/* ===== CSS 变量（主题系统） ===== */
:root {
    /* 品牌色 */
    --mc-primary: #2563eb;
    --mc-primary-hover: #1d4ed8;
    --mc-primary-light: #f0f5ff;
    /* 功能色 */
    --mc-danger: #ef4444;
    --mc-danger-hover: #dc2626;
    --mc-warning: #e67e22;
    /* 背景 */
    --mc-bg: #f5f5f5;
    --mc-bg-card: #fff;
    --mc-bg-toolbar: #fff;
    /* 文字 */
    --mc-text: #1a1a1a;
    --mc-text-secondary: #555;
    --mc-text-muted: #999;
    --mc-text-hint: #888;
    /* 边框 */
    --mc-border: #e5e7eb;
    --mc-border-dashed: #ccc;
    /* 切割线 */
    --mc-cutline: #e74c3c;
    --mc-cutline-boundary: #e67e22;
    /* 占位 */
    --mc-placeholder-bg: #e5e7eb;
    /* Toast */
    --mc-toast-bg: #333;
    --mc-toast-text: #fff;
    --mc-toast-error-bg: #dc2626;
    --mc-toast-action: #93c5fd;
    /* 阴影 */
    --mc-shadow: 0 1px 3px rgba(0,0,0,0.08);
    /* 圆角 */
    --mc-radius-sm: 4px;
    --mc-radius: 8px;
    --mc-radius-lg: 12px;
    --mc-radius-xl: 16px;
    /* 字体 */
    --mc-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    /* 提示栏 */
    --mc-hint-bg: rgba(255,255,255,0.95);
}

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

html {
    font-family: var(--mc-font);
    font-size: 16px;
    line-height: 1.5;
    color: var(--mc-text);
    background: var(--mc-bg);
    -webkit-text-size-adjust: 100%;
}

body {
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
}

/* ===== View System ===== */
.mc-view {
    display: none;
    min-height: 100vh;
    min-height: 100dvh;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mc-view--active {
    display: block;
    opacity: 1;
}

.mc-view--entering {
    display: block;
    opacity: 0;
}

/* ===== Buttons ===== */
.mc-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--mc-radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, opacity 0.2s, transform 0.1s;
    font-family: var(--mc-font);
    -webkit-tap-highlight-color: transparent;
}

.mc-btn:active {
    transform: scale(0.97);
}

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

.mc-btn--primary {
    background: var(--mc-primary);
    color: #fff;
}

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

.mc-btn--ghost {
    background: transparent;
    color: var(--mc-text-secondary);
}

.mc-btn--ghost:hover {
    background: rgba(128,128,128,0.08);
}

.mc-btn--danger {
    background: var(--mc-danger);
    color: #fff;
}

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

/* ===== Upload Page ===== */
.mc-upload__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    min-height: 100dvh;
    padding: 40px 20px;
}

.mc-upload__title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--mc-text);
}

.mc-upload__subtitle {
    font-size: 15px;
    color: var(--mc-text-muted);
    margin-bottom: 12px;
    text-align: center;
}

.mc-upload__privacy {
    max-width: 520px;
    margin-bottom: 28px;
    padding: 10px 14px;
    border: 1px solid var(--mc-border);
    border-radius: var(--mc-radius);
    background: var(--mc-bg-card);
    color: var(--mc-text-secondary);
    font-size: 13px;
    text-align: center;
}

.mc-upload__dropzone {
    position: relative;
    width: 100%;
    max-width: 520px;
    padding: 60px 40px;
    border: 2px dashed var(--mc-border-dashed);
    border-radius: var(--mc-radius-xl);
    background: var(--mc-bg-card);
    text-align: center;
    transition: border-color 0.25s, background 0.25s, transform 0.2s, box-shadow 0.25s;
    cursor: pointer;
}

.mc-upload__dropzone:hover {
    border-color: var(--mc-primary);
    background: var(--mc-primary-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.1);
}

.mc-upload__dropzone--dragover {
    border-color: var(--mc-primary);
    background: var(--mc-primary-light);
    transform: scale(1.02);
    box-shadow: 0 12px 32px rgba(37, 99, 235, 0.15);
    border-style: solid;
}

.mc-upload__file-input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.mc-upload__icon {
    width: 48px;
    height: 48px;
    color: var(--mc-text-muted);
    margin-bottom: 16px;
}

.mc-upload__dropzone-text {
    font-size: 16px;
    font-weight: 500;
    color: var(--mc-text);
    margin-bottom: 8px;
}

.mc-upload__dropzone-hint {
    font-size: 13px;
    color: var(--mc-text-muted);
}

.mc-upload__guidance {
    max-width: 520px;
    margin-top: 16px;
    color: var(--mc-text-muted);
    font-size: 13px;
    text-align: center;
}

.mc-upload__repo-link {
    margin-top: 10px;
    color: var(--mc-primary);
    font-size: 13px;
    text-decoration: none;
}

.mc-upload__repo-link:hover {
    text-decoration: underline;
}

/* ===== Processing Page ===== */
.mc-processing__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    min-height: 100dvh;
    padding: 40px 20px;
    max-width: 700px;
    margin: 0 auto;
}

.mc-processing__progress-bar {
    width: 100%;
    height: 8px;
    background: var(--mc-border);
    border-radius: var(--mc-radius-sm);
    overflow: hidden;
    margin-bottom: 16px;
}

.mc-processing__step {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.mc-processing__progress-fill {
    height: 100%;
    width: 0%;
    background: var(--mc-primary);
    border-radius: var(--mc-radius-sm);
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.mc-processing__progress-fill::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.3) 50%,
        transparent 100%
    );
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.mc-processing__text {
    font-size: 15px;
    color: var(--mc-text-secondary);
    margin-bottom: 24px;
}

.mc-processing__preview {
    width: 100%;
    max-height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 16px;
    overflow: hidden;
}

.mc-processing__preview img {
    max-width: 100%;
    max-height: 300px;
    object-fit: contain;
    border-radius: var(--mc-radius);
    opacity: 0;
    transition: opacity 0.2s;
}

.mc-processing__queue {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    width: 100%;
    padding: 8px 0;
    margin-bottom: 16px;
}

.mc-processing__queue-thumb {
    height: 80px;
    border-radius: var(--mc-radius-sm);
    flex-shrink: 0;
    animation: slideIn 0.3s ease;
}

.mc-processing__queue-placeholder {
    height: 80px;
    width: 56px;
    background: var(--mc-placeholder-bg);
    border-radius: var(--mc-radius-sm);
    flex-shrink: 0;
}

.mc-processing__eta {
    font-size: 13px;
    color: var(--mc-text-hint);
    margin-bottom: 24px;
}

@keyframes slideIn {
    from { transform: translateX(30px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ===== Editor Page ===== */
.mc-editor__toolbar {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 20px;
    background: var(--mc-bg-toolbar);
    border-bottom: 1px solid var(--mc-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.mc-editor__stats {
    font-size: 14px;
    color: var(--mc-text-secondary);
}

.mc-editor__pages {
    padding: 20px;
    max-width: 700px;
    margin: 0 auto;
}

.mc-editor__page-card {
    background: var(--mc-bg-card);
    border-radius: var(--mc-radius-lg);
    padding: 16px;
    margin-bottom: 20px;
    box-shadow: var(--mc-shadow);
}

.mc-editor__page-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--mc-text);
    margin-bottom: 4px;
}

.mc-editor__page-confidence {
    font-size: 13px;
    color: var(--mc-warning);
    margin-bottom: 8px;
}

.mc-editor__image-container {
    position: relative;
    display: inline-block;
    width: 100%;
}

.mc-editor__image-container img {
    display: block;
    width: 100%;
    max-width: 600px;
    user-select: none;
    -webkit-user-drag: none;
}

.mc-editor__overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.mc-editor__cutline {
    position: absolute;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--mc-cutline);
    cursor: ns-resize;
}

.mc-editor__cutline::before {
    content: '';
    position: absolute;
    top: -14px;
    bottom: -14px;
    left: 0;
    right: 0;
}

.mc-editor__cutline-delete {
    position: absolute;
    right: -32px;
    top: 50%;
    transform: translateY(-50%);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: none;
    background: var(--mc-cutline);
    color: #fff;
    font-size: 14px;
    line-height: 1;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.15s;
}

.mc-editor__cutline:hover .mc-editor__cutline-delete {
    opacity: 1;
}

@media (hover: none), (pointer: coarse) {
    .mc-editor__cutline-delete {
        opacity: 0.6;
        width: 20px;
        height: 20px;
        font-size: 12px;
    }
}

.mc-editor__hint {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px 20px;
    background: var(--mc-hint-bg);
    border-top: 1px solid var(--mc-border);
    text-align: center;
    font-size: 13px;
    color: var(--mc-text-hint);
}

.mc-editor__hint-mobile {
    display: none;
}

@media (hover: none), (pointer: coarse) {
    .mc-editor__hint-pc { display: none; }
    .mc-editor__hint-mobile { display: inline; }
}

/* ===== Preview Page ===== */
.mc-preview__toolbar {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 20px;
    background: var(--mc-bg-toolbar);
    border-bottom: 1px solid var(--mc-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.mc-preview__stats {
    font-size: 14px;
    color: var(--mc-text-secondary);
}

.mc-preview__format {
    display: flex;
    gap: 12px;
    font-size: 14px;
    color: var(--mc-text-secondary);
}

.mc-preview__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 12px;
    padding: 20px;
    max-width: 900px;
    margin: 0 auto;
}

.mc-preview__card {
    background: var(--mc-bg-card);
    border-radius: var(--mc-radius);
    overflow: hidden;
    box-shadow: var(--mc-shadow);
}

.mc-preview__card img {
    width: 100%;
    display: block;
}

.mc-preview__card-name {
    padding: 8px 12px;
    font-size: 13px;
    color: var(--mc-text-secondary);
    border-top: 1px solid var(--mc-border);
}

@media (max-width: 640px) {
    .mc-preview__grid {
        grid-template-columns: 1fr;
    }

    .mc-upload__dropzone {
        padding: 40px 24px;
    }

    .mc-upload__title {
        font-size: 24px;
    }

    .mc-editor__toolbar {
        flex-wrap: wrap;
        gap: 8px;
    }
}

/* ===== Editor page card improvements ===== */
.mc-editor__page-card {
    animation-fill-mode: both;
}

.mc-editor__image-container img {
    aspect-ratio: auto;
    background: var(--mc-bg);
}

/* ===== Print-friendly (for downloaded images) ===== */
@media print {
    .mc-theme-switcher,
    .mc-toast-container,
    .mc-editor__hint {
        display: none !important;
    }
}

/* ===== Toast ===== */
.mc-toast-container {
    position: fixed;
    bottom: 60px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    display: flex;
    flex-direction: column-reverse;
    gap: 8px;
    max-width: 400px;
    width: 90%;
}

.mc-toast {
    padding: 12px 16px;
    background: var(--mc-toast-bg);
    color: var(--mc-toast-text);
    border-radius: var(--mc-radius);
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    animation: toastIn 0.3s ease;
}

.mc-toast--error {
    background: var(--mc-toast-error-bg);
}

.mc-toast__undo {
    background: none;
    border: none;
    color: var(--mc-toast-action);
    cursor: pointer;
    font-size: 13px;
    margin-left: 12px;
    flex-shrink: 0;
}

@keyframes toastIn {
    from { transform: translateY(16px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes toastOut {
    from { transform: translateY(0); opacity: 1; }
    to { transform: translateY(16px); opacity: 0; }
}

/* ===== Loading Spinner ===== */
.mc-spinner {
    width: 28px;
    height: 28px;
    border: 3px solid var(--mc-border);
    border-top-color: var(--mc-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: inline-block;
    vertical-align: middle;
    margin-right: 8px;
}

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

/* ===== Fade transition helper ===== */
.mc-fade-in {
    animation: fadeIn 0.35s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== Global drag state ===== */
.mc-dragging {
    cursor: ns-resize !important;
    user-select: none !important;
}

/* ===== Theme Switcher ===== */
.mc-theme-switcher {
    position: fixed;
    top: 12px;
    right: 12px;
    z-index: 200;
    display: flex;
    gap: 6px;
    padding: 6px 10px;
    background: var(--mc-bg-card);
    border: 1px solid var(--mc-border);
    border-radius: var(--mc-radius-lg);
    box-shadow: var(--mc-shadow);
    font-size: 13px;
}

.mc-theme-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: border-color 0.2s, transform 0.15s;
    position: relative;
}

.mc-theme-btn:hover {
    transform: scale(1.15);
}

.mc-theme-btn--active {
    border-color: var(--mc-text);
}

.mc-theme-btn[data-theme="default"] {
    background: linear-gradient(135deg, #2563eb 50%, #f5f5f5 50%);
}

.mc-theme-btn[data-theme="midnight"] {
    background: linear-gradient(135deg, #6366f1 50%, #1e1e2e 50%);
}

.mc-theme-btn[data-theme="ink"] {
    background: linear-gradient(135deg, #8b4513 50%, #f5f0e8 50%);
}

.mc-theme-btn[data-theme="candy"] {
    background: linear-gradient(135deg, #ec4899 50%, #fdf2f8 50%);
}

.mc-theme-btn[data-theme="mono"] {
    background: linear-gradient(135deg, #171717 50%, #fafafa 50%);
}

.mc-theme-label {
    display: none;
}

@media (min-width: 480px) {
    .mc-theme-label {
        display: inline;
        color: var(--mc-text-muted);
        font-size: 12px;
        line-height: 28px;
        margin-right: 4px;
    }
}

/* ===== Theme: 默认 (default) — 无需覆盖，:root 就是默认 ===== */

/* ===== Theme: 暗夜 (midnight) ===== */
[data-theme="midnight"] {
    --mc-primary: #6366f1;
    --mc-primary-hover: #4f46e5;
    --mc-primary-light: rgba(99,102,241,0.12);
    --mc-danger: #f87171;
    --mc-danger-hover: #ef4444;
    --mc-warning: #fbbf24;
    --mc-bg: #11111b;
    --mc-bg-card: #1e1e2e;
    --mc-bg-toolbar: rgba(30,30,46,0.85);
    --mc-text: #cdd6f4;
    --mc-text-secondary: #a6adc8;
    --mc-text-muted: #6c7086;
    --mc-text-hint: #7f849c;
    --mc-border: #313244;
    --mc-border-dashed: #45475a;
    --mc-cutline: #f38ba8;
    --mc-cutline-boundary: #fab387;
    --mc-placeholder-bg: #313244;
    --mc-toast-bg: #45475a;
    --mc-toast-text: #cdd6f4;
    --mc-toast-error-bg: #f38ba8;
    --mc-toast-action: #89b4fa;
    --mc-shadow: 0 2px 8px rgba(0,0,0,0.4);
    --mc-hint-bg: rgba(30,30,46,0.92);
}

/* ===== Theme: 纸墨 (ink) ===== */
[data-theme="ink"] {
    --mc-primary: #8b4513;
    --mc-primary-hover: #6b3410;
    --mc-primary-light: #faf3eb;
    --mc-danger: #c0392b;
    --mc-danger-hover: #a93226;
    --mc-warning: #d4a017;
    --mc-bg: #f5f0e8;
    --mc-bg-card: #fffdf7;
    --mc-bg-toolbar: rgba(255,253,247,0.92);
    --mc-text: #2c1810;
    --mc-text-secondary: #5a4a3a;
    --mc-text-muted: #8a7a6a;
    --mc-text-hint: #7a6a5a;
    --mc-border: #d4c4a8;
    --mc-border-dashed: #c4b498;
    --mc-cutline: #c0392b;
    --mc-cutline-boundary: #d4a017;
    --mc-placeholder-bg: #e8dcc8;
    --mc-toast-bg: #3a2a1a;
    --mc-toast-text: #f5f0e8;
    --mc-toast-error-bg: #c0392b;
    --mc-toast-action: #d4a017;
    --mc-shadow: 0 1px 4px rgba(44,24,16,0.1);
    --mc-radius-sm: 2px;
    --mc-radius: 4px;
    --mc-radius-lg: 8px;
    --mc-radius-xl: 12px;
    --mc-font: "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", Georgia, "Times New Roman", serif;
    --mc-hint-bg: rgba(255,253,247,0.95);
}

/* ===== Theme: 糖果 (candy) ===== */
[data-theme="candy"] {
    --mc-primary: #ec4899;
    --mc-primary-hover: #db2777;
    --mc-primary-light: #fdf2f8;
    --mc-danger: #ef4444;
    --mc-danger-hover: #dc2626;
    --mc-warning: #f59e0b;
    --mc-bg: #fef7ff;
    --mc-bg-card: #fff;
    --mc-bg-toolbar: rgba(255,255,255,0.88);
    --mc-text: #1f1225;
    --mc-text-secondary: #6b5a7a;
    --mc-text-muted: #a89bb5;
    --mc-text-hint: #9a8aaa;
    --mc-border: #f0d0e8;
    --mc-border-dashed: #e8c0d8;
    --mc-cutline: #ef4444;
    --mc-cutline-boundary: #f59e0b;
    --mc-placeholder-bg: #fce7f3;
    --mc-toast-bg: #4a2040;
    --mc-toast-text: #fdf2f8;
    --mc-toast-error-bg: #ef4444;
    --mc-toast-action: #c084fc;
    --mc-shadow: 0 2px 8px rgba(236,72,153,0.1);
    --mc-radius-sm: 8px;
    --mc-radius: 14px;
    --mc-radius-lg: 18px;
    --mc-radius-xl: 24px;
}

/* ===== Theme: 极简 (mono) ===== */
[data-theme="mono"] {
    --mc-primary: #171717;
    --mc-primary-hover: #000;
    --mc-primary-light: #f5f5f5;
    --mc-danger: #171717;
    --mc-danger-hover: #000;
    --mc-warning: #525252;
    --mc-bg: #fafafa;
    --mc-bg-card: #fff;
    --mc-bg-toolbar: rgba(255,255,255,0.9);
    --mc-text: #171717;
    --mc-text-secondary: #525252;
    --mc-text-muted: #a3a3a3;
    --mc-text-hint: #737373;
    --mc-border: #e5e5e5;
    --mc-border-dashed: #d4d4d4;
    --mc-cutline: #171717;
    --mc-cutline-boundary: #525252;
    --mc-placeholder-bg: #e5e5e5;
    --mc-toast-bg: #171717;
    --mc-toast-text: #fafafa;
    --mc-toast-error-bg: #404040;
    --mc-toast-action: #a3a3a3;
    --mc-shadow: 0 1px 2px rgba(0,0,0,0.05);
    --mc-radius-sm: 0;
    --mc-radius: 0;
    --mc-radius-lg: 0;
    --mc-radius-xl: 0;
    --mc-font: "SF Mono", "Fira Code", "Cascadia Code", "JetBrains Mono", "Consolas", monospace;
    --mc-hint-bg: rgba(255,255,255,0.95);
}