/**
 * IoT環境監視システム - メインスタイルシート
 */

/* =====================================================
   CSS Variables (カスタムプロパティ)
   ===================================================== */
:root {
    /* Color Palette */
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-primary-light: #60a5fa;

    --color-success: #22c55e;
    --color-warning: #eab308;
    --color-danger: #ef4444;
    --color-info: #06b6d4;

    /* Threshold Colors */
    --color-level-none: #3b82f6;
    --color-level-1: #eab308;
    --color-level-2: #f97316;
    --color-level-3: #ef4444;
    --color-inactive: #9ca3af;

    /* Neutral Colors */
    --color-bg: #f8fafc;
    --color-bg-card: #ffffff;
    --color-bg-dark: #1e293b;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-border: #e2e8f0;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
}

/* =====================================================
   Reset & Base Styles
   ===================================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

img {
    max-width: 100%;
    height: auto;
}

/* =====================================================
   Typography
   ===================================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.3;
}

h1 {
    font-size: 2rem;
}

h2 {
    font-size: 1.5rem;
}

h3 {
    font-size: 1.25rem;
}

h4 {
    font-size: 1.125rem;
}

.text-muted {
    color: var(--color-text-muted);
}

.text-center {
    text-align: center;
}

.text-sm {
    font-size: 0.875rem;
}

.text-xs {
    font-size: 0.75rem;
}

/* =====================================================
   Layout
   ===================================================== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-center {
    justify-content: center;
}

.gap-sm {
    gap: var(--spacing-sm);
}

.gap-md {
    gap: var(--spacing-md);
}

.gap-lg {
    gap: var(--spacing-lg);
}

/* =====================================================
   Header
   ===================================================== */
.header {
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, #334155 100%);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
}

.header-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    max-width: 1280px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    flex: 1;
    justify-content: space-between;
}

/* View Toggle wrapper for left side */
.nav-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* Right side nav items */
.nav-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

/* View Toggle (Map/List) */
.view-toggle {
    display: flex;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 2px;
}

.view-toggle-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.view-toggle-btn.active {
    background: white;
    color: var(--color-bg-dark);
}

/* =====================================================
   Buttons
   ===================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

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

.btn-secondary {
    background: var(--color-border);
    color: var(--color-text);
}

.btn-secondary:hover {
    background: #d1d5db;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-google {
    background: white;
    color: #333;
    border: 1px solid var(--color-border);
    font-weight: 500;
}

.btn-google:hover {
    background: #f8fafc;
    box-shadow: var(--shadow-md);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

/* =====================================================
   Cards
   ===================================================== */
.card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-normal);
}

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

.card-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-body {
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    background: var(--color-bg);
}

/* Sensor Card */
.sensor-card {
    cursor: pointer;
}

.sensor-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.sensor-status {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.sensor-status.none {
    background: var(--color-success);
}

.sensor-status.level-none {
    background: var(--color-success);
}

.sensor-status.level-1 {
    background: var(--color-level-1);
}

.sensor-status.level-2 {
    background: var(--color-level-2);
}

.sensor-status.level-3 {
    background: var(--color-level-3);
}

.sensor-status.inactive {
    background: var(--color-inactive);
}

.sensor-info h3 {
    font-size: 1rem;
    margin-bottom: 2px;
}

.sensor-location {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.sensor-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
}

.sensor-value .unit {
    font-size: 1rem;
    font-weight: 400;
    color: var(--color-text-muted);
}

.sensor-mini-chart {
    height: 60px;
    margin-top: var(--spacing-md);
}

/* =====================================================
   Map
   ===================================================== */
.map-container {
    height: calc(100vh - 64px);
    width: 100%;
    position: relative;
}

#map {
    height: 100%;
    width: 100%;
}

/* Leaflet Popup Custom Styles */
.leaflet-popup-content-wrapper {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 0;
}

.leaflet-popup-content {
    margin: 0;
    min-width: 280px;
}

.popup-content {
    padding: var(--spacing-lg);
}

.popup-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.popup-title {
    font-size: 1rem;
    font-weight: 600;
}

.popup-location {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.popup-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.popup-chart {
    height: 80px;
    margin-bottom: var(--spacing-md);
}

.popup-footer {
    text-align: center;
}

.popup-footer .btn-primary {
    background: var(--color-primary);
    color: white;
    border: none;
}

.popup-footer .btn-primary:hover {
    background: var(--color-primary-dark);
    color: white;
}

/* =====================================================
   Forms
   ===================================================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.form-input {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: white;
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Select dropdown arrow spacing */
select.form-input {
    padding-right: 3rem;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

.form-input::placeholder {
    color: var(--color-text-muted);
}

.form-error {
    color: var(--color-danger);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

/* =====================================================
   Login Page
   ===================================================== */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    padding: var(--spacing-lg);
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xl);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.auth-header h1 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.auth-divider {
    display: flex;
    align-items: center;
    margin: var(--spacing-lg) 0;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.auth-divider span {
    padding: 0 var(--spacing-md);
}

.auth-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* Auth page tab styling fix */
.auth-card .view-toggle {
    background: var(--color-bg);
}

.auth-card .view-toggle-btn {
    color: var(--color-text-muted);
}

.auth-card .view-toggle-btn:hover {
    color: var(--color-text);
}

.auth-card .view-toggle-btn.active {
    background: var(--color-primary);
    color: white;
}

/* =====================================================
   Graph Page
   ===================================================== */
.graph-page {
    padding: var(--spacing-lg);
}

.graph-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.graph-controls {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.period-selector {
    display: flex;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: 2px;
}

.period-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background: transparent;
    color: var(--color-text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.period-btn:hover {
    color: var(--color-text);
}

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

.date-range {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.date-input {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
}

/* Main Chart */
.chart-container {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.chart-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.chart-legend {
    display: flex;
    gap: var(--spacing-lg);
    font-size: 0.875rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.legend-color {
    width: 12px;
    height: 3px;
    border-radius: 2px;
}

.legend-color.dashed {
    border-top: 2px dashed;
    background: none;
    height: 0;
}

#mainChart {
    height: 400px;
}

/* Mini Timeline Navigator */
.timeline-navigator {
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
    position: relative;
}

#miniTimeline {
    height: 60px;
}

/* =====================================================
   Grid
   ===================================================== */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

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

@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {

    .grid-4,
    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
    }
}

/* =====================================================
   Utilities
   ===================================================== */
.hidden {
    display: none !important;
}

.mt-sm {
    margin-top: var(--spacing-sm);
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mb-md {
    margin-bottom: var(--spacing-md);
}

.p-md {
    padding: var(--spacing-md);
}

.p-lg {
    padding: var(--spacing-lg);
}

/* =====================================================
   Responsive
   ===================================================== */
@media (max-width: 768px) {
    .header {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .logo {
        font-size: 1rem;
    }

    .nav {
        gap: var(--spacing-sm);
    }

    .graph-header {
        flex-direction: column;
        align-items: stretch;
    }

    .graph-controls {
        flex-direction: column;
    }

    .period-selector {
        overflow-x: auto;
    }
}

/* Leaflet Popup Customization (Large Close Button) */
.leaflet-popup-content-wrapper {
    border-radius: 12px;
}

.leaflet-popup-content {
    margin: 0;
    width: 280px !important;
}

.leaflet-popup-close-button {
    width: 32px !important;
    height: 32px !important;
    font-size: 24px !important;
    line-height: 32px !important;
    color: #94a3b8 !important;
    top: 4px !important;
    right: 4px !important;
    border-radius: 50%;
    display: flex !important;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    text-decoration: none !important;
}

.leaflet-popup-close-button:hover {
    color: #475569 !important;
    background-color: #f1f5f9;
}

.leaflet-popup-tip {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1) !important;
}