/* ============================================
   Industrial Hardcore Theme
   深灰炭黑底色 | 暗橙/暗金点缀
   仪表盘纹理、电路板、机械刻度肌理
   ============================================ */

/* ===== CSS Variables ===== */
:root {
    --bg-primary: #141418;
    --bg-secondary: #1a1a20;
    --bg-card: #1e1e26;
    --bg-card-hover: #24242e;
    --bg-input: #18181e;
    --bg-panel: #202028;
    
    --border-color: #2a2a35;
    --border-active: #3a3028;
    --border-gold: #5a4a30;
    
    --text-primary: #d4d4d8;
    --text-secondary: #909098;
    --text-muted: #686878;
    --text-gold: #c9883a;
    --text-gold-bright: #e8a850;
    --text-error: #e05555;
    --text-success: #5aad5a;
    --text-warning: #c9a030;
    
    --accent: #c9883a;
    --accent-hover: #d99848;
    --accent-glow: rgba(201, 136, 58, 0.15);
    --accent-glow-strong: rgba(201, 136, 58, 0.35);
    --accent-dark: #8a5a28;
    
    --radius-sm: 2px;
    --radius: 4px;
    --radius-lg: 6px;
    
    --font-mono: 'Consolas', 'Monaco', 'Courier New', monospace;
    --font-ui: 'Segoe UI', 'Arial', 'Helvetica Neue', sans-serif;
    --font-display: 'Arial', 'Helvetica Neue', sans-serif;
    
    --shadow: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-lg: 0 4px 20px rgba(0,0,0,0.5);
    --transition: 0.2s ease;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-ui);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    background-image: 
        /* 网格纹理 */
        linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px),
        /* 顶部渐变 */
        linear-gradient(180deg, rgba(201,136,58,0.03) 0%, transparent 40%);
    background-size: 40px 40px, 40px 40px, 100% 100%;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-dark); }

/* ===== Container ===== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Top Navigation Bar ===== */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
}

.navbar::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--accent-dark), transparent 50%, var(--accent-dark));
    opacity: 0.5;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-logo .logo-icon {
    width: 32px;
    height: 32px;
    border: 2px solid var(--accent);
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: bold;
    color: var(--accent);
    position: relative;
}

.nav-logo .logo-icon::before {
    content: '';
    position: absolute;
    inset: 2px;
    border: 1px solid rgba(201,136,58,0.3);
    border-radius: 1px;
}

.nav-logo h2 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.nav-logo h2 span { color: var(--accent); }

.nav-links {
    display: flex;
    gap: 6px;
    align-items: center;
}

/* Nav tabs */
.nav-tab {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    padding: 8px 16px;
    cursor: pointer;
    font-family: var(--font-ui);
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    border-radius: var(--radius);
    transition: all var(--transition);
    position: relative;
}

.nav-tab:hover {
    color: var(--text-primary);
    background: var(--bg-card);
}

.nav-tab.active {
    color: var(--accent);
    border-color: var(--border-gold);
    background: rgba(201,136,58,0.08);
}

.nav-tab.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 8px;
    right: 8px;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
}

.nav-points {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-gold);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    padding: 4px 12px;
    height: 30px;
    box-sizing: border-box;
    background: rgba(201,136,58,0.08);
    border: 1px solid var(--border-gold);
    border-radius: var(--radius);
    margin-left: 12px;
}

.nav-points .points-icon {
    font-size: 14px;
    line-height: 1;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    padding: 4px 12px;
    height: 30px;
    box-sizing: border-box;
    background: rgba(212,212,216,0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    margin-left: 12px;
}

.nav-user .user-icon {
    font-size: 14px;
    line-height: 1;
}

.nav-username-trigger {
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius);
    transition: background var(--transition);
}

.nav-username-trigger:hover {
    background: rgba(201, 136, 58, 0.1);
}

.user-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    min-width: 140px;
    z-index: 100;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.user-dropdown.show {
    display: block;
}

.user-dropdown a {
    display: block;
    padding: 10px 14px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: all 0.15s;
}

.user-dropdown a:hover {
    background: rgba(201, 136, 58, 0.1);
    color: var(--accent);
}

.nav-user {
    position: relative;
}

.nav-user #navUsername {
    color: var(--text-gold-bright);
    font-weight: 600;
    letter-spacing: 0.5px;
}

.auth-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 16px;
    cursor: pointer;
    font-size: 0.85rem;
    border-radius: var(--radius);
    transition: all var(--transition);
    margin-left: 6px;
    font-family: var(--font-ui);
}

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

.auth-btn.register {
    background: var(--accent);
    border-color: var(--accent);
    color: #1a1a18;
    font-weight: 600;
}

.auth-btn.register:hover {
    background: var(--accent-hover);
}

/* ===== Main Content Layout ===== */
.main-content {
    padding: 24px 0;
}

/* ===== Page Section ===== */
.page-section {
    display: none;
    animation: fadeSlideIn 0.3s ease;
}

.page-section.active {
    display: block;
}

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

/* ===== Section Header ===== */
.section-header {
    margin-bottom: 28px;
    position: relative;
}

.section-header h2 {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 1px;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-header h2::before {
    content: '';
    width: 3px;
    height: 22px;
    background: var(--accent);
    border-radius: 2px;
}

.section-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 4px;
    margin-left: 15px;
}

/* ===== Cards ===== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 16px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-glow-strong), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

.card:hover::before { opacity: 0.5; }

.card:hover {
    border-color: var(--border-active);
    background: var(--bg-card-hover);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.card-header h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.5px;
}

/* ===== Icon Button Grid (Function/ECU Type 选择) ===== */
.icon-btn-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    margin-top: 6px;
}

.icon-btn-grid-small {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
}

.icon-btn {
    background: var(--bg-input);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 18px 12px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    transition: all var(--transition);
    text-align: center;
    user-select: none;
    position: relative;
    min-height: 100px;
}

.icon-btn:hover {
    border-color: var(--accent);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.icon-btn.disabled {
    cursor: not-allowed;
    opacity: 0.45;
    pointer-events: none;
    filter: grayscale(0.6);
}

.icon-btn.disabled:hover {
    border-color: var(--border-color);
    background: var(--bg-input);
    transform: none;
    box-shadow: none;
}

.icon-btn.selected {
    border-color: var(--accent);
    background: rgba(201, 136, 58, 0.1);
    box-shadow: 0 0 0 3px var(--accent-glow), 0 4px 16px rgba(201, 136, 58, 0.2);
}

.icon-btn.selected::after {
    content: '\2713';
    position: absolute;
    top: 6px;
    right: 8px;
    width: 20px;
    height: 20px;
    background: var(--accent);
    color: #1a1a18;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
}

.icon-btn-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(224, 85, 85, 0.08);
    border: 1px solid rgba(224, 85, 85, 0.2);
    border-radius: 8px;
    color: var(--text-error);
    transition: all var(--transition);
}

.icon-btn.selected .icon-btn-icon {
    background: rgba(201, 136, 58, 0.15);
    border-color: var(--accent);
    color: var(--accent);
}

.icon-btn-icon svg {
    display: block;
}

.icon-btn-label {
    color: var(--text-primary);
    font-size: 0.82rem;
    font-weight: 600;
    line-height: 1.4;
}

.icon-btn-label small {
    color: var(--text-muted);
    font-size: 0.7rem;
    font-weight: 400;
    font-family: var(--font-mono);
    letter-spacing: 0.5px;
}

/* ECU Type 简化样式 */
.icon-btn-grid-small .icon-btn {
    min-height: 70px;
    padding: 12px 8px;
}

.icon-btn-grid-small .icon-btn-icon {
    width: 36px;
    height: 36px;
}

.icon-btn-grid-small .icon-btn-label {
    font-size: 0.72rem;
}

.icon-btn-grid-small .icon-btn-label small {
    display: none;
}

/* ECU Group header */
.icon-btn-group-label {
    grid-column: 1 / -1;
    color: var(--accent);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 600;
    padding: 8px 4px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 4px;
}

/* ===== Feature/Service Cards ===== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
}

.feature-card:hover {
    border-color: var(--accent);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

.feature-card .card-icon {
    width: 44px;
    height: 44px;
    border: 2px solid var(--accent);
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 16px;
    color: var(--accent);
    background: rgba(201,136,58,0.08);
}

.feature-card h3 {
    font-size: 1.05rem;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-weight: 600;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.5;
}

.feature-card .price-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: 14px;
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-gold);
}

.feature-card .price-tag small {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 400;
}

.feature-card .card-actions {
    display: flex;
    gap: 8px;
    margin-top: 16px;
}

.feature-card.subscribed {
    border-color: var(--accent-dark);
}

.feature-card.subscribed::after {
    content: 'ACTIVE';
    position: absolute;
    top: 12px;
    right: 12px;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-success);
    background: rgba(90,173,90,0.1);
    border: 1px solid rgba(90,173,90,0.3);
    padding: 2px 8px;
    border-radius: 2px;
    letter-spacing: 1px;
}

/* ===== Forms ===== */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.form-group label .required {
    color: var(--text-gold);
    margin-left: 2px;
}

.form-group label .optional {
    color: var(--text-muted);
    font-weight: 400;
    text-transform: none;
    font-size: 0.75rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
select {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-family: var(--font-ui);
    font-size: 0.9rem;
    transition: all var(--transition);
    outline: none;
}

input:focus, select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

input::placeholder {
    color: var(--text-muted);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-family: var(--font-ui);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    letter-spacing: 0.3px;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #1a1a18;
    font-weight: 600;
}

.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 0 20px var(--accent-glow);
}

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

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

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

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

.btn-sm {
    padding: 6px 14px;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

.btn-danger {
    background: transparent;
    border-color: var(--text-error);
    color: var(--text-error);
}

.btn-danger:hover {
    background: rgba(224,85,85,0.1);
}

.btn-success {
    background: var(--text-success);
    border-color: var(--text-success);
    color: #fff;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.btn-block {
    width: 100%;
}

/* ===== Code Verify Button ===== */
.code-btn {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--accent);
    padding: 10px 16px;
    cursor: pointer;
    font-size: 0.82rem;
    border-radius: var(--radius);
    white-space: nowrap;
    transition: all var(--transition);
    font-family: var(--font-ui);
    min-width: 100px;
}

.code-btn:hover { border-color: var(--accent); }
.code-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.verification-row {
    display: flex;
    gap: 10px;
}

.verification-row input {
    flex: 1;
}

/* ===== Upload Area (Drag & Drop) ===== */
.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background: var(--bg-input);
    position: relative;
}

.upload-zone:hover,
.upload-zone.drag-over {
    border-color: var(--accent);
    background: rgba(201,136,58,0.05);
}

.upload-zone.drag-over {
    border-style: solid;
    box-shadow: 0 0 30px var(--accent-glow);
}

.upload-zone .upload-icon {
    font-size: 48px;
    margin-bottom: 12px;
    color: var(--text-muted);
}

.upload-zone.drag-over .upload-icon {
    color: var(--accent);
}

.upload-zone .upload-text {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 8px;
}

.upload-zone .upload-hint {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.upload-zone input[type="file"] {
    display: none;
}

.upload-file-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    margin-top: 12px;
}

.upload-file-info .file-name {
    flex: 1;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.upload-file-info .file-size {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.upload-file-info .remove-file {
    color: var(--text-error);
    cursor: pointer;
    font-size: 18px;
    line-height: 1;
}

/* ===== Custom Select ===== */
.custom-select {
    position: relative;
    user-select: none;
}

.select-trigger {
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition);
}

.select-trigger::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 6px solid var(--text-muted);
}

.select-trigger:hover { border-color: var(--text-secondary); }

.select-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 var(--radius) var(--radius);
    max-height: 240px;
    overflow-y: auto;
    z-index: 50;
    box-shadow: var(--shadow-lg);
}

.select-dropdown.show { display: block; }

.custom-select.open .select-trigger {
    border-radius: var(--radius) var(--radius) 0 0;
    border-bottom-color: transparent;
}

.select-group {
    padding: 10px 14px 6px;
    color: var(--accent);
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 700;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    user-select: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background var(--transition);
}

.select-group:hover {
    background: rgba(201, 136, 58, 0.06);
}

.group-arrow {
    display: inline-block;
    font-size: 0.8rem;
    color: var(--text-gold);
    transition: transform 0.2s ease;
}

.select-group:not(.collapsed) .group-arrow {
    transform: rotate(90deg);
}

.select-item {
    padding: 8px 14px 8px 30px;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.78rem;
    transition: all 0.15s;
    font-family: var(--font-mono);
}

.select-item.group-collapsed {
    display: none;
}

.select-item:hover {
    background: rgba(201,136,58,0.08);
    color: var(--text-primary);
}

.select-item.selected {
    color: var(--accent);
    background: rgba(201,136,58,0.1);
}

/* ===== Searchable Dropdown ===== */
.select-dropdown-search {
    max-height: 300px;
    overflow: hidden;
    display: none;
    flex-direction: column;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 var(--radius) var(--radius);
    margin-top: -1px;  /* 紧贴 trigger */
}

.select-dropdown-search.show {
    display: flex;
}

.select-search-box {
    position: relative;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-input);
}

.select-search-box input {
    width: 100%;
    padding: 8px 10px 8px 34px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.85rem;
    outline: none;
    transition: border-color var(--transition);
}

.select-search-box input:focus {
    border-color: var(--accent);
}

.select-search-box input::placeholder {
    color: var(--text-muted);
}

.select-list {
    flex: 1;
    overflow-y: auto;
    max-height: 240px;
}

.select-empty {
    padding: 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ===== Modal ===== */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.75);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

.modal-overlay.show {
    display: flex;
}

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 460px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    position: relative;
    animation: modalIn 0.2s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95) translateY(-10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px 16px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    color: var(--text-primary);
    letter-spacing: 1px;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-muted);
    font-size: 20px;
    cursor: pointer;
    border-radius: var(--radius);
    transition: all var(--transition);
}

.modal-close:hover {
    color: var(--text-primary);
    border-color: var(--border-color);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* ===== Stats Dashboard ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    position: relative;
    overflow: hidden;
}

.stat-card::after {
    content: '';
    position: absolute;
    right: -20px;
    bottom: -20px;
    width: 80px;
    height: 80px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    opacity: 0.3;
}

.stat-card .stat-label {
    color: var(--text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.stat-card .stat-value {
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.stat-card.accent .stat-value { color: var(--accent); }
.stat-card.success .stat-value { color: var(--text-success); }
.stat-card.warning .stat-value { color: var(--text-warning); }

/* ===== Table ===== */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.data-table th {
    text-align: left;
    padding: 8px 12px;
    background: var(--bg-input);
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-bottom: 2px solid var(--border-color);
    vertical-align: top;
}

.data-table th select,
.data-table th input {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.7rem;
    font-weight: 400;
    text-transform: none;
    letter-spacing: 0;
}

.data-table th select:focus,
.data-table th input:focus {
    outline: none;
    border-color: var(--accent);
}

.data-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.82rem;
}

.data-table tbody tr:hover {
    background: rgba(201,136,58,0.04);
}

/* ===== Status Badges ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 3px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.badge-active { background: rgba(90,173,90,0.15); color: var(--text-success); border: 1px solid rgba(90,173,90,0.3); }
.badge-expired { background: rgba(224,85,85,0.1); color: var(--text-error); border: 1px solid rgba(224,85,85,0.2); }
.badge-trial { background: rgba(201,154,48,0.1); color: var(--text-warning); border: 1px solid rgba(201,154,48,0.2); }
.badge-pending { background: rgba(201,136,58,0.1); color: var(--text-gold); border: 1px solid rgba(201,136,58,0.2); }
.badge-recharge { background: rgba(201,136,58,0.1); color: var(--text-gold-bright); }
.badge-consumption { background: rgba(224,85,85,0.1); color: var(--text-error); }

.badge-num {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 4px 10px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-gold);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* ===== Toast Notification ===== */
#toastContainer {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3000;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    pointer-events: none;
    max-width: min(90vw, 560px);
}
.toast {
    position: relative;
    padding: 14px 28px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    animation: toastIn 0.3s ease;
    max-width: 520px;
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
    cursor: pointer;
    text-align: center;
    line-height: 1.45;
    /* 覆盖 styles.css 的 .toast { opacity:0 }：动画结束后必须保持可见，
       否则 toast 会在 0.3s 动画完成后立即消失（一闪而过） */
    opacity: 1;
}

.toast-success { background: #1a3a1a; border: 1px solid var(--text-success); color: var(--text-success); }
.toast-error { background: #3a1a1a; border: 1px solid var(--text-error); color: var(--text-error); }
.toast-info { background: #1a1a3a; border: 1px solid var(--accent); color: var(--accent); }

@keyframes toastIn {
    from { opacity: 0; transform: translateY(-14px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== Pagination ===== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    padding: 12px 0;
}

.page-btn {
    padding: 6px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius);
    font-size: 0.82rem;
    transition: all var(--transition);
}

.page-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.page-btn:disabled { opacity: 0.3; cursor: not-allowed; }

.page-info {
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 0 12px;
}

/* ===== Search ===== */
.search-box {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.search-box input {
    flex: 1;
    max-width: 320px;
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state .empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.4;
}

.empty-state h3 {
    color: var(--text-secondary);
    margin-bottom: 8px;
}

/* ===== Loading ===== */
.loading-spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ===== Result Section ===== */
.result-section {
    margin-top: 24px;
}

/* ===== Bosch Label Example ===== */
.label-example-wrapper {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 32px;
    align-items: center;
}

.label-image-container {
    position: relative;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 16px;
    min-height: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.label-image-container img {
    max-width: 100%;
    max-height: 300px;
    border-radius: 4px;
    display: block;
}

.label-missing {
    text-align: center;
    color: var(--text-muted);
    padding: 40px 20px;
    font-size: 0.9rem;
}

.label-missing small {
    color: var(--text-muted);
    font-size: 0.75rem;
    display: block;
    margin-top: 8px;
}

.label-explanation h4 {
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.label-info-list {
    list-style: none;
    padding: 0;
    margin: 0 0 16px 0;
}

.label-info-list li {
    display: flex;
    flex-direction: column;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.82rem;
}

.label-info-list .info-key {
    color: var(--text-gold);
    font-weight: 600;
    margin-bottom: 2px;
}

.label-info-list .info-val {
    color: var(--text-secondary);
    font-size: 0.78rem;
    padding-left: 8px;
    border-left: 2px solid var(--border-gold);
}

@media (max-width: 768px) {
    .label-example-wrapper {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

.result-message {
    padding: 16px 20px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 0.9rem;
    font-weight: 500;
}

.result-message.success {
    background: rgba(90,173,90,0.1);
    border: 1px solid rgba(90,173,90,0.3);
    color: var(--text-success);
}

.result-message.error {
    background: rgba(224,85,85,0.1);
    border: 1px solid rgba(224,85,85,0.3);
    color: var(--text-error);
}

.result-message.info {
    background: rgba(201,136,58,0.1);
    border: 1px solid rgba(201,136,58,0.3);
    color: var(--text-gold);
}

/* ===== Download Button ===== */
.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--accent);
    color: #1a1a18;
    text-decoration: none;
    font-weight: 600;
    border-radius: var(--radius);
    transition: all var(--transition);
    margin-top: 16px;
}

.download-btn:hover {
    background: var(--accent-hover);
    box-shadow: 0 0 20px var(--accent-glow);
}

/* ===== Toggle Switch ===== */
.toggle-switch {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.toggle-switch input {
    display: none;
}

.toggle-labels {
    display: flex;
    gap: 4px;
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.toggle-slider {
    width: 36px;
    height: 20px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    position: relative;
    transition: all var(--transition);
}

.toggle-slider::after {
    content: '';
    position: absolute;
    width: 14px;
    height: 14px;
    top: 2px;
    left: 2px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: all var(--transition);
}

/* 滑块轨道颜色 - 基于服务器返回的 data-status */
.toggle-switch[data-status="ON"] .toggle-slider {
    border-color: var(--text-success);
    background: rgba(90,173,90,0.2);
    box-shadow: 0 0 10px rgba(90,173,90,0.3);
}

.toggle-switch[data-status="ON"] .toggle-slider::after {
    background: var(--text-success);
    box-shadow: 0 0 6px var(--text-success);
}

/* 滑块在右（禁用状态）- 红色 */
.toggle-switch[data-status="OFF"] .toggle-slider {
    border-color: var(--text-error);
    background: rgba(224,85,85,0.15);
}

.toggle-switch input:checked + .toggle-slider::after {
    left: 18px;
}

.toggle-switch[data-status="OFF"] .toggle-slider::after {
    left: 18px;
    background: var(--text-error);
}

/* ON/OFF 标签点亮 - 基于服务器返回的 data-status */
.toggle-switch[data-status="ON"] .on-label {
    color: var(--text-success);
    text-shadow: 0 0 6px rgba(90,173,90,0.5);
}

.toggle-switch[data-status="OFF"] .off-label {
    color: var(--text-error);
    text-shadow: 0 0 6px rgba(224,85,85,0.4);
}

/* ===== 已编程关闭锁定状态 ===== */
.toggle-switch.locked {
    cursor: not-allowed;
}

.toggle-switch.locked .toggle-slider {
    border-style: dashed;
    border-width: 1px;
}

.locked-badge {
    display: none;
}

/* ===== Utility ===== */
.text-accent { color: var(--accent); }
.text-success { color: var(--text-success); }
.text-error { color: var(--text-error); }
.text-muted { color: var(--text-muted); }
.text-mono { font-family: var(--font-mono); }
.text-right { text-align: right; }
.text-center { text-align: center; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-2 { margin-bottom: 16px; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 16px; }

/* ===== Footer ===== */
.footer {
    text-align: center;
    padding: 30px 0;
    color: var(--text-muted);
    font-size: 0.8rem;
    border-top: 1px solid var(--border-color);
    margin-top: 40px;
}

.footer span { color: var(--accent); }

/* ===== Price / Recharge Cards ===== */
.recharge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
}

.recharge-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px 16px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
}

.recharge-card:hover {
    border-color: var(--accent);
    background: var(--bg-card-hover);
}

.recharge-card.selected {
    border-color: var(--accent);
    border-width: 2px;
    background: rgba(201,136,58,0.06);
}

.recharge-card .rc-points {
    font-family: var(--font-mono);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-gold);
}

.recharge-card .rc-rmb {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 4px;
}

.recharge-card .rc-rate {
    color: var(--text-secondary);
    font-size: 0.7rem;
    margin-top: 4px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .navbar {
        padding: 10px 16px;
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .nav-logo h2 { font-size: 0.95rem; }
    
    .nav-links {
        order: 3;
        width: 100%;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 4px;
    }
    
    .nav-tab { font-size: 0.75rem; padding: 6px 10px; }
    
    .nav-points { font-size: 0.75rem; padding: 4px 10px; }
    
    .feature-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .recharge-grid { grid-template-columns: 1fr 1fr; }
    
    .modal { max-width: 95%; }
    
    .data-table { font-size: 0.75rem; }
    .data-table th, .data-table td { padding: 8px 10px; }
    
    .upload-zone { padding: 32px 16px; }
    
    .section-header h2 { font-size: 1.2rem; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .recharge-grid { grid-template-columns: 1fr 1fr; }
    
    .stat-card .stat-value { font-size: 1.4rem; }
    
    .btn { padding: 8px 14px; font-size: 0.82rem; }
    
    .card { padding: 16px; }
}