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

:root {
    --primary-color: #2481cc;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --bg-color: var(--tg-theme-bg-color, #ffffff);
    --text-color: var(--tg-theme-text-color, #000000);
    --hint-color: var(--tg-theme-hint-color, #999999);
    --button-color: var(--tg-theme-button-color, #2481cc);
    --button-text-color: var(--tg-theme-button-text-color, #ffffff);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 0;
    margin: 0;
    overflow-x: hidden;
}

#app {
    max-width: 100%;
    margin: 0 auto;
    padding-bottom: 80px;
}

/* Loader */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-color);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loader.hidden {
    display: none;
}

.spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-left-color: var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Progress bar */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    width: 0%;
    transition: width 0.3s ease;
}

/* Access denied overlay */
.access-denied {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    z-index: 10000;
}

.access-denied.hidden {
    display: none;
}

.access-denied-card {
    background: var(--bg-color);
    color: var(--text-color);
    border-radius: 16px;
    padding: 32px 24px;
    width: 100%;
    max-width: 420px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.access-denied-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.access-denied-card h2 {
    margin-bottom: 12px;
    font-size: 22px;
}

.access-denied-card p {
    margin-bottom: 24px;
    font-size: 15px;
    color: var(--hint-color);
}

/* Screen navigation */
.screen-nav {
    position: sticky;
    top: 0;
    background: var(--bg-color);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    display: flex;
    overflow-x: auto;
    z-index: 100;
    padding: 8px 4px;
    gap: 4px;
}

.nav-btn {
    flex: 1;
    min-width: 80px;
    padding: 8px 12px;
    border: none;
    background: transparent;
    color: var(--hint-color);
    font-size: 13px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.nav-btn.active {
    background: var(--primary-color);
    color: var(--button-text-color);
    font-weight: 600;
}

/* Screens */
.screen {
    display: none;
    padding: 16px;
    animation: fadeIn 0.3s;
}

.screen.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

h2 {
    margin-bottom: 16px;
    font-size: 20px;
    font-weight: 600;
}

/* Form sections */
.form-section {
    background: var(--bg-color);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-color);
}

.form-group label.required::after {
    content: ' *';
    color: var(--danger-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    font-size: 16px;
    font-family: inherit;
    background: var(--bg-color);
    color: var(--text-color);
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    min-height: 80px;
    resize: vertical;
}

.form-group .help-text {
    font-size: 12px;
    color: var(--hint-color);
    margin-top: 4px;
}

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
    border-color: var(--danger-color);
}

.form-group .error-message {
    color: var(--danger-color);
    font-size: 12px;
    margin-top: 4px;
}

/* Integer input validation */
.int-input.invalid {
    background-color: #ffe6eb; /* ніжно-рожевий */
    border-color: #ff6b9d;
}

.int-error-tooltip {
    color: #ff6b9d;
    font-size: 12px;
    margin-top: 4px;
    font-weight: 500;
}

/* Checkbox wrapper */
.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 0;
}

.checkbox-wrapper input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.checkbox-wrapper .checkbox-label {
    font-size: 14px;
    color: var(--text-color);
    cursor: pointer;
    margin: 0;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-block;
    text-align: center;
    text-decoration: none;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--button-color);
    color: var(--button-text-color);
}

.btn-secondary {
    background: var(--secondary-color);
    color: #ffffff;
}

.btn-success {
    background: var(--success-color);
    color: #ffffff;
}

.btn-danger {
    background: var(--danger-color);
    color: #ffffff;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-block {
    width: 100%;
    display: block;
}

#btn-intro-next {
    width: 100%;
    display: block;
}

/* Items list */
.items-list {
    margin-bottom: 16px;
}

.info-card {
    background: rgba(36, 129, 204, 0.08);
    border-left: 4px solid var(--primary-color);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 16px;
    font-size: 14px;
    color: var(--text-color);
}

.info-card p {
    margin-bottom: 8px;
}

.item-card {
    background: rgba(0, 0, 0, 0.03);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 8px;
    position: relative;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

.item-card:hover {
    background: rgba(0, 0, 0, 0.06);
}

.item-card:active {
    transform: scale(0.99);
}

.item-card h4 {
    font-size: 16px;
    margin-bottom: 6px;
}

.item-card p {
    font-size: 14px;
    color: var(--hint-color);
    margin: 2px 0;
}

.item-card .btn-remove {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--danger-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 28px;
    height: 28px;
    font-size: 18px;
    cursor: pointer;
    line-height: 1;
}

.empty-state {
    background: rgba(0, 0, 0, 0.03);
    border-radius: 8px;
    padding: 16px;
    text-align: center;
    color: var(--hint-color);
    font-size: 14px;
}

/* Map */
.map-container {
    width: 100%;
    height: 300px;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 16px;
}

.map-instructions {
    background: rgba(36, 129, 204, 0.1);
    border-left: 3px solid var(--primary-color);
    padding: 12px;
    margin-bottom: 16px;
    border-radius: 6px;
}

.map-instructions p {
    margin: 0;
    font-size: 14px;
}

.polygon-points {
    background: rgba(0, 0, 0, 0.03);
    padding: 12px;
    border-radius: 8px;
    margin: 12px 0;
}

.utm-section {
    margin: 12px 0;
}

.points-fields {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 12px;
}

.point-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: flex-end;
    padding: 8px;
    border: 1px dashed rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

.point-label {
    font-weight: 600;
    min-width: 80px;
    color: var(--text-color);
}

.point-input {
    flex: 1;
    min-width: 120px;
}

.point-input label {
    display: block;
    font-size: 12px;
    color: var(--hint-color);
    margin-bottom: 4px;
}

.point-input input {
    width: 100%;
    padding: 12px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    font-size: 16px;
    font-family: inherit;
}

.polygon-points h4 {
    font-size: 14px;
    margin-bottom: 8px;
}

.polygon-points ul {
    list-style: none;
    max-height: 150px;
    overflow-y: auto;
}

.polygon-points li {
    font-size: 13px;
    padding: 4px 0;
    font-family: monospace;
}

/* Photo section */
.photo-section {
    margin: 16px 0;
}

.photo-preview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 8px;
    margin-top: 12px;
}

.photo-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: 8px;
    overflow: hidden;
}

.photo-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-item .btn-remove-photo {
    position: absolute;
    top: 4px;
    right: 4px;
    background: var(--danger-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    font-size: 16px;
    cursor: pointer;
}

/* Form actions */
.form-actions {
    display: flex;
    gap: 8px;
    margin-top: 16px;
}

.form-actions .btn {
    flex: 1;
}

/* Navigation buttons */
.navigation-buttons {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    position: sticky;
    bottom: 16px;
    background: var(--bg-color);
    padding: 12px 0;
}

.navigation-buttons .btn {
    flex: 1;
}

/* Responsive */
@media (max-width: 480px) {
    .screen {
        padding: 12px;
    }
    
    .map-container {
        height: 250px;
    }
    
    .btn {
        padding: 10px 16px;
        font-size: 14px;
    }
}

/* MapLibre popup styles */
.maplibregl-popup-content {
    padding: 12px;
    border-radius: 8px;
}

.maplibregl-popup-close-button {
    font-size: 20px;
}