/* Reset and variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --light-bg: #ecf0f1;
    --white: #ffffff;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --border-color: #bdc3c7;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: var(--text-dark);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    overflow: hidden;
}

/* Header */
header {
    background: var(--primary-color);
    color: var(--white);
    padding: 30px;
    text-align: center;
    position: relative;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    font-weight: 300;
}

header h2 {
    font-size: 1.2em;
    font-weight: 400;
    opacity: 0.9;
}

.header-actions {
    position: absolute;
    top: 30px;
    right: 30px;
}

.btn-header {
    background: rgba(255,255,255,0.2);
    color: var(--white);
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
    border: 2px solid rgba(255,255,255,0.3);
}

.btn-header:hover {
    background: rgba(255,255,255,0.3);
    border-color: rgba(255,255,255,0.5);
    transform: translateY(-2px);
}

/* Sections */
section {
    padding: 30px;
    border-bottom: 1px solid var(--border-color);
}

section:last-child {
    border-bottom: none;
}

section h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.5em;
    font-weight: 500;
    border-left: 4px solid var(--secondary-color);
    padding-left: 15px;
}

/* Photometer table */
.photometers-table table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    box-shadow: var(--shadow);
    border-radius: 8px;
    overflow: hidden;
    font-size: 0.85em; /* Smaller font size */
}

.photometers-table thead {
    background: var(--primary-color);
    color: var(--white);
}

.photometers-table th,
.photometers-table td {
    padding: 12px; /* Slightly reduced padding */
    text-align: left;
}

.photometers-table th {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.8em; /* Even smaller for headers */
    letter-spacing: 0.5px;
}

.photometers-table tbody tr {
    border-bottom: 1px solid var(--light-bg);
    transition: background 0.3s;
}

.photometers-table tbody tr:hover {
    background: var(--light-bg);
}

.photometers-table code {
    background: var(--light-bg);
    padding: 4px 8px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
    color: var(--danger-color);
}

.no-data {
    text-align: center;
    padding: 40px;
    color: var(--text-light);
    font-style: italic;
}

/* Status badges */
.badge {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85em;
    font-weight: 600;
    text-transform: lowercase;
    display: inline-block;
}

.badge-calibrating {
    background: #fff3cd;
    color: #856404;
}

.badge-calibrated {
    background: #d1ecf1;
    color: #0c5460;
}

.badge-operating {
    background: #d4edda;
    color: #155724;
}

.badge-active {
    background: var(--success-color);
    color: white;
}

/* Form */
.registration-form {
    background: var(--light-bg);
    padding: 30px;
    border-radius: 8px;
}

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

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--primary-color);
}

.required {
    color: var(--danger-color);
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1em;
    transition: border-color 0.3s;
    font-family: inherit;
}

.form-group input:focus {
    outline: none;
    border-color: var(--secondary-color);
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: var(--text-light);
    font-size: 0.85em;
}

/* Coordinates fieldset */
fieldset.coordinates {
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    background: var(--white);
}

fieldset legend {
    font-weight: 600;
    color: var(--secondary-color);
    padding: 0 10px;
}

/* Buttons */
.form-actions {
    display: flex;
    gap: 15px;
    padding: 20px 30px;
    background: var(--light-bg);
}

.btn-primary,
.btn-secondary {
    padding: 12px 30px;
    border: none;
    border-radius: 6px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: var(--secondary-color);
    color: var(--white);
}

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.4);
}

.btn-secondary {
    background: var(--white);
    color: var(--text-dark);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--light-bg);
}

/* Form note */
.form-note {
    margin-top: 20px;
    padding: 15px;
    background: #fff3cd;
    border-left: 4px solid var(--warning-color);
    border-radius: 4px;
    font-size: 0.9em;
}

.form-note code {
    background: rgba(255,255,255,0.7);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
}

/* Errors */
.errors {
    background: #f8d7da;
    border: 2px solid var(--danger-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

.errors h4 {
    color: var(--danger-color);
    margin-bottom: 10px;
}

.errors ul {
    list-style: none;
    padding-left: 0;
}

.errors li {
    padding: 5px 0;
    color: #721c24;
}

.errors li:before {
    content: "✗ ";
    font-weight: bold;
    margin-right: 5px;
}

/* Success page */
.success-message {
    text-align: center;
}

.success-box {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    border: 3px solid var(--success-color);
    border-radius: 12px;
    padding: 40px;
    max-width: 600px;
    margin: 0 auto;
}

.success-icon {
    width: 80px;
    height: 80px;
    line-height: 80px;
    margin: 0 auto 20px;
    background: var(--success-color);
    color: var(--white);
    font-size: 3em;
    border-radius: 50%;
    font-weight: bold;
}

.success-box h3 {
    color: var(--success-color);
    border: none;
    padding: 0;
    margin-bottom: 15px;
}

.phot-id {
    font-size: 1.2em;
    margin: 15px 0;
}

.phot-id code {
    background: white;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 1.1em;
    color: var(--danger-color);
}

.status-info {
    margin-top: 20px;
    font-size: 1.1em;
}

/* Log */
.log-section {
    background: var(--light-bg);
}

.log-box {
    background: #1e1e1e;
    color: #d4d4d4;
    padding: 20px;
    border-radius: 8px;
    overflow-x: auto;
    box-shadow: inset 0 2px 8px rgba(0,0,0,0.3);
}

.log-box pre {
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
    line-height: 1.6;
    margin: 0;
    white-space: pre-wrap;
}

/* Next steps */
.next-steps {
    background: #e3f2fd;
}

.next-steps ol {
    padding-left: 20px;
}

.next-steps li {
    margin-bottom: 15px;
    line-height: 1.6;
}

.next-steps code {
    background: rgba(255,255,255,0.7);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    color: var(--danger-color);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        margin: 10px;
    }
    
    header h1 {
        font-size: 1.8em;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .photometers-table {
        overflow-x: auto;
    }
    
    .form-actions {
        flex-direction: column;
    }
}

/* Delete section */
.delete-section {
    background: #fff5f5;
}

.delete-form {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    border: 2px solid var(--danger-color);
}

.delete-form select,
.delete-form input[type="text"],
.delete-form input[list] {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1em;
    font-family: inherit;
    background: white;
    cursor: pointer;
}

.delete-form select:focus,
.delete-form input[type="text"]:focus,
.delete-form input[list]:focus {
    outline: none;
    border-color: var(--danger-color);
}

.form-warning {
    margin-top: 20px;
    padding: 15px;
    background: #fff3cd;
    border-left: 4px solid var(--danger-color);
    border-radius: 4px;
    font-size: 0.9em;
}

.form-warning code {
    background: rgba(255,255,255,0.7);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
}

.btn-danger {
    background: var(--danger-color);
    color: var(--white);
    padding: 12px 30px;
    border: none;
    border-radius: 6px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-danger:hover {
    background: #c0392b;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.4);
}

/* Warning page */
.warning-message {
    text-align: center;
}

.warning-box {
    background: linear-gradient(135deg, #fff5f5 0%, #ffe5e5 100%);
    border: 3px solid var(--danger-color);
    border-radius: 12px;
    padding: 40px;
    max-width: 600px;
    margin: 0 auto;
}

.warning-icon {
    width: 80px;
    height: 80px;
    line-height: 80px;
    margin: 0 auto 20px;
    background: var(--danger-color);
    color: var(--white);
    font-size: 3em;
    border-radius: 50%;
    font-weight: bold;
}

.warning-box h3 {
    color: var(--danger-color);
    border: none;
    padding: 0;
    margin-bottom: 15px;
}

.warning-details {
    text-align: left;
    margin: 20px 0;
    padding: 20px;
    background: rgba(255,255,255,0.7);
    border-radius: 8px;
}

.warning-details ul {
    padding-left: 20px;
    margin: 15px 0;
}

.warning-details li {
    margin: 10px 0;
}

.warning-text {
    margin-top: 20px;
    padding: 15px;
    background: #f8d7da;
    border: 2px solid var(--danger-color);
    border-radius: 6px;
    font-size: 1.1em;
    text-align: center;
}

.confirm-form {
    margin-top: 30px;
}

.form-actions-centered {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-danger-large {
    background: var(--danger-color);
    color: var(--white);
    padding: 15px 40px;
    border: none;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-danger-large:hover {
    background: #c0392b;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.5);
}

.btn-secondary-large {
    background: var(--white);
    color: var(--text-dark);
    border: 2px solid var(--border-color);
    padding: 15px 40px;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-secondary-large:hover {
    background: var(--light-bg);
    transform: translateY(-3px);
}

.badge-inactive {
    background: #6c757d;
    color: white;
}

/* Sortable table */
.sort-arrow {
    opacity: 0.5;
    font-size: 0.8em;
    margin-left: 5px;
}

th:hover .sort-arrow {
    opacity: 1;
}

/* Deploy section */
.deploy-section {
    background: #e8f5e9;
}

.deploy-form {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    border: 2px solid var(--success-color);
}

.deploy-form select,
.deploy-form input[type="text"],
.deploy-form input[list] {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1em;
    font-family: inherit;
    background: white;
    cursor: pointer;
}

.deploy-form select:focus,
.deploy-form input[type="text"]:focus,
.deploy-form input[list]:focus {
    outline: none;
    border-color: var(--success-color);
}

.btn-success {
    background: var(--success-color);
    color: var(--white);
    padding: 12px 30px;
    border: none;
    border-radius: 6px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-success:hover {
    background: #229954;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(39, 174, 96, 0.4);
}

/* Status section */
.status-section {
    background: #fff9e6;
}

.status-form {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    border: 2px solid var(--warning-color);
}

.status-form select,
.status-form input[type="text"],
.status-form input[list] {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1em;
    font-family: inherit;
    background: white;
    cursor: pointer;
}

.status-form select:focus,
.status-form input[type="text"]:focus,
.status-form input[list]:focus {
    outline: none;
    border-color: var(--warning-color);
}

.btn-warning {
    background: var(--warning-color);
    color: var(--white);
    padding: 12px 30px;
    border: none;
    border-radius: 6px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-warning:hover {
    background: #e67e22;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(243, 156, 18, 0.4);
}