/* ==================== 二维码生成器 ==================== */

/* --- Hero 区域 --- */
.qr-hero {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    padding: calc(var(--navbar-height) + var(--space-lg)) var(--space-sm) var(--space-lg);
    background: var(--bg-dark);
}

.qr-hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.qr-gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
    animation: qrOrbFloat 8s ease-in-out infinite;
}

.qr-gradient-orb.orb-1 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: -100px;
    right: -100px;
    animation-delay: 0s;
}

.qr-gradient-orb.orb-2 {
    width: 300px;
    height: 300px;
    background: var(--secondary);
    bottom: -80px;
    left: -80px;
    animation-delay: -3s;
}

.qr-gradient-orb.orb-3 {
    width: 250px;
    height: 250px;
    background: var(--accent);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -6s;
    opacity: 0.1;
}

@keyframes qrOrbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.qr-hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.qr-hero-title {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.qr-hero-title .title-line {
    color: var(--text-primary);
    opacity: 0.9;
}

.qr-hero-title .title-accent {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.qr-hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}

.qr-hero-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    opacity: 0.8;
    max-width: 500px;
    margin: 0 auto;
    line-height: 1.7;
}

/* --- 主界面 --- */
.qr-main {
    padding: var(--space-lg) 0 var(--space-xl);
    min-height: 60vh;
}

.qr-generator-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: start;
}

.qr-input-section,
.qr-preview-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
}

.qr-input-section .section-title,
.qr-preview-section .section-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border);
}

/* --- 类型选项卡 --- */
.qr-type-tabs {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
    margin-bottom: var(--space-md);
}

.qr-type-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 10px 6px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-dark);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.75rem;
    font-family: inherit;
    text-align: center;
    white-space: nowrap;
}

.qr-type-tab:hover {
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

.qr-type-tab.active {
    border-color: var(--primary);
    background: rgba(79, 142, 247, 0.12);
    color: var(--primary);
}

.type-tab-icon {
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.type-tab-icon svg {
    width: 20px;
    height: 20px;
}

/* --- 类型面板 --- */
.qr-type-panel {
    display: none;
    flex-direction: column;
    gap: var(--space-sm);
}

.qr-type-panel.active {
    display: flex;
}

/* --- 表单 --- */
.qr-form {
    display: flex;
    flex-direction: column;
}

.qr-form .form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.qr-form .form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.qr-form .form-group label .required {
    color: #F85149;
}

.qr-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
}

.form-hint {
    font-size: 0.78rem;
    color: var(--text-secondary);
    opacity: 0.7;
    line-height: 1.4;
}

.qr-form textarea,
.qr-form input[type="text"],
.qr-form input[type="url"],
.qr-form input[type="email"],
.qr-form input[type="tel"] {
    width: 100%;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: 10px 12px;
    font-family: 'Inter', 'Noto Sans SC', sans-serif;
    font-size: 0.95rem;
    transition: border-color var(--transition-fast);
}

.qr-form input[type="text"],
.qr-form input[type="url"],
.qr-form input[type="email"],
.qr-form input[type="tel"] {
    height: 42px;
}

.qr-form textarea {
    resize: vertical;
    min-height: 100px;
}

.qr-form textarea:focus,
.qr-form input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 142, 247, 0.15);
}

.qr-form select {
    width: 100%;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: 10px 12px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: border-color var(--transition-fast);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238B949E' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.qr-form select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 142, 247, 0.15);
}

/* --- 样式选项区块 --- */
.qr-options-section {
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border);
}

.qr-options-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.char-count {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-align: right;
}

/* --- 颜色选择器 --- */
.color-input-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 6px 10px;
    transition: border-color var(--transition-fast);
}

.color-input-wrap:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 142, 247, 0.15);
}

.color-input-wrap input[type="color"] {
    width: 36px;
    height: 36px;
    border: none;
    padding: 0;
    background: none;
    cursor: pointer;
    border-radius: 4px;
}

.color-input-wrap input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-input-wrap input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 4px;
}

.color-value {
    font-size: 0.9rem;
    color: var(--text-primary);
    font-family: 'Inter', monospace;
}

/* --- 样式选择 --- */
.style-options {
    display: flex;
    gap: 8px;
}

.style-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-dark);
    cursor: pointer;
    transition: all var(--transition-fast);
    flex: 1;
    text-align: center;
}

.style-option:hover {
    border-color: var(--text-secondary);
}

.style-option.active {
    border-color: var(--primary);
    background: rgba(79, 142, 247, 0.08);
}

.style-option .style-icon {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
}

.style-option.active .style-icon {
    color: var(--primary);
}

.style-option span:last-child {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.style-option.active span:last-child {
    color: var(--primary);
}

/* --- 生成按钮 --- */
.qr-generate-btn {
    width: 100%;
    justify-content: center;
    gap: 8px;
    padding: 14px 0;
    margin-top: var(--space-xs);
    font-size: 1rem;
}

.qr-generate-btn svg {
    width: 20px;
    height: 20px;
}

/* --- 预览区域 --- */
.qr-preview-card {
    min-height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-preview-empty {
    text-align: center;
    padding: var(--space-lg);
}

.qr-empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-sm);
    color: var(--text-secondary);
    opacity: 0.5;
}

.qr-preview-empty p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.qr-preview-result {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.qr-canvas-wrap {
    background: #ffffff;
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow-md);
    display: inline-block;
    line-height: 0;
}

.qr-canvas-wrap canvas {
    display: block;
    max-width: 100%;
    height: auto;
}

.qr-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.qr-actions .btn {
    gap: 6px;
}

.qr-actions .btn svg {
    width: 16px;
    height: 16px;
}

.qr-info {
    display: flex;
    gap: var(--space-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 8px 16px;
    background: var(--bg-dark);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.qr-info strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* --- Toast --- */
.qr-toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-card);
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    font-size: 0.9rem;
    z-index: 9999;
    opacity: 0;
    transition: all var(--transition-normal);
}

.qr-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.qr-toast.success {
    border-color: #2EA043;
}

.qr-toast.success::before {
    content: '✓ ';
    color: #2EA043;
}

.qr-toast.error {
    border-color: #F85149;
}

.qr-toast.error::before {
    content: '✕ ';
    color: #F85149;
}

/* --- 响应式：平板及以下 --- */
@media (max-width: 768px) {
    .qr-generator-layout {
        grid-template-columns: 1fr;
    }

    .qr-hero {
        min-height: 30vh;
        padding: calc(var(--navbar-height) + var(--space-sm)) var(--space-xs) var(--space-sm);
    }

    .qr-hero-title {
        font-size: clamp(1.4rem, 5vw, 1.8rem);
        margin-bottom: 4px;
    }

    .qr-hero-subtitle {
        font-size: 0.9rem;
        margin-bottom: 2px;
    }

    .qr-hero-desc {
        font-size: 0.8rem;
        max-width: 320px;
        line-height: 1.5;
    }

    .qr-main {
        padding: var(--space-sm) 0 var(--space-md);
    }

    .qr-input-section,
    .qr-preview-section {
        padding: 10px;
        border-radius: var(--radius-sm);
    }

    .qr-input-section .section-title,
    .qr-preview-section .section-title {
        font-size: 1rem;
        margin-bottom: 8px;
        padding-bottom: 6px;
    }

    /* 类型选项卡：紧凑模式 */
    .qr-type-tabs {
        grid-template-columns: repeat(4, 1fr);
        gap: 4px;
        margin-bottom: 10px;
    }

    .qr-type-tab {
        padding: 6px 4px;
        gap: 2px;
        border-width: 1px;
        border-radius: 6px;
    }

    .type-tab-icon {
        width: 18px;
        height: 18px;
    }

    .type-tab-icon svg {
        width: 16px;
        height: 16px;
    }

    .qr-type-tab span:last-child {
        font-size: 0.65rem;
    }

    /* 表单紧凑 */
    .qr-type-panel {
        gap: 6px;
    }

    .qr-form .form-group {
        gap: 4px;
    }

    .qr-form .form-group label {
        font-size: 0.8rem;
    }

    .qr-form .form-row {
        gap: 6px;
    }

    .qr-form textarea,
    .qr-form input[type="text"],
    .qr-form input[type="url"],
    .qr-form input[type="email"],
    .qr-form input[type="tel"] {
        padding: 7px 10px;
        font-size: 0.85rem;
    }

    .qr-form input[type="text"],
    .qr-form input[type="url"],
    .qr-form input[type="email"],
    .qr-form input[type="tel"] {
        height: 36px;
    }

    .qr-form select {
        padding: 7px 10px;
        font-size: 0.85rem;
        background-position: right 8px center;
        padding-right: 30px;
    }

    .qr-form textarea {
        min-height: 70px;
    }

    .form-hint {
        font-size: 0.7rem;
    }

    /* 样式选项 */
    .qr-options-section {
        margin-top: 10px;
        padding-top: 10px;
    }

    .qr-options-title {
        font-size: 0.82rem;
        margin-bottom: 6px;
        font-weight: 500;
    }

    .style-option {
        padding: 8px 10px;
        gap: 4px;
    }

    .style-option .style-icon {
        width: 22px;
        height: 22px;
    }

    .style-option span:last-child {
        font-size: 0.7rem;
    }

    /* 生成按钮 */
    .qr-generate-btn {
        padding: 10px 0;
        font-size: 0.9rem;
        margin-top: 4px;
    }

    .qr-generate-btn svg {
        width: 16px;
        height: 16px;
    }

    /* 预览区 */
    .qr-preview-card {
        min-height: 200px;
    }

    .qr-preview-empty {
        padding: var(--space-sm);
    }

    .qr-empty-icon {
        width: 50px;
        height: 50px;
    }

    .qr-preview-empty p {
        font-size: 0.78rem;
    }

    .qr-preview-result {
        gap: 8px;
    }

    .qr-canvas-wrap {
        padding: 10px;
    }

    .qr-info {
        font-size: 0.75rem;
        padding: 6px 10px;
    }

    /* 颜色选择器 */
    .color-input-wrap {
        padding: 4px 8px;
        gap: 6px;
    }

    .color-input-wrap input[type="color"] {
        width: 30px;
        height: 30px;
    }

    .color-value {
        font-size: 0.8rem;
    }

    /* Toast */
    .qr-toast {
        bottom: 16px;
        padding: 8px 16px;
        font-size: 0.8rem;
    }
}

/* --- 手机端进一步压缩 --- */
@media (max-width: 480px) {
    .qr-hero {
        min-height: 22vh;
        padding: calc(var(--navbar-height) + 10px) 8px 8px;
    }

    .qr-hero-title {
        font-size: 1.3rem;
        gap: 2px;
    }

    .qr-hero-subtitle {
        font-size: 0.8rem;
    }

    .qr-hero-desc {
        display: none;
    }

    .qr-main {
        padding: 6px 0 var(--space-sm);
    }

    .qr-generator-layout {
        gap: 8px;
    }

    .qr-input-section,
    .qr-preview-section {
        padding: 8px;
        border-radius: 8px;
    }

    .qr-input-section .section-title,
    .qr-preview-section .section-title {
        font-size: 0.9rem;
        margin-bottom: 6px;
        padding-bottom: 4px;
    }

    /* 类型选项卡：4列更紧凑 */
    .qr-type-tabs {
        grid-template-columns: repeat(4, 1fr);
        gap: 3px;
        margin-bottom: 6px;
    }

    .qr-type-tab {
        padding: 5px 2px;
        gap: 1px;
    }

    .qr-type-tab span:last-child {
        font-size: 0.6rem;
    }

    .type-tab-icon {
        width: 15px;
        height: 15px;
    }

    .type-tab-icon svg {
        width: 14px;
        height: 14px;
    }

    /* 表单更紧凑 */
    .qr-type-panel {
        gap: 4px;
    }

    .qr-form .form-group {
        gap: 3px;
    }

    .qr-form .form-group label {
        font-size: 0.75rem;
    }

    .qr-form input[type="text"],
    .qr-form input[type="url"],
    .qr-form input[type="email"],
    .qr-form input[type="tel"] {
        height: 32px;
        padding: 5px 8px;
        font-size: 0.8rem;
    }

    .qr-form select {
        padding: 5px 8px;
        font-size: 0.8rem;
        background-position: right 6px center;
        padding-right: 26px;
    }

    .qr-form textarea {
        padding: 6px 8px;
        font-size: 0.8rem;
        min-height: 56px;
    }

    .form-hint {
        font-size: 0.65rem;
    }

    .qr-options-section {
        margin-top: 6px;
        padding-top: 6px;
    }

    .qr-options-title {
        font-size: 0.75rem;
        margin-bottom: 4px;
    }

    .style-option {
        padding: 6px 8px;
        gap: 2px;
    }

    .style-option .style-icon {
        width: 18px;
        height: 18px;
    }

    .style-option span:last-child {
        font-size: 0.65rem;
    }

    .qr-generate-btn {
        padding: 8px 0;
        font-size: 0.82rem;
    }

    .qr-generate-btn svg {
        width: 15px;
        height: 15px;
    }

    /* 预览区 */
    .qr-preview-card {
        min-height: 150px;
    }

    .qr-preview-empty {
        padding: 8px;
    }

    .qr-empty-icon {
        width: 36px;
        height: 36px;
    }

    .qr-preview-empty p {
        font-size: 0.7rem;
    }

    .qr-canvas-wrap {
        padding: 8px;
    }

    .qr-canvas-wrap canvas {
        max-width: 200px;
    }

    .qr-actions {
        flex-direction: column;
        width: 100%;
    }

    .qr-actions .btn {
        width: 100%;
        justify-content: center;
        padding: 7px 0;
        font-size: 0.8rem;
    }

    .qr-info {
        flex-direction: column;
        gap: 3px;
        text-align: center;
        font-size: 0.7rem;
        padding: 5px 8px;
    }

    .color-input-wrap {
        padding: 3px 6px;
        gap: 4px;
    }

    .color-input-wrap input[type="color"] {
        width: 26px;
        height: 26px;
    }

    .color-value {
        font-size: 0.72rem;
    }
}