/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6C63FF;
    --secondary-color: #FF6584;
    --dark-bg: #0a0a0f;
    --darker-bg: #050508;
    --card-bg: #1a1a2e;
    --card-hover: #252538;
    --text-light: #e0e0e0;
    --text-muted: #a0a0a0;
    --border-color: rgba(255, 255, 255, 0.1);
    --gradient: linear-gradient(135deg, #6C63FF 0%, #FF6584 100%);
    --gradient-dark: linear-gradient(135deg, rgba(108, 99, 255, 0.2) 0%, rgba(255, 101, 132, 0.2) 100%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang TC', 'Microsoft JhengHei', sans-serif;
    line-height: 1.6;
    color: var(--text-light);
    background-color: var(--dark-bg);
    background-image: url('../images/App_background_fix.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        to bottom,
        rgba(30, 30, 50, 0.85) 0%,      /* 上方：暗紫色 */
        rgba(25, 25, 40, 0.86) 15%,     /* 早期過渡 */
        rgba(20, 20, 30, 0.87) 30%,     /* 繼續過渡 */
        rgba(15, 15, 25, 0.88) 45%,     /* 中間過渡 */
        rgba(12, 12, 20, 0.89) 60%,     /* 繼續變深 */
        rgba(8, 8, 12, 0.90) 75%,       /* 更深 */
        rgba(5, 5, 8, 0.91) 90%,        /* 接近黑色 */
        rgba(3, 3, 5, 0.92) 100%        /* 下方：深黑色 */
    );
    z-index: -1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navigation */
.header {
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.5);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo h1 {
    font-size: 2rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo a {
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-light);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    position: relative;
    color: var(--white);
    padding: 120px 0 80px;
    text-align: center;
    overflow: hidden;
    min-height: 600px;
    display: flex;
    align-items: center;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: transparent;
    z-index: 0;
}

.hero-background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-dark);
    opacity: 0.3;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.hero-logo {
    width: 150px;
    height: auto;
    margin-bottom: 2rem;
    animation: fadeInDown 1s ease;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 3rem;
    opacity: 0.95;
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 3rem;
    animation: fadeInUp 1s ease 0.6s both;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.8s both;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(108, 99, 255, 0.4);
    filter: brightness(1.1);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
}

/* How It Works Section */
.how-it-works {
    padding: 80px 0;
    background: transparent;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.step-card {
    position: relative;
    background: rgba(26, 26, 46, 0.6);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.step-card:hover {
    transform: translateY(-5px);
    background: rgba(37, 37, 56, 0.7);
    box-shadow: 0 10px 30px rgba(108, 99, 255, 0.3);
}

.step-number {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    box-shadow: 0 5px 15px rgba(108, 99, 255, 0.4);
}

.step-image {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 50%;
    margin: 1rem auto;
    border: 2px solid var(--border-color);
}

.step-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

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

/* Features Section */
.features {
    padding: 80px 0;
    background: transparent;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.feature-card {
    position: relative;
    background: rgba(26, 26, 46, 0.5);
    border-radius: 20px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    height: 300px;
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(108, 99, 255, 0.4);
    border-color: var(--primary-color);
}

.feature-image-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.feature-bg {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.feature-card:hover .feature-bg {
    transform: scale(1.1);
}

.feature-image-wrapper::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(10,10,15,0.5), rgba(10,10,15,0.9));
}

.feature-content {
    position: relative;
    z-index: 1;
    padding: 2rem;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    color: white;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 10px rgba(108, 99, 255, 0.5));
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: white;
}

.feature-card p {
    color: rgba(255,255,255,0.85);
    line-height: 1.6;
}

/* Venues Section */
.venues {
    padding: 80px 0;
    background: transparent;
}

.venues-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.venue-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.5);
    transition: transform 0.3s, box-shadow 0.3s;
    height: 350px;
    border: 1px solid var(--border-color);
}

.venue-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(255, 101, 132, 0.3);
    border-color: var(--secondary-color);
}

.venue-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.venue-card:hover .venue-image {
    transform: scale(1.1);
}

.venue-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2rem;
    background: linear-gradient(to top, rgba(10,10,15,0.95), transparent);
    color: white;
}

.venue-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.venue-info p {
    opacity: 0.85;
}

/* Download Section */
.download {
    padding: 80px 0;
    text-align: center;
    background: transparent;
    position: relative;
}

.download .container {
    position: relative;
    z-index: 1;
}

.download-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.download-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.store-button {
    display: inline-block;
    transition: transform 0.3s;
}

.store-button:hover {
    transform: scale(1.05);
}

.store-button img {
    height: 50px;
    width: auto;
}

/* Footer */
.footer {
    background: rgba(5, 5, 8, 0.7);
    color: var(--text-light);
    padding: 3rem 0 1rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--text-light);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.5);
}

/* Legal Pages */
.legal-page {
    padding: 60px 0;
    max-width: 900px;
    margin: 0 auto;
    background: transparent;
}

.legal-page h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.update-date {
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-style: italic;
}

.legal-section {
    margin-bottom: 2.5rem;
    padding: 2rem;
    background: rgba(26, 26, 46, 0.6);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.legal-section h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.legal-section h3 {
    font-size: 1.3rem;
    margin: 1.5rem 0 0.8rem;
    color: var(--text-light);
}

.legal-section p {
    margin-bottom: 1rem;
    line-height: 1.8;
    color: var(--text-muted);
}

.legal-section ul {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.legal-section li {
    margin-bottom: 0.5rem;
    line-height: 1.8;
    color: var(--text-muted);
}

.legal-section a {
    color: var(--primary-color);
    text-decoration: none;
}

.legal-section a:hover {
    text-decoration: underline;
    color: var(--secondary-color);
}

/* Error Page */
.error-page {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: transparent;
}

.error-page h1 {
    font-size: 8rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.error-page h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.error-page p {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .hero {
        padding: 80px 0 60px;
        min-height: 500px;
    }

    .hero-logo {
        width: 100px;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-stats {
        gap: 1.5rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .stat-label {
        font-size: 0.9rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    .features-grid,
    .steps-grid,
    .venues-grid {
        grid-template-columns: 1fr;
    }

    .feature-card {
        height: 250px;
    }

    .venue-card {
        height: 300px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .legal-page h1 {
        font-size: 2rem;
    }

    .legal-section h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 60px 0 40px;
        min-height: 450px;
    }

    .hero-logo {
        width: 80px;
        margin-bottom: 1.5rem;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .stat-number {
        font-size: 1.8rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .step-image {
        width: 80px;
        height: 80px;
    }

    .feature-card {
        height: 220px;
    }

    .feature-content {
        padding: 1.5rem;
    }

    .feature-icon {
        font-size: 2.5rem;
    }

    .venue-card {
        height: 250px;
    }
}