/* =======================
   GLOBAL STYLES
======================= */

body {
    font-family: Arial, sans-serif;
    background: #0f172a;
    color: white;
    margin: 0;
    padding: 0;
    text-align: center;
}

/* =======================
   CONTAINER
======================= */

.container {
    margin-top: 60px;
}

/* =======================
   FORM LAYOUT (VERTICAL)
======================= */

.form {
    display: flex;
    flex-direction: column; /* downward layout */
    align-items: center;
    gap: 12px;
    margin-top: 20px;
}

/* =======================
   INPUTS
======================= */

input {
    width: 280px;
    padding: 12px;
    border-radius: 8px;
    border: none;
    outline: none;
    font-size: 14px;
}

/* focus effect */
input:focus {
    border: 2px solid #3b82f6;
}

/* =======================
   BUTTONS
======================= */

button {
    width: 300px;
    padding: 12px;
    border: none;
    border-radius: 8px;
    background: #3b82f6;
    color: white;
    font-size: 16px;
    cursor: pointer;
    transition: 0.3s;
}

button:hover {
    background: #2563eb;
}

/* =======================
   CARDS (COURSES)
======================= */

.card {
    background: #1e293b;
    margin: 20px auto;
    padding: 20px;
    width: 300px;
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

/* =======================
   LINKS
======================= */

a {
    color: #60a5fa;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* =======================
   HEADINGS
======================= */

h1, h2, h3 {
    margin-top: 20px;
}