/* Modern CSS Design System */
:root {
    --primary: #9E77ED;
    --primary-dark: #7F56D9;
    --accent: #FFB300;
    --success: #22C55E;
    --info: #3B82F6;
    --danger: #F04438;
    
    /* Light Theme (Default) */
    --bg-page: #F9FAFB;
    --bg-card: #FFFFFF;
    --bg-navbar: rgba(255, 255, 255, 0.95);
    --text-main: #1D2939;
    --text-muted: #667085;
    --card-border: #EAECF0;
    
    --gradient-purple: linear-gradient(135deg, #9E77ED, #7F56D9);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --bg-page: #0F172A;
    --bg-card: #1E293B;
    --bg-navbar: rgba(15, 23, 42, 0.95);
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
    --card-border: #334155;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { 
    font-family: 'Inter', sans-serif; 
    background-color: var(--bg-page); 
    color: var(--text-main); 
    line-height: 1.7; 
    overflow-x: hidden; 
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
h1, h2, h3, h4, .logo-text { 
    font-family: 'Outfit', sans-serif; 
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.25;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

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

/* Navbar */
#navbar {
    height: 80px;
    display: flex;
    align-items: center;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: var(--bg-navbar);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--card-border);
}

#navbar .container { display: flex; justify-content: space-between; align-items: center; width: 100%; }
.logo { display: flex; align-items: center; gap: 12px; }
.nav-logo { height: 45px; width: auto; border-radius: 10px; }
.logo-text { font-size: 20px; font-weight: 900; line-height: 1; display: flex; flex-direction: column; color: var(--text-main); }
.logo-text .purple { color: var(--primary); }
.logo-text .amber { color: var(--accent); }

.purple { color: var(--primary) !important; }
.amber { color: var(--accent) !important; }
.nav-links { display: flex; list-style: none; align-items: center; gap: 30px; }
.nav-links a { text-decoration: none; color: var(--text-main); font-weight: 600; transition: var(--transition); }
.nav-links a:hover { color: var(--primary); }
.nav-links a.active { color: var(--accent) !important; font-weight: 700; }
.btn-primary { background: var(--primary); padding: 12px 24px !important; border-radius: 12px; color: white !important; }

/* Hero Section */
#hero {
    padding-top: 150px;
    padding-bottom: 80px;
    background: radial-gradient(circle at top right, rgba(158, 119, 237, 0.1), transparent);
    overflow: hidden;
}

.hero-content { display: grid; grid-template-columns: 1.2fr 0.8fr; align-items: center; gap: 50px; }
.hero-text h1 { font-size: 64px; font-weight: 900; line-height: 1.1; margin-bottom: 25px; color: var(--dark); }
.hero-text p { font-size: 18px; color: var(--text-muted); max-width: 550px; margin-bottom: 40px; }

.btn-main {
    text-decoration: none;
    background: var(--primary);
    color: white;
    padding: 18px 32px;
    border-radius: 20px;
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 10px 20px rgba(158, 119, 237, 0.25);
    transition: var(--transition);
}

.btn-main:hover { transform: translateY(-5px); box-shadow: 0 15px 30px rgba(158, 119, 237, 0.35); }

/* App UI Cards Style */
#features { padding: 100px 0; }
.section-title { font-size: 42px; font-weight: 900; text-align: center; margin-bottom: 60px; color: var(--dark); }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }

.app-card {
    background: var(--bg-card);
    padding: 30px;
    border-radius: 25px;
    border: 2px solid var(--card-border);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: var(--transition);
}

.app-card:hover { border-color: var(--primary); transform: scale(1.02); }

.app-card-icon {
    width: 70px;
    height: 70px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
}

.icon-gk { background: #E8F5E9; color: var(--success); }
.icon-science { background: #FFF8E1; color: var(--accent); }
.icon-math { background: #EEF2FF; color: var(--primary); }
.icon-slot { background: #FFF7ED; color: #F97316; }
.icon-ttt { background: #F0FDF4; color: #16A34A; }
.icon-play { background: #F5F3FF; color: #8B5CF6; }
.icon-scratch { background: #FFF1F2; color: #E11D48; }
.icon-captcha { background: #F0F9FF; color: #0284C7; }
/* Icon Animations */
@keyframes icon-rotate { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes icon-pulse { 0% { transform: scale(1); } 50% { transform: scale(1.1); } 100% { transform: scale(1); } }
@keyframes icon-bounce { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }
@keyframes icon-shake { 0%, 100% { transform: rotate(0); } 25% { transform: rotate(-10deg); } 75% { transform: rotate(10deg); } }

.icon-play i { animation: icon-rotate 4s linear infinite; }
.icon-math i, .icon-gk i, .icon-science i { animation: icon-bounce 2s ease-in-out infinite; }
.icon-slot i { animation: icon-pulse 1.5s ease-in-out infinite; }
.icon-scratch i { animation: icon-shake 2s ease-in-out infinite; }
.icon-more i { animation: icon-pulse 1s ease-in-out infinite; }

/* Individual Card Colors */
.card-gk { background: #F0FAF0 !important; border-color: #C2E7C2 !important; }
.card-math { background: #F5F7FF !important; border-color: #D1D9FF !important; }
.card-slot { background: #FFF9F2 !important; border-color: #FFE5CC !important; }
.card-ttt { background: #F2FDF5 !important; border-color: #D1F8DD !important; }
.card-spin { background: #F8F6FF !important; border-color: #E2DBFF !important; }
.card-scratch { background: #FFF4F5 !important; border-color: #FFD1D5 !important; }
.card-more { background: #F1F5F9 !important; border-style: dashed !important; border-color: #CBD5E1 !important; }

/* Dark mode overrides for cards */
[data-theme="dark"] .app-card { background: var(--bg-card) !important; border-color: var(--card-border) !important; }

.app-card-info h3 { font-size: 20px; font-weight: 800; margin-bottom: 5px; }
.app-card-info p { color: var(--text-muted); font-size: 14px; }
.reward-tag { margin-top: 10px; display: inline-flex; align-items: center; font-weight: 700; color: var(--accent); font-size: 13px; }

/* How It Works - Numbered Steps */
#how-it-works { padding: 100px 0; background-color: var(--bg-page); }
.steps-container { max-width: 800px; margin: 0 auto; }
.step-item { display: flex; gap: 30px; margin-bottom: 50px; align-items: flex-start; }
.step-circle {
    min-width: 50px;
    height: 50px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 20px;
}
.step-content h4 { font-size: 22px; font-weight: 800; margin-bottom: 10px; }
.step-content p { color: var(--text-muted); }

/* Footer */
footer { padding: 80px 0 40px; background: var(--dark); color: white; }
.footer-top { display: flex; justify-content: space-between; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.logo-text.white { color: white; }
.socials a { color: rgba(255,255,255,0.6); font-size: 20px; transition: var(--transition); }
.socials a:hover { color: var(--primary); }

/* Animations */
.reveal-hidden { opacity: 0; transform: translateY(30px); transition: all 0.8s ease-out; }
.reveal-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1024px) {
    .hero-content { grid-template-columns: 1fr; text-align: center; }
    .hero-text h1 { font-size: 48px; }
    .btn-main { width: 100%; justify-content: center; }
}

/* Viewport Simulator Styles */
#main-viewport {
    transition: var(--transition);
    margin: 0 auto;
    width: 100%;
}

/* Background when in simulator mode */
body.view-mobile, body.view-tablet {
    background-color: var(--dark);
    padding: 40px 0;
    height: 100vh;
    overflow: hidden;
}

/* Mobile Frame */
.view-mobile #main-viewport {
    max-width: 375px;
    height: 750px;
    background: var(--bg-page);
    border: 12px solid #000;
    border-radius: 45px;
    position: relative;
    box-shadow: 0 50px 100px rgba(0,0,0,0.8);
    overflow-y: auto;
    overflow-x: hidden;
}

/* Mobile Notch */
.view-mobile #main-viewport::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 25px;
    background: #000;
    border-bottom-left-radius: 15px;
    border-bottom-right-radius: 15px;
    z-index: 2000;
}

/* Tablet Frame */
.view-tablet #main-viewport {
    max-width: 768px;
    height: 900px;
    background: var(--bg-page);
    border: 15px solid #000;
    border-radius: 30px;
    position: relative;
    box-shadow: 0 50px 100px rgba(0,0,0,0.8);
    overflow-y: auto;
    overflow-x: hidden;
}

/* Navbar inside simulator fix */
.view-mobile #navbar, .view-tablet #navbar {
    position: sticky;
    top: 0;
    width: 100%;
}

.view-mobile #navbar .btn-primary, .view-tablet #navbar .btn-primary {
    display: none; /* Hide download button in small simulator for space */
}

/* Scrollbar styling for simulator */
#main-viewport::-webkit-scrollbar { width: 4px; }
#main-viewport::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 10px; }

/* Simulator Controls Styling in Navbar */
.nav-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.nav-btn {
    background: transparent;
    border: none;
    color: var(--text-main);
    font-size: 18px;
    cursor: pointer;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.nav-btn:hover {
    background: rgba(158, 119, 237, 0.1);
    color: var(--primary);
}

.view-mobile .nav-btn, .view-tablet .nav-btn {
    font-size: 16px;
    width: 32px;
    height: 32px;
}

.desktop-only {
    display: inline-block;
}

.view-mobile .desktop-only, .view-tablet .desktop-only {
    display: none;
}

/* Font scaling for Simulator Views */
.view-mobile #hero { padding-top: 80px !important; padding-bottom: 40px !important; }
.view-mobile .hero-content { display: flex; flex-direction: column; gap: 20px; text-align: center; }
.view-mobile .hero-text h1 { font-size: 28px !important; margin-bottom: 15px; }
.view-mobile .hero-text p { font-size: 13px !important; margin: 0 auto 20px; max-width: 100%; }
.view-mobile .hero-image img { max-width: 150px !important; }
.view-mobile .cta-group { justify-content: center; }
.view-mobile .btn-main { padding: 14px 24px; font-size: 14px; }

.view-mobile .section-title { font-size: 24px !important; margin-bottom: 30px; }
.view-mobile .app-card h3 { font-size: 16px !important; }
.view-mobile .features-grid { gap: 15px; }

.view-tablet .hero-content { gap: 30px; }
.view-tablet .hero-text h1 { font-size: 38px !important; }
.view-tablet .section-title { font-size: 30px !important; }

/* Mobile Top Bar UI compacting */
.view-mobile #navbar, .view-tablet #navbar {
    height: 60px !important;
}

.mobile-only { display: none; }
.view-mobile .mobile-only, .view-tablet .mobile-only { display: flex; }

.view-mobile .nav-links, .view-tablet .nav-links {
    display: flex;
    position: absolute;
    top: 60px;
    left: 0;
    width: 100%;
    flex-direction: column;
    background: var(--bg-navbar);
    backdrop-filter: blur(20px);
    padding: 20px;
    gap: 15px;
    border-bottom: 1px solid var(--card-border);
    transform: translateY(-150%);
    transition: var(--transition);
    z-index: 1000;
}

.view-mobile .nav-links.active, .view-tablet .nav-links.active {
    transform: translateY(0);
}

.view-mobile .nav-links li, .view-tablet .nav-links li {
    display: block;
    width: 100%;
    padding: 10px 0;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.view-mobile .nav-logo, .view-tablet .nav-logo {
    height: 35px;
}

/* Bottom Nav Styling */
.mobile-bottom-nav {
    display: none; /* Hide on regular desktop */
    position: sticky;
    bottom: 0;
    width: 100%;
    height: 65px;
    background: var(--bg-navbar);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--card-border);
    justify-content: space-around;
    align-items: center;
    z-index: 2000;
}

.view-mobile .mobile-bottom-nav, .view-tablet .mobile-bottom-nav {
    display: flex;
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
}

.bottom-nav-item.active {
    color: var(--primary);
}

.bottom-nav-item i {
    font-size: 18px;
}