:root {
    --primary: #0076ff;
    --primary-dark: #0056b3;
    --bg-dark: #0a0a0c;
    --card-bg: rgba(255, 255, 255, 0.05);
    --text-main: #ffffff;
    --text-dim: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', 'Inter', sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow-x: hidden;
}

/* --- Navigation --- */
nav.main-nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(10, 10, 12, 0.8);
    border-bottom: 1px solid var(--glass-border);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -1px;
    color: var(--primary);
}

/* --- Hero Section --- */
.hero-sec {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 20px 60px;
    position: relative;
    background: radial-gradient(circle at 80% 20%, rgba(0, 118, 255, 0.15) 0%, transparent 40%),
                radial-gradient(circle at 20% 80%, rgba(121, 40, 202, 0.15) 0%, transparent 40%);
}

.hero-container {
    max-width: 1200px;
    width: 100%;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    align-items: center;
}

.hero-content h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 24px;
    background: linear-gradient(to right, #fff, #a5a5a5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-dim);
    margin-bottom: 40px;
    max-width: 500px;
}

.cta-group {
    display: flex;
    gap: 16px;
}

.btn {
    padding: 16px 32px;
    border-radius: 100px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-block;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 10px 20px rgba(0, 118, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 118, 255, 0.4);
    background: var(--primary-dark);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 1px solid var(--glass-border);
}

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

/* --- Mockup (Pure CSS) --- */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
}

.phone-mockup {
    width: 280px;
    height: 560px;
    background: #1a1a1c;
    border-radius: 40px;
    border: 8px solid #333;
    padding: 10px;
    position: relative;
    box-shadow: 0 50px 100px rgba(0,0,0,0.5);
    transform: rotateY(-15deg) rotateX(10deg);
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.phone-mockup:hover {
    transform: rotateY(0deg) rotateX(0deg);
}

.screen {
    width: 100%;
    height: 100%;
    background: #000;
    border-radius: 25px;
    overflow: hidden;
    position: relative;
}

.mock-content {
    padding: 20px;
}

.mock-profile {
    width: 60px;
    height: 60px;
    background: var(--primary);
    border-radius: 50%;
    margin-bottom: 15px;
}

.mock-line {
    height: 10px;
    background: rgba(255,255,255,0.1);
    border-radius: 5px;
    margin-bottom: 10px;
}

/* --- Features Section --- */
.features {
    padding: 100px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.section-tag {
    color: var(--primary);
    text-transform: uppercase;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 10px;
    display: block;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.f-card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 24px;
    border: 1px solid var(--glass-border);
    transition: all 0.3s;
}

.f-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

/* --- Directory Section --- */
.directory-preview {
    padding: 100px 20px;
    background: rgba(255,255,255,0.02);
}

.search-bar {
    max-width: 600px;
    margin: 40px auto;
    position: relative;
}

.search-bar input {
    width: 100%;
    padding: 20px 30px;
    border-radius: 100px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    color: white;
    font-size: 1.1rem;
    outline: none;
}

.search-bar input:focus {
    border-color: var(--primary);
}

@media (max-width: 968px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-content p {
        margin: 0 auto 40px;
    }
    .cta-group {
        justify-content: center;
    }
    .hero-visual {
        display: none;
    }
    .hero-content h1 {
        font-size: 3rem;
    }
}