:root {
    --primary: #007bff;
    --secondary: #6c757d;
    --dark: #1a1a1a;
    --light: #f8f9fa;
    --accent: #ffc107;
    --glass: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
}

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

body {
    background: #0f172a;
    color: white;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Hub Page Styles */
.hub-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    text-align: center;
}

.hub-title {
    font-size: 2.2rem; /* Mobile default */
    font-weight: 800;
    margin-bottom: 1rem;
    color: #38bdf8;
}

.hub-subtitle {
    font-size: 1rem;
    color: #94a3b8;
    margin-bottom: 3rem;
    max-width: 600px;
}

.button-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* Mobile default: 2 columns */
    gap: 1.5rem;
    width: 100%;
    max-width: 1000px;
}

@media (min-width: 768px) {
    .hub-title { font-size: 3rem; }
    .hub-subtitle { font-size: 1.2rem; margin-bottom: 4rem; }
    .button-grid { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 2.5rem; }
}

.nav-button {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: var(--glass);
    backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: white;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: var(--shadow);
    cursor: pointer;
    padding: 1rem;
    text-align: center;
}

.nav-button:hover {
    transform: scale(1.15) translateY(-10px);
    background: rgba(255, 255, 255, 0.2);
    border-color: #38bdf8;
    box-shadow: 0 0 25px rgba(56, 189, 248, 0.5);
}

.nav-button i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.nav-button span {
    font-size: 0.9rem;
    font-weight: 600;
    line-height: 1.2;
}

/* Floating WhatsApp Button */
.whatsapp-float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 40px;
    right: 40px;
    background-color: #25d366;
    color: #FFF;
    border-radius: 50px;
    text-align: center;
    font-size: 30px;
    box-shadow: 2px 2px 10px rgba(0,0,0,0.3);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: transform 0.3s;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    color: white;
}

/* Landing generic styles */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    position: relative;
    background-size: cover;
    background-position: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.6);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

@media (max-width: 768px) {
    .hub-title { font-size: 2.2rem; }
    .button-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; justify-items: center; }
}