:root {
    --bg-page: #f5f7fb;
    --bg-panel: #ffffff;
    --bg-panel-soft: #f8fafc;
    --border-color: #dbe2ea;

    --text-primary: #1f2937;
    --text-secondary: #6b7280;

    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary: #ffffff;
    --secondary-hover: #f3f4f6;
    --secondary-border: #cfd8e3;

    --success: #16a34a;
    --shadow-soft: 0 8px 24px rgba(15, 23, 42, 0.08);
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
}

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

body {
    font-family: "Inter", Arial, sans-serif;
    color: var(--text-primary);
}


.app-page {
    margin: 0;
    display: flex;
    height: 100vh;
    background: var(--bg-page);
}

.sidebar {
    width: 290px;
    background: var(--bg-panel);
    border-right: 1px solid var(--border-color);
    padding: 16px;
    overflow-y: auto;
    box-shadow: var(--shadow-sm);
}

.sidebar::-webkit-scrollbar {
    width: 8px;
}

.sidebar::-webkit-scrollbar-thumb {
    background-color: #cbd5e1;
    border-radius: 999px;
}

.sidebar::-webkit-scrollbar-track {
    background-color: transparent;
}

.sidebar h2 {
    font-size: 18px;
    margin: 0 0 4px;
    font-weight: 700;
    color: var(--text-primary);
}

.sidebar .subtitle {
    margin: 0 0 12px;
    font-size: 13px;
    line-height: 1.3;
    color: var(--text-secondary);
    text-align: left;
}

.search-box {
    width: 100%;
    padding: 10px 12px;
    margin-bottom: 10px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: #fff;
    color: var(--text-primary);
    font-size: 13px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.search-box:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

#testForm {
    margin-top: 0;
}

#testList {
    background: var(--bg-panel-soft);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 8px;
    max-height: 420px;
    overflow-y: auto;
    margin-bottom: 10px;
}

#testList::-webkit-scrollbar {
    width: 8px;
}

#testList::-webkit-scrollbar-thumb {
    background-color: #cbd5e1;
    border-radius: 999px;
}

.app-page label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: 0.2s;
    font-size: 13px;
    padding: 6px 8px;
    border-radius: 8px;
    line-height: 1.2;
}

.app-page label:hover {
    background: #eef4ff;
    color: var(--text-primary);
}

.app-page input[type="checkbox"] {
    width: 14px;
    height: 14px;
    accent-color: var(--primary);
    cursor: pointer;
    flex-shrink: 0;
}

.btn {
    width: 100%;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 600;
    padding: 10px 12px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 8px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.18);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    background: var(--secondary-hover);
    border-color: #b8c4d3;
}

.content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 24px;
    background: var(--bg-page);
    overflow-y: auto;
}

.viewer-card {
    flex: 1;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    display: flex;
    flex-direction: column;
}

.viewer-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    background: #ffffff;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

iframe {
    flex: 1;
    border: none;
    background: #fff;
    width: 100%;
}

.progress-container {
    width: 100%;
    height: 8px;
    margin: 10px 0 0;
    background: #e5e7eb;
    border-radius: 999px;
    overflow: hidden;
    display: none;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #2563eb, #60a5fa);
    transition: width 0.3s ease;
    border-radius: 999px;
}

#toggleSelectBtn {
    margin-bottom: 8px;
    margin-top: 0;
}

h1 {
    font-size: 20px;
}

.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    min-width: 250px;
    max-width: 350px;
    padding: 12px 16px;
    border-radius: 8px;
    color: #fff;
    font-size: 14px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    animation: fadeIn 0.3s ease;
}

.toast.success {
    background-color: #28a745;
}

.toast.error {
    background-color: #dc3545;
}

.toast.warning {
    background-color: #ffc107;
    color: #000;
}

.toast.info {
    background-color: #17a2b8;
}

ul {
    list-style: none;
    padding: 0;
}

li {
    margin-bottom: 12px;
}

.file-link {
    display: block;
    padding: 12px 16px;
    border-radius: 8px;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    color: #2563eb;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s ease;
}

.file-link:hover {
    background: #eff6ff;
    border-color: #2563eb;
}

.empty {
    margin-top: 10px;
    color: #6b7280;
    font-style: italic;
}

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


.login-page {
    margin: 0;
    background: #f5f7fa;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-container {
    width: 100%;
    max-width: 400px;
}

.login-box {
    background: #ffffff;
    padding: 40px;
    border-radius: 14px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.login-box h2 {
    text-align: center;
    color: #2c3e50;
    font-size: 24px;
    margin: 0;
}

.login-box .subtitle {
    text-align: center;
    color: #7f8c8d;
    margin-bottom: 10px;
    font-size: 14px;
}

.login-box input {
    width: 100%;
    padding: 12px;
    border: 1px solid #dcdcdc;
    border-radius: 6px;
    font-size: 14px;
    transition: 0.2s;
}

.login-box input:focus {
    border-color: #3498db;
    outline: none;
}

.login-box button {
    padding: 12px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 15px;
    cursor: pointer;
    transition: 0.2s;
}

.login-box button:hover {
    background: #2980b9;
}

.login-logo {
    width: 230px;
    height: auto;
    margin: 0 auto 15px;
    display: block;
    object-fit: contain;
}

.logout-btn {
  margin-bottom: 10px;
  background: #fff;
  border: 1px solid #fca5a5;
  color: #dc2626;
}

.logout-btn:hover {
  background: #fee2e2;
  border-color: #dc2626;
}