/**
 * Components Styles - 元件樣式
 * 包含按鈕、表單、卡片、頁籤、彈窗、Toast 等可重用元件
 */

/* ==================== Tabs ==================== */
.tabs {
    display: flex;
    background: #f8fafc;
    border-bottom: 2px solid var(--border);
}

.tab-btn {
    padding: 16px 32px;
    border: none;
    background: transparent;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    color: var(--primary);
    background: rgba(26, 82, 118, 0.05);
}

.tab-btn.active {
    color: var(--primary);
    background: var(--bg-card);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary);
    border-radius: 2px 2px 0 0;
}

.tab-content {
    display: none;
    padding: 28px;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

/* ==================== Form Elements ==================== */
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px 32px;
}

.form-grid.three-cols {
    grid-template-columns: repeat(3, 1fr);
}

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

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.form-group label .required {
    color: var(--danger);
    font-weight: 600;
}

.input-wrapper {
    display: flex;
    gap: 8px;
    align-items: center;
}

input[type="text"],
input[type="number"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--border);
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--text-primary);
    background: #fafbfc;
    transition: all 0.2s ease;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-light);
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(41, 128, 185, 0.1);
}

input:read-only {
    background: #f0f3f5;
    color: var(--text-secondary);
    cursor: default;
}

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

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235d6d7e' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

/* ==================== Buttons ==================== */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(26, 82, 118, 0.3);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(26, 82, 118, 0.4);
}

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

.btn-secondary:hover {
    background: rgba(26, 82, 118, 0.05);
}

.btn-cancel {
    background: #f0f3f5;
    color: var(--text-secondary);
}

.btn-cancel:hover {
    background: #e5e9ec;
}

.btn svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.btn-lookup {
    padding: 10px 16px;
    border: 1.5px solid var(--border);
    border-radius: 6px;
    background: #f8fafc;
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

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

.btn-icon {
    width: 38px;
    height: 38px;
    border: 1.5px solid var(--border);
    border-radius: 6px;
    background: #f8fafc;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

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

.btn-icon svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.nav-buttons {
    display: flex;
    gap: 8px;
}

.nav-btn {
    width: 36px;
    height: 36px;
    border: 1.5px solid var(--border);
    border-radius: 6px;
    background: white;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.nav-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.nav-btn svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

/* ==================== AI Button ==================== */
.ai-generate-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #9b59b6 0%, #8e44ad 100%);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(155, 89, 182, 0.3);
    transition: all 0.3s ease;
}

.ai-generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(155, 89, 182, 0.4);
}

.ai-generate-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.ai-generate-btn svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.ai-generate-btn .spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ==================== Form Actions ==================== */
.form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 28px;
    background: #f8fafc;
    border-top: 1px solid var(--border);
}

.action-buttons {
    display: flex;
    gap: 12px;
}

/* ==================== Toggle Switch ==================== */
.toggle-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.toggle-switch {
    position: relative;
    width: 52px;
    height: 28px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: 0.3s;
    border-radius: 28px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-switch input:checked + .toggle-slider {
    background-color: var(--success);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(24px);
}

.toggle-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ==================== Toast Notification ==================== */
.toast {
    position: fixed;
    top: 24px;
    right: 24px;
    padding: 16px 24px;
    background: var(--success);
    color: white;
    border-radius: var(--radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    gap: 12px;
    transform: translateX(120%);
    transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 1000;
}

.toast.show {
    transform: translateX(0);
}

.toast svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

/* ==================== Modal ==================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 100;
    backdrop-filter: blur(4px);
}

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

.modal {
    background: white;
    border-radius: var(--radius);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 90%;
    max-width: 500px;
    animation: modalIn 0.3s ease;
}

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

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: #f0f3f5;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: var(--danger);
    color: white;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* ==================== Checkbox Group ==================== */
.checkbox-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border: 1.5px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.checkbox-item:hover {
    border-color: var(--primary-light);
    background: rgba(41, 128, 185, 0.05);
}

.checkbox-item input {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
}

.checkbox-item label {
    cursor: pointer;
    font-size: 0.9rem;
}

/* ==================== Special Fields ==================== */
.confidential-field {
    position: relative;
}

.confidential-field input {
    padding-left: 32px;
}

.confidential-field::before {
    content: '🔒';
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 14px;
}

.numbered-textarea {
    font-family: inherit;
    line-height: 1.8;
}

/* ==================== Data Preview ==================== */
.data-preview {
    margin-top: 24px;
    padding: 20px;
    background: #f8fafc;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.data-preview h4 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.data-preview pre {
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.8rem;
    background: #2c3e50;
    color: #ecf0f1;
    padding: 16px;
    border-radius: 6px;
    overflow-x: auto;
    max-height: 300px;
}