:root {
    --primary-gold: #D4AF37;
    --secondary-gold: #FFD700;
    --bg-color: #0f0f0f;
    --card-bg: #1a1a1a;
    --text-color: #ffffff;
    --input-bg: #252525;
    --border-color: #333;
    --transition: all 0.3s ease;
}

[data-theme="light"] {
    --bg-color: #ffffff;
    --card-bg: #f5f5f5;
    --text-color: #1a1a1a;
    --input-bg: #eeeeee;
    --border-color: #ddd;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: var(--transition);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.theme-switch {
    position: absolute;
    top: 20px;
    right: 20px;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--primary-gold);
    z-index: 10;
}

.container {
    width: 100%;
    max-width: 700px;
    background: var(--card-bg);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.7);
    border: 1px solid var(--border-color);
    text-align: center;
}

h1 {
    font-weight: 600;
    margin-bottom: 30px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

h1 span {
    color: var(--primary-gold);
    text-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
}

.input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

input[type="text"] {
    flex: 1;
    padding: 15px 20px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--input-bg);
    color: var(--text-color);
    outline: none;
    min-width: 250px;
    transition: var(--transition);
}

input[type="text"]:focus { border-color: var(--primary-gold); }

select {
    padding: 15px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--input-bg);
    color: var(--text-color);
    cursor: pointer;
    outline: none;
}

.btn-download {
    background: linear-gradient(45deg, var(--primary-gold), var(--secondary-gold));
    color: #000;
    border: none;
    padding: 15px 30px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
    text-transform: uppercase;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.btn-download:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(212, 175, 55, 0.4);
}

.loader {
    display: none;
    margin: 30px auto;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-gold);
    border-radius: 50%;
    width: 45px;
    height: 45px;
    animation: spin 1s linear infinite;
}

.error-banner {
    display: none;
    margin-top: 20px;
    padding: 15px;
    background: rgba(255, 68, 68, 0.1);
    border: 1px solid #ff4444;
    border-radius: 12px;
    color: #ff4444;
    font-size: 0.9rem;
}

@keyframes spin { to { transform: rotate(360deg); } }

#preview {
    display: none;
    margin-top: 30px;
    text-align: center;
    animation: fadeIn 0.6s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.preview-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    background: rgba(255, 255, 255, 0.03);
    padding: 20px;
    border-radius: 15px;
}

.preview-card img {
    width: 100%;
    max-width: 320px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.info {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}

.info h3 {
    font-size: 1.1rem;
    color: var(--primary-gold);
}

.info p {
    font-size: 0.9rem;
    opacity: 0.8;
}

#fileDetail {
    margin-top: 10px;
    display: flex;
    justify-content: center;
}

#resType {
    background: #333;
    padding: 5px 15px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
}

@media (max-width: 600px) {
    .container { padding: 20px; }
    .input-group { flex-direction: column; }
    input[type="text"] { min-width: unset; width: 100%; }
}