/* ==========================================================================
   PIRLS 管理後台樣式
   ========================================================================== */

:root {
    /* Scholar palette (matches portal.css) — drop-in replacements for the
       previous indigo/violet admin theme. */
    --primary-color:   #3f4d36;     /* was indigo  -> accent-strong */
    --primary-hover:   #2a2620;     /* was indigo  -> ink */
    --secondary-color: #5b5347;     /* ink-soft */
    --success-color:   #6b8a5e;     /* sage green */
    --background:      #f5efe2;     /* scholar bg */
    --sidebar-bg:      linear-gradient(165deg, #5b6b4f 0%, #3f4d36 100%);
    --card-bg:         #fbf7ec;     /* surface */
    --text-primary:    #2a2620;     /* ink */
    --text-secondary:  #5b5347;     /* ink-soft */
    --border-color:    #d9cfb8;     /* rule */
    --shadow: 0 4px 16px rgba(60,45,20,.08), 0 1px 3px rgba(60,45,20,.06);
    --shadow-lg: 0 16px 40px rgba(60,45,20,.14), 0 2px 6px rgba(60,45,20,.08);

    /* Native scholar tokens (used by overrides) */
    --sch-bg:           #f5efe2;
    --sch-bg-soft:      #ede5d2;
    --sch-surface:      #fbf7ec;
    --sch-surface-2:    #f3ecd9;
    --sch-ink:          #2a2620;
    --sch-ink-soft:     #5b5347;
    --sch-ink-mute:     #8a8170;
    --sch-rule:         #d9cfb8;
    --sch-rule-soft:    #e8e0cb;
    --sch-accent:       #5b6b4f;
    --sch-accent-strong:#3f4d36;
    --sch-accent-soft:  #e3e8d8;
    --sch-warn:         #b8794a;
    --sch-warn-soft:    #f1dfcd;
    --sch-good:         #6b8a5e;
    --sch-good-soft:    #dfe8d3;
    --sch-brass:        #c79753;
    --sch-serif: "Noto Serif TC", "Source Han Serif TC", "PingFang TC", serif;
    --sch-sans:  "Noto Sans TC", "PingFang TC", -apple-system, sans-serif;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    min-height: 100vh;
}

/* ==========================================================================
   容器佈局
   ========================================================================== */
.admin-container {
    display: flex;
    min-height: 100vh;
}

/* ==========================================================================
   側邊欄
   ========================================================================== */
.sidebar {
    width: 260px;
    background: var(--sidebar-bg);
    color: white;
    padding: 30px 20px;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
}

.logo h1 {
    font-size: 1.8rem;
    margin-bottom: 5px;
}

.logo p {
    opacity: 0.8;
    font-size: 0.9rem;
}

nav {
    margin-top: 40px;
}

.nav-item {
    display: block;
    padding: 12px 16px;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    margin-bottom: 8px;
    transition: background 0.2s;
}

.nav-item:hover,
.nav-item.active {
    background: rgba(255, 255, 255, 0.2);
}

.stats-box {
    margin-top: auto;
    background: rgba(255, 255, 255, 0.15);
    padding: 20px;
    border-radius: 12px;
    text-align: center;
}

.stats-box h3 {
    font-size: 0.85rem;
    opacity: 0.9;
    margin-bottom: 8px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
}

/* ==========================================================================
   主內容區
   ========================================================================== */
.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 40px;
}

header {
    margin-bottom: 30px;
}

header h2 {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

header p {
    color: var(--text-secondary);
}

/* ==========================================================================
   步驟指示器
   ========================================================================== */
.steps-indicator {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-bottom: 40px;
    padding: 20px;
}

.step {
    display: flex;
    align-items: center;
    gap: 12px;
    opacity: 0.4;
    transition: opacity 0.3s;
}

.step.active {
    opacity: 1;
}

.step.completed .step-number {
    background: var(--success-color);
}

.step-number {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--secondary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.step.active .step-number {
    background: var(--primary-color);
}

.step-label {
    font-weight: 500;
    color: var(--text-primary);
}

/* ==========================================================================
   步驟內容
   ========================================================================== */
.step-content {
    display: none;
}

.step-content.active {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

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

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

/* ==========================================================================
   上傳區域
   ========================================================================== */
.upload-zone {
    background: var(--card-bg);
    border: 2px dashed var(--border-color);
    border-radius: 16px;
    padding: 60px 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    margin-bottom: 30px;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--sch-accent);
    background: var(--sch-accent-soft);
}

.upload-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.upload-zone h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.upload-zone p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.format-hint {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow);
}

.format-hint h4 {
    margin-bottom: 12px;
    color: var(--text-primary);
}

.format-hint ul {
    list-style: none;
}

.format-hint li {
    padding: 6px 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 24px;
}

.format-hint li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
}

/* ==========================================================================
   按鈕
   ========================================================================== */
.btn {
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

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

.btn-secondary {
    background: white;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--background);
}

.action-buttons {
    display: flex;
    gap: 12px;
    margin-top: 30px;
    justify-content: flex-end;
}

/* ==========================================================================
   預覽區域
   ========================================================================== */
.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.preview-header h3 {
    font-size: 1.3rem;
}

.id-input {
    display: flex;
    align-items: center;
    gap: 12px;
}

.id-input label {
    font-weight: 500;
}

.id-input input {
    width: 100px;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
}

.id-input .hint {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.preview-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 30px;
    box-shadow: var(--shadow);
}

.preview-section {
    margin-bottom: 24px;
}

.preview-section:last-child {
    margin-bottom: 0;
}

.preview-section h4 {
    margin-bottom: 12px;
    color: var(--text-primary);
    font-size: 1rem;
}

.preview-content {
    background: var(--background);
    padding: 16px;
    border-radius: 8px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.preview-content.scrollable {
    max-height: 200px;
    overflow-y: auto;
}

.question-item {
    padding: 12px;
    background: white;
    margin-bottom: 8px;
    border-radius: 6px;
    border-left: 3px solid var(--primary-color);
}

.question-item:last-child {
    margin-bottom: 0;
}

.question-type {
    font-size: 0.75rem;
    color: white;
    background: var(--primary-color);
    padding: 2px 8px;
    border-radius: 4px;
    margin-left: 8px;
}

/* ==========================================================================
   成功訊息
   ========================================================================== */
.success-message {
    text-align: center;
    background: var(--card-bg);
    border-radius: 16px;
    padding: 60px 40px;
    box-shadow: var(--shadow);
}

.success-icon {
    font-size: 5rem;
    margin-bottom: 20px;
}

.success-message h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--success-color);
}

.result-info {
    margin-bottom: 30px;
}

.result-info p {
    padding: 8px 0;
    color: var(--text-secondary);
}

.result-info strong {
    color: var(--text-primary);
}

/* ==========================================================================
   響應式設計
   ========================================================================== */
@media (max-width: 1024px) {
    .sidebar {
        width: 200px;
        padding: 20px 15px;
    }

    .main-content {
        margin-left: 200px;
        padding: 30px;
    }
}

@media (max-width: 768px) {
    .admin-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        padding: 20px;
    }

    .main-content {
        margin-left: 0;
        padding: 20px;
    }

    .steps-indicator {
        gap: 20px;
        flex-wrap: wrap;
    }

    .step-label {
        display: none;
    }

    .preview-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }

    .action-buttons {
        flex-direction: column;
    }

    .stats-box {
        display: none;
    }
}

/* ==========================================================================
   SCHOLAR THEME OVERRIDES — typography, paper texture, button polish
   ========================================================================== */

body {
    font-family: var(--sch-sans);
    background-color: var(--sch-bg);
    background-image:
        radial-gradient(rgba(120,100,60,.04) 1px, transparent 1px),
        radial-gradient(rgba(120,100,60,.03) 1px, transparent 1px);
    background-size: 20px 20px, 32px 32px;
    background-position: 0 0, 10px 16px;
    color: var(--sch-ink);
}

/* Sidebar — already using --sidebar-bg gradient (now ink-green) */
.sidebar {
    border-right: 1px solid var(--sch-accent-strong);
    box-shadow: inset -1px 0 0 rgba(255,255,255,.06);
}
.logo h1 {
    font-family: var(--sch-serif);
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -.01em;
}
.logo p { color: rgba(255,255,255,.85); font-weight: 500; }
.nav-item {
    border: 1px solid transparent;
    font-weight: 600;
}
.nav-item:hover {
    background: rgba(255,255,255,.12);
    border-color: rgba(255,255,255,.2);
}
.nav-item.active {
    background: rgba(255,255,255,.2);
    box-shadow: 0 1px 0 rgba(255,255,255,.18) inset;
}
.stats-box {
    background: rgba(0,0,0,.18);
    border: 1px solid rgba(255,255,255,.12);
}
.stat-number {
    font-family: var(--sch-serif);
    color: #ffffff;
}

/* Main content header */
header h2 {
    font-family: var(--sch-serif);
    font-weight: 700;
    color: var(--sch-ink);
    letter-spacing: -.01em;
}

/* Step indicator */
.step-number {
    background: var(--sch-rule);
    color: var(--sch-ink-soft);
    font-family: var(--sch-serif);
}
.step.active .step-number {
    background: linear-gradient(135deg, var(--sch-accent) 0%, var(--sch-accent-strong) 100%);
    color: var(--sch-bg);
    box-shadow: 0 4px 10px -3px var(--sch-accent);
}
.step.completed .step-number {
    background: linear-gradient(135deg, var(--sch-good) 0%, #4a6740 100%);
    color: var(--sch-bg);
}
.step-label {
    color: var(--sch-ink-soft);
    font-weight: 600;
}

/* Cards — upload zone, format hint, etc. */
.upload-zone,
.format-hint {
    background: var(--sch-surface);
    border-radius: 14px;
    box-shadow: 0 1px 0 rgba(255,255,255,.5) inset;
}
.upload-zone {
    border: 2px dashed var(--sch-rule);
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--sch-ink) 0%, #3a3530 100%);
    color: var(--sch-bg);
    box-shadow:
        0 1px 0 rgba(255,255,255,.15) inset,
        0 4px 12px -3px rgba(60,45,20,.25);
    border-radius: 12px;
    padding: 13px 22px;
    font-weight: 700;
    letter-spacing: .04em;
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--sch-accent) 0%, var(--sch-accent-strong) 100%);
    box-shadow:
        0 1px 0 rgba(255,255,255,.25) inset,
        0 8px 18px -4px var(--sch-accent);
    transform: translateY(-2px);
}
.btn-secondary {
    background: var(--sch-surface);
    color: var(--sch-ink);
    border: 1.5px solid var(--sch-rule);
    border-radius: 12px;
    padding: 12px 22px;
    font-weight: 600;
}
.btn-secondary:hover {
    background: var(--sch-accent-soft);
    border-color: var(--sch-accent);
    color: var(--sch-accent-strong);
}

/* Forms / inputs (used in upload preview etc.) */
input[type="text"], input[type="email"], input[type="password"],
input[type="number"], input[type="search"],
textarea, select {
    background: var(--sch-surface);
    border: 1.5px solid var(--sch-rule);
    border-radius: 10px;
    padding: 11px 14px;
    font-family: var(--sch-sans);
    color: var(--sch-ink);
    transition: border-color .2s ease, box-shadow .2s ease;
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--sch-accent);
    box-shadow: 0 0 0 4px var(--sch-accent-soft);
}

/* Selection */
::selection {
    background: var(--sch-accent-soft);
    color: var(--sch-accent-strong);
}