10px;
    border: 1px solid var(--danger-color);
    background: transparent; color: var(--danger-color);
    border-radius: 8px; cursor: pointer;
    font-weight: 500; font-family: inherit;
}
.reset-btn:hover { background-color: #fef2f2; }

/* ===== Simulation Tools ===== */
.simulation-tools { margin-top: 20px; }
.simulation-tools h3 { font-size: 18px; margin-bottom: 12px; }

.sim-tool-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 16px; margin-bottom: 14px;
}
.sim-tool-card h4 { margin: 0 0 6px 0; font-size: 15px; font-weight: 700; }
.sim-tool-desc { font-size: 13px; color: var(--text-secondary); margin: 0 0 12px 0; }

.sim-input-group { display: flex; gap: 8px; }

.sim-input-group input {
    flex: 1; padding: 10px 14px;
    border: 1px solid var(--border-color); border-radius: 8px;
    font-family: inherit; font-size: 14px;
    outline: none; direction: rtl;
}
.sim-input-group input:focus {
    border-color: var(--simulation-color);
    box-shadow: 0 0 0 3px rgba(139,92,246,0.1);
}

.sim-btn {
    padding: 10px 20px; background: var(--simulation-color);
    color: white; border: none; border-radius: 8px;
    font-weight: 700; font-family: inherit;
    cursor: pointer; font-size: 14px;
}
.sim-btn:hover { background: #7c3aed; }
.sim-results { margin-top: 14px; }

.sim-result-item {
    display: flex; justify-content: space-between;
    align-items: center; padding: 10px 14px;
    background: #f8f7ff; border: 1px solid #e9e5ff;
    border-radius: 8px; margin-bottom: 8px; font-size: 13px;
}
.sim-result-item .course-name { font-weight: 600; flex: 1; }
.sim-result-item .impact-badge {
    background: var(--simulation-color); color: white;
    padding: 3px 10px; border-radius: 50px;
    font-size: 12px; font-weight: 700; margin-right: 8px;
}
.sim-result-item .grade-info {
    font-size: 12px; color: var(--text-secondary); margin-right: 8px;
}
.sim-no-result {
    text-align: center; padding: 16px;
    color: var(--text-secondary); font-size: 14px;
}
.sim-result-summary {
    padding: 12px;
    background: linear-gradient(135deg, #f5f0ff, #ede4ff);
    border-radius: 8px; text-align: center;
    font-size: 14px; font-weight: 600;
    color: var(--simulation-color); margin-top: 10px;
}

/* ============================================= */
/* ===== Semester Containers                      */
/* ============================================= */

#add-semester-btn {
    background-color: var(--text-secondary); color: white;
    border: none; padding: 10px 20px; border-radius: 8px;
    font-weight: 700; font-family: var(--font-family);
    cursor: pointer; margin-top: 20px;
}
#add-semester-btn:hover { background-color: #5a6268; }

.semester-container {
    background-color: var(--bg-surface); border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    overflow: hidden; margin-bottom: 30px;
}

.semester-header { padding: 20px 24px; border-bottom: 1px solid var(--border-color); }
.semester-header h3 {
    display: flex; justify-content: space-between;
    align-items: center; margin: 0 0 4px 0; font-size: 22px;
}
.semester-header p { margin: 0; color: var(--text-secondary); font-size: 14px; }

.delete-semester-btn {
    background: none; border: 1px solid var(--border-color);
    color: var(--text-secondary); font-size: 13px;
    padding: 4px 10px; border-radius: 6px;
    cursor: pointer; font-family: inherit;
}
.delete-semester-btn:hover {
    background-color: #f8f9fa;
    color: var(--text-danger);
    border-color: var(--text-danger);
}

/* ===== Main Course Table ===== */
.courses-table { width: 100%; border-collapse: collapse; table-layout: auto; }
.courses-table thead { background-color: var(--header-bg); }
.courses-table th {
    padding: 12px 24px; font-size: 12px; font-weight: 700;
    color: var(--text-secondary); text-transform: uppercase;
    letter-spacing: 0.5px; text-align: right;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}
.courses-table td { padding: 14px 24px; vertical-align: middle; }

.col-drag { width: 36px; }
.col-actions { width: 48px; }

.course-row {
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s;
}
.course-row:last-child { border-bottom: none; }
.course-row:hover { background-color: transparent; }
.course-row td:first-child { border-right: 4px solid transparent; }

/* Category side colors for rows */
.course-row.cat-mandatory td:first-child { border-right-color: var(--side-color-mandatory); }
.course-row.cat-choice td:first-child { border-right-color: var(--side-color-choice); }
.course-row.cat-lab td:first-child { border-right-color: var(--side-color-lab); }
.course-row.cat-spirit td:first-child { border-right-color: var(--side-color-spirit); }
.course-row.cat-seminar td:first-child { border-right-color: var(--side-color-seminar); }
.course-row.cat-workshop td:first-child { border-right-color: var(--side-color-workshop); }
.course-row.cat-project td:first-child { border-right-color: var(--side-color-project); }
.course-row.cat-english td:first-child { border-right-color: var(--side-color-english); }
.course-row.cat-other td:first-child { border-right-color: var(--side-color-other); }

/* Drag Handle */
.drag-handle {
    width: 20px; text-align: center;
    color: #ced4da; cursor: grab;
    padding-right: 12px; padding-left: 0;
    user-select: none;
}
.drag-handle:active { cursor: grabbing; }

.semester-container tbody.drop-hover,
.mobile-courses-list.drop-hover { background: #e6f0ff; }
.course-row.dragging { opacity: 0.5; background: #f8f9fa; }
.course-card.dragging { opacity: 0.5; }

/* Course Info */
.course-info .name { font-weight: 500; font-size: 15px; color: var(--text-primary); }
.course-info .code { font-size: 13px; color: var(--text-secondary); }
.data-cell { text-align: center !important; }

/* Prereq cell */
.prereq-cell {
    font-size: 13px; color: var(--text-secondary);
    max-width: 200px; word-wrap: break-word;
}
.prereq-text { font-size: 12px; line-height: 1.4; }
.no-prereq { color: #ccc; }

/* ===== Category Badge ===== */
.category-badge {
    display: inline-block; padding: 4px 12px;
    font-size: 12px; font-weight: 700;
    border-radius: 16px; line-height: 1.2;
    border: 1px solid; white-space: nowrap;
}

.category-badge.cat-mandatory { background-color: var(--cat-mandatory-bg); color: var(--side-color-mandatory); border-color: var(--side-color-mandatory); }
.category-badge.cat-choice { background-color: var(--cat-choice-bg); color: var(--side-color-choice); border-color: var(--side-color-choice); }
.category-badge.cat-lab { background-color: var(--cat-lab-bg); color: var(--side-color-lab); border-color: var(--side-color-lab); }
.category-badge.cat-spirit { background-color: var(--cat-spirit-bg); color: var(--side-color-spirit); border-color: var(--side-color-spirit); }
.category-badge.cat-seminar { background-color: var(--cat-seminar-bg); color: var(--side-color-seminar); border-color: var(--side-color-seminar); }
.category-badge.cat-workshop { background-color: var(--cat-workshop-bg); color: var(--side-color-workshop); border-color: var(--side-color-workshop); }
.category-badge.cat-project { background-color: var(--cat-project-bg); color: var(--side-color-project); border-color: var(--side-color-project); }
.category-badge.cat-english { background-color: var(--cat-english-bg); color: var(--side-color-english); border-color: var(--side-color-english); }
.category-badge.cat-other { background-color: var(--cat-other-bg); color: var(--side-color-other); border-color: var(--side-color-other); }

/* Core & English badges */
.core-tag {
    color: var(--card-green-fill); font-weight: 700;
    font-size: 12px;
}

.core-badge {
    display: inline-block;
    background: var(--card-green-bg);
    color: var(--card-green-fill);
    border: 1px solid var(--card-green-border);
    padding: 2px 10px; border-radius: 12px;
    font-size: 11px; font-weight: 700;
    white-space: nowrap;
}

.pf-badge {
    color: #f59e0b; font-weight: 700; font-size: 12px;
}
.pf-label {
    color: var(--text-secondary); font-size: 13px; font-weight: 600;
}

/* Added badge in selector */
.added-badge {
    font-size: 12px; font-weight: 700;
    color: var(--success-color);
}

/* Delete button */
.delete-btn {
    background: none; border: none; padding: 4px;
    color: var(--text-secondary); line-height: 1; cursor: pointer;
}
.delete-btn:hover { color: var(--text-danger); }
.delete-btn svg { width: 18px; height: 18px; }

.done-checkbox {
    cursor: pointer; width: 18px; height: 18px;
    accent-color: var(--success-color);
}

.english-checkbox {
    cursor: pointer; width: 18px; height: 18px;
    accent-color: var(--primary-color);
}

/* ===== Grade Input ===== */
.grade-input-cell { min-width: 80px; }

.grade-input {
    width: 65px; padding: 6px 10px;
    border: 1px solid var(--border-color); border-radius: 6px;
    text-align: center; font-family: inherit;
    font-size: 14px; font-weight: 600;
    outline: none; transition: border-color 0.2s, box-shadow 0.2s;
    background: var(--bg-surface);
}
.grade-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}
.grade-input.grade-high { border-color: var(--grade-good); color: var(--grade-good); background: #f0fdf4; }
.grade-input.grade-mid { border-color: var(--grade-mid); color: var(--grade-mid); background: #fffbeb; }
.grade-input.grade-low { border-color: var(--grade-bad); color: var(--grade-bad); background: #fef2f2; }
.grade-input.simulated {
    border-color: var(--simulation-color);
    background: #f5f0ff;
    color: var(--simulation-color);
}

/* ===== Semester Footer ===== */
.semester-footer {
    display: flex; justify-content: space-between;
    align-items: center; padding: 16px 24px;
    background-color: var(--header-bg);
    border-top: 1px solid var(--border-color);
}
.semester-summary { font-weight: 700; color: var(--text-primary); }
.semester-avg { font-size: 13px; color: var(--text-secondary); margin-right: 16px; }

.add-course-btn {
    background-color: #0d6efd; color: white;
    border: none; padding: 8px 16px; border-radius: 8px;
    font-weight: 700; font-family: var(--font-family);
    cursor: pointer; display: flex; align-items: center; gap: 8px;
}
.add-course-btn:hover { background-color: #0b5ed7; }

/* ===== Empty Semester ===== */
.empty-semester {
    padding: 40px 24px; text-align: center;
    color: var(--text-secondary); font-size: 14px;
}
.empty-semester svg { color: #ced4da; margin-bottom: 8px; }