:root {
    --glass-bg: rgba(255, 255, 255, 0.7);
    --text-main: #1d1d1f;
    --text-light: #6e6e73;
    --card-shadow: 0 12px 40px rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background: #fbfbfd;
    color: var(--text-main);
    line-height: 1.5;
}

/* Navigation */
#main-nav {
    position: fixed;
    top: 25px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 1100px;
    padding: 14px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-radius: 50px;
    border: 1px solid rgba(255,255,255,0.3);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.02);
    z-index: 1000;
}

.nav-logo {
    font-weight: 800;
    text-decoration: none;
    color: var(--text-main);
    font-size: 1.2rem;
}

.cta-btn {
    background: #111;
    color: #fff;
    padding: 10px 22px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
}

/* Layout */
.container {
    max-width: 1300px;
    margin: auto;
    padding: 180px 40px 100px;
}

header {
    text-align: center;
    margin-bottom: 80px;
}

h1 {
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 800;
    letter-spacing: -2px;
    margin-bottom: 20px;
}

.header-sub {
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 600px;
    margin: auto;
}

/* Card Grid */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 30px;
}

.card {
    background: #fff;
    border-radius: 30px;
    padding: 40px;
    border: 1px solid rgba(0,0,0,0.03);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px rgba(0,0,0,0.06);
}

.title {
    font-weight: 600;
    font-size: 1.4rem;
    margin-bottom: 8px;
}

.sub {
    font-size: 0.75rem;
    color: var(--text-light);
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.1em;
}

/* Updated Button Group Styling */
.button-group {
    display: flex;
    gap: 10px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.btn {
    flex: 1;
    min-width: 80px;
    background: #f5f5f7; 
    color: var(--text-main);
    padding: 14px;
    border-radius: 16px;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    text-align: center;
    transition: all 0.2s ease;
}

.btn:hover {
    background: #e8e8ed;
    transform: scale(1.02);
}

/* Footer */
footer {
    text-align: center;
    padding: 80px 0 40px;
    color: var(--text-light);
    border-top: 1px solid #f0f0f0;
}