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

:root {
    /* Colors from Figma */
    --color-primary: #38BDF8;
    --color-dark-bg: #020617;
    --color-dark-bg-light: #0F172A;
    --color-white: #FFFFFF;
    --color-gray-50: #F9FAFB;
    --color-gray-200: #E5E7EB;
    --color-gray-400: #9CA3AF;
    --color-blue: #1D4ED8;
    --color-green: #059669;
    --color-yellow: #F59E0B;
    --color-gradient-start: #4CAC74;
    --color-gradient-end: #F0CF40;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-heading: 'Poppins', sans-serif;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    background: var(--color-gray-50);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #020617 0%, #0F172A 100%);
    color: var(--color-white);
    padding: 60px 0 120px;
    position: relative;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('images/hero-bg.png') center/cover no-repeat, 
                radial-gradient(circle at 30% 50%, rgba(56, 189, 248, 0.1), transparent);
    opacity: 0.1;
    z-index: 0;
}

.hero .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto 1fr;
    grid-template-areas:
        "logo visual"
        "content visual";
    gap: 60px;
    align-items: stretch;
    min-height: 560px;
}

.hero-left {
    max-width: 600px;
}

.hero-right {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Ensure new hero visual wrapper centers content */
.hero-visual {
    grid-area: visual;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-phone {
    max-width: 100%;
    height: auto;
    filter: none;
    animation: none;
}

/* Plain images on the right */
.hero-images {
    display: flex;
    gap: 24px;
    justify-content: center;
    align-items: center;
    flex-wrap: nowrap;
}

.hero-img {
    height: 520px;
    width: auto;
    border: none;
    box-shadow: none;
    border-radius: 0;
    object-fit: cover;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 60px;
}
.logo { grid-area: logo; align-self: start; }

.logo-icon {
    width: 64px;
    height: 64px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.logo-image {
    height: 100%;
    object-fit: cover;
}

/* 圖片載入失敗時的備用樣式 */

img[alt]:after {
    content: attr(alt);
    display: block;
    text-align: center;
    padding: 20px;
    color: #666;
    font-size: 14px;
}

.logo-text {
    font-family: var(--font-family-heading);
    font-size: 3.8rem;
    font-weight: 700;
    background: linear-gradient(124deg, #4CAC74 27%, #F0CF40 77%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content {
    max-width: 600px;
}
.hero-content { grid-area: content; align-self: end; transform: translateY(-20px); }

.hero-title {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 16px;
    color: #FFFDFD;
}

.hero-description {
    font-size: 1rem;
    margin-bottom: 32px;
    color: #FFFDFD;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

/* Google Play badge */
.play-badge-link {
    display: inline-flex;
}

.play-badge {
    height: 48px;
    width: auto;
    image-rendering: -webkit-optimize-contrast;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-icon {
    width: 20px;
    height: 20px;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    border: 1.5px solid var(--color-primary);
}

.btn-primary:hover {
    background: #0EA5E9;
    border-color: #0EA5E9;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #FFE4E4;
    border: 1.5px solid var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

/* Section Styles */
.section {
    padding: 80px 0;
}

.section-tag {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

.tag-hardware {
    background: rgba(17, 0, 255, 0.1);
    color: #1100FF;
    border: 1px solid #E5E7EB;
}

.tag-ai {
    background: rgba(56, 189, 248, 0.1);
    color: var(--color-primary);
}

.tag-app {
    background: rgba(56, 189, 248, 0.1);
    color: var(--color-primary);
}

.tag-market {
    background: rgba(56, 189, 248, 0.1);
    color: var(--color-primary);
}

.section-title {
    font-size: 2rem;
    font-weight: 400;
    margin-bottom: 16px;
    color: #000000;
}

.section-description {
    font-size: 1rem;
    color: #666;
    margin-bottom: 32px;
    max-width: 600px;
}

/* IMU Section */
.section-imu {
    background: #CCCACA;
    border: 1px solid #E5E7EB;
    border-radius: 12px;
    margin: 40px auto;
    max-width: 1280px;
}

.section-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.feature-list {
    list-style: none;
    margin-top: 24px;
}

.feature-list li {
    margin-bottom: 12px;
    color: #000000;
    font-size: 0.95rem;
}

.imu-illustration {
    background: var(--color-dark-bg-light);
    border: 1.5px solid #1E293B;
    border-radius: 12px;
    padding: 40px;
    text-align: center;
}

.imu-device-img {
    width: 100%;
    height: auto;
    max-width: 300px;
    margin: 0 auto 16px;
    display: block;
    border-radius: 8px;
}

.illustration-caption {
    color: var(--color-gray-400);
    font-size: 0.9rem;
}

/* Multimodal Section */
.section-multimodal {
    background: #BECCDF;
    padding: 80px 0;
}

.multi-col-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 40px;
}

.multi-col-card {
    background: var(--color-white);
    border: 1px solid #000000;
    border-radius: 8px;
    padding: 32px 28px;
}

.multimodal-visuals {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 40px;
    flex-wrap: wrap;
}

.multimodal-img {
    max-width: 45%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

.multimodal-img:hover {
    transform: scale(1.05);
}

.card-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
    color: var(--color-white);
}

.card-icon svg {
    width: 100%;
    height: 100%;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: #000;
}

.card-list {
    list-style: none;
}

.card-list li {
    margin-bottom: 12px;
    font-size: 0.95rem;
    color: #000;
}

/* App Section */
.section-app {
    background: var(--color-white);
    padding: 80px 0;
}

.app-mockup {
    display: flex;
    justify-content: center;
    align-items: center;
}

.app-screenshot {
    max-width: 100%;
    height: auto;
    max-height: 600px;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

.app-screenshot:hover {
    transform: scale(1.02);
}

/* Business Section */
.section-business {
    background: #0B1120;
    color: var(--color-white);
    padding: 80px 0;
}

.section-business .section-title,
.section-business .section-description {
    color: var(--color-gray-50);
}

.biz-cols {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 40px;
}

.biz-card {
    background: var(--color-dark-bg);
    border: 1px solid #1E293B;
    border-radius: 8px;
    padding: 32px 28px;
}

.biz-icon {
    width: 48px;
    height: 48px;
    color: var(--color-gray-200);
    margin-bottom: 16px;
}

.biz-icon svg {
    width: 100%;
    height: 100%;
}

.biz-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: #E5E7EB;
}

.biz-card .card-list li {
    color: var(--color-gray-400);
}

.business-visual {
    margin-top: 40px;
    text-align: center;
}

.business-img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

/* CTA Section */
.section-cta {
    background: var(--color-white);
    padding: 80px 0;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.cta-title {
    font-size: 2rem;
    margin-bottom: 24px;
    color: #000;
}

.cta-description {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 40px;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: 24px;
    justify-content: center;
    margin-bottom: 48px;
}

.contact-info {
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid #E5E7EB;
}

.contact-info p {
    color: #666;
    font-size: 0.95rem;
    margin: 4px 0;
}

.contact-logo {
    display: block;
    margin: 16px auto 0;
    max-width: 200px;
    height: auto;
}

/* Footer */
.footer {
    background: #F9FAFB;
    padding: 32px 0;
    text-align: center;
    border-top: 1px solid #E5E7EB;
}

.footer-logo {
    max-width: 200px;
    height: auto;
    margin-bottom: 16px;
}

.footer p {
    color: #666;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .multi-col-grid,
    .biz-cols {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .section-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
        grid-template-areas:
            "logo"
            "content"
            "visual";
        min-height: auto;
    }
    
    .hero-phone {
        max-width: 400px;
    }
    .hero-img { height: 460px; }
    
    .multimodal-img {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 24px;
    }
    
    .logo-text {
        font-size: 2.5rem;
    }
    
    .hero-title {
        font-size: 1.25rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    /* Remove upward nudge on small screens */
    .hero-content { transform: none; }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .hero-phone {
        max-width: 300px;
    }
    .hero-img { height: 360px; }
    
    .app-screenshot {
        max-height: 400px;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

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

.section {
    animation: fadeInUp 0.6s ease-out;
}