/* =========================================
   detect.css — 四頁掃描流程
   手機優先 · max-width 480px
   ========================================= */


/* ─── 頁面系統 ─── */

.page {
    display: flex;
    flex-direction: column;
    animation: fadeIn 300ms ease both;
}

#page-scanning {
    min-height: 100dvh;
}

.page-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    text-align: center;
    padding: var(--space-xl) var(--space-md) var(--space-2);
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    gap: var(--space-md);
}


/* ─── 頁 1：首頁（工具入口） ─── */

#page-home .page-content {
    justify-content: flex-start;
    padding-top: var(--space-6);
    gap: var(--space-2);
}

.aio-answer {
    font-size: 0.82rem;
    color: var(--muted);
    max-width: 360px;
    line-height: 1.6;
}

.hero-sub {
    color: var(--dim);
    font-size: 1.05rem;
    font-weight: 500;
}

.permission-box {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--card-shadow);
    padding: var(--space-4) var(--space-5);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    width: 100%;
    max-width: 400px;
}

.permission-box p {
    font-size: 0.9rem;
    line-height: 1.7;
}

.permission-hint {
    font-size: 0.82rem !important;
    color: var(--muted) !important;
    line-height: 1.8;
}

.privacy-note {
    font-size: 0.82rem;
    color: var(--muted);
    margin-top: var(--space-1);
    margin-bottom: 0;
}

/* 兩欄格子，第三張置中 */
.scene-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    width: 100%;
    max-width: 400px;
}

/* 四個卡片 2x2，圓角只在四角 */
.modal-content .scene-card:nth-child(1) { border-radius: var(--radius-lg) 0 0 0; }
.modal-content .scene-card:nth-child(2) { border-radius: 0 var(--radius-lg) 0 0; }
.modal-content .scene-card:nth-child(3) { border-radius: 0 0 0 var(--radius-lg); }
.modal-content .scene-card:nth-child(4) { border-radius: 0 0 var(--radius-lg) 0; }

.scene-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: var(--space-lg) var(--space-md);
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: background var(--transition-base),
                border-color var(--transition-base),
                box-shadow var(--transition-base),
                transform var(--transition-base);
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    text-align: center;
    width: 100%;
}

.scene-card:hover,
.scene-card:focus-visible {
    background: var(--bg-surface);
    border-color: rgba(107, 154, 143, 0.35);
    box-shadow: var(--shadow-warm);
    transform: translateY(-2px);
}

.scene-card:active {
    transform: translateY(0);
    background: var(--bg-surface);
    border-color: var(--accent-warm);
    box-shadow: none;
}

.scene-icon {
    font-size: 2.2rem;
    line-height: 1;
}

.scene-name {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-primary);
    letter-spacing: 0.03em;
}

.scene-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.5;
}


/* ─── 頁 2：授權提示 ─── */

#page-permission .page-content {
    gap: var(--space-lg);
}

#page-permission h2 {
    margin-bottom: 0;
}

#page-permission p {
    color: var(--text-secondary);
    font-size: 0.92rem;
}

.permission-hint {
    background: var(--bg-surface);
    border: 1px solid rgba(107, 154, 143, 0.15);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    color: var(--text-primary) !important;
    font-size: 0.88rem !important;
    line-height: 1.85;
}

.privacy-note {
    font-size: 0.78rem !important;
    color: var(--text-secondary) !important;
    opacity: 0.6;
    margin-top: calc(var(--space-sm) * -1);
}

#btn-start-scan {
    width: 100%;
    max-width: 280px;
}


/* ─── 頁 3：掃描中（全屏佈局） ─── */

#page-scanning {
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    background: #000;
    overflow: hidden;
    animation: fadeIn 300ms ease both;
}

/* 引導區：固定在頂部 */
.scan-guide {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-md) 10px;
    background: rgba(26, 30, 28, 0.92);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(107, 154, 143, 0.1);
    z-index: 10;
}

.guide-location {
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--accent-warm);
    letter-spacing: 0.06em;
}

.guide-image-wrap {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-surface);
    flex-shrink: 0;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.guide-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.guide-hint {
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.65;
    max-width: 260px;
}

/* 相機區：撐滿剩餘高度，是重頭戲 */
.camera-container {
    flex: 1;
    position: relative;
    overflow: hidden;
    background: #000;
    min-height: 0;
}

#scan-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.overlay-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
}

/* 磁場指示器：疊在相機底部 */
.mag-indicator {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 8px var(--space-md);
    background: rgba(26, 30, 28, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 10;
}

.mag-label {
    font-size: 0.68rem;
    color: var(--text-secondary);
    letter-spacing: 0.08em;
    white-space: nowrap;
    min-width: 24px;
    opacity: 0.7;
}

.mag-mini-bar {
    flex: 1;
    max-width: 140px;
    height: 3px;
    background: rgba(255, 255, 255, 0.07);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.mag-mini-fill {
    height: 100%;
    width: 0%;
    background: var(--accent-warm);
    border-radius: var(--radius-full);
    transition: width 200ms ease, background 300ms ease;
}

.mag-mini-fill.caution {
    background: var(--accent-caution);
}

.mag-mini-fill.danger {
    background: var(--accent-danger);
}

.mag-value-mini {
    font-size: 0.68rem;
    color: var(--text-secondary);
    white-space: nowrap;
    min-width: 48px;
    text-align: right;
    opacity: 0.7;
    font-variant-numeric: tabular-nums;
}

/* 操作按鈕：在引導區裡面 */
.scan-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding-top: var(--space-xs);
}

#btn-spot-done {
    width: 100%;
    max-width: 320px;
}

.scan-progress-text {
    font-size: 0.74rem;
    color: var(--text-secondary);
    letter-spacing: 0.08em;
    opacity: 0.55;
    font-variant-numeric: tabular-nums;
}


/* ─── 頁 4：結果 ─── */

#page-result {
    background: var(--bg-primary);
}

#page-result .page-content {
    justify-content: flex-start;
    padding-top: max(40px, 6dvh);
    gap: var(--space-3);
}

.result-icon {
    font-size: 3.2rem;
    line-height: 1;
    animation: checkPop 500ms cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

#result-summary {
    color: var(--text-secondary);
    font-size: 0.92rem;
    max-width: 280px;
}

.result-warm {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.85;
    opacity: 0.75;
    max-width: 280px;
}

.result-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    width: 100%;
    max-width: 260px;
}

.result-actions .btn-share,
.result-actions .btn-secondary {
    width: 100%;
}

.result-disclaimer {
    width: 100%;
    max-width: 320px;
    text-align: center;
    padding: var(--space-lg) var(--space-sm) var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: var(--space-sm);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.result-disclaimer p {
    font-size: 0.75rem;
    color: var(--text-secondary);
    opacity: 0.5;
    line-height: 1.85;
}


/* ─── 動畫（覆寫 base.css 同名） ─── */

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes checkPop {
    0%   { transform: scale(0); opacity: 0; }
    60%  { transform: scale(1.25); opacity: 1; }
    100% { transform: scale(1); }
}


/* ─── 首頁 ─── */

#page-home .page-content {
    gap: var(--space-lg);
}

#page-home h1 {
    font-size: 1.5rem;
    line-height: 1.6;
}

.btn-lg {
    padding: 16px 48px;
    font-size: 1.05rem;
}


/* ─── Modal 彈窗 ─── */

.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
    animation: fadeIn 200ms ease both;
}

.modal-overlay[hidden] {
    display: none !important;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    padding: var(--space-xl) var(--space-lg);
    width: 100%;
    max-width: 360px;
    text-align: center;
    animation: fadeInScale 300ms cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.modal-content h2 {
    margin-bottom: var(--space-lg);
    font-size: 1.1rem;
}

.modal-content .scene-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    max-width: none;
}

.modal-content .scene-card {
    padding: var(--space-md);
    border: 1px solid var(--card-border);
    border-radius: 0;
}

.modal-content .scene-icon {
    font-size: 1.8rem;
}

.modal-content .scene-name {
    font-size: 0.88rem;
}


/* ─── 桌面版 Modal：請用手機 ─── */

.modal-desktop {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.modal-phone-icon {
    font-size: 3.5rem;
    line-height: 1;
}

.modal-qr {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}

.modal-qr canvas,
.modal-qr img {
    width: 160px;
    height: 160px;
    display: block;
}

.modal-url {
    font-size: 0.82rem;
    color: var(--accent-warm);
    word-break: break-all;
    padding: 8px 20px;
    background: var(--bg-surface);
    border-radius: var(--radius-full);
    border: 1px solid rgba(107, 154, 143, 0.2);
    letter-spacing: 0.02em;
}


/* ─── 知識區 ─── */

.section-knowledge,
.section-faq,
.section-cta {
    padding: var(--space-4) var(--space-md);
}

.section-knowledge {
    border-top: 1px solid rgba(255,255,255,0.04);
}

.section-inner {
    max-width: 720px;
    margin: 0 auto;
}

.section-inner > h2 {
    text-align: center;
    margin-bottom: var(--space-xl);
    color: var(--text-primary);
}

.section-inner > p {
    text-align: center;
}

.knowledge-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

@media (min-width: 600px) {
    .knowledge-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.knowledge-card {
    display: block;
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    text-decoration: none;
    transition: background var(--transition-base),
                border-color var(--transition-base),
                transform var(--transition-base),
                box-shadow var(--transition-base);
    cursor: pointer;
}

.knowledge-card:hover {
    background: var(--bg-surface);
    border-color: rgba(107, 154, 143, 0.3);
    transform: translateY(-3px);
    box-shadow: var(--shadow-warm);
}

.knowledge-card h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    text-align: center;
}

.knowledge-card p {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.65;
    text-align: center;
}


/* ─── FAQ ─── */

.section-faq {
    background: var(--bg-card);
    border-top: 1px solid rgba(255,255,255,0.04);
    border-bottom: 1px solid rgba(255,255,255,0.04);
}

.section-faq details {
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.section-faq details:first-of-type {
    border-top: 1px solid rgba(255,255,255,0.06);
}

.section-faq summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) 0;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
    line-height: 1.5;
    gap: var(--space-md);
}

.section-faq summary::after {
    content: '+';
    color: var(--accent-warm);
    font-size: 1.2rem;
    font-weight: 300;
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.section-faq details[open] summary::after {
    transform: rotate(45deg);
}

.section-faq details[open] summary {
    color: var(--accent-warm);
}

.section-faq details p {
    padding: 0 0 var(--space-lg);
    font-size: 0.88rem;
    line-height: 1.85;
    color: var(--text-secondary);
    max-width: none;
    text-align: left;
    animation: slideDown 200ms ease both;
}


/* ─── CTA ─── */

.section-cta {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.section-cta .section-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.section-cta p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    text-align: center;
}


/* ─── Footer ─── */

.site-footer {
    padding: var(--space-xl) var(--space-md);
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.04);
}

.site-footer p {
    font-size: 0.78rem;
    color: var(--text-secondary);
    opacity: 0.45;
}

.scene-icon-img {
    width: 40px;
    height: 40px;
}

.knowledge-img {
    width: 100%;
    border-radius: var(--radius-md);
    margin-bottom: var(--space-2);
}