/* Reset & Base */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f4f9;
    color: #333;
    line-height: 1.6;
}

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

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 1px solid #ddd;
}

h1 {
    color: #2c3e50;
}

/* Helper Classes */
.hidden {
    display: none !important;
}

.error-msg {
    color: #e74c3c;
    font-size: 0.9rem;
    margin-bottom: 10px;
    min-height: 1.2em;
}

/* Buttons */
.primary-btn {
    background-color: #3498db;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    width: 100%;
}

.primary-btn:hover {
    background-color: #2980b9;
}

#logout-btn {
    background-color: #e74c3c;
    color: white;
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

#logout-btn:hover {
    background-color: #c0392b;
}

/* Login Section */
.login-card {
    background: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    max-width: 400px;
    margin: 40px auto;
}

.login-card h2 {
    margin-bottom: 20px;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

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

/* Plants Grid */
.plants-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.plant-card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    overflow: hidden;
    transition: transform 0.2s;
}

.plant-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.plant-header {
    background-color: #34495e;
    color: white;
    padding: 15px;
}

.plant-header h3 {
    font-size: 1.25rem;
    margin-bottom: 5px;
}

.plant-header .plant-type {
    font-size: 0.8rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.plant-body {
    padding: 20px;
}

.data-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    border-bottom: 1px solid #eee;
    padding-bottom: 8px;
}

.data-row:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.data-label {
    color: #7f8c8d;
    font-size: 0.9rem;
}

.data-value {
    font-weight: 600;
    color: #2c3e50;
}

.data-unit {
    font-size: 0.8rem;
    color: #95a5a6;
    margin-left: 2px;
}

.status-indicator {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: #2ecc71; /* Green for active */
    margin-right: 5px;
}

/* Modal */
.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); display: flex; justify-content: center; align-items: center; z-index: 1000; }
.modal-content { background: white; padding: 30px; border-radius: 8px; width: 90%; max-width: 400px; position: relative; }
.close-btn { position: absolute; top: 10px; right: 15px; font-size: 24px; cursor: pointer; background: none; border: none; color: #aaa; }
.close-btn:hover { color: #000; }