/********** Template CSS **********/


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

body {
  margin: 0;
  padding: 0;
}

:root {
    /* Darker blue palette with white accents */
    --primary: #0B3D91;    /* deep royal blue */
    --secondary: #1E88E5;  /* accent blue */
    --light: #F5F8FF;      /* near-white with blue tint */
    --dark: #0A1B3D;       /* deep navy */
}


/*** Spinner ***/
#spinner {
    opacity: 0;
    visibility: hidden;
    transition: opacity .5s ease-out, visibility 0s linear .5s;
    z-index: 99999;
}

#spinner.show {
    transition: opacity .5s ease-out, visibility 0s linear 0s;
    visibility: visible;
    opacity: 1;
}

.back-to-top {
    position: fixed;
    display: none;
    right: 45px;
    bottom: 45px;
    z-index: 99;
}


/*** Heading ***/
h1,
h2,
h3,
.fw-bold {
    font-weight: 700 !important;
}

h4,
h5,
h6,
.fw-medium {
    font-weight: 500 !important;
}


/*** Button ***/
.btn {
    font-weight: 500;
    transition: .5s;
}

.btn-square {
    width: 38px;
    height: 38px;
}

.btn-sm-square {
    width: 32px;
    height: 32px;
}

.btn-lg-square {
    width: 48px;
    height: 48px;
}

.btn-square,
.btn-sm-square,
.btn-lg-square {
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: normal;
    border-radius: 50px;
}


/*** Navbar ***/
.sticky-top {
    top: -150px;
    transition: .5s;
}

.navbar {
    padding: 11px 0 !important;
    height: 75px;
}

.navbar .navbar-nav .nav-link {
    margin-right: 35px;
    padding: 0;
    color: rgba(255, 255, 255, .7);
    outline: none;
}

.navbar .navbar-nav .nav-link:hover,
.navbar .navbar-nav .nav-link.active {
    color: rgba(255, 255, 255, 1);
}

.navbar .dropdown-toggle::after {
    border: none;
    content: "\f107";
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    vertical-align: middle;
    margin-left: 8px;
}

@media (max-width: 991.98px) {
    .navbar .navbar-nav {
        padding: 0 15px;
        background: var(--primary);
    }

    .navbar .navbar-nav .nav-link  {
        margin-right: 0;
        padding: 10px 0;
    }
}

@media (min-width: 992px) {
    .navbar .nav-item .dropdown-menu {
        display: block;
        border: none;
        margin-top: 0;
        top: 150%;
        opacity: 0;
        visibility: hidden;
        transition: .5s;
    }

    .navbar .nav-item:hover .dropdown-menu {
        top: 100%;
        visibility: visible;
        transition: .5s;
        opacity: 1;
    }
}


/*** Hero Header ***/
.hero-header {
    margin-top: -75px;
    background: url(../img/bg-hero.png) center center no-repeat;
    background-size: cover;
}

.hero-header .breadcrumb-item+.breadcrumb-item::before {
    color: var(--light);
}


/*** Section Title ***/
.section-title::before {
    position: absolute;
    content: "";
    width: 45px;
    height: 4px;
    bottom: 0;
    left: 0;
    background: var(--dark);
}

.section-title::after {
    position: absolute;
    content: "";
    width: 4px;
    height: 4px;
    bottom: 0;
    left: 50px;
    background: var(--dark);
}

.section-title.text-center::before {
    left: 50%;
    margin-left: -25px;
}

.section-title.text-center::after {
    left: 50%;
    margin-left: 25px;
}

.section-title h6::before,
.section-title h6::after {
    position: absolute;
    content: "";
    width: 10px;
    height: 10px;
    top: 2px;
    left: 0;
    background: rgba(33, 66, 177, .5);
}

.section-title h6::after {
    top: 5px;
    left: 3px;
}


/*** About ***/
.about-img {
    position: relative;
    overflow: hidden;
}

.about-img::after {
    position: absolute;
    content: "";
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background: url(../img/bg-about-img.png) top left no-repeat;
    background-size: contain;
}


/*** Service ***/
.service-item {
    position: relative;
    padding: 45px 30px;
    background: #FFFFFF;
    transition: .5s;
}

.service-item:hover {
    background: var(--primary);
}

.service-item .service-icon {
    margin: 0 auto 20px auto;
    width: 90px;
    height: 90px;
    color: var(--primary);
    background: var(--light);
    transition: .5s;
}

.service-item:hover .service-icon {
    background: #FFFFFF;
}

.service-item h5,
.service-item p {
    transition: .5s;
}

.service-item:hover h5,
.service-item:hover p {
    color: #FFFFFF;
}

.service-item a.btn {
    position: relative;
    display: flex;
    color: var(--primary);
    transition: .5s;
    z-index: 1;
}

.service-item:hover a.btn {
    color: var(--primary);
}

.service-item a.btn::before {
    position: absolute;
    content: "";
    width: 35px;
    height: 35px;
    top: 0;
    left: 0;
    border-radius: 35px;
    background: var(--light);
    transition: .5s;
    z-index: -1;
}

.service-item:hover a.btn::before {
    width: 100%;
    background: var(--light);
}


/*** Feature ***/
.feature {
    background: url(../img/bg-hero.png) center center no-repeat;
    background-size: cover;
}


/*** Newsletter ***/
.newsletter {
    background: url(../img/bg-hero.png) center center no-repeat;
    background-size: cover;
}

@media (min-width: 992px) {
    .newsletter .container {
        max-width: 100% !important;
    }

    .newsletter .newsletter-text  {
        padding-right: calc(((100% - 960px) / 2) + .75rem);
    }
}

@media (min-width: 1200px) {
    .newsletter .newsletter-text  {
        padding-right: calc(((100% - 1140px) / 2) + .75rem);
    }
}

@media (min-width: 1400px) {
    .newsletter .newsletter-text  {
        padding-right: calc(((100% - 1320px) / 2) + .75rem);
    }
}


/*** Case Study ***/
.case-item img {
    transition: .5s;
}
  
.case-item:hover img {
    transform: scale(1.2);
}
  
.case-overlay {
    position: absolute;
    padding: 30px;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-end;
    background: linear-gradient(rgba(20, 24, 62, 0), var(--dark));
    z-index: 1;
}

.case-overlay small {
    display: inline-block;
    padding: 3px 15px;
    color: #FFFFFF;
    background: rgba(20, 24, 62, .7);
    border-radius: 25px;
    margin-bottom: 15px;
}

.case-overlay span.btn:hover {
    color: var(--primary);
    background: #FFFFFF;
    border-color: #FFFFFF;
}


/*** FAQs ***/
.accordion .accordion-item {
    border: none;
    margin-bottom: 15px;
}

.accordion .accordion-button {
    background: var(--light);
    border-radius: 2px;
}

.accordion .accordion-button:not(.collapsed) {
    color: #FFFFFF;
    background: var(--primary);
    box-shadow: none;
}

.accordion .accordion-button:not(.collapsed)::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23fff'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

.accordion .accordion-body {
    padding: 15px 0 0 0;
}


/*** Testimonial ***/
.testimonial-carousel {
    position: relative;
}

.testimonial-carousel .owl-nav {
    position: absolute;
    width: 40px;
    height: 100%;
    top: calc(50% - 50px);
    left: -21px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.testimonial-carousel .owl-nav .owl-prev,
.testimonial-carousel .owl-nav .owl-next {
    margin: 5px 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    background: #FFFFFF;
    border: 1px solid var(--primary);
    border-radius: 40px;
    font-size: 18px;
    transition: .5s;
}

.testimonial-carousel .owl-nav .owl-prev:hover,
.testimonial-carousel .owl-nav .owl-next:hover {
    background: var(--primary);
    color: #FFFFFF;
}

.testimonial-carousel .owl-dots {
    margin-top: 35px;
    margin-left: 3rem;
}

.testimonial-carousel .owl-dot {
    position: relative;
    display: inline-block;
    margin-right: 10px;
    width: 15px;
    height: 15px;
    background: #FFFFFF;
    border: 1px solid var(--primary);
    border-radius: 15px;
    transition: .5s;
}

.testimonial-carousel .owl-dot.active {
    width: 30px;
    background: var(--primary);
}


/*** Team ***/
.team-item {
    transition: .5s;
    border: 1px solid transparent;
    transition: .5s;
}

.team-item:hover {

    border-color: var(--primary);
}


/*** Footer ***/
.footer {
    background: url(../img/footer.png) center center no-repeat;
    background-size: contain;
}

.footer .btn.btn-social {
    margin-right: 5px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,.5);
    border: 1px solid rgba(256, 256, 256, .1);
    border-radius: 40px;
    transition: .3s;
}

.footer .btn.btn-social:hover {
    color: var(--primary);
}

.footer .btn.btn-link {
    display: block;
    margin-bottom: 10px;
    padding: 0;
    text-align: left;
    color: rgba(255,255,255,.5);
    font-weight: normal;
    transition: .3s;
}

.footer .btn.btn-link:hover {
    color: #FFFFFF;
}

.footer .btn.btn-link::before {
    position: relative;
    content: "\f105";
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    margin-right: 10px;
}

.footer .btn.btn-link:hover {
    letter-spacing: 1px;
    box-shadow: none;
}

.footer .copyright {
    padding: 25px 0;
    font-size: 14px;
    border-top: 1px solid rgba(256, 256, 256, .1);
}

.footer .copyright a {
    color: rgba(255,255,255,.5);
}

.footer .copyright a:hover {
    color: #FFFFFF;
}

.footer .footer-menu a {
    margin-right: 15px;
    padding-right: 15px;
    border-right: 1px solid rgba(255, 255, 255, .1);
}

.footer .footer-menu a:last-child {
    margin-right: 0;
    padding-right: 0;
    border-right: none;
}
.aqi-scale {
    display: flex;
    width: 100%;
    height: 30px;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 5px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
.aqi-segment {
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: black;
    font-weight: 600;
    font-size: 0.75rem;
    text-shadow: 0 0 3px rgba(255, 255, 255, 0.7);
    white-space: nowrap;
}
.aqi-segment-good { background-color: #00e400; width: 10%; /* 0-50 out of 500 */ }
.aqi-segment-moderate { background-color: #ffcc00; width: 10%; /* 51-100 out of 500 */ }
.aqi-segment-unhealthy-sensitive { background-color: #ff7e00; width: 10%; /* 101-150 out of 500 */ }
.aqi-segment-unhealthy { background-color: #ff0000; width: 10%; /* 151-200 out of 500 */ }
.aqi-segment-very-unhealthy { background-color: #990099; width: 20%; /* 201-300 out of 500 */ color: white; text-shadow: 0 0 3px rgba(0, 0, 0, 0.7); }
.aqi-segment-hazardous { background-color: #731313; width: 40%; /* 301-500 out of 500 */ color: white; text-shadow: 0 0 3px rgba(0, 0, 0, 0.7); }
.aqi-labels {
    display: flex;
    width: 100%;
    justify-content: space-between;
    font-size: 0.8rem;
    margin-bottom: 20px;
}
.aqi-label-end {
    font-weight: bold;
}
html, body { 
  height: 100%; 
  margin: 0; 
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
#map { 
  width: 100vw; 
  height: 100vh; 
  position: absolute;
}
#info {
  position: absolute;
  top: 20px;
  left: 20px;
  background: #fff;
  padding: 15px 20px;
  border-radius: 8px;
  box-shadow: 0 4px 12px #0004;
  max-width: 300px;
  width: 260px;
  z-index: 1000;
  max-height: 95vh;
  overflow-y: hidden;
  display: flex;
  flex-direction: column;
}

/* Global City Search Input */
#city-search {
    width: 100%;
    padding: 8px;
    box-sizing: border-box;
    border: 1px solid #ccc;
    border-radius: 4px;
    margin-bottom: 10px;
}
/* Global Search Results */
#search-results {
    max-height: 150px;
    overflow-y: auto;
    border-bottom: 1px solid #eee;
    margin-bottom: 10px;
    padding-bottom: 5px;
}
.city-result {
    padding: 5px;
    cursor: pointer;
    border-bottom: 1px solid #f0f0f0;
    font-size: 0.9em;
}
.city-result:hover {
    background-color: #f0f8ff;
}

/* Local Data Filter Input */
#data-filter-input {
    width: 100%;
    padding: 5px;
    box-sizing: border-box;
    border: 1px solid #ccc;
    border-radius: 4px;
    margin: 5px 0 10px 0;
    display: none;
}
#pollution-list-container {
    flex-grow: 1;
    overflow-y: auto;
    padding-right: 5px;
}

/* Date Control Bar Style */
#date-control {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: #fff;
  padding: 15px 25px;
  border-radius: 8px;
  box-shadow: 0 4px 12px #0004;
  width: 80%;
  max-width: 600px;
  z-index: 1000;
  text-align: center;
}
#year-slider {
  width: 100%;
  margin: 10px 0 0 0;
}
#current-year {
  font-weight: 700;
  font-size: 1.2em;
  color: #007bff;
}

/* Pollution Entry Styles (Aesthetic) */
b { font-weight: 600; }
.pollution-entry {
  margin: 10px 0;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 6px;
  background-color: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
.pollution-header {
  font-weight: 700;
  color: #007bff;
  margin-bottom: 5px;
  border-bottom: 1px solid #eee;
  padding-bottom: 5px;
}
/* Adjusted grid: 2 columns, but each metric takes up 2 rows for vertical info */
.pollution-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 5px 10px;
  font-size: 0.9em;
}
/* Style for the container of a single metric */
.metric-container {
    display: flex;
    flex-direction: column; /* Stack label, value, and rec vertically */
    padding: 5px 0;
}
.metric-label {
    font-weight: 500;
    margin-bottom: 2px;
    color: #333;
}
.pm-value {
    font-weight: 700;
    font-size: 1.1em;
    line-height: 1.1;
}
.recommendation {
    font-size: 0.8em;
    color: #666;
    line-height: 1.1;
}
.low { color: #28a745; }
.medium { color: #ffc107; }
.high { color: #dc3545; }