/* ===== Settings Modal ===== */
.exemption-field-row {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 16px; background: var(--bg-main);
    border: 1px solid var(--border-color); border-radius: 10px;
    margin-bottom: 10px; transition: border-color 0.2s;
}
.exemption-field-row:hover { border-color: var(--primary-color); }
.exemption-field-row .exemption-label { display: flex; flex-direction: column; flex: 1; }
.exemption-field-row .exemption-label .title { font-weight: 700; font-size: 14px; color: var(--text-primary); }
.exemption-field-row .exemption-label .subtitle { font-size: 12px; color: var(--text-secondary); margin-top: 2px; }
.exemption-field-row .exemption-color-dot {
    width: 12px; height: 12px; border-radius: 50%;
    margin-left: 12px; flex-shrink: 0;
}
.exemption-input {
    width: 70px; padding: 8px 10px;
    border: 1px solid var(--border-color); border-radius: 8px;
    text-align: center; font-family: inherit;
    font-size: 15px; font-weight: 700;
    outline: none; transition: border-color 0.2s, box-shadow 0.2s;
    margin-right: 12px;
}
.exemption-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}
.settings-description {
    font-size: 14px; color: var(--text-secondary);
    margin: 0 0 20px 0; line-height: 1.6;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
}

/* ===== Onboarding ===== */
body.is-onboarding .site-header,
body.is-onboarding .content-wrapper {
    /* blur and pointer-events removed — welcome screen is now inline */
}

body.is-onboarding #close-major-selector-btn { display: none !important; }
body.is-onboarding #add-semester-btn { display: none !important; }
body.is-onboarding .summary { display: none !important; }
body.is-onboarding #bottom-nav { display: none !important; }
body.is-onboarding #top-disclaimer-banner { display: none !important; }
body.is-onboarding #simulation-toggle-btn { display: none !important; }
body.is-onboarding #settings-btn { display: none !important; }

/* Major selector removed from header — users pick major via welcome screen */
.major-selector-center { display: none !important; }

/* Auth button: completely invisible when not logged in, shows avatar when logged in */
#auth-header-btn > svg { display: none !important; }
.auth-btn-text { display: none !important; }
#auth-header-btn {
    background: transparent !important;
    padding: 4px !important;
    min-width: 0 !important;
}

body.is-onboarding #major-selector-overlay {
    background-color: rgba(33, 37, 41, 0.9);
    backdrop-filter: blur(5px);
}

body.is-onboarding .modal-content {
    border-radius: 16px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    border: none; max-width: 700px;
    height: 85vh; max-height: 800px;
    background-color: #f8f9fa;
}

body.is-onboarding .modal-header {
    background: linear-gradient(135deg, #0d6efd 0%, #0a58ca 100%);
    color: white; padding: 2.5rem 1.5rem;
    border: none; text-align: center;
}
body.is-onboarding .modal-header h2 {
    font-size: 1.8rem; font-weight: 800; color: white;
}
body.is-onboarding .controls-container {
    background: white; padding: 1.5rem 2rem;
    border-bottom: 1px solid #e9ecef;
}
body.is-onboarding .search-input {
    height: 50px; font-size: 1.1rem;
    border-radius: 12px; background-color: #f8f9fa;
}
body.is-onboarding .search-input:focus {
    background-color: white; border-color: #0d6efd;
    box-shadow: 0 0 0 4px rgba(13,110,253,0.15);
}

body.is-onboarding .courses-table-container,
body.is-onboarding .modal-body {
    flex-grow: 1; overflow-y: auto;
    padding: 0; background-color: #f4f7fa;
}
body.is-onboarding .courses-table thead { display: none; }
body.is-onboarding .courses-table tbody {
    display: flex; flex-direction: column;
    gap: 10px; padding: 20px;
}
body.is-onboarding .courses-table tr {
    display: flex; align-items: center; justify-content: space-between;
    background: white; border: 1px solid #e9ecef;
    border-radius: 12px; padding: 18px 20px;
    cursor: pointer; transition: transform 0.1s, box-shadow 0.1s;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}
body.is-onboarding .courses-table tr:hover {
    border-color: #0d6efd; transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(13,110,253,0.1);
}
body.is-onboarding .courses-table td {
    border: none; padding: 0;
}
body.is-onboarding .courses-table td:first-child {
    font-size: 1.1rem; font-weight: 700; color: #212529;
}
body.is-onboarding .courses-table td:last-child {
    background-color: #e9ecef; padding: 5px 10px;
    border-radius: 6px; font-size: 0.85rem;
    color: #495057; font-weight: 600;
}

/* ===== Footer ===== */
.site-footer-bottom {
    text-align: center; padding: 24px; margin-top: 30px;
    font-size: 14px; color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
}
.site-footer-bottom a {
    color: var(--text-primary); font-weight: 700;
    text-decoration: none; transition: color 0.2s;
}
.site-footer-bottom a:hover {
    color: var(--primary-color); text-decoration: underline;
}

/* ===== Skeleton / Loading ===== */
.skeleton-loading {
    text-align: center; padding: 60px 20px;
    color: var(--text-secondary); font-size: 16px;
}
.skeleton-loading .spinner {
    width: 40px; height: 40px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== No Major State ===== */
.no-major-state {
    text-align: center; padding: 80px 20px;
    color: var(--text-secondary);
}
.no-major-state svg { color: #ced4da; margin-bottom: 16px; }
.no-major-state h3 { font-size: 20px; color: var(--text-primary); margin-bottom: 8px; }
.no-major-state p { font-size: 15px; }
/* ===== Tau Factor Link ===== */
.tau-factor-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    transition: color 0.2s, transform 0.2s;
    text-decoration: none;
}
.tau-factor-link:hover {
    color: #0b5ed7;
    transform: scale(1.15);
}
.tau-factor-link svg {
    width: 20px;
    height: 20px;
}

/* ===== Semester cell in selector ===== */
.semester-cell {
    font-size: 12px;
    color: var(--text-secondary);
    max-width: 180px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ============================================= */
/* ===== RESPONSIVE                               */
/* ============================================= */

.mobile-courses-list { display: none; }

@media (max-width: 1280px) {
    .desktop-only { display: none !important; }
    .mobile-courses-list {
        display: flex; flex-direction: column;
        gap: 16px; padding: 16px;
    }

    .course-card {
        display: flex; flex-direction: column;
        border-radius: 10px; background-color: var(--bg-surface);
        box-shadow: 0 4px 15px rgba(0,0,0,0.06);
        border: 1px solid var(--border-color);
        border-right: 4px solid transparent;
    }

    .course-card.cat-mandatory { border-right-color: var(--side-color-mandatory); }
    .course-card.cat-choice { border-right-color: var(--side-color-choice); }
    .course-card.cat-lab { border-right-color: var(--side-color-lab); }
    .course-card.cat-spirit { border-right-color: var(--side-color-spirit); }
    .course-card.cat-seminar { border-right-color: var(--side-color-seminar); }
    .course-card.cat-workshop { border-right-color: var(--side-color-workshop); }
    .course-card.cat-project { border-right-color: var(--side-color-project); }
    .course-card.cat-english { border-right-color: var(--side-color-english); }
    .course-card.cat-other { border-right-color: var(--side-color-other); }

    .card-top {
        display: flex; gap: 12px; align-items: center;
        padding: 12px 16px;
        border-bottom: 1px solid var(--border-color);
    }
    .card-top .course-info { flex-grow: 1; }
    .card-top .drag-handle { cursor: grab; color: #ced4da; }
    .card-top .drag-handle:active { cursor: grabbing; }

    .card-body { padding: 16px; }

    .card-stats {
        display: grid; grid-template-columns: repeat(2, 1fr);
        gap: 16px; font-size: 14px;
    }

    .stat-item .label { font-size: 12px; color: var(--text-secondary); }
    .stat-item .value { font-weight: 700; color: var(--text-primary); }
    .stat-item.stat-wide { grid-column: 1 / -1; }

    .card-actions {
        display: flex; justify-content: flex-end;
        align-items: center; padding: 12px 16px;
        border-top: 1px solid var(--border-color);
    }

    .card-grade-input {
        width: 70px; padding: 6px 10px;
        border: 1px solid var(--border-color); border-radius: 6px;
        text-align: center; font-family: inherit;
        font-size: 14px; font-weight: 600;
    }

    /* Selector table also compacts */
    .selector-table th:nth-child(4),
    .selector-table td:nth-child(4),
    .selector-table th:nth-child(5),
    .selector-table td:nth-child(5) {
        display: none;
    }
}

@media (max-width: 768px) {
    body {
        padding-top: var(--header-height);
    }

    .content-wrapper {
        flex-direction: column; height: auto;
    }

    .summary, .main {
        overflow: visible; max-height: none;
    }

    .summary {
        flex: 0 0 auto; order: 1;
        border-left: none; border-right: none;
        border-bottom: 1px solid var(--border-light);
    }

    .main { order: 2; padding: 15px; }

        .total-progress-card {
        position: sticky;
        top: var(--header-height);
        z-index: 100;
        box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    }

    body.simulation-mode .total-progress-card {
        top: calc(var(--header-height) + 44px);
    }

    .header-container {
        gap: 12px;
    }

    .major-input { padding: 10px 20px; font-size: 14px; }
    .logo span { display: none; }
    
    .modal-content {
        width: 100%; height: 100%;
        max-height: 100%; border-radius: 0;
    }

    body.is-onboarding .modal-content {
        width: 100%; height: 100%;
        max-height: none; border-radius: 0;
    }
    body.is-onboarding .modal-header { padding: 2rem 1.5rem; }
    body.is-onboarding .modal-header h2 { font-size: 1.5rem; }
    body.is-onboarding .controls-container { padding: 1rem 1.5rem; }
    body.is-onboarding .courses-table tbody { padding: 15px; }

    .simulation-banner { flex-direction: column; gap: 8px; padding: 12px; }


    /* Hide some selector columns on mobile */
    .selector-table th:nth-child(4),
    .selector-table td:nth-child(4),
    .selector-table th:nth-child(5),
    .selector-table td:nth-child(5),
    .selector-table th:nth-child(6),
    .selector-table td:nth-child(6),
    .selector-table th:nth-child(7),
    .selector-table td:nth-child(7) {
        display: none;
    }
}

@media (max-width: 480px) {
    .header-container { padding: 0 10px; gap: 8px; }
    h1, h2, h3 { font-size: 18px; }
    .semester-header { padding: 16px; }
    .semester-footer { padding: 12px 16px; flex-wrap: wrap; gap: 10px; }

    .selector-table th,
    .selector-table td { padding: 10px 8px; font-size: 13px; }

    /* On very small screens, hide even more selector columns */
    .selector-table th:nth-child(3),
    .selector-table td:nth-child(3) { display: none; }
}

/* ===== Number input spinner hide ===== */
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none; margin: 0;
}
input[type="number"] { -moz-appearance: textfield; }

/* ===== Average Slider ===== */
.selector-filter-avg {
    min-width: 160px;
}

.avg-slider-value {
    display: block;
    font-size: 16px;
    font-weight: 800;
    color: var(--primary-color);
    text-align: left;
    margin-bottom: 2px;
}

.avg-slider-input {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--border-color);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}

.avg-slider-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 1px 4px rgba(0,0,0,0.25);
}

.avg-slider-input::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 1px 4px rgba(0,0,0,0.25);
}

.english-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    background: transparent;
    color: var(--border-color);
    font-size: 12px;
    font-weight: 800;
    cursor: pointer;
    user-select: none;
    transition: all 0.2s;
    line-height: 1;
}

.english-toggle:hover {
    border-color: var(--side-color-english);
    color: var(--side-color-english);
}

.english-toggle.active {
    background: var(--cat-english-bg);
    border-color: var(--side-color-english);
    color: var(--side-color-english);
}
.done-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    background: transparent;
    color: var(--border-color);
    font-size: 16px;
    font-weight: 800;
    cursor: pointer;
    user-select: none;
    transition: all 0.2s;
    line-height: 1;
}

.done-toggle:hover {
    border-color: var(--progress-done-bg);
    color: var(--progress-done-bg);
}

.done-toggle.active {
    background: var(--card-green-bg);
    border-color: var(--progress-done-bg);
    color: var(--progress-done-bg);
}