/* 申請書索取頁面專屬樣式 */

:root {
    --primary: #0066cc;
    --primary-dark: #0052a3;
    --success: #28a745;
    --danger: #dc3545;
    --warning: #ffc107;
    --warning-bg: #fff3cd;
    --warning-border: #ffecb5;
    --light-bg: #f8f9fa;
    --border-color: #e0e0e0;
    --disabled-bg: #e9ecef;
    --disabled-text: #6c757d;
    --placeholder-color: #c0c0c0;
}

/* ============================================
   背景樣式
   ============================================ */

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.min-vh-100 {
    min-height: 100vh !important;
}

/* ============================================
   卡片設計
   ============================================ */

.form-container {
    animation: slideIn 0.5s ease-out;
    border: none;
    border-radius: 12px;
    overflow: hidden;
}

.card-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 30px;
    border: none;
    position: relative;
}

.card-header::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)" /></svg>');
    pointer-events: none;
}

.card-header h3 {
    position: relative;
    z-index: 1;
    margin: 0;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.card-body {
    background: white;
    padding-top: 1.5rem !important; /* 減少上方間距 (原本是 3rem) */
}

/* ============================================
   漸層卡片標題
   ============================================ */

.bg-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

/* ============================================
   表單樣式
   ============================================ */

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    font-weight: 600;
    color: #333;
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: block;
}

.form-control,
.form-control-lg {
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: inherit;
}

.form-control-lg {
    padding: 0.875rem 1rem;
    font-size: 1.0625rem;
}

/* Placeholder 樣式 - 更小、更淡 */
.form-control::placeholder,
.form-control-lg::placeholder {
    color: var(--placeholder-color);
    font-size: 0.875rem;
    opacity: 1;
}

.form-control::-webkit-input-placeholder {
    color: var(--placeholder-color);
    font-size: 0.875rem;
    opacity: 1;
}

.form-control::-moz-placeholder {
    color: var(--placeholder-color);
    font-size: 0.875rem;
    opacity: 1;
}

.form-control:-ms-input-placeholder {
    color: var(--placeholder-color);
    font-size: 0.875rem;
    opacity: 1;
}

.form-control-lg::placeholder {
    font-size: 0.9rem;
}

.form-control-lg::-webkit-input-placeholder {
    font-size: 0.9rem;
}

.form-control-lg::-moz-placeholder {
    font-size: 0.9rem;
}

.form-control-lg:-ms-input-placeholder {
    font-size: 0.9rem;
}

.form-control:focus,
.form-control-lg:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
    outline: none;
}

.form-control:valid,
.form-control-lg:valid {
    border-color: var(--success);
}

.form-control.is-invalid,
.form-control-lg.is-invalid {
    border-color: var(--danger);
}

.form-control:disabled,
.form-control-lg:disabled {
    background-color: #f5f5f5;
    cursor: not-allowed;
}

.input-group {
    display: flex;
    gap: 0.5rem;
}

.input-group .form-control,
.input-group .form-control-lg {
    flex: 1;
}

/* 欄位驗證錯誤訊息 */
.invalid-feedback {
    display: none;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--danger);
    font-weight: 500;
}

.is-invalid ~ .invalid-feedback {
    display: block;
}

/* ============================================
   必要項目提示區域
   ============================================ */

#requiredItemsHint {
    animation: slideDown 0.3s ease-out;
    border-left: 4px solid var(--warning);
    background: linear-gradient(135deg, var(--warning-bg) 0%, #fffbf0 100%);
    border-color: var(--warning-border);
}

#requiredItemsHint .alert-heading {
    color: #856404;
    font-size: 0.95rem;
    font-weight: 600;
}

#requiredItemsHint ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

#requiredItemsHint li {
    position: relative;
    padding-left: 1.5rem;
    font-size: 0.9rem;
    line-height: 1.6;
}

#requiredItemsHint li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--warning);
    font-weight: bold;
}

#requiredItemsHint strong {
    color: #856404;
}

#requiredItemsHint .text-muted {
    color: #6c757d !important;
}

#requiredItemsHint .bi-exclamation-triangle-fill {
    color: var(--warning);
}

/* ============================================
   按鈕樣式
   ============================================ */

.btn {
    border-radius: 8px;
    font-weight: 600;
    border: none;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    white-space: nowrap;
    position: relative;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

.btn-outline-secondary {
    border: 2px solid var(--border-color);
    color: var(--primary);
    background: white;
}

.btn-outline-secondary:hover:not(:disabled) {
    background: var(--light-bg);
    border-color: var(--primary);
    color: var(--primary-dark);
}

.btn-outline-secondary:active:not(:disabled) {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 102, 204, 0.3);
}

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

/* 次要按鈕樣式（禁用狀態） */
.btn-secondary {
    background: var(--disabled-bg);
    color: var(--disabled-text);
    cursor: not-allowed;
}

.btn-secondary:hover {
    background: var(--disabled-bg);
    color: var(--disabled-text);
    transform: none;
    box-shadow: none;
}

/* 按鈕禁用狀態 */
.btn:disabled,
.btn.disabled {
    opacity: 0.65;
    cursor: not-allowed;
    pointer-events: none;
    background: var(--disabled-bg);
    color: var(--disabled-text);
}

.btn:disabled:hover,
.btn.disabled:hover {
    transform: none;
    box-shadow: none;
}

/* 提交按鈕特殊樣式 */
#submitBtn {
    position: relative;
    overflow: hidden;
}

#submitBtn:disabled::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        rgba(0, 0, 0, 0.03) 10px,
        rgba(0, 0, 0, 0.03) 20px
    );
    pointer-events: none;
}

.btn:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ============================================
   提示文字
   ============================================ */

.small, .text-muted {
    color: #999;
    font-size: 0.875rem;
}

.d-block {
    display: block;
}

/* ============================================
   驗證訊息
   ============================================ */

#caseValidationMessage {
    min-height: 24px;
    font-size: 0.875rem;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { 
        opacity: 0; 
        transform: translateY(-5px);
    }
    to { 
        opacity: 1; 
        transform: translateY(0);
    }
}

#caseValidationMessage span {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 6px;
    background: rgba(40, 167, 69, 0.1);
    color: var(--success);
    font-weight: 500;
}

#caseValidationMessage span.text-danger {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger);
}

#caseValidationMessage span.text-muted {
    background: rgba(108, 117, 125, 0.1);
    color: var(--disabled-text);
}

#caseValidationMessage i {
    margin-right: 4px;
}

/* ============================================
   警示框
   ============================================ */

.alert {
    border-radius: 12px;
    animation: slideIn 0.3s ease-out;
    border-width: 2px;
}

.alert-success {
    background: linear-gradient(135deg, rgba(40, 167, 69, 0.1) 0%, rgba(40, 167, 69, 0.05) 100%);
    border-color: var(--success);
    color: #155724;
}

.alert-success .alert-heading {
    color: var(--success);
    font-weight: 600;
}

.alert-danger {
    background: linear-gradient(135deg, rgba(220, 53, 69, 0.1) 0%, rgba(220, 53, 69, 0.05) 100%);
    border-color: var(--danger);
    color: #721c24;
}

.alert-danger .alert-heading {
    color: var(--danger);
    font-weight: 600;
}

.alert-warning {
    background: var(--warning-bg);
    border-color: var(--warning-border);
    color: #856404;
}

.alert-warning .alert-heading {
    color: #856404;
    font-weight: 600;
}

.btn-close {
    opacity: 0.7;
}

.btn-close:hover {
    opacity: 1;
}

/* ============================================
   動畫效果
   ============================================ */

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

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        max-height: 500px;
        transform: translateY(0);
    }
}

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

.spinner,
.spinner-border-sm {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.6s linear infinite;
    vertical-align: middle;
}

.spinner-border {
    width: 1rem;
    height: 1rem;
}

.me-2 {
    margin-right: 0.5rem;
}

/* ============================================
   無障礙設計
   ============================================ */

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Tooltip 樣式（用於顯示禁用原因） */
[title]:hover::after {
    content: attr(title);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 8px 12px;
    background: rgba(0, 0, 0, 0.9);
    color: white;
    border-radius: 6px;
    font-size: 0.75rem;
    white-space: nowrap;
    z-index: 1000;
    margin-bottom: 8px;
    pointer-events: none;
}

[title]:hover::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: rgba(0, 0, 0, 0.9);
    margin-bottom: 2px;
    z-index: 1000;
    pointer-events: none;
}

/* ============================================
   輔助工具類
   ============================================ */

.d-none {
    display: none !important;
}

.d-flex {
    display: flex !important;
}

.align-items-start {
    align-items: flex-start !important;
}

.flex-shrink-0 {
    flex-shrink: 0 !important;
}

.flex-grow-1 {
    flex-grow: 1 !important;
}

.text-uppercase {
    text-transform: uppercase;
}

.fw-bold {
    font-weight: 600;
}

.text-white-50 {
    color: rgba(255, 255, 255, 0.5);
}

.text-white {
    color: white;
}

.text-danger {
    color: var(--danger);
}

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

.text-muted {
    color: #999;
}

.mb-0 {
    margin-bottom: 0;
}

.mb-1 {
    margin-bottom: 0.25rem;
}

.mb-2 {
    margin-bottom: 0.5rem;
}

.mt-2 {
    margin-top: 0.5rem;
}

.mt-4 {
    margin-top: 1.5rem;
}

.mt-5 {
    margin-top: 3rem;
}

.mb-4 {
    margin-bottom: 1.5rem;
}

.mb-5 {
    margin-bottom: 3rem;
}

.p-4 {
    padding: 1.5rem;
}

.p-md-5 {
    padding: 1.5rem; /* 修改：減少 padding (原本是 3rem) */
}

.ps-3 {
    padding-left: 1rem;
}

.py-4 {
    padding-top: 1.5rem;
    padding-bottom: 1.5rem;
}

.py-md-0 {
    padding-top: 0;
    padding-bottom: 0;
}

.shadow-lg {
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15) !important;
}

.w-100 {
    width: 100%;
}

/* ============================================
   響應式設計 (Mobile First)
   ============================================ */

/* 超小螢幕 (< 576px) - 預設 */
@media (max-width: 575.98px) {
    .card-header {
        padding: 20px;
    }

    .card-header h3 {
        font-size: 20px;
    }

    .card-body {
        padding: 0.75rem 1rem 1rem 1rem !important; /* 減少上方間距 */
    }

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

    .form-label {
        font-size: 0.75rem;
        margin-bottom: 0.5rem;
    }

    .form-control,
    .form-control-lg {
        padding: 0.6rem 0.8rem;
        font-size: 16px; /* 防止 iOS 自動放大 */
    }

    /* 手機版 placeholder 更小 */
    .form-control::placeholder,
    .form-control-lg::placeholder {
        font-size: 0.8rem;
    }

    .btn-lg {
        padding: 0.6rem 1rem;
        font-size: 0.875rem;
    }

    .small {
        font-size: 0.75rem;
    }

    .py-4 {
        padding-top: 1rem !important;
        padding-bottom: 1rem !important;
    }

    .mt-4 {
        margin-top: 1rem !important;
    }

    .mt-5 {
        margin-top: 1.5rem !important;
    }

    .p-md-5 {
        padding: 0.75rem 1rem 1rem 1rem !important; /* 減少上方間距 */
    }

    #requiredItemsHint {
        font-size: 0.85rem;
    }

    #requiredItemsHint li {
        font-size: 0.8rem;
    }
}

/* 小螢幕 (≥ 576px) */
@media (min-width: 576px) {
    .card-body {
        padding: 1rem 1.5rem 1.5rem 1.5rem; /* 減少上方間距 */
    }

    .form-control,
    .form-control-lg {
        padding: 0.75rem 1rem;
    }

    .py-md-0 {
        padding-top: 0 !important;
        padding-bottom: 0 !important;
    }
}

/* 中等螢幕 (≥ 768px) */
@media (min-width: 768px) {
    .card-body {
        padding: 1.5rem 2rem 2rem 2rem; /* 減少上方間距 */
    }

    .card-header h3 {
        font-size: 24px;
    }

    .p-md-5 {
        padding: 1.5rem 3rem 3rem 3rem !important; /* 減少上方間距 */
    }

    .form-label {
        font-size: 0.875rem;
    }

    .py-md-0 {
        padding-top: 0 !important;
        padding-bottom: 0 !important;
    }

    .mt-md-5 {
        margin-top: 3rem !important;
    }
}

/* 大螢幕 (≥ 992px) */
@media (min-width: 992px) {
    .card-body {
        padding: 1.5rem 2.5rem 2.5rem 2.5rem; /* 減少上方間距 */
    }

    .card-header h3 {
        font-size: 28px;
    }
}

/* 超大螢幕 (≥ 1200px) */
@media (min-width: 1200px) {
    .card-body {
        padding: 1.5rem 3rem 3rem 3rem; /* 減少上方間距 */
    }

    .form-group {
        margin-bottom: 1.5rem;
    }
}

/* ============================================
   列印樣式
   ============================================ */

@media print {
    body {
        background: white;
    }

    .form-container {
        box-shadow: none;
        border: 1px solid #ccc;
    }

    .btn {
        border: 1px solid #999;
    }

    #successMessage,
    #errorMessage,
    #requiredItemsHint {
        display: none !important;
    }
}

/* ============================================
   深色模式支援
   ============================================ */

@media (prefers-color-scheme: dark) {
    .form-label {
        color: #ddd;
    }

    .form-control,
    .form-control-lg {
        background-color: #2b2b2b;
        color: #ddd;
        border-color: #444;
    }

    .form-control:focus,
    .form-control-lg:focus {
        background-color: #2b2b2b;
        color: #ddd;
    }

    .form-control::placeholder,
    .form-control-lg::placeholder {
        color: #888;
    }

    .small, .text-muted {
        color: #aaa;
    }
}

/* ============================================
   觸控設備優化
   ============================================ */

@media (hover: none) and (pointer: coarse) {
    .btn {
        min-height: 44px;
        min-width: 44px;
    }

    .form-control,
    .form-control-lg {
        min-height: 44px;
    }
}