/* ===== 全域設定 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg-primary: #080c18;
    --bg-secondary: #0f1629;
    --bg-card: #111827;
    --bg-card-hover: #1a2335;
    --color-cyan: #00d4ff;
    --color-purple: #7c3aed;
    --color-pink: #f472b6;
    --gradient: linear-gradient(135deg, var(--color-cyan), var(--color-purple));
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #475569;
    --border: #1e293b;
    --border-glow: rgba(0, 212, 255, 0.3);
    --font-main: 'Noto Sans TC', system-ui, sans-serif;
    --font-code: 'JetBrains Mono', 'Consolas', monospace;
    --radius: 12px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.15);
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
label { display: block; font-size: 0.85rem; color: var(--text-secondary); margin: 10px 0 4px; }

/* ===== 通用按鈕 ===== */
.btn-primary {
    display: inline-block;
    background: var(--gradient);
    color: #fff;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.2s;
}
.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }
.btn-primary.btn-large { padding: 16px 40px; font-size: 1.1rem; }

.btn-secondary {
    display: inline-block;
    background: transparent;
    color: var(--color-cyan);
    padding: 11px 28px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 1rem;
    border: 2px solid var(--color-cyan);
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
}
.btn-secondary:hover { background: rgba(0, 212, 255, 0.1); transform: translateY(-1px); }

.btn-shopee {
    background: #ee4d2d;
    color: #fff;
    padding: 8px 18px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.9rem;
    transition: opacity 0.2s;
}
.btn-shopee:hover { opacity: 0.85; }

.btn-login {
    background: transparent;
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid var(--border);
    cursor: pointer;
    font-size: 0.9rem;
    font-family: var(--font-main);
    transition: color 0.2s, border-color 0.2s;
}
.btn-login:hover, .btn-login.active { color: var(--color-cyan); border-color: var(--color-cyan); }

.btn-admin {
    background: rgba(124, 58, 237, 0.2);
    color: var(--color-purple);
    border: 1px solid var(--color-purple);
    padding: 8px 18px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-family: var(--font-main);
    transition: background 0.2s;
}
.btn-admin:hover { background: rgba(124, 58, 237, 0.35); }

.btn-danger {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.4);
    padding: 5px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8rem;
    font-family: var(--font-main);
    transition: background 0.2s;
}
.btn-danger:hover { background: rgba(239, 68, 68, 0.3); }

.hidden { display: none !important; }

/* ===== 導覽列 ===== */
#navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(8, 12, 24, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 900;
    font-size: 1.15rem;
    white-space: nowrap;
}
.brand-icon { font-size: 1.4rem; }

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
}
.nav-links a { color: var(--text-secondary); font-size: 0.9rem; transition: color 0.2s; }
.nav-links a:not(.btn-shopee):hover { color: var(--text-primary); }

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 4px 8px;
}

/* ===== Hero ===== */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px 24px 40px;
    position: relative;
    overflow: hidden;
}

.hero-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.04) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
}

.hero-content {
    max-width: 1100px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
    position: relative;
}

.hero-text { flex: 1; }

.hero-badge {
    display: inline-block;
    background: rgba(0, 212, 255, 0.1);
    color: var(--color-cyan);
    border: 1px solid rgba(0, 212, 255, 0.3);
    padding: 6px 16px;
    border-radius: 99px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.hero-text h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 1.6rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.hero-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

/* 程式碼視窗 */
.hero-card { flex: 0 0 380px; }

.code-window {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow), var(--shadow-glow);
}

.code-titlebar {
    background: #1a2335;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.red { background: #ff5f57; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #28ca41; }
.code-filename { margin-left: 8px; font-size: 0.8rem; color: var(--text-muted); font-family: var(--font-code); }

.code-body {
    padding: 20px 24px;
    font-family: var(--font-code);
    font-size: 0.85rem;
    line-height: 2;
}
.code-body p { white-space: pre; }

.c-keyword { color: #c792ea; }
.c-var { color: #82aaff; }
.c-func { color: #82aaff; }
.c-string { color: #c3e88d; }
.c-comment { color: #546e7a; }

.blink-cursor {
    color: var(--color-cyan);
    animation: blink 1s infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.scroll-hint {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-muted);
    font-size: 1.2rem;
    animation: bounce 2s infinite;
}
@keyframes bounce { 0%, 100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(8px); } }

/* ===== 共用 Section 樣式 ===== */
section { padding: 96px 24px; }

.section-container {
    max-width: 1100px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 12px;
}
.section-header h2 { font-size: clamp(1.6rem, 4vw, 2.2rem); font-weight: 900; margin-bottom: 8px; }
.section-header p { color: var(--text-secondary); font-size: 1rem; }

.admin-bar { text-align: center; margin: 16px 0; }

.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 60px 20px;
    font-size: 1rem;
}
.loading-msg {
    color: var(--text-muted);
    padding: 40px 0;
    font-size: 0.95rem;
    grid-column: 1 / -1;
}
.error-msg-inline {
    color: #f87171;
    padding: 40px 0;
    font-size: 0.95rem;
    grid-column: 1 / -1;
}

/* ===== 工具卡 ===== */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
    margin-top: 32px;
}

.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
    position: relative;
}
.tool-card:hover { border-color: var(--border-glow); transform: translateY(-3px); box-shadow: var(--shadow-glow); }

.tool-icon { font-size: 2.2rem; margin-bottom: 12px; }
.tool-name { font-size: 1.05rem; font-weight: 700; margin-bottom: 6px; }
.tool-desc { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.5; }

.tool-link {
    display: inline-block;
    margin-top: 14px;
    font-size: 0.85rem;
    color: var(--color-cyan);
    font-weight: 700;
}
.tool-link:hover { text-decoration: underline; }

.card-admin-btns {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    gap: 6px;
}

/* ===== 作品集卡 ===== */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.portfolio-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
    position: relative;
}
.portfolio-card:hover { border-color: rgba(124, 58, 237, 0.4); transform: translateY(-3px); box-shadow: 0 0 30px rgba(124, 58, 237, 0.12); }

.portfolio-icon { font-size: 2.4rem; margin-bottom: 14px; }
.portfolio-name { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.portfolio-desc { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: 14px; }

.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
    background: rgba(124, 58, 237, 0.15);
    color: #a78bfa;
    border: 1px solid rgba(124, 58, 237, 0.3);
    padding: 3px 10px;
    border-radius: 99px;
    font-size: 0.75rem;
    font-weight: 700;
}

.portfolio-link {
    display: inline-block;
    margin-top: 14px;
    font-size: 0.85rem;
    color: #a78bfa;
    font-weight: 700;
}
.portfolio-link:hover { text-decoration: underline; }

/* ===== 關於我們 ===== */
#about { background: var(--bg-secondary); }
#about h2 { font-size: clamp(1.6rem, 4vw, 2.2rem); font-weight: 900; text-align: center; margin-bottom: 8px; }
.about-lead { text-align: center; color: var(--color-cyan); font-weight: 700; font-size: 1.1rem; margin-bottom: 16px; }
.about-desc { text-align: center; color: var(--text-secondary); max-width: 700px; margin: 0 auto 48px; line-height: 1.8; }

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 48px;
}

.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    transition: border-color 0.2s;
}
.about-card:hover { border-color: var(--border-glow); }
.about-icon { font-size: 2rem; margin-bottom: 10px; }
.about-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.about-card p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.5; }

.why-us {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 36px;
    margin-bottom: 40px;
}
.why-us h3 { font-size: 1.2rem; font-weight: 900; margin-bottom: 20px; }
.why-us ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.why-us li { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.6; }
.why-us li strong { color: var(--text-primary); }

.flow-steps { margin-bottom: 32px; }
.flow-steps h3 { font-size: 1.2rem; font-weight: 900; text-align: center; margin-bottom: 28px; }

.steps-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}
.step {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    text-align: center;
    min-width: 130px;
}
.step-num {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: var(--gradient);
    color: #fff;
    font-weight: 900;
    font-size: 1rem;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 10px;
}
.step h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 4px; }
.step p { font-size: 0.8rem; color: var(--text-secondary); }
.step-arrow { font-size: 1.5rem; color: var(--text-muted); }

.notice {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 14px 20px;
}

/* ===== CTA ===== */
#cta {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.07), rgba(124, 58, 237, 0.07));
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    text-align: center;
}
.cta-container { max-width: 600px; margin: 0 auto; }
#cta h2 { font-size: clamp(1.6rem, 4vw, 2.2rem); font-weight: 900; margin-bottom: 12px; }
#cta p { color: var(--text-secondary); margin-bottom: 32px; font-size: 1.05rem; }

/* ===== Footer ===== */
footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 24px;
    text-align: center;
}
.footer-content {
    display: flex;
    gap: 16px;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    font-size: 0.85rem;
    color: var(--text-muted);
}
.footer-content a { color: var(--color-cyan); }
.footer-content a:hover { text-decoration: underline; }

/* ===== Modals ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.modal-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    width: 100%;
    max-width: 440px;
    box-shadow: var(--shadow);
}
.modal-box h3 { font-size: 1.2rem; font-weight: 900; margin-bottom: 6px; }
.modal-hint { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 16px; }

.modal-input {
    width: 100%;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 14px;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: var(--font-main);
    outline: none;
    transition: border-color 0.2s;
    resize: vertical;
}
.modal-input:focus { border-color: var(--color-cyan); }

.modal-buttons { display: flex; gap: 12px; margin-top: 20px; }
.modal-buttons .btn-primary, .modal-buttons .btn-secondary { flex: 1; text-align: center; }

.error-msg {
    color: #f87171;
    font-size: 0.85rem;
    margin-top: 8px;
}

/* ===== 驗證碼 ===== */
.captcha-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 8px;
}
.captcha-text {
    font-family: var(--font-code);
    color: var(--color-cyan);
    font-size: 1rem;
    background: rgba(0,212,255,0.08);
    border: 1px solid var(--border-glow);
    border-radius: 8px;
    padding: 8px 14px;
    white-space: nowrap;
    min-width: 100px;
    text-align: center;
}
.captcha-input {
    flex: 1;
    margin-top: 0 !important;
}

/* ===== Google 登入按鈕 ===== */
.btn-google {
    flex: 1;
    background: #fff;
    color: #3c4043;
    border: 1px solid #dadce0;
    border-radius: 8px;
    padding: 10px 16px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}
.btn-google:hover { background: #f8f9fa; }

/* ===== Modal 切換連結 ===== */
.modal-switch {
    text-align: center;
    margin-top: 14px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.modal-switch a {
    color: var(--color-cyan);
    text-decoration: none;
}
.modal-switch a:hover { text-decoration: underline; }

/* ===== 寬版 Modal（用戶管理）===== */
.modal-wide {
    max-width: 680px;
    width: 95vw;
}
.table-wrap { overflow-x: auto; }
.user-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}
.user-table th,
.user-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}
.user-table th {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.role-select {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 4px 8px;
    font-size: 0.85rem;
    cursor: pointer;
}
.owner-tag {
    color: var(--color-cyan);
    font-size: 0.8rem;
}

/* ===== 導覽列用戶資訊 ===== */
.user-info {
    color: var(--color-cyan);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 6px 10px;
    background: rgba(0,212,255,0.08);
    border-radius: 8px;
    white-space: nowrap;
}
.btn-mgmt {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    border-radius: 8px;
    padding: 6px 14px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}
.btn-mgmt:hover {
    border-color: var(--color-cyan);
    color: var(--color-cyan);
}

/* ===== 用戶管理分組 ===== */
.user-group { margin-bottom: 12px; }
.user-group-summary {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 4px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    list-style: none;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
    user-select: none;
}
.user-group-summary::-webkit-details-marker { display: none; }
.user-group-summary::before {
    content: '▶';
    font-size: 0.7rem;
    transition: transform 0.2s;
    color: var(--text-muted);
}
details[open] .user-group-summary::before { transform: rotate(90deg); }
.user-count {
    background: rgba(0,212,255,0.12);
    color: var(--color-cyan);
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 999px;
    font-weight: 700;
}

/* ===== 作品展示牆 ===== */
#showcase { background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary) 40%, var(--bg-primary)); }
#showcase .section-container { max-width: 1280px; }

.showcase-layout {
    display: grid;
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 28px;
    align-items: start;
    margin-top: 32px;
}
.showcase-sidebar {
    position: sticky;
    top: 88px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 14px;
}
.showcase-sidebar-title {
    color: var(--text-muted);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    margin: 0 6px 12px;
}
.showcase-sidebar-cta {
    margin-top: 18px;
    padding: 14px 8px 2px;
    border-top: 1px solid var(--border);
    font-size: 0.82rem;
    color: var(--text-secondary);
}
.showcase-sidebar-cta a { display: inline-block; margin-top: 4px; color: var(--color-cyan); font-weight: 700; }
.showcase-sidebar-cta a:hover { text-decoration: underline; }

.showcase-filters {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.showcase-filter {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    width: 100%;
    text-align: left;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid transparent;
    padding: 10px 14px;
    border-radius: 10px;
    font: 700 0.9rem var(--font-main);
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.showcase-filter span {
    background: rgba(148, 163, 184, 0.15);
    border-radius: 99px;
    padding: 0 8px;
    font-size: 0.75rem;
}
.showcase-filter:hover { color: var(--text-primary); background: var(--bg-card-hover); border-color: var(--border); }
.showcase-filter.active { background: var(--gradient); color: #fff; border-color: transparent; }
.showcase-filter.active span { background: rgba(255, 255, 255, 0.25); }

.showcase-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.showcase-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
    animation: showcaseFadeIn 0.35s ease both;
}
.showcase-card:hover,
.showcase-card:focus-visible { border-color: var(--border-glow); transform: translateY(-4px); box-shadow: var(--shadow-glow); outline: none; }
@keyframes showcaseFadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

.showcase-thumb {
    position: relative;
    aspect-ratio: 8 / 5;
    overflow: hidden;
    background: var(--bg-secondary);
}
.showcase-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}
.showcase-card:hover .showcase-thumb img { transform: scale(1.05); }

.showcase-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(8, 12, 24, 0.82);
    color: var(--color-cyan);
    border: 1px solid var(--border-glow);
    padding: 3px 12px;
    border-radius: 99px;
    font-size: 0.75rem;
    font-weight: 700;
    backdrop-filter: blur(4px);
}
.showcase-badge.static { position: static; display: inline-block; }

.showcase-zoom {
    position: absolute;
    right: 12px;
    bottom: 12px;
    background: rgba(8, 12, 24, 0.82);
    color: #fff;
    padding: 4px 12px;
    border-radius: 99px;
    font-size: 0.75rem;
    opacity: 0;
    transform: translateY(6px);
    transition: opacity 0.2s, transform 0.2s;
}
.showcase-card:hover .showcase-zoom { opacity: 1; transform: none; }

.showcase-count {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(8, 12, 24, 0.82);
    color: #fff;
    padding: 3px 10px;
    border-radius: 99px;
    font-size: 0.72rem;
    font-weight: 700;
}

.showcase-minis {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    padding: 8px 10px 0;
}
.showcase-mini {
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
    background: var(--bg-secondary);
    cursor: pointer;
    transition: border-color 0.2s, transform 0.2s;
}
.showcase-mini img { width: 100%; display: block; aspect-ratio: 8 / 5; object-fit: cover; }
.showcase-mini:hover,
.showcase-mini:focus-visible { border-color: var(--color-cyan); transform: translateY(-2px); outline: none; }

.showcase-body { padding: 18px 20px 20px; }
.showcase-body h3 { font-size: 1.08rem; font-weight: 700; margin-bottom: 6px; }
.showcase-body p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: 12px; }

.showcase-note {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-top: 28px;
}

/* 燈箱 */
.showcase-lightbox {
    position: fixed;
    inset: 0;
    z-index: 300;
    background: rgba(2, 6, 16, 0.88);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}
.lightbox-box {
    position: relative;
    width: 100%;
    max-width: 1080px;
    max-height: calc(100vh - 48px);
    overflow-y: auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    box-shadow: var(--shadow);
}
.lightbox-media {
    background: #05080f;
    display: flex;
    flex-direction: column;
    min-width: 0;
}
.lightbox-stage { position: relative; }
.lightbox-stage img { width: 100%; display: block; aspect-ratio: 8 / 5; object-fit: contain; }
.lightbox-caption {
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-align: center;
    padding: 10px 12px 4px;
}
.lightbox-thumbs {
    display: flex;
    gap: 8px;
    padding: 8px 12px 14px;
    overflow-x: auto;
}
.lightbox-thumb {
    flex: 0 0 auto;
    width: 96px;
    padding: 0;
    border: 2px solid transparent;
    border-radius: 6px;
    overflow: hidden;
    background: none;
    cursor: pointer;
    opacity: 0.55;
    transition: opacity 0.2s, border-color 0.2s;
}
.lightbox-thumb img { width: 100%; display: block; aspect-ratio: 8 / 5; }
.lightbox-thumb:hover { opacity: 0.9; }
.lightbox-thumb.active { opacity: 1; border-color: var(--color-cyan); }
.lightbox-item-nav { display: flex; gap: 8px; }
.lightbox-item-nav .btn-secondary { flex: 1; padding: 8px 10px; font-size: 0.85rem; }
.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border-glow);
    background: rgba(8, 12, 24, 0.75);
    color: #fff;
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    transition: background 0.2s;
}
.lightbox-nav:hover { background: rgba(0, 212, 255, 0.25); }
.lightbox-nav.prev { left: 12px; }
.lightbox-nav.next { right: 12px; }
.lightbox-close {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 2;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: rgba(8, 12, 24, 0.8);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.95rem;
}
.lightbox-close:hover { color: #fff; border-color: var(--border-glow); }

.lightbox-info { padding: 28px 26px; display: flex; flex-direction: column; gap: 12px; }
.lightbox-meta { display: flex; align-items: center; gap: 12px; }
.lightbox-counter { color: var(--text-muted); font-size: 0.8rem; font-family: var(--font-code); }
.lightbox-info h3 { font-size: 1.35rem; font-weight: 900; }
.lightbox-info p { color: var(--text-secondary); font-size: 0.92rem; line-height: 1.7; }
.lightbox-features { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.lightbox-features li { font-size: 0.9rem; padding-left: 22px; position: relative; }
.lightbox-features li::before { content: '✓'; position: absolute; left: 0; color: var(--color-cyan); font-weight: 900; }
.lightbox-cta { text-align: center; margin-top: auto; }

@media (max-width: 860px) {
    .showcase-layout { grid-template-columns: minmax(0, 1fr); gap: 20px; margin-top: 24px; }
    .showcase-sidebar { position: static; padding: 0; background: none; border: none; min-width: 0; }
    .showcase-sidebar-title, .showcase-sidebar-cta { display: none; }
    .showcase-filters { flex-direction: row; overflow-x: auto; padding-bottom: 6px; scrollbar-width: none; }
    .showcase-filter { width: auto; flex: 0 0 auto; border-radius: 99px; padding: 8px 16px; background: var(--bg-card); border-color: var(--border); }
    .lightbox-box { grid-template-columns: 1fr; }
    .lightbox-info { padding: 20px; }
}
@media (max-width: 640px) {
    .showcase-grid { grid-template-columns: minmax(0, 1fr); }
    .showcase-lightbox { padding: 12px; }
    .lightbox-box { max-height: calc(100vh - 24px); }
}

/* ===== RWD ===== */
@media (max-width: 900px) {
    .hero-content { flex-direction: column; text-align: center; }
    .hero-buttons { justify-content: center; }
    .hero-card { width: 100%; max-width: 480px; flex: none; }
    .steps-row { flex-direction: column; }
    .step-arrow { transform: rotate(90deg); }
}

@media (max-width: 640px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 64px; left: 0; right: 0;
        background: rgba(8, 12, 24, 0.97);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: 20px 24px;
        gap: 16px;
        align-items: flex-start;
    }
    .nav-links.open { display: flex; }
    .nav-toggle { display: block; }
    section { padding: 64px 16px; }
    .why-us { padding: 24px 20px; }
}