@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

.warranty-container {
    --primary-color: #4f46e5;
    --primary-light: #6366f1;
    --primary-dark: #3730a3;
    --secondary-color: #64748b;
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --text-color: #1e293b;
    --text-light: #64748b;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --border-color: #e2e8f0;
    --shadow-light: rgba(15, 23, 42, 0.08);
    --shadow-medium: rgba(15, 23, 42, 0.12);
    --font-family: 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    font-family: var(--font-family);
    background-color: #f1f5f9;
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
}

.warranty-container .container {
    width: 100%;
    max-width: 900px;
    margin: 20px;
    background-color: var(--surface-color);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    overflow: hidden;
}

.warranty-container .main-content { padding: 48px; }

/* Header and Logo */
.warranty-container .header-section {
    background-color: var(--surface-color);
    padding: 24px 48px;
    border-bottom: 1px solid var(--border-color);
}

.warranty-container .logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.warranty-container .logo { height: 6em; width: auto; fill: var(--primary-color); flex-shrink: 0; }
.warranty-container .logo-text { color: var(--primary-color); font-weight: 700; font-size: 2.25em; margin: 0; line-height: 1.2; }

/* Navigation Tabs */
.warranty-container .nav-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.warranty-container .nav-tab {
    flex: 1;
    max-width: 200px;
    padding: 16px 24px;
    cursor: pointer;
    border: 1px solid rgba(148, 163, 184, 0.2);
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    font-size: 1em;
    font-weight: 600;
    color: #64748b;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
}

.warranty-container .nav-tab:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(79, 70, 229, 0.12);
    border-color: rgba(79, 70, 229, 0.3);
    color: var(--primary-color);
}

.warranty-container .nav-tab.active {
    background: linear-gradient(135deg, #4f46e5 0%, #6366f1 50%, #8b5cf6 100%);
    color: white;
    border-color: #4338ca;
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.3);
    transform: translateY(-2px);
}

.warranty-container .tab-content { display: none; animation: fadeIn 0.5s ease-in-out; }
.warranty-container .tab-content.active { display: block; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Forms */
.warranty-container form {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 768px) {
    .warranty-container form { grid-template-columns: 1fr 1fr; }
    .warranty-container .full-width { grid-column: 1 / -1; }
}

.warranty-container .form-group { display: flex; flex-direction: column; }

.warranty-container label {
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-color);
    font-size: 0.95em;
}

.warranty-container input[type="text"],
.warranty-container input[type="email"],
.warranty-container input[type="tel"],
.warranty-container input[type="date"],
.warranty-container select,
.warranty-container textarea {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    box-sizing: border-box;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 1em;
    font-family: var(--font-family);
    background-color: #fafbfc;
}

.warranty-container input:focus,
.warranty-container select:focus,
.warranty-container textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
    background-color: white;
    transform: translateY(-1px);
}

.warranty-container input[readonly] {
    background-color: #f1f5f9;
    color: var(--text-light);
    cursor: not-allowed;
}

/* Date input fix for mobile */
.warranty-container input[type="date"] {
    min-height: 52px;
    -webkit-appearance: none;
    appearance: none;
}

.warranty-container button[type="submit"] {
    background-color: var(--primary-color);
    color: white;
    padding: 18px 32px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-size: 1.125em;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    grid-column: 1 / -1;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.2);
    text-align: center;
}

.warranty-container button[type="submit"]:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(79, 70, 229, 0.3);
    background-color: var(--primary-dark);
}

.warranty-container button[type="submit"]:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ========================================
   Photo Upload Component
   ======================================== */

.warranty-container .photo-upload-section {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 8px;
}

.warranty-container .photo-upload-card {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
    transition: all 0.3s ease;
    background-color: #fafbfc;
    position: relative;
    cursor: pointer;
}

.warranty-container .photo-upload-card:hover {
    border-color: var(--primary-light);
    background-color: rgba(79, 70, 229, 0.03);
}

.warranty-container .photo-upload-card.has-photo {
    border-style: solid;
    border-color: var(--success-color);
    background-color: rgba(16, 185, 129, 0.03);
}

.warranty-container .photo-upload-card.processing {
    border-color: var(--warning-color);
    background-color: rgba(245, 158, 11, 0.03);
}

.warranty-container .photo-upload-card.error {
    border-color: var(--error-color);
    background-color: rgba(239, 68, 68, 0.03);
}

.warranty-container .upload-icon {
    font-size: 2.5em;
    margin-bottom: 8px;
    display: block;
}

.warranty-container .upload-icon-svg {
    width: 48px;
    height: 48px;
    margin: 0 auto 8px;
    display: block;
    color: var(--text-light);
    transition: color 0.3s ease;
}

.warranty-container .photo-upload-card:hover .upload-icon-svg {
    color: var(--primary-color);
}

.warranty-container .photo-upload-card.has-photo .upload-icon-svg {
    color: var(--success-color);
}

.warranty-container .photo-upload-card.processing .upload-icon-svg {
    color: var(--warning-color);
}

.warranty-container .photo-upload-card.error .upload-icon-svg {
    color: var(--error-color);
}

.warranty-container .upload-label {
    font-weight: 600;
    font-size: 1em;
    color: var(--text-color);
    margin-bottom: 4px;
}

.warranty-container .upload-hint {
    font-size: 0.85em;
    color: var(--text-light);
}

.warranty-container .upload-status {
    font-size: 0.85em;
    margin-top: 8px;
    font-weight: 500;
}

.warranty-container .upload-status.success { color: var(--success-color); }
.warranty-container .upload-status.processing { color: var(--warning-color); }
.warranty-container .upload-status.error { color: var(--error-color); }

.warranty-container .photo-preview {
    width: 100%;
    max-height: 150px;
    object-fit: contain;
    border-radius: 8px;
    margin-top: 12px;
}

.warranty-container .photo-upload-card input[type="file"] {
    display: none;
}

/* ========================================
   Invoice Toggle (有/無發票)
   ======================================== */

.warranty-container .invoice-toggle {
    grid-column: 1 / -1;
    display: flex;
    gap: 12px;
    margin-bottom: 8px;
}

.warranty-container .invoice-toggle-btn {
    flex: 1;
    padding: 14px 20px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    background: white;
    cursor: pointer;
    font-size: 0.95em;
    font-weight: 600;
    color: var(--text-light);
    transition: all 0.3s ease;
    text-align: center;
}

.warranty-container .invoice-toggle-btn:hover {
    border-color: var(--primary-light);
    color: var(--primary-color);
}

.warranty-container .invoice-toggle-btn.active {
    border-color: var(--primary-color);
    background-color: rgba(79, 70, 229, 0.05);
    color: var(--primary-color);
}

.warranty-container .invoice-section { grid-column: 1 / -1; }
.warranty-container .no-invoice-section { grid-column: 1 / -1; }

.warranty-container .no-invoice-notice {
    background: linear-gradient(135deg, #fefce8 0%, #fef9c3 100%);
    border: none;
    border-radius: 12px;
    padding: 16px 20px 16px 52px;
    font-size: 0.9em;
    color: #713f12;
    line-height: 1.6;
    position: relative;
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.12);
}

.warranty-container .no-invoice-notice::before {
    content: "\26A0";
    position: absolute;
    left: 16px;
    top: 14px;
    font-size: 1.4em;
    line-height: 1;
}

/* ========================================
   Query Result Actions
   ======================================== */

.warranty-container .result-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.warranty-container .result-actions button {
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.9em;
    cursor: pointer;
    transition: all 0.3s ease;
}

.warranty-container .btn-repair {
    background-color: var(--primary-color);
    color: white;
}

.warranty-container .btn-upload-invoice {
    background-color: var(--warning-color);
    color: white;
}

/* ========================================
   Modal
   ======================================== */

.warranty-container .modal-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.warranty-container .modal-overlay.visible { opacity: 1; visibility: visible; }

.warranty-container .modal-content {
    background: var(--surface-color);
    padding: 32px;
    border-radius: 20px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    overflow-y: auto;
    transform: translateY(-50px) scale(0.95);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.warranty-container .modal-overlay.visible .modal-content {
    transform: translateY(0) scale(1);
}

.warranty-container .modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 16px;
    margin-bottom: 24px;
}

.warranty-container .modal-title { font-size: 1.5em; font-weight: 700; color: var(--text-color); }

.warranty-container .modal-close {
    background: transparent;
    border: none;
    font-size: 2em;
    cursor: pointer;
    color: var(--text-light);
    padding: 4px;
    border-radius: 8px;
    transition: all 0.2s ease;
    grid-column: auto;
    box-shadow: none;
}

.warranty-container .modal-close:hover {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
    transform: none;
}

.warranty-container .modal-body {
    white-space: pre-wrap;
    word-wrap: break-word;
    font-size: 0.95em;
    line-height: 1.8;
    color: var(--text-color);
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    padding: 24px;
    border-radius: 12px;
    border: none;
}

/* Spinner */
.warranty-container .spinner {
    position: fixed;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    border: 4px solid rgba(79, 70, 229, 0.1);
    width: 40px; height: 40px;
    border-radius: 50%;
    border-left-color: var(--primary-color);
    animation: spin 1s ease infinite;
    z-index: 1001;
}

@keyframes spin {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.warranty-container .hidden { display: none; }

/* Info sections */
.warranty-container .info-section {
    background-color: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 32px;
}

.warranty-container .info-section h3 {
    color: var(--primary-color);
    font-size: 1.5em;
    font-weight: 700;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 8px;
}

.warranty-container .info-section h4 {
    color: var(--text-color);
    font-size: 1.25em;
    font-weight: 600;
    margin: 20px 0 12px 0;
}

.warranty-container .info-section ul { margin: 16px 0; padding-left: 20px; list-style-type: disc; }
.warranty-container .info-section li { margin-bottom: 8px; line-height: 1.6; color: var(--text-color); }
.warranty-container .info-section p { margin: 16px 0; line-height: 1.6; color: var(--text-color); background: none; padding: 0; border: none; }
.warranty-container .info-section strong { color: var(--primary-color); font-weight: 600; }

.warranty-container .tab-content p {
    color: var(--text-light);
    font-size: 1.05em;
    margin-bottom: 24px;
    padding: 16px;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: 12px;
    border: none;
}

/* Responsive */
@media (max-width: 768px) {
    .warranty-container {
        padding: 0;
        background-color: var(--surface-color);
        min-height: 100vh;
        align-items: stretch;
    }

    .warranty-container .container {
        margin: 0;
        border-radius: 0;
        box-shadow: none;
        max-width: 100%;
    }

    .warranty-container .main-content { padding: 16px; }

    .warranty-container .header-section { padding: 12px 16px; }
    .warranty-container .logo-container { gap: 10px; }
    .warranty-container .logo { height: 3.5em; }
    .warranty-container .logo-text { font-size: 1.35em; }

    .warranty-container .nav-tabs {
        padding: 8px;
        gap: 4px;
    }
    .warranty-container .nav-tab {
        padding: 10px 6px;
        font-size: 0.85em;
        border-radius: 8px;
        max-width: none;
    }

    .warranty-container .info-section {
        padding: 14px;
        margin-bottom: 16px;
    }
    .warranty-container .info-section h3 { font-size: 1.2em; margin-bottom: 12px; }
    .warranty-container .info-section h4 { font-size: 1.05em; margin: 12px 0 8px 0; }
    .warranty-container .info-section ul { padding-left: 16px; margin: 8px 0; }
    .warranty-container .info-section li { font-size: 0.9em; margin-bottom: 4px; }

    .warranty-container form { gap: 14px; }

    .warranty-container label { font-size: 0.9em; margin-bottom: 6px; }

    .warranty-container input[type="text"],
    .warranty-container input[type="email"],
    .warranty-container input[type="tel"],
    .warranty-container input[type="date"],
    .warranty-container select,
    .warranty-container textarea {
        padding: 12px 14px;
        font-size: 16px; /* Prevents iOS auto-zoom on focus */
        border-radius: 10px;
    }

    /* No-invoice notice mobile */
    .warranty-container .no-invoice-notice {
        padding: 12px 14px 12px 44px;
        font-size: 0.85em;
    }
    .warranty-container .no-invoice-notice::before {
        left: 12px;
        top: 10px;
        font-size: 1.2em;
    }

    .warranty-container button[type="submit"] {
        padding: 14px 20px;
        font-size: 1em;
        border-radius: 10px;
    }

    .warranty-container .photo-upload-section { grid-template-columns: 1fr; gap: 12px; }

    .warranty-container .photo-upload-card {
        padding: 16px;
        border-radius: 10px;
    }

    .warranty-container .upload-icon-svg { width: 36px; height: 36px; }
    .warranty-container .upload-label { font-size: 0.95em; }
    .warranty-container .upload-hint { font-size: 0.8em; }

    .warranty-container .photo-preview { max-height: 120px; }

    .warranty-container .invoice-toggle { gap: 8px; }
    .warranty-container .invoice-toggle-btn {
        padding: 10px 12px;
        font-size: 0.85em;
        border-radius: 10px;
    }

    .warranty-container .no-invoice-notice { padding: 12px 14px; font-size: 0.85em; }

    .warranty-container .modal-content {
        width: 95%;
        padding: 20px;
        border-radius: 14px;
        max-height: 85vh;
    }
    .warranty-container .modal-title { font-size: 1.2em; }
    .warranty-container .modal-body { padding: 14px; font-size: 0.9em; }

    .warranty-container .result-actions { flex-direction: column; }
    .warranty-container .result-actions button { width: 100%; padding: 14px; }
}

/* Extra small screens (iPhone SE etc.) */
@media (max-width: 375px) {
    .warranty-container .logo { height: 2.8em; }
    .warranty-container .logo-text { font-size: 1.15em; }
    .warranty-container .nav-tab { padding: 8px 4px; font-size: 0.8em; }
    .warranty-container .main-content { padding: 12px; }
}

/* ========================================
   Embed Mode (?embed=1)
   移除外框、背景、陰影，讓 iframe 無縫融入
   ======================================== */

html.embed-mode,
body.embed-mode {
    margin: 0;
    padding: 0;
    background: transparent;
    overflow: hidden !important;  /* 禁止 iframe 內部捲軸 */
    height: auto !important;
    min-height: 0 !important;
}

body.embed-mode .warranty-container {
    background: transparent;
    padding: 0;
    min-height: 0 !important;  /* 防止 100vh 迴圈 */
    height: auto !important;
    align-items: stretch;
}

body.embed-mode .warranty-container .container {
    margin: 0;
    border-radius: 0;
    box-shadow: none;
    max-width: 100%;
    min-height: 0 !important;
}

/* header-section 在嵌入模式下保留顯示 */

body.embed-mode .warranty-container .modal-overlay {
    position: fixed;
}