:root {
    --primary-color: #7b1fa2; /* Purple 700 */
    --primary-light: #ae52d4; /* Purple 300 */
    --primary-dark: #4a148c; /* Purple 900 */
    --accent-color: #ffca28; /* Amber 400 */
    --text-color: #333;
    --bg-color: #f3e5f5; /* Purple 50 */
    --white: #ffffff;
    --card-shadow: 0 4px 6px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

a { text-decoration: none; color: inherit; }

/* Header */
header {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 1rem;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

#menu-toggle {
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
}

.user-actions a {
    margin-left: 15px;
    font-weight: bold;
}

.user-actions a:hover {
    color: var(--accent-color);
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: -250px;
    width: 250px;
    height: 100%;
    background-color: var(--white);
    box-shadow: 2px 0 5px rgba(0,0,0,0.2);
    transition: left 0.3s ease;
    z-index: 1001;
    padding-top: 60px;
}

.sidebar.active {
    left: 0;
}

.sidebar ul {
    list-style: none;
}

.sidebar li a {
    display: block;
    padding: 15px 20px;
    border-bottom: 1px solid #eee;
    color: var(--text-color);
}

.sidebar li a:hover {
    background-color: var(--bg-color);
    color: var(--primary-color);
}

#menu-close {
    position: absolute;
    top: 10px;
    right: 15px;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
}

#overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
}

#overlay.active {
    display: block;
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 20px auto;
    padding: 0 15px;
}

.hero {
    text-align: center;
    margin-bottom: 30px;
}

.search-bar input {
    width: 100%;
    max-width: 500px;
    padding: 12px;
    border: 2px solid var(--primary-light);
    border-radius: 25px;
    font-size: 1rem;
    outline: none;
}

.search-bar input:focus {
    border-color: var(--primary-color);
}

/* Grid */
.lots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.lot-card {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: transform 0.2s;
}

.lot-card:hover {
    transform: translateY(-5px);
}

.lot-image {
    height: 200px;
    background-size: cover;
    background-position: center;
    background-color: #ddd;
}

.lot-info {
    padding: 15px;
}

.lot-info h3 {
    margin-bottom: 10px;
    font-size: 1.2rem;
    color: var(--primary-dark);
}

.price {
    font-weight: bold;
    color: var(--primary-color);
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.time-left {
    color: #777;
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.btn-info {
    display: block;
    text-align: center;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 10px;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.btn-info:hover {
    background-color: var(--primary-dark);
}

/* Forms */
.form-container {
    max-width: 500px;
    margin: 0 auto;
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--card-shadow);
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.btn-primary {
    width: 100%;
    padding: 12px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
}

/* Responsive */
@media (max-width: 768px) {
    .header-container {
        padding: 0.5rem;
    }
    
    .user-actions {
        display: none; /* Hide top actions on mobile, move to sidebar */
    }
    
    .user-actions.mobile-visible {
        display: block;
    }
}