/* ===== RESET & BASE ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --green: #4CAF50;
    --green-dark: #388E3C;
    --green-light: #E8F5E9;
    --yellow: #FFD54F;
    --yellow-light: #FFF9E6;
    --orange: #FF9800;
    --purple: #9B8FFF;
    --blue: #5BC0EB;
    --pink: #FF6B9D;
    --bg: #FAFBFC;
    --text: #1A1A2E;
    --text-muted: #6B7280;
    --white: #FFFFFF;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --shadow: 0 4px 24px rgba(0,0,0,0.06);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.1);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
    font-family: 'Nunito', sans-serif;
    font-weight: 800;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-family: 'Nunito', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.btn-primary {
    background: var(--green);
    color: white;
    box-shadow: 0 4px 16px rgba(76, 175, 80, 0.3);
}
.btn-primary:hover {
    background: var(--green-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(76, 175, 80, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--text);
    border: 2px solid rgba(0,0,0,0.15);
}
.btn-outline:hover {
    border-color: var(--green);
    color: var(--green);
}

.btn-nav {
    background: var(--green);
    color: white;
    padding: 8px 20px;
    font-size: 0.9rem;
}
.btn-nav:hover {
    background: var(--green-dark);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.1rem;
}

/* ===== NAVIGATION ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    transition: var(--transition);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: 'Nunito', sans-serif;
    font-weight: 900;
    font-size: 1.5rem;
}

.logo-icon {
    font-size: 1.8rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
}
.nav-links a:hover {
    color: var(--green);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.hamburger span {
    width: 24px;
    height: 2.5px;
    background: var(--text);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
    position: relative;
    padding: 140px 0 100px;
    background: linear-gradient(135deg, #E8F5E9 0%, #FFF9E6 50%, #F3E5F5 100%);
    overflow: hidden;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(76, 175, 80, 0.1);
    color: var(--green-dark);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    color: var(--text);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 32px;
    max-width: 520px;
    line-height: 1.7;
}

.hero-ctas {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.hero-trust {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.trust-icon {
    font-size: 1.1rem;
}

/* Phone Mockup */
.hero-visual {
    display: flex;
    justify-content: center;
}

.phone-mockup {
    width: 300px;
    height: 600px;
    background: #1A1A2E;
    border-radius: 40px;
    padding: 12px;
    box-shadow: var(--shadow-lg), 0 0 0 2px rgba(0,0,0,0.1);
    position: relative;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, #1a1a3e 0%, #0f0f2e 100%);
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.orb-demo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.orb {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: radial-gradient(circle at 40% 35%, #7ED957, #4CAF50, #2E7D32);
    position: relative;
    animation: orbFloat 3s ease-in-out infinite;
    box-shadow: 0 0 60px rgba(76, 175, 80, 0.4), 0 0 120px rgba(76, 175, 80, 0.2);
}

.orb-glow {
    position: absolute;
    inset: -20px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(76,175,80,0.3) 0%, transparent 70%);
    animation: orbPulse 2s ease-in-out infinite;
}

.orb-face {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding-bottom: 10px;
}

.orb-eye {
    width: 14px;
    height: 14px;
    background: white;
    border-radius: 50%;
    position: relative;
    animation: orbBlink 4s ease-in-out infinite;
}
.orb-eye::after {
    content: '';
    position: absolute;
    width: 6px;
    height: 6px;
    background: #1a1a2e;
    border-radius: 50%;
    top: 4px;
    left: 4px;
}

.orb-mouth {
    position: absolute;
    bottom: 35px;
    width: 20px;
    height: 10px;
    border-bottom: 3px solid white;
    border-radius: 0 0 50% 50%;
}

.speech-bubble {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    padding: 12px 20px;
    border-radius: 20px;
    color: rgba(255,255,255,0.9);
    font-size: 0.9rem;
    font-family: 'Nunito', sans-serif;
    min-height: 42px;
    min-width: 180px;
    text-align: center;
}

.hero-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
}
.hero-wave svg {
    display: block;
    width: 100%;
    height: 80px;
}

@keyframes orbFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

@keyframes orbPulse {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.1); }
}

@keyframes orbBlink {
    0%, 45%, 55%, 100% { transform: scaleY(1); }
    50% { transform: scaleY(0.1); }
}

/* ===== SECTIONS SHARED ===== */
.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-muted);
}

/* ===== FEATURES ===== */
.features {
    padding: 100px 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    padding: 36px 28px;
    border-radius: var(--radius);
    background: var(--bg);
    border: 1px solid rgba(0,0,0,0.04);
    transition: var(--transition);
}
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ===== HOW IT WORKS ===== */
.how-it-works {
    padding: 100px 0;
    background: var(--green-light);
}

.steps {
    display: flex;
    gap: 40px;
    margin-bottom: 60px;
}

.step {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.step-number {
    width: 56px;
    height: 56px;
    background: var(--green);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Nunito', sans-serif;
    font-weight: 900;
    font-size: 1.5rem;
    margin-bottom: 20px;
    box-shadow: 0 4px 16px rgba(76, 175, 80, 0.3);
}

.step-content h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

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

.parent-callout {
    display: flex;
    align-items: center;
    gap: 24px;
    background: white;
    padding: 32px 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.callout-icon {
    font-size: 3rem;
    flex-shrink: 0;
}

.callout-content h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.callout-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ===== SAFETY ===== */
.safety {
    padding: 100px 0;
    background: white;
}

.safety-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.safety-item {
    text-align: center;
    padding: 32px 24px;
}

.safety-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.safety-item h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.safety-item p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ===== VOICES ===== */
.voices {
    padding: 100px 0;
    background: linear-gradient(135deg, #FFF9E6 0%, #F3E5F5 50%, #E8F5E9 100%);
}

.voices-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.voice-card {
    background: white;
    padding: 36px 24px;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-top: 4px solid var(--accent);
}
.voice-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.voice-avatar {
    font-size: 3rem;
    margin-bottom: 16px;
}

.voice-card h3 {
    font-size: 1.3rem;
    margin-bottom: 6px;
}

.voice-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ===== FAQ ===== */
.faq {
    padding: 100px 0;
    background: white;
}

.faq-list {
    max-width: 720px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid rgba(0,0,0,0.08);
}

.faq-item summary {
    padding: 20px 0;
    font-family: 'Nunito', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item summary::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--green);
    transition: var(--transition);
}

.faq-item[open] summary::after {
    content: '−';
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item p {
    padding: 0 0 20px;
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== DOWNLOAD CTA ===== */
.download {
    padding: 100px 0;
    background: linear-gradient(135deg, #4CAF50 0%, #2E7D32 100%);
    text-align: center;
    color: white;
}

.download-content h2 {
    font-size: 2.8rem;
    margin-bottom: 16px;
}

.download-content > p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 40px;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 20px;
}

.store-badge {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 14px 28px;
    background: rgba(0,0,0,0.2);
    border-radius: var(--radius-sm);
    color: white;
    transition: var(--transition);
}
.store-badge:hover {
    background: rgba(0,0,0,0.35);
    transform: translateY(-2px);
}
.store-badge small {
    display: block;
    font-size: 0.7rem;
    opacity: 0.8;
    text-align: left;
}
.store-badge strong {
    display: block;
    font-size: 1.1rem;
    font-family: 'Nunito', sans-serif;
}

.download-note {
    font-size: 0.85rem;
    opacity: 0.7;
}

/* ===== FOOTER ===== */
.footer {
    padding: 60px 0 32px;
    background: #1A1A2E;
    color: rgba(255,255,255,0.7);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 12px;
}
.footer-brand .logo-text {
    color: white;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-links h4 {
    color: white;
    font-size: 0.95rem;
    margin-bottom: 16px;
}

.footer-links a {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 10px;
    color: rgba(255,255,255,0.6);
}
.footer-links a:hover {
    color: var(--green);
}

.footer-address {
    font-size: 0.85rem;
    line-height: 1.6;
    margin-top: 8px;
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    font-size: 0.85rem;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .hero h1 { font-size: 2.8rem; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .safety-grid { grid-template-columns: repeat(2, 1fr); }
    .voices-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 24px;
        gap: 20px;
        box-shadow: var(--shadow-lg);
        border-top: 1px solid rgba(0,0,0,0.05);
    }
    .nav-links.active { display: flex; }

    .hamburger { display: flex; }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero h1 { font-size: 2.2rem; }
    .hero-subtitle { margin: 0 auto 32px; }
    .hero-ctas { justify-content: center; }
    .hero-trust { justify-content: center; }

    .phone-mockup {
        width: 240px;
        height: 480px;
    }

    .orb {
        width: 90px;
        height: 90px;
    }

    .steps {
        flex-direction: column;
        gap: 32px;
    }

    .parent-callout {
        flex-direction: column;
        text-align: center;
        padding: 28px 24px;
    }

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

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

    .section-header h2 { font-size: 2rem; }

    .download-content h2 { font-size: 2rem; }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.8rem; }
    .btn-lg { padding: 14px 28px; font-size: 1rem; }
    .voices-grid { grid-template-columns: 1fr; }
}