:root {
    --brand-blue: #2fa4e7;
    --brand-blue-glow: rgba(47, 164, 231, 0.5);
    --bg-color: #f8fafc;
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --card-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
}

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

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

/* Aurora Background */
.aurora-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: var(--bg-color);
    overflow: hidden;
}

.orb {
    position: absolute;
    filter: blur(100px);
    border-radius: 50%;
    opacity: 0.2;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--brand-blue);
    top: -200px;
    left: -200px;
    animation: drift 20s infinite alternate;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: #06b6d4;
    bottom: -100px;
    right: -100px;
    animation: drift 25s infinite alternate-reverse;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: #6366f1;
    top: 20%;
    right: 10%;
    opacity: 0.1;
}

@keyframes drift {
    from {
        transform: translate(0, 0) scale(1);
    }
    to {
        transform: translate(50px, 100px) scale(1.1);
    }
}

/* Glassmorphism Classes */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--card-shadow);
}

.glass-dark {
    background: rgba(17, 24, 39, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Typography */
h1, h2, h3 {
    font-weight: 800;
    letter-spacing: -0.025em;
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(135deg, var(--brand-blue), #06b6d4, #6366f1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 5rem 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--brand-blue);
    color: white;
    box-shadow: 0 4px 14px 0 var(--brand-blue-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(47, 164, 231, 0.4);
}

.btn-outline {
    border: 2px solid var(--brand-blue);
    color: var(--brand-blue);
}

.btn-outline:hover {
    background: rgba(47, 164, 231, 0.05);
}

/* Nav */
nav {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 1.5rem 0;
    transition: all 0.3s ease;
}

nav.scrolled {
    padding: 1rem 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
}

.logo img {
    height: 48px;
    width: auto;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.2s;
}

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

.app-store-btn {
    display: inline-block;
}

.app-store-btn img {
    height: 40px;
    width: auto;
    display: block;
    transition: transform 0.2s;
}

.app-store-btn:hover img {
    transform: scale(1.05);
}

/* Specific Sizes */
.nav-links .app-store-btn img {
    height: 40px;
}

.hero .app-store-btn img {
    height: 56px;
}

.cta .app-store-btn img {
    height: 64px;
    margin: 0 auto;
}

.footer-col .app-store-btn img {
    height: 40px;
    background: transparent;
    margin-top: 1rem;
}

/* Footer */
footer {
    background: #0f172a;
    color: white;
    padding: 5rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-social-col {
    display: none;
}

.footer-col h4 {
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #94a3b8;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 0.75rem;
}

.footer-col ul a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.2s;
}

.footer-col ul a:hover {
    color: var(--brand-blue);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    color: #94a3b8;
    font-size: 0.875rem;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .section {
        padding: 3rem 0;
    }
    h1 {
        font-size: 2.5rem;
    }
}

/* Accordion */
.accordion {
    max-width: 800px;
    margin: 0 auto;
}

.accordion-item {
    margin-bottom: 1rem;
    border-radius: 16px;
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--glass-bg);
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.accordion-header:hover {
    background: rgba(255, 255, 255, 0.9);
}

.accordion-header i {
    transition: transform 0.3s ease;
    color: var(--brand-blue);
}

.accordion-header.active i {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    background: rgba(255, 255, 255, 0.4);
}

.accordion-content-inner {
    padding: 0 2rem 1.5rem;
    color: var(--text-secondary);
}

/* Device Presentation */
.device-bezel {
    border: 12px solid #1e293b;
    border-radius: 2.5rem;
    box-shadow: 0 30px 60px rgba(0,0,0,0.15);
    width: 100%;
    height: auto;
    display: block;
    background: #1e293b; /* Fallback and background for transparent images */
}

/* Feature Image Container */
.feature-image-container {
    max-width: 320px;
    margin: 0 auto;
}