:root {
    --bg: #f5f5f5;
    --surface: #ffffff;
    --surface2: #f0f0f0;
    --border: #e0e0e0;
    --border2: #cccccc;
    --text: #000000;
    --text2: #555555;
    --text3: #888888;
    --btn: #000000;
    --btn-hover-text: #22c55e;
    --accent: #22c55e;
    --danger: #ef4444;
    --warn: #f59e0b;
    --radius: 25px;
    --shadow: 0 1px 4px rgba(0,0,0,0.08);
    --shadow2: 0 4px 16px rgba(0,0,0,0.12);
}

  * { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Anuphan', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    font-size: 14px;
}

  /* ===== LOGIN ===== */
#login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%);
}
.login-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 48px 40px;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow2);
}
.login-logo {
    text-align: center;
    margin-bottom: 32px;
}
.login-logo .logo-text {
    font-family: 'Anuphan', sans-serif;
    font-size: 28px;
    font-weight: 500;
    letter-spacing: -1px;
    color: var(--text);
}
.login-logo .logo-sub {
    font-size: 11px;
    color: var(--text3);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 4px;
}
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--text2);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;}
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 9px 14px;
    border: 1px solid var(--border2);
    border-radius: var(--radius);
    font-family: 'Anuphan', sans-serif;
    font-size: 14px;
    background: var(--surface);
    color: var(--text);
    outline: none;
    transition: border-color 0.2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    border-color: var(--text);
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    background: var(--btn);
    color: #e9e9e9;
    border: none;
    border-radius: var(--radius);
    font-family: 'Anuphan', sans-serif;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.2s, background 0.2s;
    text-decoration: none;
    white-space: nowrap;
}
.btn:hover { color: var(--btn-hover-text);  }
.btn-full { width: 100%; justify-content: center; padding: 12px; }
.btn-outline {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border2);
}
.btn-outline:hover { color: var(--btn-hover-text); border-color: var(--btn);  }
.btn-danger { background: var(--danger); }
.btn-danger:hover { color: #fff; opacity: 0.85; }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-xs { padding: 4px 8px; font-size: 11px; }
.login-error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: var(--danger);
    padding: 9px 14px;
    border-radius: var(--radius);
    font-size: 13px;
    margin-bottom: 16px;
    display: none;
}
.btn.btn-outline.w-full:hover{ color: var(--danger); }
.btn.btn-outline.btn-sm:hover{ color: var(--danger); }
.btn.btn-outline:hover{ color: var(--danger); }
.btn.btn-outline.btn-xs:hover { color: var(--accent); }
.btn.btn-danger.btn-outline {color: var(--surface); background-color: var(--danger);}
.btn.btn-danger.btn-outline:hover {color: var(--surface); background-color: var(--danger); border-color: var(--danger);}


.btn-getusername:hover { color: var(--accent);}

/* ===== LAYOUT ===== */
#app { display: none; min-height: 100vh; }
.layout { display: flex; min-height: 100vh; }

  /* ===== SIDEBAR ===== */
.sidebar {
    width: 240px;
    background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
    transition: transform 0.3s;
}
.sidebar-header {
    padding: 20px 20px 16px;
    border-bottom: 1px solid var(--border);
}
.sidebar-logo {
    font-family: 'Anuphan', sans-serif;
    font-size: 50px;
    font-weight: 500;
    letter-spacing: -0.5px;
}
.sidebar-logo span { color: var(--accent); }
.sidebar-subtitle {
    font-size: 13px;
    color: var(--text3);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-top: 2px;
}
.sidebar-nav { flex: 1; overflow-y: auto; padding: 12px 0; }
.nav-section {
    padding: 8px 16px 4px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text3);
    letter-spacing: 1.5px;
    text-transform: uppercase;
}
.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 20px;
    cursor: pointer;
    color: var(--text2);
    font-size: 15px;
    transition: background 0.15s, color 0.15s;
    border-radius: 0;
    user-select: none;
}
.nav-item:hover { background: var(--bg); color: var(--text); }
.nav-item.active { background: var(--bg); color: var(--text); font-weight: 600; }
.nav-item .nav-icon { font-size: 15px; width: 20px; text-align: center; }
.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border);
}
.user-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}
.user-avatar {
    width: 32px; height: 32px;
    background: var(--btn);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
}
.user-info .user-name { font-size: 15px; font-weight: 500; }
.user-info .user-role {
    font-size: 13px;
    color: var(--text3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

  /* ===== MAIN CONTENT ===== */
.main-content {
    margin-left: 240px;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
.topbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 14px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
}
.topbar-title { font-size: 16px; font-weight: 600; }
.topbar-actions { display: flex; gap: 8px; align-items: center; }
.search-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 7px 12px;
    min-width: 220px;
}
.search-bar input {
    border: none;
    background: transparent;
    outline: none;
    font-family: 'Anuphan', sans-serif;
    font-size: 13px;
    width: 100%;
    color: var(--text);
}
.search-bar .search-icon { color: var(--text3); font-size: 13px; }
.page-content { padding: 24px; flex: 1; }

  /* ===== HAMBURGER ===== */
.hamburger {
    display: none;
    cursor: pointer;
    padding: 8px;
    font-size: 20px;
}
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 99;
}

  /* ===== CARDS ===== */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: var(--shadow);
}
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}
.card-title { font-size: 15px; font-weight: 600; }

  /* ===== FOLDER GRID ===== */
.folder-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}
.folder-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    transition: border-color 0.2s, box-shadow 0.2s;
    position: relative;
}
.folder-card:hover { border-color: var(--text3); box-shadow: var(--shadow); }
.folder-icon { font-size: 32px; }
.folder-name { font-size: 15px; font-weight: 500; text-align: center; }
.folder-count { font-size: 11px; color: var(--text3); }
.folder-delete {
    position: absolute; top: 6px; right: 8px;
    background: none; border: none; cursor: pointer;
    color: var(--text3); font-size: 14px; padding: 2px;
    display: none;
}
.folder-card:hover .folder-delete { display: block; }
.folder-delete:hover { color: var(--danger); }

  /* ===== FILE TABLE ===== */
.file-table-wrap { overflow-x: auto; }
.file-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 15px;
}
.file-table th {
    padding: 10px 14px;
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    color: var(--text3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
.file-table td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}
.file-table tr:last-child td { border-bottom: none; }
.file-table tr:hover td { background: var(--bg); }
.file-type-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 11px;
    font-weight: 600;
    font-family: 'Anuphan', sans-serif;
    background: var(--bg);
    border: 1px solid var(--border2);
    color: var(--text2);
}
.file-type-badge.pdf { background: #fff7ed; border-color: #fed7aa; color: #c2410c; }
.file-type-badge.docx { background: #eff6ff; border-color: #bfdbfe; color: #1d4ed8; }
.file-type-badge.xlsx { background: #f0fdf4; border-color: #bbf7d0; color: #15803d; }
.file-type-badge.png, .file-type-badge.jpg { background: #fdf4ff; border-color: #e9d5ff; color: #7e22ce; }
.doc-type-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 11px;
    font-weight: 600;
    background: #f1f5f9;
    border: 1px solid #cbd5e1;
    color: #475569;
}
.actions-cell { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }

  /* ===== FILTER ROW ===== */
.filter-row {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 16px;
}
.filter-btn {
    padding: 5px 12px;
    border: 1px solid var(--border2);
    border-radius: 20px;
    background: var(--surface);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    font-family: 'Anuphan', sans-serif;
    color: var(--text2);
}
.filter-btn:hover, .filter-btn.active {
    background: var(--btn);
    color: #fff;
    border-color: var(--btn);
}
.filter-btn.active:hover { color: var(--btn-hover-text); }

  /* ===== ANNOUNCEMENT ===== */
.announcement-item {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 15px;
    padding: 15px 16px;
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}
.announcement-item .ann-icon { font-size: 18px; flex-shrink: 0; margin-top: 1px; }
.announcement-item .ann-text { flex: 1; font-size: 15px; line-height: 1.6; }
.announcement-item .ann-date { font-size: 11px; color: var(--text3); white-space: nowrap; }
.ann-file-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: var(--surface);
    border: 0px solid var(--border);
    border-radius: var(--radius);
    padding: 4px 10px;
    font-size: 13px;
    cursor: pointer;
    margin-top: 6px;
    color: var(--text2);
    transition: color 0.15s;
}
.ann-file-badge:hover { color: var(--accent); }

  /* ===== MODAL ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 200;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 16px;
}
.modal-overlay.show { display: flex; }
.modal {
    background: var(--surface);
    border-radius: 25px;
    padding: 28px;
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow2);
}
.modal-title {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border);
}
.modal-footer {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

  /* ===== UPLOAD ZONE ===== */
.upload-zone {
    border: 2px dashed var(--border2);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    margin-bottom: 12px;
}
.upload-zone:hover, .upload-zone.drag { border-color: var(--text); background: var(--bg); }
.upload-zone-icon { font-size: 32px; margin-bottom: 8px; }
.upload-zone-text { font-size: 13px; color: var(--text2); }
.upload-zone-hint { font-size: 11px; color: var(--text3); margin-top: 4px; }
.upload-file-list { margin-top: 8px; }
.upload-file-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    background: var(--bg);
    border-radius: var(--radius);
    margin-bottom: 6px;
    font-size: 12px;
}
.upload-file-item .file-name { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.upload-file-item .file-size { color: var(--text3); white-space: nowrap; }
.upload-file-remove { cursor: pointer; color: var(--text3); font-size: 14px; }
.upload-file-remove:hover { color: var(--danger); }

  /* ===== PREVIEW MODAL ===== */
.preview-modal { max-width: 800px; }
.preview-frame {
    width: 100%;
    height: 500px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
}
.preview-frame iframe, .preview-frame img {
    width: 100%; height: 100%; border: none;
    border-radius: var(--radius);
    object-fit: contain;
}

  /* ===== STATS ===== */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}
.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow);
}
.stat-value { font-size: 24px; font-weight: 600; font-family: 'Anuphan', sans-serif; }
.stat-label { font-size: 12px; color: var(--text3); margin-top: 4px; }

  /* ===== LOG TABLE ===== */
.log-entry {
    display: flex;
    gap: 12px;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    font-size: 12px;
    align-items: flex-start;
}
.log-entry:last-child { border-bottom: none; }
.log-time { color: var(--text3); white-space: nowrap; font-family: 'Anuphan', sans-serif; }
.log-user { font-weight: 500; white-space: nowrap; min-width: 80px; }
.log-action { flex: 1; color: var(--text2); }

  /* ===== BREADCRUMB ===== */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    margin-bottom: 16px;
    color: var(--text3);
}
.breadcrumb a { color: var(--text2); cursor: pointer; text-decoration: none; }
.breadcrumb a:hover { color: var(--text); }
.breadcrumb .sep { font-size: 11px; }
.breadcrumb .current { color: var(--text); font-weight: 500; }

  /* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text3);
}
.empty-state .empty-icon { font-size: 40px; margin-bottom: 12px; }
.empty-state .empty-text { font-size: 14px; margin-bottom: 16px; }

  /* ===== WATERMARK NOTE ===== */
.watermark-note {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: var(--radius);
    padding: 10px 14px;
    font-size: 12px;
    color: #15803d;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

  /* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .sidebar {
    transform: translateX(-100%);
    }
    .sidebar.open {
    transform: translateX(0);
    }
    .sidebar-overlay.show { display: block; }
    .main-content { margin-left: 0; }
    .hamburger { display: block; }
    .topbar { padding: 12px 16px; }
    .page-content { padding: 16px; }
    .search-bar { min-width: 140px; }
    .stats-row { grid-template-columns: repeat(2, 1fr); }
    .folder-grid { grid-template-columns: repeat(2, 1fr); }
    .modal { padding: 20px; }
}

@media (max-width: 480px) {
    .topbar-actions .search-bar { display: none; }
    .stats-row { grid-template-columns: 1fr 1fr; }
}

  /* ===== TOAST ===== */
#toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.toast {
    background: var(--btn);
    color: #fff;
    padding: 12px 20px;
    border-radius: var(--radius);
    font-size: 13px;
    box-shadow: var(--shadow2);
    animation: slideIn 0.3s ease;
    max-width: 300px;
}
.toast.success { border-left: 3px solid var(--accent); }
.toast.error { border-left: 3px solid var(--danger); }
@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

  /* ===== MISC ===== */
.badge {
    display: inline-block;
    padding: 2px 7px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
}
.badge-admin { background: #1a1a1a; color: #fff; }
.badge-user { background: var(--bg); border: 1px solid var(--border2); color: var(--text2); }
.divider { border: none; border-top: 1px solid var(--border); margin: 16px 0; }
.text-muted { color: var(--text3); }
.text-sm { font-size: 12px; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.flex { display: flex; }
.gap-8 { gap: 8px; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.w-full { width: 100%; }
.hidden { display: none !important; }

.inline-editor {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px;
    margin-bottom: 8px;
    background: var(--bg);  }
.inline-editor textarea {
    width: 100%;
    border: none;
    background: transparent;
    font-family: 'Anuphan', sans-serif;
    font-size: 13px;
    resize: vertical;
    min-height: 60px;
    outline: none;
    color: var(--text);
}

.folder-icon i {
    font-size: 40px;      
    color: #f59e0b;       
    margin-bottom: 10px;
    transition: transform 0.3s; 
}


.folder-card:hover .folder-icon i {
    transform: scale(1.05);
    color: #d97706;       
}


.nav-item .nav-icon i {
    color: #6b7280; 
    transition: color 0.3s ease; 
}

.nav-item.active .nav-icon i {
    color: var(--accent); 
    filter: drop-shadow(0 0 2px var(--shadow)); 
}

@keyframes primaryColors {
    0%, 100% {
    color: #00ce4f; }
    33% {color: #ffff00; }
    66% {color: #ff0000; }
}

/*logout*/
.btn.btn-logout{
    background: var(--btn);
    border: none;
    color: var(--surface);
    cursor: pointer;
    font-size: 14px;
    padding: 12px;
    transition: color 0.2s;
    width: 100%;
    justify-content: center; 
}
.btn.btn-logout:hover {color: var(--danger);}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(255, 255, 255, 0.7);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    backdrop-filter: blur(2px);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border);
    border-top: 4px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-text {
    margin-top: 12px;
    font-weight: 500;
    color: var(--primary);
}