:root {
    --primary: #3498db;
    --primary-dark: #2980b9;
    --danger: #e74c3c;
    --success: #27ae60;
    --gray: #f4f6f7;
    --dark: #2c3e50;
}

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

body { background-color: var(--gray); color: var(--dark); }

/* Header */
header { background: var(--dark); color: white; padding: 15px 0; box-shadow: 0 2px 5px rgba(0,0,0,0.1); }
.header-content { max-width: 1200px; margin: auto; padding: 0 20px; display: flex; justify-content: space-between; align-items: center; }
.user-info { display: flex; align-items: center; gap: 15px; }
.btn-logout { background: var(--danger); border: none; color: white; padding: 8px 15px; border-radius: 5px; cursor: pointer; }

/* Container */
.container { max-width: 1200px; margin: 20px auto; padding: 0 15px; }

/* Cards */
.card { background: white; border-radius: 10px; padding: 25px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); margin-bottom: 30px; }
.form-card h2 { margin-bottom: 20px; color: var(--primary); border-bottom: 2px solid var(--gray); padding-bottom: 10px; }

/* Forms */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; margin-bottom: 20px; }
.form-group { margin-bottom: 15px; }
.form-group label { display: block; margin-bottom: 5px; font-weight: 600; font-size: 0.9rem; }
input, select, textarea { width: 100%; padding: 10px; border: 1px solid #ddd; border-radius: 6px; font-size: 1rem; }
input:focus, select:focus { border-color: var(--primary); outline: none; }

/* Buttons */
.btn-main { width: 100%; padding: 12px; background: var(--primary); color: white; border: none; border-radius: 6px; font-size: 1.1rem; cursor: pointer; transition: 0.3s; }
.btn-main:hover { background: var(--primary-dark); }

/* Photo Preview */
.photo-preview { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; }
.photo-preview img { width: 80px; height: 80px; object-fit: cover; border-radius: 8px; border: 2px solid var(--primary); }

/* Properties List */
.properties-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.property-card { background: white; border-radius: 10px; overflow: hidden; box-shadow: 0 2px 8px rgba(0,0,0,0.1); position: relative; }
.property-card img.main-img { width: 100%; height: 200px; object-fit: cover; }
.property-info { padding: 15px; }
.property-price { font-size: 1.4rem; font-weight: bold; color: var(--primary); margin: 5px 0; }
.property-specs { font-size: 0.85rem; color: #666; margin-bottom: 10px; display: flex; gap: 10px; flex-wrap: wrap; }
.status-badge { position: absolute; top: 10px; right: 10px; padding: 5px 10px; border-radius: 20px; font-size: 0.8rem; font-weight: bold; color: white; }
.status-disponible { background: var(--success); }
.status-reservado { background: #f39c12; }
.status-vendido, .status-alquilado { background: var(--danger); }

.btn-delete { background: #fff; border: 1px solid var(--danger); color: var(--danger); padding: 5px 10px; border-radius: 4px; cursor: pointer; font-size: 0.8rem; margin-top: 10px; }
.btn-delete:hover { background: var(--danger); color: white; }

/* Login Page */
.login-body { background: var(--dark); height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-container { width: 100%; max-width: 400px; padding: 20px; }
.login-card { background: white; padding: 30px; border-radius: 10px; text-align: center; }
.logo i { font-size: 3rem; color: var(--primary); }
.btn-login { width: 100%; padding: 12px; background: var(--primary); color: white; border: none; border-radius: 6px; font-size: 1rem; cursor: pointer; margin-top: 10px; }
.error-msg { color: var(--danger); margin-top: 10px; font-size: 0.9rem; }
.demo-info { margin-top: 20px; padding-top: 15px; border-top: 1px solid #eee; font-size: 0.8rem; color: #777; }

/* Responsive */
@media (max-width: 768px) {
    .header-content { flex-direction: column; text-align: center; gap: 10px; }
    .form-grid { grid-template-columns: 1fr; }
}