:root {
    --bg-color: #ffffff;
    --text-color: #000000;
    --hint-color: #707579;
    --button-color: #3390ec;
    --button-text-color: #ffffff;
    --secondary-bg: #f4f4f5;
    --item-bg: #ffffff;
    --border-radius: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--secondary-bg);
    color: var(--text-color);
    margin: 0; padding: 0;
    -webkit-user-select: none; user-select: none;
}

header {
    background-color: var(--bg-color);
    padding: 20px; text-align: center;
    font-size: 20px; font-weight: bold;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky; top: 0; z-index: 100;
}

main { padding: 16px; display: flex; flex-direction: column; gap: 16px; }

.product-card {
    background-color: var(--item-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    display: flex; flex-direction: column;
}

.product-image { width: 100%; height: 180px; object-fit: cover; }
.product-info { padding: 16px; }
.product-name { font-size: 18px; font-weight: 700; }
.product-desc { font-size: 14px; color: var(--hint-color); margin: 4px 0 12px; }
.product-footer { display: flex; justify-content: space-between; align-items: center; }
.product-price { font-size: 18px; font-weight: 800; color: var(--button-color); }

.add-btn {
    background-color: var(--button-color);
    color: var(--button-text-color);
    border: none; padding: 8px 20px;
    border-radius: 20px; font-size: 14px; font-weight: 600;
}

.counter-container { display: flex; align-items: center; gap: 12px; }
.count-btn {
    width: 30px; height: 30px; border-radius: 50%; border: none;
    background-color: var(--secondary-bg); font-size: 18px;
    display: flex; justify-content: center; align-items: center;
}

/* Modal styles */
.modal {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.5); z-index: 1000;
    display: flex; align-items: flex-end;
}

.modal-content {
    background: var(--bg-color);
    width: 100%; padding: 24px;
    border-radius: 20px 20px 0 0;
    animation: slideUp 0.3s ease-out;
}

.input-group { margin-bottom: 20px; }
.input-group label { display: block; font-size: 14px; font-weight: bold; margin-bottom: 8px; color: var(--hint-color); }
.input-group input {
    width: 100%; padding: 12px; border-radius: 12px;
    border: 1px solid var(--secondary-bg); background: var(--secondary-bg);
    color: var(--text-color); font-size: 16px; outline: none;
}

.returning-badge {
    background: #e8f4fd; color: #3390ec;
    padding: 10px; border-radius: 10px;
    font-size: 14px; font-weight: bold; margin-bottom: 20px;
    text-align: center;
}

.error-text { color: #ff3b30; font-size: 12px; margin-top: 4px; }

.modal-actions { margin-top: 20px; text-align: center; }
.cancel-btn { background: none; border: none; color: var(--hint-color); font-size: 14px; cursor: pointer; }

@keyframes slideUp { from { transform: translateY(100%); } to { transform: translateY(0); } }

/* Dark theme */
body.dark {
    --bg-color: #1c1c1d; --text-color: #ffffff;
    --hint-color: #98989e; --secondary-bg: #000000; --item-bg: #1c1c1d;
}
.address-wrapper {
    display: flex; gap: 8px;
}
.address-wrapper input { flex: 1; }
.geo-btn {
    background: var(--secondary-bg); border: 1px solid #ddd;
    border-radius: 12px; width: 45px; cursor: pointer;
    font-size: 18px; display: flex; align-items: center; justify-content: center;
}
.geo-status { font-size: 11px; color: var(--button-color); margin-top: 4px; }

textarea {
    width: 100%; padding: 12px; border-radius: 12px;
    border: 1px solid var(--secondary-bg); background: var(--secondary-bg);
    color: var(--text-color); font-size: 14px; outline: none;
    resize: none; height: 60px; font-family: inherit;
}

/* Dark theme additions */
body.dark .geo-btn { border-color: #333; }