/* ========== 全域變數 & Reset ========== */
:root {
    --bg-primary: #0a0a1a;
    --bg-secondary: #0f0f2e;
    --bg-card: rgba(15, 15, 46, 0.7);
    --bg-card-hover: rgba(25, 25, 60, 0.85);

    --text-primary: #e0e0ff;
    --text-secondary: #8888bb;
    --text-muted: #5555aa;

    --accent-blue: #00d4ff;
    --accent-purple: #a855f7;
    --accent-pink: #ff6be6;
    --accent-cyan: #06ffa5;

    --gradient-primary: linear-gradient(135deg, #00d4ff, #a855f7, #ff6be6);
    --gradient-secondary: linear-gradient(135deg, #a855f7, #ff6be6, #00d4ff);
    --gradient-glow: linear-gradient(135deg, rgba(0,212,255,0.3), rgba(168,85,247,0.3), rgba(255,107,230,0.3));

    --border-color: rgba(168, 85, 247, 0.2);
    --border-glow: rgba(0, 212, 255, 0.5);

    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.15), 0 0 40px rgba(168, 85, 247, 0.1);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);

    --font-tech: 'Orbitron', 'Rajdhani', monospace;
    --font-body: 'Rajdhani', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --nav-height: 70px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    font-size: 16px;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    height: auto;
}

/* ========== Canvas 粒子背景 ========== */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ========== 容器 ========== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

/* ========== 導航列 ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    background: rgba(10, 10, 26, 0.8);
    border-bottom: 1px solid var(--border-color);
}

.navbar.scrolled {
    background: rgba(10, 10, 26, 0.95);
    border-bottom-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-tech);
    font-size: 1.5rem;
    font-weight: 900;
    display: flex;
    align-items: center;
    gap: 2px;
}

.logo-bracket {
    color: var(--accent-blue);
    font-weight: 400;
}

.logo-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 5px;
}

.nav-link {
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: rgba(168, 85, 247, 0.1);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 1px;
}

/* ========== Hero 區域 ========== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 800px;
}

.hero-title {
    font-family: var(--font-tech);
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    line-height: 1.1;
    position: relative;
    animation: titleGlow 3s ease-in-out infinite alternate;
}

@keyframes titleGlow {
    from { filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.3)); }
    to { filter: drop-shadow(0 0 40px rgba(168, 85, 247, 0.5)); }
}

/* Glitch 效果 */
.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0;
}

.glitch:hover::before {
    animation: glitch1 0.3s infinite;
    opacity: 0.8;
    clip-path: polygon(0 0, 100% 0, 100% 45%, 0 45%);
}

.glitch:hover::after {
    animation: glitch2 0.3s infinite;
    opacity: 0.8;
    clip-path: polygon(0 55%, 100% 55%, 100% 100%, 0 100%);
}

@keyframes glitch1 {
    0% { transform: translate(2px, -2px); }
    25% { transform: translate(-2px, 2px); }
    50% { transform: translate(2px, 1px); }
    75% { transform: translate(-1px, -2px); }
    100% { transform: translate(2px, -2px); }
}

@keyframes glitch2 {
    0% { transform: translate(-2px, 2px); }
    25% { transform: translate(2px, -1px); }
    50% { transform: translate(-1px, 2px); }
    75% { transform: translate(2px, -2px); }
    100% { transform: translate(-2px, 2px); }
}

.hero-subtitle {
    font-family: var(--font-tech);
    font-size: clamp(1rem, 2.5vw, 1.4rem);
    color: var(--accent-blue);
    margin-bottom: 20px;
    letter-spacing: 3px;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

/* 按鈕 */
.btn {
    padding: 12px 32px;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-glow);
}

.btn-outline:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

/* 滾動指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    animation: bounce 2s infinite;
    color: var(--text-muted);
    font-size: 0.8rem;
}

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid var(--text-muted);
    border-radius: 13px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--accent-blue);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: wheel 1.5s infinite;
}

@keyframes wheel {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

/* ========== 區塊通用 ========== */
.section {
    padding: 100px 0;
    position: relative;
    z-index: 1;
}

.section-alt {
    background: rgba(15, 15, 46, 0.3);
}

.section-title {
    font-family: var(--font-tech);
    font-size: clamp(1.5rem, 4vw, 2.2rem);
    text-align: center;
    margin-bottom: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.title-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: var(--gradient-glow);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--accent-blue);
}

/* 淡入動畫 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========== 公告欄 ========== */
.announcements-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 800px;
    margin: 0 auto;
}

.announcement-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.announcement-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-purple);
    box-shadow: var(--shadow-glow);
    transform: translateX(5px);
}

.announcement-date {
    font-size: 0.85rem;
    color: var(--accent-blue);
    margin-bottom: 8px;
    font-family: var(--font-tech);
}

.announcement-title {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.announcement-content {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ========== 空狀態 ========== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
    grid-column: 1 / -1;
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 16px;
    display: block;
}

.empty-state.full-width {
    grid-column: 1 / -1;
}

/* ========== 關於我們 ========== */
.about-block {
    display: flex;
    gap: 40px;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    backdrop-filter: blur(10px);
    margin-bottom: 24px;
}

.about-image {
    flex: 0 0 300px;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.about-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.about-text {
    flex: 1;
}

.about-text.full-width {
    text-align: center;
}

.about-text h3 {
    font-family: var(--font-tech);
    font-size: 1.5rem;
    margin-bottom: 16px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-text p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
}

/* ========== 服務項目 ========== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 36px 28px;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-purple);
    box-shadow: var(--shadow-glow);
    transform: translateY(-8px);
}

.service-icon {
    width: 70px;
    height: 70px;
    border-radius: 16px;
    background: var(--gradient-glow);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.8rem;
    color: var(--accent-blue);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    border-color: var(--accent-blue);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

.service-card h3 {
    font-family: var(--font-tech);
    font-size: 1.15rem;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ========== 統計數據 ========== */
.stats-section {
    background: var(--gradient-glow);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 80px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    text-align: center;
}

.stat-item {
    padding: 20px;
}

.stat-number {
    font-family: var(--font-tech);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.stat-number::after {
    content: '+';
    font-size: 0.6em;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: 8px;
    font-weight: 500;
}

/* ========== 廣告區 / 輪播 ========== */
.ads-carousel {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.ads-track {
    display: flex;
    transition: transform 0.5s ease;
}

.ad-slide {
    min-width: 100%;
    position: relative;
}

.ad-slide a {
    display: block;
}

.ad-slide img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.ad-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 30px;
    background: linear-gradient(transparent, rgba(10, 10, 26, 0.9));
}

.ad-overlay h3 {
    font-family: var(--font-tech);
    font-size: 1.3rem;
}

.ads-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(10, 10, 26, 0.7);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.ads-btn:hover {
    background: rgba(168, 85, 247, 0.3);
    border-color: var(--accent-purple);
}

.ads-prev { left: 10px; }
.ads-next { right: 10px; }

.ads-dots {
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 2;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--accent-blue);
    box-shadow: 0 0 10px var(--accent-blue);
}

/* ========== 團隊成員 ========== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.team-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 36px 24px;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.team-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-pink);
    box-shadow: 0 0 20px rgba(255, 107, 230, 0.15);
    transform: translateY(-5px);
}

.team-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 20px;
    overflow: hidden;
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.team-card:hover .team-avatar {
    border-color: var(--accent-pink);
    box-shadow: 0 0 20px rgba(255, 107, 230, 0.3);
}

.team-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-placeholder {
    width: 100%;
    height: 100%;
    background: var(--gradient-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--text-muted);
}

.team-name {
    font-family: var(--font-tech);
    font-size: 1.15rem;
    margin-bottom: 4px;
}

.team-role {
    color: var(--accent-purple);
    font-size: 0.9rem;
    margin-bottom: 12px;
    font-weight: 600;
}

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

/* ========== 聯絡我們 ========== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.contact-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(6, 255, 165, 0.15);
    transform: translateY(-5px);
}

.contact-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-glow);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.4rem;
    color: var(--accent-cyan);
}

.contact-type {
    font-family: var(--font-tech);
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.contact-value {
    color: var(--text-primary);
    font-size: 1.05rem;
    font-weight: 500;
}

/* ========== 左側子網頁導航列 ========== */
.side-nav {
    position: fixed;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 10px 8px;
    width: 50px;
    background: rgba(10, 10, 26, 0.7);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-left: none;
    border-radius: 0 14px 14px 0;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.side-nav:hover {
    width: 180px;
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
}

.side-nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px;
    border-radius: 10px;
    color: var(--text-secondary);
    text-decoration: none;
    white-space: nowrap;
    transition: var(--transition);
}

.side-nav-item:hover {
    color: var(--text-primary);
    background: rgba(168, 85, 247, 0.1);
}

.side-nav-item.active {
    color: var(--accent-blue);
    background: rgba(0, 212, 255, 0.1);
}

.side-nav-item.active .side-nav-icon {
    filter: drop-shadow(0 0 6px rgba(0, 212, 255, 0.5));
}

.side-nav-icon {
    font-size: 1.15rem;
    flex-shrink: 0;
    width: 20px;
    text-align: center;
}

.side-nav-label {
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    opacity: 0;
    width: 0;
    overflow: hidden;
    transition: opacity 0.2s ease 0.05s, width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.side-nav:hover .side-nav-label {
    opacity: 1;
    width: 100px;
}

/* 手機版：底部橫向導航列 */
@media (max-width: 768px) {
    .side-nav {
        top: auto;
        bottom: 0;
        left: 0;
        right: 0;
        transform: none;
        width: 100% !important;
        flex-direction: row;
        justify-content: center;
        gap: 8px;
        padding: 8px 16px;
        border-radius: 14px 14px 0 0;
        border: 1px solid var(--border-color);
        border-bottom: none;
    }

    .side-nav:hover {
        width: 100% !important;
        box-shadow: 0 -4px 20px rgba(0, 212, 255, 0.1);
    }

    .side-nav-label {
        opacity: 1;
        width: auto;
    }

    .side-nav-item {
        padding: 8px 16px;
    }
}

/* ========== 頁腳 ========== */
.footer {
    background: rgba(5, 5, 15, 0.9);
    border-top: 1px solid var(--border-color);
    padding: 40px 0;
    position: relative;
    z-index: 1;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.footer-logo {
    font-family: var(--font-tech);
    font-size: 1.3rem;
    font-weight: 900;
}

.footer-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: var(--text-secondary);
    transition: var(--transition);
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: var(--accent-blue);
}

.footer-text {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ========== 技術棧 ========== */
.tech-filter {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tech-filter-btn {
    padding: 8px 20px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.tech-filter-btn:hover {
    border-color: var(--accent-purple);
    color: var(--text-primary);
}

.tech-filter-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.tech-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 28px 20px 20px;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.tech-card.hidden {
    display: none;
}

.tech-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-glow);
    transform: translateY(-5px);
}

.tech-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: var(--gradient-glow);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
    font-size: 1.6rem;
    color: var(--accent-blue);
    transition: var(--transition);
}

.tech-card:hover .tech-icon {
    border-color: var(--accent-blue);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
}

.tech-name {
    font-family: var(--font-tech);
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.tech-category {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 14px;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(168, 85, 247, 0.1);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 4px;
    width: 0;
    transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.progress-text {
    position: absolute;
    right: 0;
    top: -22px;
    font-size: 0.75rem;
    color: var(--accent-blue);
    font-family: var(--font-tech);
    font-weight: 700;
    opacity: 0;
    transition: opacity 0.3s ease 1s;
}

.progress-fill.animated .progress-text {
    opacity: 1;
}

/* ========== 數據視覺化 ========== */
.dataviz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 30px;
}

.dataviz-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    backdrop-filter: blur(10px);
}

.dataviz-card-title {
    font-family: var(--font-tech);
    font-size: 1.05rem;
    margin-bottom: 24px;
    text-align: center;
    color: var(--text-secondary);
}

.donut-chart-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

#donutChart {
    max-width: 220px;
    max-height: 220px;
}

.donut-legend {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px 20px;
}

.donut-legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.donut-legend-color {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

.bar-chart {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.bar-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.bar-label {
    width: 100px;
    font-family: var(--font-tech);
    font-size: 0.85rem;
    text-align: right;
    flex-shrink: 0;
}

.bar-track {
    flex: 1;
    height: 24px;
    background: rgba(168, 85, 247, 0.1);
    border-radius: 6px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 6px;
    width: 0;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.bar-value {
    width: 45px;
    font-family: var(--font-tech);
    font-size: 0.85rem;
    color: var(--accent-blue);
    font-weight: 700;
    flex-shrink: 0;
}

/* ========== FAQ 手風琴 ========== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--accent-purple);
}

.faq-item.active {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-glow);
}

.faq-question {
    width: 100%;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
    gap: 16px;
}

.faq-icon {
    color: var(--accent-blue);
    transition: transform 0.3s ease;
    flex-shrink: 0;
    font-size: 0.9rem;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
    color: var(--accent-pink);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 0 24px 20px;
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 0.95rem;
}

/* ========== 聯絡表單 ========== */
.contact-form-wrapper {
    max-width: 650px;
    margin: 0 auto;
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 36px;
    backdrop-filter: blur(10px);
}

.contact-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.contact-form .form-group {
    margin-bottom: 20px;
}

.contact-form label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.contact-form label i {
    margin-right: 6px;
    color: var(--accent-blue);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(10, 10, 30, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

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

.btn-submit {
    width: 100%;
    justify-content: center;
    padding: 14px;
    font-size: 1.05rem;
}

.form-status {
    text-align: center;
    margin-top: 16px;
    font-size: 0.95rem;
    min-height: 24px;
}

.form-status.success {
    color: var(--accent-cyan);
}

.form-status.error {
    color: #ff4757;
}

/* ========== 響應式設計 ========== */
@media (max-width: 768px) {
    body {
        padding-bottom: 56px;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: rgba(10, 10, 26, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px;
        gap: 5px;
        transform: translateY(-100%);
        opacity: 0;
        transition: var(--transition);
        border-bottom: 1px solid var(--border-color);
        pointer-events: none;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .about-block {
        flex-direction: column;
        padding: 24px;
    }

    .about-image {
        flex: none;
        width: 100%;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .ad-slide img {
        height: 200px;
    }

    .dataviz-grid {
        grid-template-columns: 1fr;
    }

    .contact-form .form-row {
        grid-template-columns: 1fr;
    }

    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .bar-label {
        width: 70px;
        font-size: 0.75rem;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }
}