:root {
    --bg-body: #f8fafc;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;

    --border-color: #e2e8f0;
    --input-bg: #f1f5f9;
    --input-border: #cbd5e1;

    --primary-color: #3b82f6;
    /* Blue 500 */
    --primary-hover: #2563eb;
    /* Blue 600 */
    --primary-light: #eff6ff;

    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;

    /* Çok hafif gölgeler (profesyonel, yumuşak) */
    --shadow-sm: 0 1px 2px rgb(15 23 42 / 0.04);
    --shadow-md: 0 1px 3px rgb(15 23 42 / 0.06), 0 1px 2px rgb(15 23 42 / 0.04);
    --shadow-lg: 0 4px 16px rgb(15 23 42 / 0.08);

    /* Dengeli yuvarlaklık ölçeği (aşırı pill yok) */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    /* Başlık rengi (koyu slate) + ince yüzey/hover tonu */
    --text-heading: #0f172a;
    --hover-bg: #f1f5f9;

    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

[data-theme="dark"] {
    /* "Second Photo" Theme - Deep Midnight Navy */
    --bg-body: #0b0f19;
    /* Very deep navy, almost black */
    --bg-card: #111827;
    /* Dark grayish navy */

    /* Text - Softer White to avoid harshness */
    --text-primary: #e2e8f0;
    /* Slate 200 - Soft White */
    --text-secondary: #94a3b8;
    /* Slate 400 */
    --text-muted: #64748b;
    /* Slate 500 */

    --border-color: #1f2937;
    /* Gray 800 */
    --input-bg: #1f2937;
    --input-border: #374151;

    /* Accents - Retain the vibrant blue but maybe slightly adjusted */
    --primary-color: #3b82f6;
    --primary-hover: #60a5fa;
    --primary-light: rgba(59, 130, 246, 0.1);
    --text-heading: #f1f5f9;
    --hover-bg: #1f2937;

    --success-color: #34d399;
    --warning-color: #fbbf24;
    --danger-color: #f87171;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
}

/* Dark Mode Component Overrides */
[data-theme="dark"] .upload-zone {
    background-color: #111827;
    /* Dark navy */
    border-color: #374151;
    /* Gray 700 */
}

[data-theme="dark"] .upload-zone:hover {
    background-color: #1f2937;
    border-color: #3b82f6;
}

[data-theme="dark"] .cloud-icon {
    background-color: #1f2937;
    color: #3b82f6;
    box-shadow: none;
}

[data-theme="dark"] .upload-content h3 {
    color: #e2e8f0;
}

[data-theme="dark"] .upload-content p {
    color: #94a3b8;
}

[data-theme="dark"] #manual-entry-btn {
    color: #cbd5e1;
    border-color: #4b5563;
}

[data-theme="dark"] #manual-entry-btn:hover {
    color: #f8fafc;
    border-color: #cbd5e1;
    background: #1f2937;
}

[data-theme="dark"] .app-header h1 {
    color: #f1f5f9;
}

/* Dark Mode Table Overrides */
[data-theme="dark"] .table-wrapper {
    border-color: #1f2937;
    background: #111827;
    /* Dark grayish navy */
}

[data-theme="dark"] .course-table {
    background: #111827;
    color: #e2e8f0;
}

[data-theme="dark"] .course-table thead {
    background: #0b0f19;
    /* Darker header */
    border-bottom: 1px solid #1f2937;
}

[data-theme="dark"] .course-table th {
    color: #94a3b8;
}

[data-theme="dark"] .course-table td {
    border-bottom: 1px solid #1f2937;
    color: #e2e8f0;
}

[data-theme="dark"] .course-table tr:hover {
    background-color: #1f2937;
}

[data-theme="dark"] .table-input {
    color: #e2e8f0;
}

[data-theme="dark"] .table-input:hover {
    background: #1f2937;
}

[data-theme="dark"] .table-input:focus {
    background: #0b0f19;
    border-color: #3b82f6;
}

[data-theme="dark"] .grade-select {
    background-color: #1f2937;
    color: #e2e8f0;
    border-color: #374151;
}

[data-theme="dark"] .semester-header td {
    background: #0f172a !important;
    /* Specific override for semester headers */
    border-color: #1f2937 !important;
    color: #e2e8f0 !important;
}

[data-theme="dark"] .semester-header span {
    color: #e2e8f0 !important;
}

[data-theme="dark"] .semester-header i {
    color: #3b82f6 !important;
}

[data-theme="dark"] .tab-switcher {
    background: transparent;
    border: none;
    border-bottom: 1px solid #1f2937;
}

[data-theme="dark"] #theme-toggle-btn {
    background: #1f2937 !important;
    color: #e2e8f0;
    border: 1px solid #374151;
}

[data-theme="dark"] #theme-toggle-btn:hover {
    background: #374151 !important;
    color: #f59e0b;
    /* Sun color on hover */
}

/* Ensure manual entry button is not glaring white if it isn't already handled */
[data-theme="dark"] #manual-entry-btn {
    background-color: transparent;
    color: #94a3b8;
    border-color: #374151;
}

[data-theme="dark"] #manual-entry-btn:hover {
    background-color: #1f2937;
    color: #f8fafc;
    border-color: #64748b;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-family);
    -webkit-font-smoothing: antialiased;
}

body {
    background-color: var(--bg-body);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.main-container {
    background-color: var(--bg-card);
    width: 100%;
    max-width: 1000px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
}

/* Header */

.app-header {
    margin-bottom: 1.75rem;
}

.app-header__bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand__text h1 {
    margin: 0;
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.15;
    color: var(--text-heading);
}

.brand__subtitle {
    margin: 2px 0 0;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.app-header__actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Header: ikincil ghost link (Topluluğa katıl) */
.btn-pill-ghost {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.85rem;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    text-decoration: none;
    cursor: pointer;
    transition: color .15s, border-color .15s, background .15s;
}

.btn-pill-ghost:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background: var(--primary-light);
}

/* Header: kare ikon butonu (tema) */
.btn-icon-square {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: color .15s, border-color .15s, background .15s;
}

.btn-icon-square:hover {
    color: var(--text-primary);
    background: var(--hover-bg);
}

.brand-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.app-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    color: white;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
}

.app-header h1 {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: #1e293b;
}

/* Reset Button (Aesthetic) */
.btn-reset {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 0.9rem;
    border-radius: var(--radius-md);
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: color .15s, border-color .15s, background .15s;
}

.btn-reset:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-reset:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: var(--primary-light);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.15);
    transform: translateY(-2px);
}

.btn-reset i {
    font-size: 0.9em;
}

.hidden {
    display: none !important;
}

/* Upload Zone */
.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    background-color: #f8fafc;
    padding: 4rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-bottom: 2rem;
}

.upload-zone:hover,
.upload-zone.dragover {
    background-color: var(--primary-light);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.cloud-icon {
    background-color: white;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    box-shadow: var(--shadow-sm);
    color: var(--primary-color);
    font-size: 1.75rem;
}

.upload-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #334155;
}

.upload-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Progress Section */
/* ===== Özet kartları (dashboard) ===== */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.stat-card {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    padding: 1rem 1.1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.stat-card--accent {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.stat-card__label {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.stat-card__value {
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1;
    color: var(--text-heading);
    font-variant-numeric: tabular-nums;
}

.stat-card__meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* ===== Kontrol + ilerleme paneli ===== */
.dash-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.dash-panel__controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
}

/* Segmented control: AKTS / UK */
.mode-toggle-group {
    display: inline-flex;
    padding: 3px;
    background: var(--hover-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.btn-mode {
    border: none;
    background: transparent;
    padding: 0.4rem 0.95rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: calc(var(--radius-md) - 3px);
    transition: color .15s, background .15s;
}

.btn-mode.active {
    background: var(--bg-card);
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.progress-section {
    margin: 0;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.progress-bar-bg {
    width: 100%;
    height: 12px;
    background-color: #e2e8f0;
    border-radius: 6px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--primary-color);
    border-radius: 6px;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* GNO Display */
.gno-display {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.gno-display h2 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Quick Upload Button (Floating near GNO) */
/* Quick Upload Button (Floating near GNO) */
.btn-quick-upload {
    background-color: #eff6ff;
    /* Light Blue */
    border: none;
    color: var(--primary-color);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.15);
}

.btn-quick-upload:hover {
    background-color: #dbeafe;
    color: var(--primary-hover);
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
}

.btn-quick-upload i {
    font-size: 1.4rem;
}

.gno-value {
    font-size: 1.9rem;
    font-weight: 700;
    line-height: 1;
    color: var(--text-heading);
    letter-spacing: -0.02em;
    font-variant-numeric: tabular-nums;
    transition: color 0.3s;
}

/* Actions */
.actions-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.filter-group {
    background: var(--hover-bg);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.btn-primary-solid {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary-solid:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn-outline-primary {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--primary-light);
}

.btn-outline-secondary {
    border-color: var(--border-color);
    color: var(--text-secondary);
    background: white;
}

.btn-outline-secondary:hover {
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

.secondary-actions {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 1rem;
}

/* Table */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.course-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

.course-table thead {
    background: #f8fafc;
    border-bottom: 1px solid var(--border-color);
}

.course-table th {
    text-align: left;
    padding: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.course-table td {
    padding: 0.55rem 0.85rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    vertical-align: middle;
}

.course-table tr:last-child td {
    border-bottom: none;
}

.course-table tr:hover {
    background-color: #f8fafc;
}

/* Inputs in Table */
.table-input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid transparent;
    background: transparent;
    border-radius: 4px;
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: all 0.2s;
}

.table-input:hover {
    background: #f1f5f9;
}

.table-input:focus {
    background: white;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px var(--primary-light);
    outline: none;
}

/* Grade Select */
.grade-select {
    padding: 0.4rem 0.55rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--input-border);
    background-color: var(--bg-card);
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-primary);
    cursor: pointer;
    min-width: 72px;
    outline: none;
    transition: border-color .15s, box-shadow .15s;
}

.grade-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

/* ===== Ders tablosu toolbar ===== */
.table-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.table-toolbar__title {
    margin: 0;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-heading);
}

.table-toolbar__actions {
    display: flex;
    gap: 0.5rem;
}

/* ===== Dönem section header (tablo içi) ===== */
.course-table td.semester-header__cell {
    background: var(--hover-bg);
    padding: 0.7rem 1rem;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.semester-header__row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem 1rem;
    flex-wrap: wrap;
}

.semester-header__title {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text-heading);
}

.semester-header__title i {
    color: var(--primary-color);
}

.semester-header__stats {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.sem-stat {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.sem-stat__label {
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
}

.sem-stat strong {
    color: var(--text-heading);
    font-variant-numeric: tabular-nums;
}

/* ===== Analiz: insight kartları ===== */
.insight-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.insight-card {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    padding: 1rem 1.1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.insight-card__label {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
}

.insight-card__label i {
    color: var(--primary-color);
}

.insight-card__value {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--text-heading);
    font-variant-numeric: tabular-nums;
}

.insight-card__meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* ===== Analiz: grafik kartları ===== */
.chart-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
}

.chart-card__title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin: 0 0 1rem;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-heading);
}

.chart-card__title i {
    color: var(--primary-color);
}

.chart-card__canvas {
    position: relative;
    height: 260px;
}

@media (max-width: 640px) {
    .insight-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .chart-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== Yan panel kartları ===== */
.side-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.1rem;
    margin-bottom: 1rem;
}

.side-card:last-child {
    margin-bottom: 0;
}

/* info-card kendi iç padding'ini (header/body) yönetir + hafif gölge */
.side-card.info-card {
    padding: 0;
    box-shadow: var(--shadow-sm);
}

.side-card__title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0 0 0.85rem;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-heading);
}

.side-card__title i {
    color: var(--primary-color);
}

/* Canlı mini özet */
.side-summary__label {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.side-summary__value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
    margin-top: 0.15rem;
    font-variant-numeric: tabular-nums;
}

.side-summary__progress {
    margin-top: 1rem;
}

.side-summary__progress-head {
    display: flex;
    justify-content: space-between;
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
}

.side-summary__progress-head strong {
    color: var(--text-heading);
}

/* Yan panel linkleri */
.side-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 0.7rem;
    margin-bottom: 0.4rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: color .15s, border-color .15s, background .15s;
}

.side-link:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.side-link--primary {
    color: white;
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.side-link--primary:hover {
    color: white;
    background: var(--primary-hover);
    border-color: var(--primary-hover);
}

.side-contributors {
    margin-top: 0.75rem;
    font-size: 0.78rem;
    color: var(--text-muted);
    line-height: 1.7;
}

.side-contributors a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
}

.side-contributors a:hover {
    color: var(--primary-color);
}

/* ==========================================================
   MOBİL: Ders tablosunu KART görünümüne çevir
   Telefonda 6 sütunlu tablo taşıyordu; her satırı bir karta
   dönüştürüyoruz. thead gizlenir, her hücre data-label ile
   "etiket: değer" satırı olur. (Tablo semantiği korunur.)
   ========================================================== */
@media (max-width: 640px) {
    /* Başlık satırı gizli — etiketleri her kart kendi taşır */
    .course-table thead {
        display: none;
    }

    /* Masaüstündeki yatay scroll'u mobilde kapat */
    .table-wrapper {
        overflow-x: visible;
    }

    .course-table,
    .course-table tbody {
        display: block;
        width: 100%;
    }

    /* Her ders satırı = bir kart.
       flex-column yapıyoruz ki alanları `order` ile gerçek bir
       hiyerarşiye sokabilelim (Ders Adı başa, Not öne çıksın). */
    .course-table tr.course-row {
        display: flex;
        flex-direction: column;
        background: var(--bg-card); /* light: beyaz, dark: #111827 — tema uyumlu */
        border: 1px solid var(--border-color);
        border-radius: 14px;
        padding: 0.9rem 1rem;
        margin-bottom: 0.85rem;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    }

    /* Her hücre = "etiket  ----  değer" satırı */
    .course-table tr.course-row td {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 0.75rem;
        padding: 0.45rem 0;
        border-bottom: 1px solid #f1f5f9;
    }

    .course-table tr.course-row td:last-child {
        border-bottom: none;
    }

    /* Etiket: hücrenin data-label attribute'undan üretilir */
    .course-table tr.course-row td::before {
        content: attr(data-label);
        font-size: 0.7rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.04em;
        color: var(--text-muted);
        flex-shrink: 0;
    }

    /* Inputlar/select satırın sağını doldursun, sağa yaslı */
    .course-table tr.course-row td .table-input,
    .course-table tr.course-row td .grade-select {
        flex: 1;
        min-width: 0;
        text-align: right;
    }

    /* Dönem başlığı: kartların üstünde tam genişlik bant */
    .course-table tr.semester-header,
    .course-table tr.semester-header td {
        display: block;
        width: 100%;
    }

    /* ===== Görsel hiyerarşi (flex `order` ile yeniden sıralama) ===== */

    /* DERS ADI = kartın başlığı: en üstte, büyük, kalın, sola yaslı, etiketsiz */
    .course-table tr.course-row td[data-label="Ders Adı"] {
        order: -2;
        border-bottom: none;
        padding-bottom: 0.15rem;
    }
    .course-table tr.course-row td[data-label="Ders Adı"]::before {
        display: none;
    }
    .course-table tr.course-row td[data-label="Ders Adı"] .table-input {
        text-align: left;
        font-size: 1.05rem;
        font-weight: 700;
        color: var(--text-primary);
        padding-left: 0;
    }

    /* DERS KODU = alt başlık: hemen altta, renkli, küçük; kartın "kimliği" */
    .course-table tr.course-row td[data-label="Ders Kodu"] {
        order: -1;
        padding-top: 0;
        padding-bottom: 0.7rem;
        margin-bottom: 0.35rem;
        border-bottom: 2px solid #f1f5f9;
        flex-wrap: wrap;
    }
    .course-table tr.course-row td[data-label="Ders Kodu"]::before {
        display: none;
    }
    .course-table tr.course-row td[data-label="Ders Kodu"] .table-input {
        text-align: left;
        font-size: 0.85rem;
        font-weight: 700;
        letter-spacing: 0.03em;
        color: var(--primary-color);
        padding-left: 0;
        flex: 0 1 auto;
    }

    /* Geri kalan alanların sırası: AKTS → Not → Hesaba kat → İşlem */
    .course-table tr.course-row td[data-label="AKTS"],
    .course-table tr.course-row td[data-label="UK"] { order: 1; }
    .course-table tr.course-row td[data-label="Harf Notu"] { order: 2; }
    .course-table tr.course-row td[data-label="Hesaba kat"] { order: 3; }
    .course-table tr.course-row td[data-label="İşlem"] {
        order: 4;
        border-bottom: none;
    }

    /* HARF NOTU = mobilde en çok dokunulan alan (simülasyon) →
       büyük, parmak dostu hedef. 44px = Apple'ın önerdiği minimum. */
    .course-table tr.course-row td[data-label="Harf Notu"] .grade-select {
        flex: 0 0 auto;
        min-width: 104px;
        min-height: 44px;
        font-size: 1.05rem;
        font-weight: 700;
        text-align: center;
        text-align-last: center;
        border-radius: 10px;
        border: 1.5px solid var(--primary-color);
        color: var(--primary-color);
        background-color: var(--primary-light);
    }

    /* İşlem butonları ve checkbox da parmak dostu boyutta */
    .course-table tr.course-row td[data-label="İşlem"] .btn-icon {
        min-width: 44px;
        min-height: 44px;
        font-size: 1.05rem;
    }
    .course-table tr.course-row td[data-label="Hesaba kat"] input[type="checkbox"] {
        width: 20px;
        height: 20px;
    }

    /* Dark mode: kart içi ayraçları koyulaştır (açık çizgiler sırıtmasın) */
    [data-theme="dark"] .course-table tr.course-row td,
    [data-theme="dark"] .course-table tr.course-row td[data-label="Ders Kodu"] {
        border-bottom-color: #1f2937;
    }

}

/* Delete Button */
.btn-icon {
    padding: 0.45rem 0.5rem;
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    border: none;
    background: transparent;
    cursor: pointer;
    transition: color .15s, background .15s;
}

.btn-icon:hover {
    color: var(--danger-color);
    background: var(--hover-bg);
}

.btn-icon:hover {
    color: var(--danger-color);
    background: #fef2f2;
}

/* Hidden Utility */
.hidden {
    display: none !important;
}

/* Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.course-row {
    animation: fadeIn 0.3s ease-out forwards;
}

/* Status Colors for GNO */
.text-success {
    color: var(--success-color) !important;
}

.text-warning {
    color: var(--warning-color) !important;
}

.text-danger {
    color: var(--danger-color) !important;
}

/* Footer Styles */
.app-footer {
    width: 100%;
    margin-top: 40px;
    padding: 30px 20px;
    background: #f8fafc;
    border-top: 1px solid #e2e8f0;
    text-align: center;
}

.footer-content p {
    color: #64748b;
    font-size: 0.85rem;
    margin: 5px 0;
}

.footer-content a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.footer-content a:hover {
    text-decoration: underline;
}

.footer-note {
    font-style: italic;
    opacity: 0.8;
}

/* Dark Mode Footer */
body.dark-mode .app-footer {
    background: #0f172a;
    border-top-color: #1e293b;
}

body.dark-mode .footer-content p {
    color: #94a3b8;
}

/* Responsive */
@media (max-width: 640px) {
    .main-container {
        padding: 1.5rem;
    }

    .gno-value {
        font-size: 1.7rem;
    }

    /* Özet kartları: telefonda 2 sütun */
    .stat-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-card__value {
        font-size: 1.4rem;
    }

    .mobile-hide {
        display: none;
    }


    /* Sekme paneli (Hesaplayıcı/Analiz/Mezuniyet/Toollar):
       Mobilde container'a sığdır ki taşan sekmeler panelin İÇİNDE
       kalsın ve parmakla yatay kaydırılabilsin (yoksa main-container
       overflow:hidden onları kırpıyordu). */
    .tab-switcher {
        width: 100%;
        justify-content: flex-start;
        scrollbar-width: none;          /* Firefox: scrollbar gizle */
        scroll-snap-type: x proximity;  /* sekmeler kenara yapışsın */
    }
    .tab-switcher::-webkit-scrollbar {
        display: none;                  /* Safari/Chrome: scrollbar gizle */
    }
    .tab-btn {
        flex-shrink: 0;                 /* butonlar sıkışmasın → gerçek taşma → kaydırma */
        scroll-snap-align: start;
    }
}

/* Simulation Mode */
.simulation-active .table-input,
.simulation-active .grade-select {
    border-color: var(--primary-color);
    background-color: #f0f9ff;
}

.simulation-active .table-input:focus,
.simulation-active .grade-select:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* Change button to Warning color when active (Reset state) */
.simulation-active #simulation-btn {
    background-color: var(--warning-color);
    color: white;
    border-color: var(--warning-color);
}

.simulation-active #simulation-btn:hover {
    background-color: #d97706;
}

.simulation-active #simulation-btn i {
    transform: rotate(180deg);
    transition: transform 0.3s;
}

/* Print Styles */
@media print {
    @page {
        margin: 1cm;
        size: A4;
    }

    body {
        background-color: white;
        padding: 0;
        color: black;
    }

    .main-container {
        box-shadow: none;
        max-width: 100%;
        padding: 0;
        border: none;
    }

    /* Hide non-printable elements */
    .app-header,
    .upload-zone,
    .actions-toolbar,
    .secondary-actions,
    .btn-icon,
    #reset-app-btn,
    .target-simulation-section,
    .progress-section {
        display: none !important;
    }

    /* Make simulation section visible if it was open? 
       Actually user might want to print the result. 
       Let's keep simulation result visible if it has content, but hide the inputs.
    */
    /* Custom Override: If we want to print the simulation plan */
    /* For now, just print the table and GNO. */

    .gno-display {
        margin-bottom: 20px;
        page-break-after: avoid;
    }

    .gno-value {
        font-size: 3rem;
        -webkit-text-fill-color: black;
        background: none;
        color: black;
    }

    /* Table Styling for Print */
    .table-wrapper {
        border: 1px solid #000;
        box-shadow: none;
    }

    .course-table th {
        color: black;
        border-bottom: 2px solid black;
        background: #eee !important;
    }

    .course-table td {
        border-bottom: 1px solid #ccc;
        color: black;
    }

    /* Inputs as Text */
    .table-input,
    .grade-select {
        border: none;
        background: transparent !important;
        padding: 0;
        width: auto;
        color: black;
        font-weight: 500;
        -webkit-appearance: none;
        appearance: none;
    }

    /* Hide specific columns if needed? No, user wants data. 
       Maybe hide the 'Delete/Actions' column (last child)
    */
    .course-table th:last-child,
    .course-table td:last-child {
        display: none;
    }

    /* Sim Checkbox Column */
    .course-table th:first-child,
    .course-table td:first-child {
        display: none;
    }

    /* Ensure table fits */
    .course-table {
        font-size: 11px;
    }

    .grade-scale-print-container {
        display: block;
        margin-top: 2rem;
        border-top: 1px solid #ddd;
        padding-top: 1rem;
        page-break-inside: avoid;
    }

    .grade-scale-print-container h3 {
        font-size: 1rem;
        margin-bottom: 0.5rem;
        color: #333;
    }

    .grade-scale-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
        gap: 0.5rem;
        font-size: 0.8rem;
        color: #555;
    }

    .grade-scale-item {
        background: #f9f9f9;
        padding: 4px 8px;
        border-radius: 4px;
        border: 1px solid #eee;
        text-align: center;
    }
}

/* Tab Switcher & Views */
/* Navigasyon: minimal underline tab bar (dolgulu pill yerine) */
.tab-switcher {
    display: flex;
    gap: 0.25rem;
    margin-top: 1.25rem;
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tab-btn {
    border: none;
    background: transparent;
    padding: 0.7rem 0.95rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: color .15s ease, border-color .15s ease;
}

/* Tutarlı ikon boyutu */
.tab-btn i {
    font-size: 0.95rem;
    width: 1.05em;
    text-align: center;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--primary-color);
    font-weight: 600;
    border-bottom-color: var(--primary-color);
}

.app-view {
    display: none;
    width: 100%;
}

.app-view.active {
    display: block;
    animation: fadeInView 0.3s ease;
}


@keyframes fadeInView {
    from {
        opacity: 0;
        transform: translateY(5px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Footer Styles */
.app-footer a:hover {
    color: var(--primary-color) !important;
}

.contributors-container:hover .contributors-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.contributors-dropdown {
    position: absolute;
    bottom: 140%;
    right: 0;
    min-width: 200px;
    background: white;
    padding: 10px;
    border-radius: 12px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    gap: 5px;
    z-index: 100;
}

/* Little arrow for the popup */
.contributors-dropdown::after {
    content: '';
    position: absolute;
    bottom: -6px;
    right: 30px;
    width: 12px;
    height: 12px;
    background: white;
    transform: rotate(45deg);
    border-bottom: 1px solid #e2e8f0;
    border-right: 1px solid #e2e8f0;
}

.contributor-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 8px;
    text-decoration: none;
    color: #475569 !important;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.contributor-link:hover {
    background: #f1f5f9;
    color: #0077b5 !important;
    /* LinkedIn Blue */
}

.contributor-link i {
    font-size: 1.1rem;
    color: #94a3b8;
    transition: color 0.2s;
}

.contributor-link:hover i {
    color: #0077b5;
}

/* Dark Mode Footer */
[data-theme="dark"] .app-footer {
    border-color: #1f2937 !important;
    color: #94a3b1 !important;
}

[data-theme="dark"] .app-footer a {
    color: #cbd5e1 !important;
}

[data-theme="dark"] .app-footer a:hover {
    color: #60a5fa !important;
}

[data-theme="dark"] .contributors-dropdown {
    background: #1f2937;
    border-color: #374151;
}

[data-theme="dark"] .contributors-dropdown::after {
    background: #1f2937;
    border-color: #374151;
}

[data-theme="dark"] .contributor-link {
    color: #cbd5e1 !important;
}

[data-theme="dark"] .contributor-link:hover {
    background: #374151;
    color: #60a5fa !important;
}

[data-theme="dark"] .made-with span {
    color: #e2e8f0 !important;
    border-color: #475569 !important;
}

/* Footer Styles */
.app-footer-bar {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.github-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.github-link:hover {
    color: #181717;
    /* GitHub color */
}

/* Dark mode GitHub hover */
[data-theme="dark"] .github-link:hover {
    color: white;
}

.contributors {
    display: flex;
    align-items: center;
    gap: 5px;
}

.heart-icon-container {
    position: relative;
    cursor: pointer;
    font-size: 1.1rem;
    display: inline-block;
    transition: transform 0.2s;
}

.heart-icon-container:hover {
    transform: scale(1.1);
}

/* Tooltip/Popover */
.contributors-tooltip {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    bottom: 140%;
    /* Show above */
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: white;
    padding: 10px;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    min-width: 160px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
}

/* Arrow */
.contributors-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -6px;
    border-width: 6px;
    border-style: solid;
    border-color: white transparent transparent transparent;
}

[data-theme="dark"] .contributors-tooltip {
    background: #1f2937;
    border-color: #374151;
}

[data-theme="dark"] .contributors-tooltip::after {
    border-color: #1f2937 transparent transparent transparent;
}

.heart-icon-container:hover .contributors-tooltip,
.heart-icon-container:focus-within .contributors-tooltip {
    visibility: visible;
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.contributors-tooltip a {
    text-decoration: none;
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 500;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background 0.2s, color 0.2s;
    display: block;
    text-align: center;
}

.contributors-tooltip a:hover {
    background: #f1f5f9;
    color: var(--primary-color);
}

[data-theme="dark"] .contributors-tooltip a:hover {
    background: #374151;
}

.info-header {
    background: var(--primary-color);
    color: white;
    padding: 12px 16px;
    font-weight: 700;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 10px;
    justify-content: space-between; /* To push close button to right */
}

.info-close-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.8rem;
}

.info-close-btn:hover {
    background: rgba(255, 255, 255, 0.4);
    transform: scale(1.1);
}

.info-card.hidden {
    display: none;
}
/* ========== UI Reorganization Styles ========== */

.gpa-settings-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    margin-top: 1rem;
    padding: 0.4rem 1rem;
    background: rgba(241, 245, 249, 0.6);
    border-radius: 9999px;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
    border: 1px solid rgba(226, 232, 240, 0.8);
    backdrop-filter: blur(4px);
}

[data-theme="dark"] .gpa-settings-bar {
    background: rgba(31, 41, 55, 0.6);
    border-color: rgba(55, 65, 81, 0.8);
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.btn-future {
    border: 1px solid var(--border-color) !important;
    color: var(--text-secondary) !important;
    background: var(--bg-card) !important;
}

[data-theme="dark"] .btn-future {
    background: transparent !important;
}

.btn-future:hover {
    background: var(--hover-bg) !important;
    border-color: var(--primary-color) !important;
    color: var(--primary-color) !important;
}

.btn-share {
    background-color: var(--primary-color) !important;
    border: none !important;
    color: white !important;
}

.btn-share:hover {
    background-color: #0284c7 !important;
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3) !important;
    transform: translateY(-1px);
}

/* Premium Dropdown Menu */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: 0.5rem;
    background-color: var(--bg-card);
    min-width: 180px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    z-index: 1000;
    padding: 0.5rem 0;
    overflow: hidden;
    animation: slideDown 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown-content button {
    width: 100%;
    padding: 0.7rem 1.2rem;
    border: none;
    background: none;
    text-align: left;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.dropdown-content button i {
    font-size: 1rem;
    color: var(--text-secondary);
}

.dropdown-content button:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.dropdown-content button:hover i {
    color: var(--primary-color);
}

[data-theme="dark"] .dropdown-content button:hover {
    background-color: #1e293b;
    color: #60a5fa;
}

[data-theme="dark"] .dropdown-content button:hover i {
    color: #60a5fa;
}

/* Adjustments for the new toolbar */
.actions-toolbar {
    padding-top: 0.5rem;
    padding-bottom: 2rem;
    border-bottom: none; /* Removed the line to make it cleaner */
}

/* ===== Hesaplayıcı panelleri (Simülasyon / Planlayıcı) ===== */
.calc-panel {
    margin-top: 1.25rem;
    padding: 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    flex-direction: column;
    gap: 1rem;
}

.calc-panel--planner {
    border-left: 3px solid var(--primary-color);
}

.calc-panel__title {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-heading);
}

.calc-panel__title i {
    color: var(--primary-color);
}

.calc-panel__row {
    display: flex;
    gap: 0.75rem;
    align-items: flex-end;
    flex-wrap: wrap;
}

.calc-field {
    flex: 1;
    min-width: 150px;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.calc-field label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.calc-input {
    width: 100%;
    padding: 0.55rem 0.7rem;
    border: 1px solid var(--input-border);
    border-radius: var(--radius-md);
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.calc-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.calc-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.calc-check input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.calc-result {
    margin-top: 0.5rem;
    padding: 1rem;
    background: var(--primary-light);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    color: var(--text-primary);
    line-height: 1.5;
}

/* Toggle butonları aktif durumu (inline yerine class) */
.btn-toggle.is-active {
    background: var(--primary-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* En verimli yükseltme listesi */
.boost-head {
    margin-bottom: 0.6rem;
    color: var(--text-secondary);
}

.boost-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    counter-reset: boost;
}

.boost-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.6rem 0.75rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.boost-item__main strong {
    color: var(--text-heading);
}

.boost-item__meta {
    display: block;
    margin-top: 0.15rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.boost-item__impact {
    font-weight: 700;
    color: var(--success-color);
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
}

.boost-item__impact span {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.8rem;
}

/* ========== Page Layout & Info Sidebar ========== */

.page-wrapper {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 2rem;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 2rem 1rem;
    flex: 1; /* Pushes footer down */
}

.main-container {
    flex: 1;
    max-width: 1000px;
    margin: 0 !important; /* Overriding previous centering for flex layout */
}

.info-sidebar {
    width: 340px;
    flex-shrink: 0;
    position: sticky;
    top: 2rem;
    transition: all 0.3s ease;
}

.info-sidebar.hidden {
    display: none;
}

.info-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: fadeIn 0.5s ease-out;
}

.info-header {
    background: var(--primary-color);
    color: white;
    padding: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
}

.info-body {
    padding: 1.5rem;
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-primary);
}

.info-body p {
    margin-bottom: 1rem;
}

.info-body p:last-child {
    margin-bottom: 0;
}

.info-body a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 1.5px solid var(--primary-light);
    transition: all 0.2s;
}

.info-body a:hover {
    color: var(--primary-hover);
    border-bottom-color: var(--primary-hover);
}

.disclaimer {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-style: italic;
    background: #f8fafc;
    padding: 1rem;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--warning-color);
}

[data-theme="dark"] .disclaimer {
    background: #1f2937;
    color: #94a3b8;
}

/* Final Footer Styling (Minimized) */
.app-footer {
    width: 100%;
    text-align: center;
    padding: 3rem 1.5rem 2rem;
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.app-footer p {
    font-size: 0.72rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.5;
    opacity: 0.65;
}

.app-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.app-footer a:hover {
    text-decoration: underline;
}

[data-theme="dark"] .app-footer {
    border-top-color: #1e293b;
}

/* Responsive Sidebar */
@media (max-width: 1280px) {
    .page-wrapper {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
    }

    .main-container {
        width: 100%;
    }

    .info-sidebar {
        width: 100%;
        max-width: 1000px;
        position: static;
    }
}

@media (max-width: 640px) {
    .page-wrapper {
        padding: 1rem;
        gap: 1.5rem;
    }
    
    .info-header {
        padding: 1rem;
        font-size: 1rem;
    }
    
    .info-body {
        padding: 1rem;
        font-size: 0.9rem;
    }
}

/* ===== Grade Scale Editor Modal ===== */
.gs-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.gs-modal-overlay.hidden {
    display: none;
}

.gs-modal {
    background: var(--card-bg, #fff);
    border-radius: 16px;
    width: 100%;
    max-width: 480px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

.gs-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color, #e2e8f0);
}

.gs-modal-header h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary, #1e293b);
}

.gs-modal-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary, #64748b);
    font-size: 1.1rem;
    padding: 4px 8px;
    border-radius: 6px;
    transition: background 0.15s;
}

.gs-modal-close:hover {
    background: var(--border-color, #e2e8f0);
}

.gs-modal-body {
    padding: 1rem 1.25rem;
    overflow-y: auto;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.gs-preset-bar {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.gs-preset-bar label {
    font-size: 0.85rem;
    color: var(--text-secondary, #64748b);
    white-space: nowrap;
}

.gs-preset-bar select {
    flex: 1;
    min-width: 180px;
    padding: 0.4rem 0.6rem;
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 8px;
    font-size: 0.85rem;
    background: var(--card-bg, #fff);
    color: var(--text-primary, #1e293b);
    cursor: pointer;
}

.gs-entries-header {
    display: grid;
    grid-template-columns: 1fr 1.4fr 32px;
    gap: 0.5rem;
    padding: 0 0.1rem;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary, #64748b);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.gs-entries-list {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.gs-editor-row {
    display: grid;
    grid-template-columns: 1fr 1.4fr 32px;
    gap: 0.5rem;
    align-items: center;
}

.gs-grade-input,
.gs-point-input {
    padding: 0.4rem 0.55rem;
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 7px;
    font-size: 0.9rem;
    background: var(--card-bg, #fff);
    color: var(--text-primary, #1e293b);
    width: 100%;
    box-sizing: border-box;
    transition: border-color 0.15s;
}

.gs-grade-input:focus,
.gs-point-input:focus {
    outline: none;
    border-color: var(--primary-color, #3b82f6);
}

.gs-remove-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: #ef4444;
    font-size: 0.85rem;
    padding: 4px;
    border-radius: 6px;
    transition: background 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gs-remove-btn:hover {
    background: #fee2e2;
}

.gs-add-btn {
    margin-top: 0.25rem;
    background: none;
    border: 1px dashed var(--border-color, #cbd5e1);
    border-radius: 8px;
    padding: 0.5rem;
    width: 100%;
    cursor: pointer;
    color: var(--text-secondary, #64748b);
    font-size: 0.85rem;
    transition: border-color 0.15s, color 0.15s;
}

.gs-add-btn:hover {
    border-color: var(--primary-color, #3b82f6);
    color: var(--primary-color, #3b82f6);
}

.gs-modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.6rem;
    padding: 0.85rem 1.25rem;
    border-top: 1px solid var(--border-color, #e2e8f0);
}

[data-theme="dark"] .gs-preset-bar select,
[data-theme="dark"] .gs-grade-input,
[data-theme="dark"] .gs-point-input {
    background-color: #1f2937;
    color: #e2e8f0;
    border-color: #374151;
}