* {
    box-sizing: border-box;
    font-family: "Segoe UI", Arial, sans-serif;
}

body {
    margin: 0;
    background: #f2f4f7;
    color: #333;
}

/* HEADER */
.header {
    background: linear-gradient(90deg, #0b5ed7, #084298);
    color: white;
    padding: 20px 0;
}

.header-container {
    width: 90%;
    margin: auto;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-circle {
    width: 60px;
    height: 60px;
    background: white;
    color: #0b5ed7;
    border-radius: 50%;
    font-weight: bold;
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
}

.logo-text h1 {
    margin: 0;
    font-size: 20px;
}

.logo-text p {
    margin: 4px 0 0;
    font-size: 14px;
    opacity: 0.9;
}

/* NAV */
.nav {
    background: #e9ecef;
    border-bottom: 1px solid #ccc;
}

.nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    width: 90%;
    margin: auto;
}

.nav li {
    margin-right: 20px;
}

.nav a {
    display: block;
    padding: 12px 10px;
    color: #333;
    text-decoration: none;
    font-weight: 500;
}

.nav a.active,
.nav a:hover {
    color: #0b5ed7;
    border-bottom: 3px solid #0b5ed7;
}

/* MAIN */
.main {
    padding: 30px 0;
}

.container {
    width: 85%;
    margin: auto;
}

.page-title {
    text-align: center;
    color: #0b5ed7;
}

.page-desc {
    text-align: center;
    max-width: 800px;
    margin: 10px auto 30px;
}

/* CARD */
.card {
    background: white;
    padding: 25px;
    border-radius: 6px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}

/* FORM */
.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
}

input, select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.form-row {
    display: flex;
    gap: 15px;
}

.form-actions {
    text-align: center;
    margin-top: 20px;
}

button {
    background: #0b5ed7;
    color: white;
    border: none;
    padding: 10px 30px;
    font-size: 16px;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background: #084298;
}

/* RESULT */
.result {
    margin-top: 40px;
    background: #ffffff;
    padding: 25px;
    border-radius: 6px;
    text-align: center;
}

.image-preview img {
    max-width: 100%;
    border: 1px solid #ccc;
    padding: 5px;
}

.download-btn {
    display: inline-block;
    margin-top: 15px;
    padding: 10px 20px;
    background: #198754;
    color: white;
    text-decoration: none;
    border-radius: 4px;
}

/* FOOTER */
.footer {
    background: #0b5ed7;
    color: white;
    text-align: center;
    padding: 15px;
    font-size: 14px;
    margin-top: 40px;
}