* {
    box-sizing: border-box;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    margin: 0;
    background: #f4f6f9;
    color: #222;
}

/* MAIN CONTAINER */
.container {
    max-width: 420px;
    margin: auto;
    padding: 20px;
}

/* HEADINGS */
h1, h2, h3 {
    margin-bottom: 15px;
    color: #0b8457;
}

/* INPUTS */
input, select {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    margin-bottom: 15px;
    border-radius: 10px;
    border: 1px solid #ccc;
    outline: none;
}

/* BUTTONS */
button, .btn {
    width: 100%;
    padding: 16px;
    background: #0b8457;
    color: white;
    font-size: 16px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    text-align: center;
    display: block;
    text-decoration: none;
}

.btn.outline {
    background: transparent;
    border: 2px solid #0b8457;
    color: #0b8457;
}

/* BOXES */
.box {
    background: white;
    padding: 20px;
    border-radius: 15px;
    margin-bottom: 15px;
}

/* TOP BAR */
.topbar {
    background: #0b8457;
    color: white;
    padding: 18px;
    text-align: center;
    font-size: 18px;
}

/* ERROR / INFO */
.error {
    background: #ffe0e0;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 15px;
    color: #b30000;
}

.small {
    text-align: center;
    font-size: 14px;
    color: #555;
}

/* DESKTOP ADJUSTMENTS */
@media (min-width: 768px) {
    body {
        background: #eef1f5;
    }
}