/* ============================================
   WhereToBreathe – Air Quality Activity Planner
   Main Stylesheet
   ============================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
    --primary-color: #4CAF50;
    --secondary-color: #8BC34A;
    --accent-color: #2E7D32;
    --light-color: #E8F5E9;
    --dark-color: #1B5E20;
    --warning-color: #FF9800;
    --danger-color: #F44336;
    --text-color: #333;
    --text-muted: #666;
    --white: #ffffff;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --transition: 0.3s ease;
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: #f0f4f0;
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

/* ---------- Layout ---------- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
}

/* ---------- Header ---------- */
header {
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    color: var(--white);
    padding: 24px 0;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    pointer-events: none;
}

header h1 {
    margin: 0;
    padding: 0 24px;
    display: flex;
    align-items: center;
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

header h1 svg {
    margin-right: 12px;
    flex-shrink: 0;
}

header .subtitle {
    padding: 4px 24px 0;
    opacity: 0.85;
    font-size: 0.95rem;
    font-weight: 400;
    margin-left: 36px;
}

/* ---------- Main Content ---------- */
.content {
    display: flex;
    flex-direction: column;
    background-color: var(--white);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

/* ---------- Map ---------- */
.map-container {
    height: 420px;
    position: relative;
    border-bottom: 3px solid var(--light-color);
}

.map {
    height: 100%;
    width: 100%;
    background-color: #e5f5e0;
    position: relative;
}

/* ---------- Weather Widget ---------- */
.weather-widget {
    position: absolute;
    background-color: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 16px;
    width: 220px;
    top: 16px;
    right: 16px;
    display: none;
    z-index: 1000;
    border-left: 4px solid var(--primary-color);
    backdrop-filter: blur(8px);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.weather-widget h3 {
    margin-top: 0;
    color: var(--dark-color);
    border-bottom: 1px solid var(--light-color);
    padding-bottom: 8px;
    margin-bottom: 10px;
    font-size: 1rem;
}

.weather-info {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.weather-icon {
    width: 40px;
    height: 40px;
    margin-right: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.weather-details p {
    margin: 4px 0;
}

.weather-temp {
    font-size: 1.3em;
    font-weight: 700;
    color: var(--dark-color);
}

.weather-stats p {
    margin: 4px 0;
    font-size: 0.9em;
    color: var(--text-muted);
}

/* ---------- Controls ---------- */
.controls {
    padding: 24px;
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
}

.calendar-container,
.sensitivity-container {
    flex: 1;
    min-width: 300px;
}

h2 {
    color: var(--dark-color);
    margin-top: 0;
    margin-bottom: 12px;
    font-size: 1.25rem;
    font-weight: 600;
}

/* ---------- Calendar ---------- */
.calendar {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.calendar th {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 10px;
    font-weight: 600;
    font-size: 0.9em;
}

.calendar td {
    padding: 10px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.95em;
}

.calendar td:hover {
    background-color: var(--light-color);
}

.calendar td.selected {
    background-color: var(--primary-color);
    color: var(--white);
    font-weight: 600;
    border-radius: var(--radius-sm);
}

.calendar td.today {
    font-weight: bold;
    border: 2px solid var(--secondary-color);
    border-radius: var(--radius-sm);
}

.calendar td.unavailable {
    color: #ccc;
    cursor: not-allowed;
}

/* Calendar navigation */
.calendar-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 5px;
}

.calendar-nav-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.calendar-nav-btn:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

.calendar-today-wrapper {
    text-align: center;
    margin-top: 8px;
}

.today-btn {
    background-color: var(--secondary-color);
    color: var(--white);
    border: none;
    border-radius: var(--radius-sm);
    padding: 3px 12px;
    cursor: pointer;
    font-size: 0.8em;
    font-weight: 600;
    transition: all var(--transition);
}

.today-btn:hover {
    background-color: var(--accent-color);
    transform: translateY(-1px);
}

/* ---------- Sensitivity Buttons ---------- */
.sensitivity-description {
    color: var(--text-muted);
    margin-bottom: 16px;
    font-size: 0.95em;
}

.sensitivity-buttons {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.sensitivity-btn {
    flex: 1;
    padding: 16px 12px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9em;
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.sensitivity-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0);
    transition: background var(--transition);
}

.sensitivity-btn:hover::after {
    background: rgba(255, 255, 255, 0.15);
}

.sensitivity-btn.low {
    background-color: #E8F5E9;
    color: var(--dark-color);
    border: 2px solid var(--primary-color);
}

.sensitivity-btn.moderate {
    background-color: #FFF8E1;
    color: #F57F17;
    border: 2px solid var(--warning-color);
}

.sensitivity-btn.high {
    background-color: #FFEBEE;
    color: #B71C1C;
    border: 2px solid var(--danger-color);
}

.sensitivity-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.sensitivity-btn.selected {
    transform: scale(1.04);
    box-shadow: var(--shadow-lg);
}

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

.sensitivity-btn.selected.moderate {
    background-color: var(--warning-color);
    color: var(--white);
}

.sensitivity-btn.selected.high {
    background-color: var(--danger-color);
    color: var(--white);
}

/* ---------- Results ---------- */
.results {
    padding: 20px;
    margin-top: 20px;
    border-radius: var(--radius-md);
    display: none;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.results.good {
    background-color: rgba(76, 175, 80, 0.12);
    border: 2px solid var(--primary-color);
}

.results.moderate {
    background-color: rgba(255, 152, 0, 0.12);
    border: 2px solid var(--warning-color);
}

.results.poor {
    background-color: rgba(244, 67, 54, 0.12);
    border: 2px solid var(--danger-color);
}

.result-title {
    margin-top: 0;
    display: flex;
    align-items: center;
    font-size: 1.15rem;
}

.result-title svg {
    margin-right: 10px;
    flex-shrink: 0;
}

#result-message {
    margin: 12px 0 8px;
    line-height: 1.7;
}

#result-details {
    color: var(--text-muted);
    font-size: 0.95em;
}

/* ---------- Loading Overlay ---------- */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.92);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.4s ease;
}

.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--light-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-text {
    margin-top: 16px;
    color: var(--dark-color);
    font-weight: 600;
    font-size: 0.95rem;
}

/* ---------- Footer ---------- */
footer {
    text-align: center;
    margin-top: 32px;
    padding: 20px;
    color: var(--text-muted);
    font-size: 0.85em;
}

footer a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color var(--transition);
}

footer a:hover {
    color: var(--dark-color);
    text-decoration: underline;
}

/* ---------- Leaflet Popup Customization ---------- */
.leaflet-popup-content-wrapper {
    border-radius: var(--radius-md) !important;
    box-shadow: var(--shadow-md) !important;
}

.leaflet-popup-content {
    margin: 12px 16px !important;
    font-family: var(--font-family) !important;
    line-height: 1.6 !important;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    .container {
        padding: 12px;
    }

    header h1 {
        font-size: 1.2rem;
    }

    header .subtitle {
        font-size: 0.85rem;
        margin-left: 0;
        padding-left: 24px;
    }

    .controls {
        flex-direction: column;
        padding: 16px;
    }

    .calendar-container,
    .sensitivity-container {
        min-width: unset;
    }

    .map-container {
        height: 300px;
    }

    .weather-widget {
        width: 170px;
        font-size: 0.88em;
        padding: 12px;
    }

    .sensitivity-buttons {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1rem;
    }

    .map-container {
        height: 250px;
    }
}