/* ============================================
   Guardian System - Unified Stylesheet
   Sistema Monitoraggio Gas Anestetici
   ============================================ */

/* === Variables === */
:root {
    --primary-color: #0077b6;
    --primary-hover: #005f8f;
    --primary-active: #004d73;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --background: #f8fafc;
    --surface: #ffffff;
    --surface-hover: #f1f5f9;
    --border-color: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

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

/* === Base === */
body, html {
    height: 100%;
    margin: 0;
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--background);
    color: var(--text-primary);
}

/* === Main Header (index.html) === */
.header {
    background: linear-gradient(135deg, #0077b6 0%, #005f8f 100%);
    color: white;
    padding: 20px 32px;
    box-shadow: var(--shadow-md);
}

.header h1 {
    font-size: 1.75rem;
    font-weight: 600;
    margin: 0;
    letter-spacing: -0.5px;
}

/* === Tab Navigation (index.html) === */
.tab-navigation {
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: 0;
    padding: 0;
}

.tablink {
    background: var(--surface);
    color: var(--text-secondary);
    border: none;
    outline: none;
    cursor: pointer;
    padding: 16px 32px;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.2s ease;
    border-bottom: 3px solid transparent;
    position: relative;
}

.tablink:hover {
    background: var(--background);
    color: var(--text-primary);
}

.tablink.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    background: var(--surface);
}

.tabcontent {
    display: none;
    height: calc(100% - 127px);
    background: var(--background);
}

.tabcontent iframe {
    border: none;
    display: block;
}

/* === Container (punti-prelievo.html) === */
.container {
    max-width: 1600px;
    margin: 0 auto;
}

/* === Page Title === */
h1.page-title {
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 40px;
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: -0.5px;
}

/* === Grid Layout (punti-prelievo.html) === */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 24px;
}

/* === Cards === */
.card {
    background: var(--surface);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--shadow-md);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid var(--border-color);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
    margin-bottom: 20px;
}

.punto-nome {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.stanza {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
}

.ultima-lettura {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.ultima-lettura::before {
    content: "🕒";
    font-size: 0.875rem;
}

/* === Gas Grid (punti-prelievo.html) === */
.gas-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.gas-grid .gas-item {
    background: var(--surface-hover);
    border-radius: 8px;
    padding: 12px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.gas-grid .gas-item:hover {
    background: var(--surface);
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.gas-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.gas-value {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-top: 4px;
}

/* === Status Indicator === */
.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success-color);
    display: inline-block;
    animation: pulse 2s infinite;
}

/* === Loading & Error States === */
.loading {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    font-size: 1rem;
}

.loading::before {
    content: "⏳ ";
}

.error {
    text-align: center;
    padding: 60px 20px;
    color: var(--danger-color);
    font-size: 1rem;
}

/* === Main Container (historypage_api.html) === */
.main-container {
    display: grid;
    grid-template-rows: auto 1fr;
    height: 100vh;
}

/* === Header Section (historypage_api.html) === */
#historyChart {
    touch-action: none;
}

.header-section {
    background: var(--surface);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    border-bottom: 1px solid var(--border-color);
    position: relative;
    z-index: 10;
}

/* === Mobile Filter Toggle Button === */
.filter-toggle-btn {
    display: none;
    width: 100%;
    padding: 12px 20px;
    background: var(--surface);
    border: none;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    align-items: center;
    justify-content: space-between;
}

.filter-toggle-btn .toggle-icon {
    transition: transform 0.3s ease;
}

.filter-toggle-btn.active .toggle-icon {
    transform: rotate(180deg);
}

/* === Collapsible Filter Panel === */
.filter-panel {
    display: contents;
}

/* === Gas Controls (historypage_api.html) === */
.gas-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    padding: 15px 20px;
    background: var(--surface);
    border-bottom: 1px solid var(--border-color);
    align-items: center;
}

/* Desktop: gas-checkboxes is just a flex container */
.gas-checkboxes {
    display: contents;
}

.gas-controls .gas-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 8px;
    transition: all 0.2s ease;
    background: var(--surface);
    border: 1px solid var(--border-color);
}

.gas-controls .gas-item:hover {
    background: var(--surface-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.gas-controls .gas-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.gas-controls .gas-item label {
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    user-select: none;
    display: flex;
    align-items: center;
    gap: 4px;
}

.gas-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

/* === Filter Controls === */
.filter-controls {
    display: flex;
    gap: 15px;
    align-items: center;
    margin-left: auto;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.control-group label {
    font-weight: 500;
    font-size: 14px;
    color: var(--text-secondary);
}

.control-group select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--surface);
    font-size: 14px;
    cursor: pointer;
    min-width: 80px;
    transition: all 0.2s ease;
}

.control-group select:hover {
    border-color: var(--primary-color);
}

.control-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

/* === Date/Time Controls Row === */
.date-time-row {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    background: var(--surface-hover);
    gap: 20px;
}

.datetime-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.datetime-group label {
    font-weight: 500;
    font-size: 14px;
    color: var(--text-secondary);
}

.datetime-group input[type="date"],
.datetime-group input[type="time"] {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    background: var(--surface);
    transition: all 0.2s ease;
}

.datetime-group input:hover {
    border-color: var(--primary-color);
}

.datetime-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

/* === Quick Date Presets === */
.quick-presets {
    display: flex;
    gap: 6px;
    margin-left: 20px;
}

.preset-btn {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--surface);
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.preset-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* === Action Buttons (in date row) === */
.action-buttons {
    display: flex;
    gap: 10px;
    margin-left: auto;
    align-items: center;
}

/* === Buttons === */
.btn {
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    justify-content: center;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    background: var(--primary-active);
    transform: translateY(0);
}

.btn-secondary {
    background: var(--surface);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--surface-hover);
    border-color: var(--primary-color);
}

/* === Content Section === */
.content-section {
    padding: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* === Chart Container === */
.chart-container {
    flex: 1;
    background: var(--surface);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-height: 0;
}

.chart-header {
    background: linear-gradient(135deg, #0077b6 0%, #0096c7 100%);
    color: white;
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chart-title {
    font-size: 15px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

.chart-actions {
    display: flex;
    gap: 8px;
}

.chart-action-btn {
    padding: 6px 12px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 12px;
    font-weight: 500;
}

.chart-action-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.chart-content {
    padding: 20px;
    flex: 1;
    position: relative;
    min-height: 0;
}

#trendChart {
    width: 100% !important;
    height: 100% !important;
}

/* === Fetch Info === */
/* NASCOSTO DEFINITIVAMENTE - rimuovere "display: none" per riattivare */
.fetch-info {
    display: none;
    background: var(--surface);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    padding: 12px 20px;
    font-size: 13px;
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.fetch-info-row {
    display: flex;
    gap: 10px;
    align-items: baseline;
    margin-bottom: 6px;
}

.fetch-info-row:last-child {
    margin-bottom: 0;
}

.fetch-label {
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 90px;
}

.fetch-url {
    font-family: 'Consolas', 'Monaco', monospace;
    color: var(--primary-color);
    word-break: break-all;
    font-size: 12px;
}

.fetch-details {
    color: var(--text-primary);
}

.fetch-perf {
    color: var(--primary-active);
    font-family: 'Consolas', 'Monaco', monospace;
    font-weight: 600;
}

/* === Loading Overlay === */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.loading-overlay.show {
    opacity: 1;
    pointer-events: all;
}

.loader {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* === Custom Tooltip === */
.custom-tooltip {
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 12px;
    pointer-events: none;
    position: absolute;
    z-index: 1000;
    display: none;
}

/* === Animations === */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

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

/* ============================================
   RESPONSIVE - TABLET (768px - 1024px)
   ============================================ */
@media (max-width: 1024px) {
    /* Header */
    .header {
        padding: 16px 20px;
    }

    .header h1 {
        font-size: 1.5rem;
    }

    /* Tabs */
    .tablink {
        padding: 14px 24px;
        font-size: 14px;
    }

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

    .card {
        padding: 20px;
    }

    /* Gas Controls - wrap more tightly */
    .gas-controls {
        gap: 10px;
        padding: 12px 16px;
    }

    .gas-controls .gas-item {
        padding: 6px 10px;
    }

    .gas-controls .gas-item label {
        font-size: 13px;
    }

    /* Date Time Row */
    .date-time-row {
        flex-wrap: wrap;
        gap: 12px;
        padding: 12px 16px;
    }

    .quick-presets {
        margin-left: 0;
    }

    /* Chart */
    .content-section {
        padding: 15px;
    }

    .chart-header {
        padding: 10px 16px;
    }

    .chart-content {
        padding: 15px;
    }

    .chart-actions {
        gap: 6px;
    }

    .chart-action-btn {
        padding: 5px 10px;
        font-size: 11px;
    }
}

/* ============================================
   RESPONSIVE - MOBILE (< 768px)
   ============================================ */
@media (max-width: 768px) {
    /* Header */
    .header {
        padding: 14px 16px;
    }

    .header h1 {
        font-size: 1.2rem;
    }

    /* Tabs */
    .tablink {
        padding: 12px 20px;
        font-size: 14px;
        flex: 1;
        text-align: center;
    }

    .tabcontent {
        height: calc(100% - 110px);
    }

    /* Cards */
    .container {
        padding: 0;
    }

    .grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .card {
        padding: 16px;
        border-radius: 8px;
    }

    .card:hover {
        transform: none;
    }

    .punto-nome {
        font-size: 1.1rem;
    }

    .gas-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 8px;
    }

    .gas-grid .gas-item {
        padding: 8px 4px;
    }

    .gas-label {
        font-size: 0.65rem;
    }

    .gas-value {
        font-size: 0.9rem;
    }

    /* Page-specific body padding override */
    body.page-punti-prelievo,
    body {
        padding: 16px 12px;
    }

    /* === HISTORY PAGE - COLLAPSIBLE FILTERS === */

    /* Show toggle button */
    .filter-toggle-btn {
        display: flex;
    }

    /* Filter panel as collapsible */
    .filter-panel {
        display: block;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .filter-panel.open {
        max-height: 500px;
    }

    /* Main container adjustments */
    .main-container {
        grid-template-rows: auto auto 1fr;
        overflow: hidden;
    }

    /* Gas Controls - vertical layout */
    .gas-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        padding: 12px 16px;
    }

    /* Mobile: gas-checkboxes becomes a grid */
    .gas-checkboxes {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 8px;
    }

    .gas-controls .gas-item {
        padding: 8px;
        justify-content: center;
    }

    .gas-controls .gas-item label {
        font-size: 12px;
    }

    .gas-controls .gas-item input[type="checkbox"] {
        width: 16px;
        height: 16px;
    }

    /* Filter controls full width */
    .filter-controls {
        margin-left: 0;
        width: 100%;
        justify-content: space-between;
    }

    .control-group {
        flex: 1;
    }

    .control-group select {
        width: 100%;
        min-width: unset;
    }

    /* Date Time Row - stacked */
    .date-time-row {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        padding: 12px 16px;
    }

    .datetime-group {
        width: 100%;
        justify-content: space-between;
    }

    .datetime-group label {
        min-width: 45px;
    }

    .datetime-group input[type="date"],
    .datetime-group input[type="time"] {
        flex: 1;
        min-width: 0;
    }

    /* Presets - full width, scrollable */
    .quick-presets {
        margin-left: 0;
        width: 100%;
        justify-content: space-between;
    }

    .preset-btn {
        flex: 1;
        text-align: center;
        padding: 8px 6px;
    }

    /* Action buttons - full width */
    .action-buttons {
        margin-left: 0;
        width: 100%;
    }

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

    /* Content Section */
    .content-section {
        padding: 12px;
        gap: 12px;
        overflow-y: auto;
    }

    /* Chart Header - stack on very small screens */
    .chart-header {
        flex-direction: column;
        gap: 10px;
        padding: 12px 16px;
        align-items: flex-start;
    }

    .chart-title {
        font-size: 14px;
    }

    .chart-actions {
        width: 100%;
        justify-content: space-between;
    }

    .chart-action-btn {
        flex: 1;
        text-align: center;
        padding: 8px 6px;
        font-size: 11px;
    }

    .chart-content {
        padding: 10px;
        min-height: 250px;
    }

    /* Fetch Info - compact */
    .fetch-info {
        padding: 10px 12px;
        font-size: 11px;
    }

    .fetch-info-row {
        flex-direction: column;
        gap: 2px;
        margin-bottom: 8px;
    }

    .fetch-label {
        min-width: unset;
        font-size: 10px;
    }

    .fetch-url {
        font-size: 10px;
    }

    /* Loading */
    .loading {
        padding: 40px 20px;
    }
}

/* ============================================
   RESPONSIVE - SMALL MOBILE (< 480px)
   ============================================ */
@media (max-width: 480px) {
    .header h1 {
        font-size: 1rem;
    }

    .tablink {
        padding: 10px 12px;
        font-size: 13px;
    }

    /* Cards even more compact */
    .card {
        padding: 12px;
    }

    .card-header {
        padding-bottom: 12px;
        margin-bottom: 12px;
    }

    .punto-nome {
        font-size: 1rem;
    }

    .stanza, .ultima-lettura {
        font-size: 0.7rem;
    }

    .gas-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 6px;
    }

    .gas-grid .gas-item {
        padding: 6px 2px;
    }

    .gas-label {
        font-size: 0.6rem;
    }

    .gas-value {
        font-size: 0.8rem;
    }

    /* History page */
    .gas-checkboxes {
        grid-template-columns: repeat(4, 1fr);
    }

    .gas-controls .gas-item {
        padding: 6px 4px;
    }

    .gas-controls .gas-item label {
        font-size: 11px;
        gap: 2px;
    }

    .preset-btn {
        font-size: 11px;
        padding: 6px 4px;
    }

    .btn {
        font-size: 12px;
        padding: 8px 12px;
    }

    .chart-action-btn {
        font-size: 10px;
        padding: 6px 4px;
    }
}