/**
 * Main Premium CSS Stylesheet
 * ระบบดีไซน์ระดับพรีเมียม (Premium Modern Glassmorphism & Adaptive Dark Mode)
 */

/* --------------------------------------------------------
 * 1. ระบบตัวแปรดีไซน์ (Design System Tokens)
 * -------------------------------------------------------- */
:root {
    /* ธีมสว่างเริ่มต้น (Light Theme Mode) */
    --font-primary: 'Inter', 'Kanit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* จานสีหลัก (Harmony HSL Color Palette) */
    --primary-h: 245;
    --primary-s: 75%;
    --primary-l: 60%;
    
    --primary: hsl(var(--primary-h), var(--primary-s), var(--primary-l));
    --primary-hover: hsl(var(--primary-h), var(--primary-s), calc(var(--primary-l) - 8%));
    --primary-light: hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.15);
    
    --secondary: #64748b;
    --success: #10b981;
    --success-light: rgba(16, 185, 129, 0.15);
    --warning: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.15);
    --danger: #ef4444;
    --danger-light: rgba(239, 68, 68, 0.15);
    --info: #06b6d4;
    --info-light: rgba(6, 182, 212, 0.15);

    /* พื้นหลังและระดับสเกลเทา */
    --bg-app: #f8fafc;
    --bg-card: rgba(255, 255, 255, 0.75);
    --border-color: rgba(226, 232, 240, 0.8);
    --border-glass: rgba(255, 255, 255, 0.4);
    --text-main: #1e293b;
    --text-muted: #64748b;
    --text-on-primary: #ffffff;
    --shadow-main: 0 8px 32px 0 rgba(31, 38, 135, 0.05);
    --shadow-hover: 0 12px 40px 0 rgba(31, 38, 135, 0.1);
    
    --glass-blur: 12px;
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    
    --sidebar-width: 260px;
    --header-height: 70px;
    
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
}

/* ธีมมืดปรับตัวอัตโนมัติ (Dark Theme Mode Override) */
[data-theme="dark"] {
    --bg-app: #090d16;
    --bg-card: rgba(15, 23, 42, 0.65);
    --border-color: rgba(51, 65, 85, 0.5);
    --border-glass: rgba(255, 255, 255, 0.08);
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --shadow-main: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 12px 48px 0 rgba(0, 0, 0, 0.45);
    
    --primary-l: 65%;
    --primary: hsl(var(--primary-h), var(--primary-s), var(--primary-l));
    --primary-hover: hsl(var(--primary-h), var(--primary-s), calc(var(--primary-l) + 8%));
    --primary-light: hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.25);
}

/* --------------------------------------------------------
 * 2. ค่าตั้งต้นและองค์ประกอบพื้นฐาน (Global Resets)
 * -------------------------------------------------------- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-app);
    color: var(--text-main);
    overflow-x: hidden;
    line-height: 1.5;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s ease;
}
a:hover {
    color: var(--primary-hover);
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* --------------------------------------------------------
 * 3. องค์ประกอบ Glassmorphism (Premium UI Cards)
 * -------------------------------------------------------- */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-main);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.3s ease;
}

.glass-card:hover {
    box-shadow: var(--shadow-hover);
}

/* --------------------------------------------------------
 * 4. หน้าเข้าสู่ระบบ (Login UI)
 * -------------------------------------------------------- */
.login-card {
    padding: 40px 30px;
    border-radius: 24px;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.logo-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    box-shadow: 0 8px 16px rgba(99, 102, 241, 0.3);
    margin-bottom: 16px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: white;
}

.login-header h2 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--text-main), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 14px;
    color: var(--text-muted);
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-main);
}

.input-icon {
    width: 16px;
    height: 16px;
    color: var(--primary);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    outline: none;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 0 4px var(--primary-light);
}

/* ปรับปรุงพื้นหลัง Input สว่างเมื่อเป็น Light Mode ให้เด่นขึ้น */
body:not([data-theme="dark"]) .form-control {
    background: rgba(255, 255, 255, 0.9);
}

.password-input-wrapper {
    position: relative;
}

.password-input-wrapper .form-control {
    padding-right: 48px;
}

.btn-toggle-pwd {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    padding: 6px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
}

.btn-toggle-pwd:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-main);
}

/* --------------------------------------------------------
 * 5. ปุ่มประเภทต่างๆ (Buttons Components)
 * -------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    outline: none;
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-primary {
    background: var(--primary);
    color: var(--text-on-primary);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}
.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.3);
}
.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-color);
    color: var(--text-main);
}
.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--text-muted);
}

.btn-danger {
    background: var(--danger);
    color: white;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.2);
}
.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(239, 68, 68, 0.3);
}

.btn-success {
    background: var(--success);
    color: white;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
}
.btn-success:hover {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(16, 185, 129, 0.3);
}

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

.btn-icon-only {
    padding: 8px;
    border-radius: var(--radius-sm);
}

/* --------------------------------------------------------
 * 6. ระบบแผงควบคุมหลัก (App Dashboard Layout)
 * -------------------------------------------------------- */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar แถบเมนูด้านซ้าย */
.app-sidebar {
    width: var(--sidebar-width);
    background: var(--bg-card);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-right: 1px solid var(--border-color);
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 50;
    transition: transform 0.3s ease;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px;
    margin-bottom: 32px;
}

.brand-icon {
    width: 32px;
    height: 32px;
    color: var(--primary);
}

.brand-text {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.sidebar-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
}

.menu-item a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: var(--radius-md);
    color: var(--text-muted);
    font-weight: 500;
    transition: all 0.2s ease;
}

.menu-item a:hover, .menu-item.active a {
    color: var(--primary);
    background: var(--primary-light);
}

.menu-item-icon {
    width: 20px;
    height: 20px;
}

.sidebar-user {
    padding: 16px 12px;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: auto;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #a78bfa, #818cf8);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
}

.user-info {
    flex: 1;
    overflow: hidden;
}

.user-name {
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}

.user-role {
    font-size: 12px;
    color: var(--text-muted);
}

.btn-logout {
    color: var(--danger);
    padding: 6px;
    border-radius: var(--radius-sm);
    display: flex;
    transition: background-color 0.2s;
}
.btn-logout:hover {
    background-color: var(--danger-light);
}

/* พื้นที่คอนเทนต์ขวา */
.app-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 30px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* แถบด้านบน Header */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 30px;
}

.page-title h1 {
    font-size: 24px;
    font-weight: 600;
}

.page-title p {
    font-size: 14px;
    color: var(--text-muted);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* ปุ่มสลับธีม (Theme Toggle Button) */
.btn-theme-toggle {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}
.btn-theme-toggle:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: scale(1.05);
}

/* --------------------------------------------------------
 * 7. แดชบอร์ดสรุปวิเคราะห์สถิติ (Dashboard UI)
 * -------------------------------------------------------- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.stat-icon-wrapper {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon {
    width: 28px;
    height: 28px;
}

.stat-icon-wrapper.primary { background-color: var(--primary-light); color: var(--primary); }
.stat-icon-wrapper.success { background-color: var(--success-light); color: var(--success); }
.stat-icon-wrapper.info    { background-color: var(--info-light); color: var(--info); }
.stat-icon-wrapper.warning { background-color: var(--warning-light); color: var(--warning); }

.stat-details h3 {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.2;
}

.stat-details p {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
}

/* แผนภูมิวิเคราะห์ข้อมูล */
.charts-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
    margin-bottom: 30px;
}

.chart-card {
    padding: 24px;
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.chart-title {
    font-size: 16px;
    font-weight: 600;
}

.chart-container {
    position: relative;
    width: 100%;
    height: 300px;
}

/* --------------------------------------------------------
 * 8. แผงตัวกรองและตารางรายชื่อ (Filters & Table UI)
 * -------------------------------------------------------- */
.filter-card {
    padding: 20px;
    margin-bottom: 24px;
}

.filter-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr) auto;
    gap: 16px;
    align-items: flex-end;
}

.search-wrapper {
    position: relative;
}

.search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--text-muted);
}

.search-wrapper .form-control {
    padding-left: 40px;
}

.table-card {
    padding: 12px 0;
    overflow: hidden;
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
}

.table-premium {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.table-premium th, .table-premium td {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.table-premium th {
    font-weight: 600;
    color: var(--text-muted);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: rgba(255, 255, 255, 0.02);
}

.table-premium tbody tr {
    transition: background-color 0.2s ease;
}
.table-premium tbody tr:hover {
    background-color: var(--primary-light);
}

/* คอลัมน์โปรไฟล์รูปในตาราง */
.student-profile-cell {
    display: flex;
    align-items: center;
    gap: 14px;
}

.student-photo-mini {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border-color);
    background-color: var(--border-color);
}

.student-initials-mini {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--border-color);
}

.student-name-bold {
    font-weight: 600;
    color: var(--text-main);
}

.student-sub-detail {
    font-size: 12px;
    color: var(--text-muted);
}

/* คลาสสถานะ (Status Badges) */
.badge {
    display: inline-flex;
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 9999px;
    line-height: 1;
}

.badge-success { background-color: var(--success-light); color: var(--success); }
.badge-warning { background-color: var(--warning-light); color: var(--warning); }
.badge-danger  { background-color: var(--danger-light); color: var(--danger); }
.badge-info    { background-color: var(--info-light); color: var(--info); }
.badge-info-outline { background-color: transparent; border: 1px solid var(--border-color); color: var(--text-muted); }

.action-buttons {
    display: flex;
    gap: 8px;
}

.action-btn {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    cursor: pointer;
    background: transparent;
    color: var(--text-muted);
    transition: all 0.2s;
}

.action-btn.view:hover { color: var(--info); background-color: var(--info-light); border-color: var(--info); }
.action-btn.edit:hover { color: var(--warning); background-color: var(--warning-light); border-color: var(--warning); }
.action-btn.delete:hover { color: var(--danger); background-color: var(--danger-light); border-color: var(--danger); }

/* แผงเลขหน้าแบ่งส่วน (Pagination Controls) */
.pagination-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
}

.pagination-info {
    font-size: 13px;
    color: var(--text-muted);
}

.pagination-controls {
    display: flex;
    gap: 6px;
}

.page-btn {
    min-width: 36px;
    height: 36px;
    padding: 0 8px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

.page-btn:hover:not(:disabled) {
    background-color: var(--primary-light);
    color: var(--primary);
    border-color: var(--primary);
}

.page-btn.active {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
}

.page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* --------------------------------------------------------
 * 9. หน้าต่างลอยและการกรอกฟอร์ม (Modals & Forms UI)
 * -------------------------------------------------------- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(9, 13, 22, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-box {
    width: 100%;
    max-width: 750px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    transform: translateY(30px) scale(0.95);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
}

.modal-overlay.active .modal-box {
    transform: translateY(0) scale(1);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
}

.btn-close-modal {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    padding: 4px;
    border-radius: 50%;
    display: flex;
    transition: background-color 0.2s;
}
.btn-close-modal:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-main);
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* โครงสร้างกริดสำหรับฟอร์มกรอกข้อมูล */
.form-row-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 20px;
}

.form-row-grid.three-cols {
    grid-template-columns: repeat(3, 1fr);
}

.form-section-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 20px 0 10px 0;
    padding-bottom: 6px;
    border-bottom: 1px dashed var(--border-color);
}
.form-section-title:first-of-type {
    margin-top: 0;
}

/* ส่วนจัดอัปโหลดและพรีวิวภาพนักเรียน */
.photo-upload-container {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 24px;
    padding: 16px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
}

.photo-preview-wrapper {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 2px solid var(--border-color);
    background-color: var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.photo-preview-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-preview-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-muted);
}
.photo-preview-placeholder i {
    width: 32px;
    height: 32px;
}

.photo-upload-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.photo-upload-actions p {
    font-size: 12px;
    color: var(--text-muted);
}

/* --------------------------------------------------------
 * 10. ระบบนำเข้าไฟล์ CSV (CSV Bulk Import View)
 * -------------------------------------------------------- */
.csv-import-box {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 20px;
    text-align: center;
    margin-bottom: 24px;
    transition: all 0.3s;
    background: rgba(255, 255, 255, 0.01);
}

.csv-import-box.dragover {
    border-color: var(--primary);
    background-color: var(--primary-light);
}

.csv-icon-wrapper {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background-color: var(--primary-light);
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.csv-icon {
    width: 32px;
    height: 32px;
}

.csv-btn-wrapper {
    margin: 16px 0;
}

/* ตารางแสดงตัวอย่างข้อมูล CSV (CSV Preview Table) */
.csv-preview-card {
    margin-top: 24px;
}

.csv-status-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 6px;
}
.csv-status-dot.valid { background-color: var(--success); }
.csv-status-dot.invalid { background-color: var(--danger); }

.tr-csv-invalid {
    background-color: rgba(239, 68, 68, 0.08) !important;
}

.tr-csv-invalid:hover {
    background-color: rgba(239, 68, 68, 0.12) !important;
}

.error-text-mini {
    font-size: 11px;
    color: var(--danger);
    font-weight: 500;
    display: block;
    margin-top: 4px;
}

/* --------------------------------------------------------
 * 11. แผงการเชื่อมโยงระบบภายนอก (API Integration Settings)
 * -------------------------------------------------------- */
.api-integration-card {
    padding: 24px;
}

.api-key-display-box {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    border-radius: var(--radius-md);
    margin-top: 16px;
    font-family: monospace;
}

body:not([data-theme="dark"]) .api-key-display-box {
    background: rgba(255, 255, 255, 0.9);
}

.api-key-text {
    flex: 1;
    overflow-x: auto;
    font-size: 14px;
    white-space: nowrap;
}

.btn-copy-key {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    padding: 6px;
    border-radius: var(--radius-sm);
    display: flex;
    transition: all 0.2s;
}
.btn-copy-key:hover {
    color: var(--primary);
    background-color: var(--primary-light);
}

.api-usage-code {
    background-color: #0f172a;
    color: #e2e8f0;
    padding: 16px;
    border-radius: var(--radius-md);
    font-family: monospace;
    font-size: 13px;
    overflow-x: auto;
    margin-top: 14px;
    border: 1px solid #1e293b;
}

/* --------------------------------------------------------
 * 12. อนิเมชันและการแจ้งเตือน (Animations & Indicators)
 * -------------------------------------------------------- */
.alert {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    border-radius: var(--radius-md);
    font-size: 14px;
    margin-bottom: 24px;
    border: 1px solid transparent;
}

.alert-danger {
    background-color: var(--danger-light);
    border-color: rgba(239, 68, 68, 0.3);
    color: var(--danger);
}

.alert-success {
    background-color: var(--success-light);
    border-color: rgba(16, 185, 129, 0.3);
    color: var(--success);
}

.alert-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.hidden {
    display: none !important;
}

.animate-fade-in {
    animation: fadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* วงล้อโหลดข้อมูล (Spinner) */
.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* โหลดข้อมูลครอบทับตาราง (Table Loading Overlay) */
.table-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(9, 13, 22, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    backdrop-filter: blur(2px);
}
.table-loading-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.spinner-large {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 1s linear infinite;
}

/* --------------------------------------------------------
 * 13. การแสดงผลในหน้าจอขนาดเล็ก (Mobile Responsive Grid)
 * -------------------------------------------------------- */
@media (max-width: 1024px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --sidebar-width: 0px;
    }
    
    .app-sidebar {
        transform: translateX(-100%);
    }
    
    .app-sidebar.active {
        transform: translateX(0);
        width: 260px;
    }
    
    .app-content {
        margin-left: 0;
        padding: 16px;
    }
    
    .filter-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row-grid, .form-row-grid.three-cols {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    /* ปุ่มเมนูนำทางบนมือถือ */
    .btn-mobile-menu {
        display: flex !important;
    }
}

.btn-mobile-menu {
    display: none;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    align-items: center;
    justify-content: center;
}