/* ===== SGH Voice Landing Page — style.css ===== */

/* --- Reset & Variables --- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box
}

:root {
    --color-primary: #2563eb;
    --color-primary-light: #3b82f6;
    --color-primary-dark: #1d4ed8;
    --color-accent: #7c3aed;
    --color-cta: #f97316;
    --color-bg: #f8faff;
    --color-surface: #ffffff;
    --color-text: #0f172a;
    --color-text-secondary: #475569;
    --color-text-muted: #94a3b8;
    --color-border: #e2e8f0;
    --color-success: #10b981;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.15);
    --font-sans: 'DM Sans', 'Noto Sans JP', 'Noto Sans TC', 'Noto Sans Thai', 'Noto Sans', sans-serif;
    --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Navbar --- */
.navbar {
    position: fixed;
    top: 12px;
    left: 12px;
    right: 12px;
    z-index: 100;
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(16px) saturate(1.6);
    -webkit-backdrop-filter: blur(16px) saturate(1.6);
    border: 1px solid rgba(226, 232, 240, 0.7);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-lg);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
    max-width: 1120px;
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--color-primary);
    text-decoration: none;
}

.logo-icon {
    width: 28px;
    height: 28px;
}

.nav-links {
    display: flex;
    gap: 28px;
}

.nav-links a {
    text-decoration: none;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition);
}

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

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Language Selector */
.lang-selector {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    padding: 6px 14px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.lang-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 6px;
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: var(--transition);
}

.lang-dropdown.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: block;
    width: 100%;
    text-align: left;
    background: transparent;
    border: none;
    padding: 8px 14px;
    font-size: 0.88rem;
    color: var(--color-text);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    font-family: var(--font-sans);
}

.lang-option:hover {
    background: var(--color-bg);
}

.lang-option.active {
    background: rgba(37, 99, 235, 0.08);
    color: var(--color-primary);
    font-weight: 600;
}

.nav-cta {
    display: inline-flex;
    padding: 8px 20px;
    background: var(--color-primary);
    color: #fff;
    text-decoration: none;
    border-radius: var(--radius-full);
    font-size: 0.88rem;
    font-weight: 600;
    transition: var(--transition);
}

.nav-cta:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

.mobile-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px;
    flex-direction: column;
    gap: 5px;
}

.mobile-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-full);
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    font-family: var(--font-sans);
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 2px 12px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(37, 99, 235, 0.4);
}

.btn-ghost {
    background: rgba(37, 99, 235, 0.08);
    color: var(--color-primary);
}

.btn-ghost:hover {
    background: rgba(37, 99, 235, 0.14);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary);
    color: #fff;
}

/* --- Hero --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: float 20s ease-in-out infinite;
}

.hero-orb-1 {
    width: 500px;
    height: 500px;
    background: rgba(37, 99, 235, 0.3);
    top: -100px;
    right: -100px;
}

.hero-orb-2 {
    width: 400px;
    height: 400px;
    background: rgba(124, 58, 237, 0.25);
    bottom: -50px;
    left: -100px;
    animation-delay: -7s;
}

.hero-orb-3 {
    width: 300px;
    height: 300px;
    background: rgba(14, 165, 233, 0.2);
    top: 50%;
    left: 50%;
    animation-delay: -14s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(30px, -20px) scale(1.05);
    }

    66% {
        transform: translate(-20px, 20px) scale(0.95);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    background: rgba(37, 99, 235, 0.1);
    color: var(--color-primary);
    padding: 6px 20px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.6rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 36px;
    max-width: 580px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(12px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 20px 40px;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-primary);
}

.stat-value small {
    font-size: 0.9rem;
}

.stat-label {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* --- Sections --- */
.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-label {
    display: inline-block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.4rem);
    font-weight: 800;
    line-height: 1.3;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    margin-top: 12px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* --- Features --- */
.features {
    padding: 100px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all var(--transition);
    cursor: default;
}

.feature-card:hover {
    border-color: rgba(37, 99, 235, 0.3);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.feature-card-large {
    grid-column: span 3;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 20px;
    align-items: center;
    background: linear-gradient(135deg, #eff6ff 0%, #f5f3ff 100%);
}

.feature-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(37, 99, 235, 0.08);
    border-radius: var(--radius-md);
    color: var(--color-primary);
    margin-bottom: 16px;
    flex-shrink: 0;
}

.feature-card-large .feature-icon {
    margin-bottom: 0;
    width: 64px;
    height: 64px;
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* --- How It Works --- */
.how-it-works {
    padding: 100px 0;
    background: var(--color-surface);
}

.steps-grid {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 12px;
}

.step-card {
    flex: 1;
    max-width: 300px;
    text-align: center;
    padding: 32px 24px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.step-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.step-number {
    font-size: 3rem;
    font-weight: 800;
    color: rgba(37, 99, 235, 0.12);
    line-height: 1;
}

.step-icon {
    width: 64px;
    height: 64px;
    margin: 12px auto 16px;
    background: rgba(37, 99, 235, 0.08);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.step-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.step-card p {
    font-size: 0.88rem;
    color: var(--color-text-secondary);
}

.step-connector {
    display: flex;
    align-items: center;
    padding-top: 80px;
    color: var(--color-text-muted);
}

/* --- Pricing --- */
.pricing {
    padding: 100px 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 780px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px;
    text-align: center;
    position: relative;
    transition: all var(--transition);
}

.pricing-card:hover {
    box-shadow: var(--shadow-md);
}

.pricing-card-featured {
    border: 2px solid var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: #fff;
    padding: 4px 20px;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
}

.pricing-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.pricing-price {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--color-text);
}

.pricing-price small {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

.pricing-period {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    margin-bottom: 24px;
}

.pricing-features {
    list-style: none;
    text-align: left;
    margin-bottom: 28px;
}

.pricing-features li {
    padding: 8px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    padding-left: 24px;
    position: relative;
}

.pricing-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 700;
}

/* --- Subscribe --- */
.subscribe {
    padding: 60px 0;
}

.subscribe-card {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    border-radius: var(--radius-xl);
    padding: 48px;
    color: #fff;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.subscribe-content h2 {
    font-size: 1.6rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.subscribe-content p {
    font-size: 0.95rem;
    color: #94a3b8;
    line-height: 1.7;
}

.input-group {
    display: flex;
    gap: 8px;
}

.input-group input {
    flex: 1;
    padding: 12px 20px;
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    font-size: 0.95rem;
    outline: none;
    font-family: var(--font-sans);
}

.input-group input::placeholder {
    color: #64748b;
}

.input-group input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.subscribe-note {
    font-size: 0.8rem;
    color: #64748b;
    margin-top: 8px;
}

.subscribe-success {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-success);
    margin-top: 12px;
    font-weight: 600;
}

/* --- Download --- */
.download {
    padding: 100px 0;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 700px;
    margin: 0 auto;
}

.download-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px;
    text-align: center;
    transition: all var(--transition);
}

.download-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.download-icon {
    margin-bottom: 16px;
    color: var(--color-text);
}

.download-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.download-desc {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    margin-bottom: 20px;
}

.download-btn {
    width: 100%;
    justify-content: center;
}

/* --- Footer --- */
.footer {
    padding: 60px 0 32px;
    background: #0f172a;
    color: #94a3b8;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.15rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 12px;
}

.footer-logo .logo-icon {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.footer-desc {
    font-size: 0.88rem;
    line-height: 1.7;
}

.footer-links h4 {
    color: #e2e8f0;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-links a {
    display: block;
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.88rem;
    padding: 4px 0;
    transition: color var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 24px;
    text-align: center;
    font-size: 0.82rem;
}

/* --- Contact Form --- */
.contact {
    padding: 100px 0;
    background: var(--color-surface);
}

.contact-card {
    max-width: 680px;
    margin: 0 auto;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.form-group input,
.form-group textarea {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    font-size: 0.95rem;
    outline: none;
    font-family: var(--font-sans);
    transition: border-color var(--transition);
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.contact-submit-btn {
    align-self: flex-start;
}

.contact-success {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-success);
    font-weight: 600;
    font-size: 1rem;
    padding: 16px 0;
}

.contact-error {
    color: #ef4444;
    font-size: 0.9rem;
    font-weight: 500;
}

/* --- Responsive --- */
@media (max-width: 768px) {

    .nav-links,
    .nav-cta {
        display: none;
    }

    .mobile-toggle {
        display: flex;
    }

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

    .feature-card-large {
        grid-column: span 1;
        grid-template-columns: 1fr;
    }

    .steps-grid {
        flex-direction: column;
        align-items: center;
    }

    .step-connector {
        display: none;
    }

    .pricing-grid,
    .download-grid {
        grid-template-columns: 1fr;
    }

    .subscribe-card {
        grid-template-columns: 1fr;
        padding: 32px 24px;
    }

    .input-group {
        flex-direction: column;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 16px;
        padding: 20px 24px;
    }

    .stat-divider {
        width: 60px;
        height: 1px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

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

    .contact-card {
        padding: 24px;
    }
}