:root {
    --bg-dark: #050505;
    --surface-bg: rgba(255, 255, 255, 0.03);
    --surface-border: rgba(255, 255, 255, 0.08);
    --surface-hover: rgba(255, 255, 255, 0.06);

    --accent-primary: #3b82f6;
    --accent-secondary: #8b5cf6;
    --accent-glow: rgba(59, 130, 246, 0.4);

    --text-primary: #ffffff;
    --text-secondary: #a3a3a3;

    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Outfit', sans-serif;

    --container-width: 1200px;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Background Glow Effect */
.background-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background:
        radial-gradient(circle at 15% 15%, rgba(59, 130, 246, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 85% 85%, rgba(139, 92, 246, 0.08) 0%, transparent 40%);
    pointer-events: none;
    z-index: -1;
}

/* Typography */
h1,
h2,
h3 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
}

h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    line-height: 1.7;
}

a {
    color: inherit;
    text-decoration: none;
    transition: 0.3s;
}

.text-gradient {
    background: linear-gradient(135deg, #fff 0%, #9ca3af 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subheadline {
    font-size: 1.25rem;
    max-width: 600px;
    margin-bottom: 3rem;
    color: #94a3b8;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
.header {
    padding: 2rem 0;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 10;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    font-size: 1rem;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 6rem;
    position: relative;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text {
    z-index: 2;
}

/* Buttons */
.cta-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 99px;
    font-weight: 600;
    font-size: 1rem;
    border: 1px solid transparent;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary {
    background: var(--surface-bg);
    border-color: var(--surface-border);
    color: #666;
    cursor: default;
}

.btn-primary:active {
    transform: none;
}

.btn-secondary {
    background: #ffffff;
    color: #000000;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.4);
}

/* Hero Image / Mockup */
.hero-image-container {
    position: relative;
    perspective: 1000px;
}

.app-mockup-placeholder {
    width: 100%;
    aspect-ratio: 16/10;
    background: #111;
    /* Fallback */
    background: linear-gradient(145deg, #1a1a1a, #0a0a0a);
    border: 1px solid var(--surface-border);
    border-radius: 20px;
    box-shadow:
        0 25px 50px -12px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.1);
    transform: rotateY(-10deg) rotateX(5deg);
    transition: transform 0.5s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.app-mockup-placeholder:hover {
    transform: rotateY(0) rotateX(0);
}

.mockup-header {
    height: 40px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--surface-border);
    display: flex;
    align-items: center;
    padding: 0 1rem;
    gap: 0.5rem;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.red {
    background: #ef4444;
}

.yellow {
    background: #eab308;
}

.green {
    background: #22c55e;
}

.mockup-screen {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.placeholder-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.1);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.app-screenshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
}

/* Features */
.features {
    padding: 8rem 0;
}

.section-title {
    margin-bottom: 6rem;
    text-align: center;
}

.feature-row {
    display: flex;
    align-items: center;
    gap: 6rem;
    margin-bottom: 8rem;
}

.feature-row.reverse {
    flex-direction: row-reverse;
}

.feature-text {
    flex: 1;
}

.feature-image {
    flex: 1;
}

.icon-box {
    width: 50px;
    height: 50px;
    background: var(--surface-bg);
    border: 1px solid var(--surface-border);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 0 20px -5px var(--accent-glow);
}

.image-placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    background: var(--surface-bg);
    border: 1px solid var(--surface-border);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Value Prop & Privacy - Cards */
.value-prop,
.privacy-section {
    padding: 4rem 0;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.card {
    background: var(--surface-bg);
    border: 1px solid var(--surface-border);
    border-radius: 20px;
    padding: 3rem;
    transition: 0.3s;
}

.card:hover {
    background: var(--surface-hover);
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.15);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.privacy-card {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.3), rgba(15, 23, 42, 0.3));
    border: 1px solid var(--surface-border);
    border-radius: 24px;
    padding: 4rem;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.icon-box.large {
    width: 80px;
    height: 80px;
    font-size: 2.5rem;
    margin: 0 auto 2rem;
}

/* How It Works */
.how-it-works {
    padding: 6rem 0;
    opacity: 0.8;
}

.steps {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.step {
    text-align: center;
    flex: 1;
    position: relative;
    z-index: 2;
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--bg-dark);
    border: 1px solid var(--surface-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-weight: 700;
    box-shadow: 0 0 0 8px var(--bg-dark);
    /* Fake spacing for line */
}

.step-line {
    flex: 2;
    height: 1px;
    background: var(--surface-border);
    margin-top: 20px;
}

/* Footer */
.footer {
    padding: 4rem 0;
    border-top: 1px solid var(--surface-border);
    margin-top: 4rem;
    color: #666;
    font-size: 0.9rem;
}

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

.footer-links {
    display: flex;
    gap: 2rem;
}

/* Image Assets */
.logo-icon-img {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    object-fit: contain;
}

.feature-img {
    width: 100%;
    height: auto;
    border-radius: 16px;
    border: 1px solid var(--surface-border);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease;
}

.feature-img:hover {
    transform: scale(1.02);
    border-color: rgba(255, 255, 255, 0.1);
}

/* Responsive */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: 0;
    }

    .hero-text {
        order: 1;
        margin-bottom: 3rem;
    }

    .hero-image-container {
        order: 2;
    }

    .cta-group {
        justify-content: center;
    }

    .subheadline {
        margin: 0 auto 2rem;
    }

    .feature-row,
    .feature-row.reverse {
        flex-direction: column;
        gap: 3rem;
        text-align: center;
    }

    .icon-box {
        margin: 0 auto 1.5rem;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .grid-2 {
        grid-template-columns: 1fr;
    }

    .steps {
        flex-direction: column;
        gap: 2rem;
        align-items: center;
    }

    .step-line {
        display: none;
    }

    .footer-content {
        flex-direction: column;
        gap: 2rem;
    }
}