/* Base Tokens & Reset */
:root {
    --bg-base: #0B0F19;
    --bg-surface: rgba(30, 41, 59, 0.4);
    --bg-panel: rgba(15, 23, 42, 0.7);
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    --accent-primary: #3B82F6;
    --accent-hover: #2563EB;
    --accent-gradient: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
    --border-color: rgba(255, 255, 255, 0.08);
    --glass-blur: blur(12px);
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
}

/* Dynamic Background Blobs */
.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
    opacity: 0.4;
    animation: float 20s ease-in-out infinite alternate;
}
.blob-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: #3B82F6;
}
.blob-2 {
    top: 40%;
    right: -10%;
    width: 40vw;
    height: 40vw;
    background: #8B5CF6;
    animation-delay: -5s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(5%, 10%) scale(1.1); }
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

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

/* Buttons */
.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    gap: 0.5rem;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.5);
}

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    max-width: 1400px;
    margin: 0 auto;
    right: 0;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.mountain-icon {
    width: 32px;
    height: 32px;
}

.logo-text {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a:not(.btn-primary) {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

.nav-links a:not(.btn-primary):hover {
    color: var(--text-primary);
}

/* Hero Section */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    padding: 8rem 5% 5rem;
    max-width: 1400px;
    margin: 0 auto;
    align-items: center;
    min-height: 100vh;
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 9999px;
    color: var(--accent-primary);
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 4.5rem;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: 1rem;
}

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

.phone-mockup {
    width: 320px;
    height: 650px;
    background: #020617;
    border-radius: 40px;
    border: 8px solid #1E293B;
    position: relative;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5), 0 0 100px rgba(59, 130, 246, 0.2);
    overflow: hidden;
    transform: rotate(2deg);
    transition: transform 0.5s ease;
}

.phone-mockup:hover {
    transform: rotate(0deg) translateY(-10px);
}

.phone-notch {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 25px;
    background: #1E293B;
    border-bottom-left-radius: 12px;
    border-bottom-right-radius: 12px;
    z-index: 10;
}

.phone-screen-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-greeting {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.mountain-icon-small {
    width: 24px;
    height: 24px;
}

.app-section-title {
    font-weight: 600;
    font-size: 1.2rem;
    margin-top: 10px;
    display: flex;
    flex-direction: column;
}

.app-section-title span {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.habit-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.02);
}

.habit-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.2rem;
}

.habit-details {
    flex: 1;
}

.habit-name {
    font-size: 0.95rem;
    font-weight: 600;
}

.habit-streak {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.habit-circle {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--text-secondary);
    opacity: 0.5;
}

.habit-card.completed {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
}

.habit-card.completed .habit-icon {
    background: rgba(59, 130, 246, 0.2);
}

.habit-check {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--accent-gradient);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.8rem;
    font-weight: bold;
}

.app-bottom-nav {
    margin-top: auto;
    display: flex;
    justify-content: space-around;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-item {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.2);
}

.nav-item.active {
    background: var(--accent-primary);
}


/* Features Section */
.features {
    padding: 8rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-header h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: 24px;
    backdrop-filter: var(--glass-blur);
    transition: transform 0.3s ease, background 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    background: rgba(40, 50, 70, 0.6);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-secondary);
}

/* Download Section */
.download-section {
    padding: 5rem 5% 8rem;
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

.glass-panel {
    background: var(--bg-panel);
    border: 1px solid rgba(59, 130, 246, 0.3);
    padding: 5rem 2rem;
    border-radius: 32px;
    backdrop-filter: var(--glass-blur);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    position: relative;
    overflow: hidden;
}

.glass-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.glass-panel h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.glass-panel p {
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* Footer */
footer {
    border-top: 1px solid var(--border-color);
    padding: 5rem 5% 2rem;
    background: linear-gradient(to bottom, transparent, #020617);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 1rem;
    max-width: 250px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.link-column h4 {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.link-column a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 0.8rem;
    transition: color 0.2s ease;
}

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

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
    color: var(--text-secondary);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 2rem;
    font-size: 0.9rem;
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 900px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: 10rem;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-cta {
        justify-content: center;
    }

    .hero-title {
        font-size: 3.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .footer-links {
        grid-template-columns: 1fr 1fr;
    }
}