@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ========== CSS VARIABLES ========== */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-glass: rgba(255, 255, 255, 0.05);
    --border-glass: rgba(255, 255, 255, 0.08);
    --text-primary: #f0f0f5;
    --text-secondary: #8a8a9a;
    --text-muted: #5a5a6a;
    --accent-purple: #8b5cf6;
    --accent-blue: #3b82f6;
    --accent-cyan: #06b6d4;
    --accent-pink: #ec4899;
    --gradient-primary: linear-gradient(135deg, #8b5cf6, #3b82f6);
    --gradient-hero: linear-gradient(135deg, #8b5cf6 0%, #3b82f6 50%, #06b6d4 100%);
    --gradient-card: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(59, 130, 246, 0.05));
    --shadow-glow: 0 0 40px rgba(139, 92, 246, 0.15);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* ========== ANIMATED BACKGROUND ========== */
.bg-grid {
    position: fixed;
    inset: 0;
    z-index: 0;
    background-image:
        linear-gradient(rgba(139, 92, 246, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(139, 92, 246, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

.bg-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(150px);
    opacity: 0.15;
    pointer-events: none;
    z-index: 0;
}

.bg-glow--purple {
    background: var(--accent-purple);
    top: -200px;
    left: -100px;
    animation: float-glow 15s ease-in-out infinite alternate;
}

.bg-glow--blue {
    background: var(--accent-blue);
    bottom: -200px;
    right: -100px;
    animation: float-glow 18s ease-in-out infinite alternate-reverse;
}

@keyframes float-glow {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(50px, 30px) scale(1.1); }
    100% { transform: translate(-30px, 50px) scale(0.9); }
}

/* ========== NAVBAR ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(10, 10, 15, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
    transition: all 0.3s ease;
}

.navbar__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.navbar__logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 900;
    color: white;
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
}

.navbar__links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.navbar__links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.3s ease;
    position: relative;
}

.navbar__links a:hover {
    color: var(--text-primary);
}

.navbar__links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.navbar__links a:hover::after {
    width: 100%;
}

.navbar__cta {
    padding: 10px 24px;
    border-radius: 12px;
    background: var(--gradient-primary);
    color: white;
    font-size: 0.85rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.3s ease;
}

.navbar__cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.3);
}

/* ========== HERO SECTION ========== */
.hero {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 40px 80px;
    text-align: center;
}

.hero__content {
    max-width: 800px;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    border-radius: 100px;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-purple);
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease;
}

.hero__badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #22c55e;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.5); }
}

.hero__title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -2px;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.1s backwards;
}

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

.hero__subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 48px;
    line-height: 1.7;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero__buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.3s backwards;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn--primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.3);
}

.btn--primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(139, 92, 246, 0.4);
}

.btn--secondary {
    background: var(--bg-glass);
    color: var(--text-primary);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(10px);
}

.btn--secondary:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
}

.btn__icon {
    font-size: 1.3rem;
}

.hero__notice {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    max-width: 600px;
    margin: 32px auto 0;
    padding: 18px 24px;
    border-radius: var(--radius-md);
    background: rgba(251, 191, 36, 0.08);
    border: 1px solid rgba(251, 191, 36, 0.2);
    text-align: left;
    animation: fadeInUp 0.8s ease 0.4s backwards;
    box-shadow: 0 0 30px rgba(251, 191, 36, 0.05);
}

.hero__notice-icon {
    font-size: 1.4rem;
    min-width: 28px;
    margin-top: 2px;
}

.hero__notice-text {
    font-size: 0.9rem;
    color: rgba(251, 191, 36, 0.9);
    line-height: 1.7;
}

.hero__notice-text strong {
    color: #fbbf24;
}

.hero__notice-link {
    color: #fbbf24;
    text-decoration: underline;
    text-underline-offset: 3px;
    font-weight: 600;
    transition: color 0.2s ease;
}

.hero__notice-link:hover {
    color: #fde68a;
}

.hero__image {
    margin-top: 64px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-glow), var(--shadow-card);
    border: 1px solid var(--border-glass);
    animation: fadeInUp 1s ease 0.5s backwards;
}

.hero__image img {
    display: block;
    width: 100%;
}

.hero__stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-top: 48px;
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

.hero__stat {
    text-align: center;
}

.hero__stat-value {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
    font-weight: 500;
}

/* ========== SECTION COMMONS ========== */
.section {
    position: relative;
    z-index: 1;
    padding: 100px 40px;
}

.section__header {
    text-align: center;
    margin-bottom: 64px;
}

.section__label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--accent-purple);
    margin-bottom: 16px;
}

.section__title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 16px;
}

.section__desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ========== FEATURES SECTION ========== */
.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    max-width: 1100px;
    margin: 0 auto;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.feature-card:hover {
    transform: translateY(-6px);
    border-color: rgba(139, 92, 246, 0.2);
    box-shadow: var(--shadow-glow);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card__image {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    object-fit: cover;
}

.feature-card__title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-card__desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========== SETUP GUIDE SECTION ========== */
.setup__container {
    max-width: 900px;
    margin: 0 auto;
}

.setup__steps {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.setup-step {
    display: flex;
    gap: 24px;
    align-items: flex-start;
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
}

.setup-step:hover {
    border-color: rgba(139, 92, 246, 0.2);
    transform: translateX(6px);
}

.setup-step__number {
    width: 48px;
    height: 48px;
    min-width: 48px;
    border-radius: 14px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 800;
    color: white;
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.2);
}

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

.setup-step__content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========== DOWNLOAD SECTION ========== */
.download {
    text-align: center;
    padding: 100px 40px 120px;
}

.download__box {
    max-width: 700px;
    margin: 0 auto;
    padding: 56px 48px;
    border-radius: var(--radius-xl);
    background: var(--gradient-card);
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-glow);
    position: relative;
    overflow: hidden;
}

.download__box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, rgba(139, 92, 246, 0.05), transparent, rgba(59, 130, 246, 0.05), transparent);
    animation: rotate-bg 20s linear infinite;
}

@keyframes rotate-bg {
    100% { transform: rotate(360deg); }
}

.download__box-content {
    position: relative;
    z-index: 1;
}

.download__title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.download__desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
}

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

/* ========== FOOTER ========== */
.footer {
    position: relative;
    z-index: 1;
    padding: 40px;
    border-top: 1px solid var(--border-glass);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer__heart {
    color: var(--accent-pink);
}

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

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .navbar {
        padding: 14px 20px;
    }

    .navbar__links {
        display: none;
    }

    .hero {
        padding: 100px 20px 60px;
    }

    .hero__stats {
        gap: 24px;
    }

    .hero__stat-value {
        font-size: 1.4rem;
    }

    .section {
        padding: 60px 20px;
    }

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

    .setup-step {
        flex-direction: column;
        gap: 16px;
    }

    .download__box {
        padding: 36px 24px;
    }

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

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

@media (max-width: 480px) {
    .hero__title {
        letter-spacing: -1px;
    }

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