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

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    color: #333;
    line-height: 1.6;
}

/* Nav */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: #0078d4;
    color: #fff;
}

nav .logo {
    font-weight: 700;
    font-size: 1.2rem;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
}

nav a {
    color: #fff;
    text-decoration: none;
}

nav a:hover {
    text-decoration: underline;
}

/* Hero */
.hero {
    text-align: center;
    padding: 5rem 2rem;
    background: linear-gradient(135deg, #0078d4, #00b7c3);
    color: #fff;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.badge {
    display: inline-block;
    background: #fff;
    color: #0078d4;
    padding: 0.5rem 1.5rem;
    border-radius: 2rem;
    font-weight: 600;
}

/* Features */
.features {
    padding: 4rem 2rem;
    text-align: center;
    background: #f5f5f5;
}

.features h2 {
    margin-bottom: 2rem;
    color: #0078d4;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.card {
    background: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.card h3 {
    color: #0078d4;
    margin-bottom: 0.5rem;
}

/* API Section */
.api-section {
    padding: 4rem 2rem;
    text-align: center;
}

.api-section h2 {
    margin-bottom: 1.5rem;
    color: #0078d4;
}

#api-btn {
    background: #0078d4;
    color: #fff;
    border: none;
    padding: 0.75rem 2rem;
    font-size: 1rem;
    border-radius: 4px;
    cursor: pointer;
}

#api-btn:hover {
    background: #005a9e;
}

#api-result {
    margin-top: 1rem;
    padding: 1rem;
    background: #f0f0f0;
    border-radius: 4px;
    display: inline-block;
    min-width: 300px;
    text-align: left;
}

/* Footer */
footer {
    text-align: center;
    padding: 1.5rem;
    background: #333;
    color: #aaa;
    font-size: 0.9rem;
}