/* ── 基础变量 ───────────────────────────────────────────── */
:root {
    --bg: #faf9f7;
    --bg-card: #ffffff;
    --bg-hover: #f5f4f2;
    --ink: #1a1816;
    --muted: #7a756e;
    --border: #e8e5e0;
    --border-focus: #c4a882;
    --accent: #b45309;
    --accent-hover: #92400e;
    --accent-light: #fef3c7;
    --success: #0f766e;
    --success-bg: #f0fdfa;
    --error: #dc2626;
    --error-bg: #fef2f2;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.06), 0 2px 10px rgba(0,0,0,0.04);
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
    --transition: 0.2s ease;
}

/* ── 重置 ───────────────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font);
    color: var(--ink);
    background: var(--bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem 1rem;
    line-height: 1.6;
}

/* ── 容器 ───────────────────────────────────────────────── */
.container {
    width: 100%;
    max-width: 520px;
}

/* ── 头部 ───────────────────────────────────────────────── */
.header {
    text-align: center;
    margin-bottom: 2rem;
}

.header-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--accent), #d97706);
    color: white;
    margin-bottom: 1rem;
    box-shadow: 0 4px 14px rgba(180, 83, 9, 0.25);
}

.header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--ink);
    margin-bottom: 0.25rem;
}

.subtitle {
    font-size: 0.9rem;
    color: var(--muted);
}

/* ── 表单卡片 ───────────────────────────────────────────── */
.form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group:last-of-type {
    margin-bottom: 1rem;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 0.5rem;
}

.form-group label svg {
    color: var(--muted);
}

.form-hint {
    display: block;
    font-size: 0.75rem;
    color: var(--muted);
    margin-top: 0.35rem;
}

/* ── 输入框 ─────────────────────────────────────────────── */
input[type="text"] {
    width: 100%;
    padding: 0.65rem 0.9rem;
    font-size: 0.9rem;
    font-family: var(--font);
    color: var(--ink);
    background: var(--bg);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

input[type="text"]::placeholder {
    color: #b5b0a8;
}

input[type="text"]:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(196, 168, 130, 0.15);
}

input[type="text"].input-error {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

/* ── 验证码行 ───────────────────────────────────────────── */
.captcha-row {
    display: flex;
    gap: 10px;
    align-items: stretch;
}

.captcha-row input {
    flex: 1;
    min-width: 0;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.captcha-img {
    height: 42px;
    width: 140px;
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--border);
    cursor: pointer;
    object-fit: cover;
    transition: opacity var(--transition);
    flex-shrink: 0;
}

.captcha-img:hover {
    opacity: 0.85;
}

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg);
    color: var(--muted);
    cursor: pointer;
    transition: all var(--transition);
    flex-shrink: 0;
}

.btn-icon:hover {
    border-color: var(--border-focus);
    color: var(--accent);
    background: var(--accent-light);
}

/* ── 拖拽区 ─────────────────────────────────────────────── */
.dropzone {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background: var(--bg);
}

.dropzone:hover,
.dropzone.dragover {
    border-color: var(--accent);
    background: var(--accent-light);
}

.dropzone.dragover {
    transform: scale(1.01);
}

.dropzone-content {
    pointer-events: none;
}

.dropzone-icon {
    color: var(--muted);
    margin-bottom: 0.5rem;
    transition: color var(--transition);
}

.dropzone:hover .dropzone-icon,
.dropzone.dragover .dropzone-icon {
    color: var(--accent);
}

.dropzone-text {
    font-size: 0.9rem;
    color: var(--muted);
    margin-bottom: 0.35rem;
}

.dropzone-link {
    color: var(--accent);
    font-weight: 600;
    text-decoration: underline;
    text-decoration-thickness: 1.5px;
    text-underline-offset: 2px;
}

.dropzone-hint {
    font-size: 0.75rem;
    color: #b5b0a8;
    line-height: 1.5;
}

/* ── 文件列表 ───────────────────────────────────────────── */
.file-list {
    margin-bottom: 1rem;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0.6rem 0.85rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 6px;
    animation: slideIn 0.25s ease;
}

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

.file-item-icon {
    flex-shrink: 0;
    color: var(--muted);
}

.file-item-info {
    flex: 1;
    min-width: 0;
}

.file-item-name {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--ink);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-item-meta {
    font-size: 0.72rem;
    color: var(--muted);
    margin-top: 1px;
}

.file-item-status {
    flex-shrink: 0;
    font-size: 0.78rem;
    font-weight: 600;
}

.file-item-status.status-waiting {
    color: var(--muted);
}

.file-item-status.status-uploading {
    color: var(--accent);
}

.file-item-status.status-done {
    color: var(--success);
}

.file-item-status.status-error {
    color: var(--error);
}

.file-item-remove {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    transition: all var(--transition);
}

.file-item-remove:hover {
    background: var(--error-bg);
    color: var(--error);
}

/* 进度条 */
.progress-bar {
    width: 100%;
    height: 3px;
    background: var(--border);
    border-radius: 2px;
    margin-top: 6px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), #d97706);
    border-radius: 2px;
    transition: width 0.3s ease;
    width: 0%;
}

/* ── 按钮 ───────────────────────────────────────────────── */
.form-actions {
    display: flex;
    gap: 10px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0.7rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--font);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    flex: 1;
    background: linear-gradient(135deg, var(--accent), #d97706);
    color: white;
    box-shadow: 0 2px 8px rgba(180, 83, 9, 0.2);
}

.btn-primary:hover:not(:disabled) {
    box-shadow: 0 4px 14px rgba(180, 83, 9, 0.35);
    transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--bg);
    color: var(--muted);
    border: 1.5px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--border-focus);
    color: var(--ink);
    background: var(--bg-hover);
}

/* ── 结果面板 ───────────────────────────────────────────── */
.result-panel {
    margin-top: 1.25rem;
    animation: slideIn 0.3s ease;
}

.result-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    box-shadow: var(--shadow);
}

.result-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 0.75rem;
}

.result-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    flex-shrink: 0;
}

.result-icon.icon-success {
    background: var(--success-bg);
    color: var(--success);
}

.result-icon.icon-error {
    background: var(--error-bg);
    color: var(--error);
}

.result-title {
    font-size: 1rem;
    font-weight: 700;
}

.result-title.text-success {
    color: var(--success);
}

.result-title.text-error {
    color: var(--error);
}

.result-detail {
    font-size: 0.85rem;
    color: var(--muted);
    line-height: 1.7;
}

.result-detail strong {
    color: var(--ink);
    font-weight: 600;
}

.result-files {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
}

.result-file-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0.35rem 0;
    font-size: 0.82rem;
}

.result-file-item svg {
    flex-shrink: 0;
}

.result-file-item.file-success {
    color: var(--success);
}

.result-file-item.file-error {
    color: var(--error);
}

/* ── 弹窗 ───────────────────────────────────────────────── */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal-overlay.active {
    display: flex;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal {
    background: var(--bg-card);
    border-radius: 14px;
    width: 100%;
    max-width: 380px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15), 0 4px 20px rgba(0, 0, 0, 0.08);
    animation: modalSlideUp 0.25s ease;
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.1rem 1.25rem 0;
}

.modal-header h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--ink);
}

.modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    transition: all var(--transition);
}

.modal-close:hover {
    background: var(--bg-hover);
    color: var(--ink);
}

.modal-body {
    padding: 1rem 1.25rem;
}

.modal-desc {
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 1rem;
}

.modal-captcha-row {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-bottom: 0.75rem;
}

.modal-captcha-img {
    height: 46px;
    flex: 1;
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--border);
    cursor: pointer;
    object-fit: contain;
    background: var(--bg);
    transition: opacity var(--transition);
}

.modal-captcha-img:hover {
    opacity: 0.85;
}

.modal-captcha-input {
    width: 100%;
    padding: 0.7rem 0.9rem;
    font-size: 1.1rem;
    font-family: var(--font);
    color: var(--ink);
    background: var(--bg);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    outline: none;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    text-align: center;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.modal-captcha-input::placeholder {
    letter-spacing: normal;
    text-transform: none;
    font-size: 0.85rem;
    color: #b5b0a8;
}

.modal-captcha-input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(196, 168, 130, 0.15);
}

.modal-error {
    font-size: 0.8rem;
    color: var(--error);
    min-height: 1.2rem;
    margin-top: 0.4rem;
}

.modal-footer {
    display: flex;
    gap: 10px;
    padding: 0 1.25rem 1.25rem;
}

.modal-footer .btn {
    flex: 1;
    padding: 0.65rem 1rem;
}

/* ── 页脚 ───────────────────────────────────────────────── */
.footer {
    margin-top: 2rem;
    text-align: center;
    font-size: 0.78rem;
    color: #b5b0a8;
}

/* ── 响应式 ─────────────────────────────────────────────── */
@media (max-width: 560px) {
    body {
        padding: 1rem 0.75rem;
    }

    .header {
        margin-bottom: 1rem;
    }

    .header-icon {
        width: 40px;
        height: 40px;
        border-radius: 10px;
        margin-bottom: 0.5rem;
    }

    .header-icon svg {
        width: 22px;
        height: 22px;
    }

    .header h1 {
        font-size: 1.2rem;
    }

    .subtitle {
        font-size: 0.8rem;
    }

    .form {
        padding: 1.25rem;
    }

    .dropzone {
        padding: 1.5rem 1rem;
    }

    .btn-icon {
        width: 38px;
        height: 38px;
    }

    .form-actions {
        flex-direction: column;
    }
}

/* ── 工具类 ─────────────────────────────────────────────── */
.hidden {
    display: none !important;
}

.shake {
    animation: shake 0.4s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-6px); }
    40%, 80% { transform: translateX(6px); }
}