:root {
    --bg-light: #f0f6f4;
    --bg-dark: #0f191d;
    --card-light: rgba(255, 255, 255, 0.85);
    --card-dark: rgba(19, 34, 39, 0.82);
    --accent: #5da399;
    --accent-strong: #2a6f64;
    --text-color: #0e1b20;
    --text-muted: #47606a;
    --border-radius: 28px;
    --shadow: 0 20px 45px rgba(10, 35, 41, 0.15);
}

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

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Outfit", sans-serif;
    background: radial-gradient(circle at top, rgba(142, 209, 206, 0.4), transparent 55%),
        linear-gradient(180deg, rgba(224, 243, 241, 0.9), rgba(199, 225, 222, 0.8));
    color: var(--text-color);
    min-height: 100vh;
}

@media (prefers-color-scheme: dark) {
    body {
        background: radial-gradient(circle at top, rgba(38, 77, 85, 0.55), transparent 55%),
            linear-gradient(180deg, rgba(9, 21, 25, 0.95), rgba(10, 26, 32, 0.92));
        color: #e9f5f3;
    }
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image: url("images/le_fond_pc.png");
    background-size: cover;
    background-position: center;
    opacity: 0.22;
    pointer-events: none;
    mix-blend-mode: screen;
    transition: opacity 0.4s ease;
}

@media (prefers-color-scheme: dark) {
    body::before {
        background-image: url("images/le_fond_pc_night.png");
        mix-blend-mode: lighten;
        opacity: 0.35;
    }
}

.app {
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px 20px 64px;
}

.site-header {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    align-items: center;
    gap: 16px;
    padding: 24px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
    background: var(--card-light);
}

@media (prefers-color-scheme: dark) {
    .site-header {
        background: var(--card-dark);
    }
}

.brand {
    grid-column: span 6;
}

.brand h1 {
    margin: 0;
    font-size: clamp(1.5rem, 2vw + 1rem, 2.4rem);
    font-weight: 600;
    color: var(--accent-strong);
}

@media (prefers-color-scheme: dark) {
    .brand h1 {
        color: #8adcd0;
    }
}

.brand span {
    font-weight: 300;
}

.weather-date {
    margin: 6px 0 0;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.menu-toggle {
    grid-column: span 1;
    display: none;
    border: none;
    background: none;
    font-size: 1.75rem;
    color: inherit;
    cursor: pointer;
}

.main-nav {
    grid-column: span 3;
    display: flex;
    gap: 20px;
    justify-content: center;
}

.main-nav .nav-link {
    color: inherit;
    text-decoration: none;
    font-weight: 500;
    padding-bottom: 4px;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s ease, color 0.2s ease;
}

.main-nav .nav-link:hover,
.main-nav .nav-link:focus-visible {
    border-color: var(--accent);
    color: var(--accent-strong);
}

.header-actions {
    grid-column: span 3;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    align-items: center;
}

.connection-pill {
    background: rgba(93, 163, 153, 0.18);
    padding: 8px 18px;
    border-radius: 999px;
    font-weight: 600;
    color: var(--accent-strong);
    min-width: 140px;
    text-align: center;
}

.icon-button {
    border: none;
    background: rgba(93, 163, 153, 0.18);
    color: var(--accent-strong);
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.2s ease;
}

.icon-button.refreshing svg {
    animation: spin 1s linear;
}

.icon-button:hover,
.icon-button:focus-visible {
    transform: translateY(-2px);
    background: rgba(93, 163, 153, 0.32);
}

.dashboard {
    margin-top: 32px;
    display: grid;
    gap: 24px;
}

.card {
    background: var(--card-light);
    border-radius: var(--border-radius);
    padding: 28px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
    position: relative;
    overflow: hidden;
}

@media (prefers-color-scheme: dark) {
    .card {
        background: var(--card-dark);
        color: #e8f4f2;
    }
}

.overview-card {
    display: grid;
    gap: 28px;
}

.overview-header {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 18px;
}

.temperature-icon {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    display: grid;
    place-items: center;
    background: rgba(93, 163, 153, 0.18);
    color: var(--accent-strong);
}

.temperature {
    margin: 0;
    font-size: clamp(3rem, 6vw, 4.5rem);
    font-weight: 600;
}

.location {
    margin: 6px 0 0;
    font-size: 1.1rem;
    color: var(--text-muted);
}

.flag {
    width: 72px;
    height: 72px;
    border-radius: 18px;
    object-fit: cover;
    box-shadow: 0 10px 25px rgba(20, 60, 68, 0.15);
}

.datetime-picker {
    display: grid;
    gap: 12px;
}

#datetime-btn {
    justify-self: flex-start;
    padding: 12px 24px;
    border-radius: 999px;
    border: 1px solid rgba(93, 163, 153, 0.35);
    background: transparent;
    color: inherit;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
}

#datetime-btn:hover,
#datetime-btn:focus-visible {
    background: rgba(93, 163, 153, 0.15);
    transform: translateY(-1px);
}

#datetime-input {
    max-width: 260px;
    padding: 12px 18px;
    border-radius: 16px;
    border: 1px solid rgba(93, 163, 153, 0.35);
    font: inherit;
    display: none;
}

#datetime-input:focus-visible {
    outline: 2px solid rgba(93, 163, 153, 0.5);
    outline-offset: 2px;
}

.error-message {
    margin: 0;
    font-size: 0.9rem;
    color: #c94343;
    display: none;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.stat-card {
    display: grid;
    gap: 16px;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 14px;
}

.card-header .icon {
    width: 52px;
    height: 52px;
    display: grid;
    place-items: center;
    border-radius: 14px;
    background: rgba(93, 163, 153, 0.18);
    color: var(--accent-strong);
}

.card-title {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 600;
}

.stat {
    margin: 0;
    font-size: 2rem;
    font-weight: 600;
}

.link-button {
    display: inline-flex;
    gap: 6px;
    align-items: center;
    border: none;
    background: none;
    color: var(--accent-strong);
    font-weight: 600;
    cursor: pointer;
    padding: 4px 0;
}

.link-button::after {
    content: "→";
    font-size: 0.9rem;
    transition: transform 0.2s ease;
}

.link-button:hover::after,
.link-button:focus-visible::after {
    transform: translateX(2px);
}

.pollution-card .progress-bar,
.overlay-pollution .progress-bar {
    position: relative;
    height: 12px;
    border-radius: 999px;
    background: linear-gradient(90deg, #8fb7a8 0%, #a6b880 50%, #c5807e 100%);
    overflow: hidden;
}

.progress-level {
    position: absolute;
    height: 100%;
    left: 0;
    top: 0;
    background: rgba(255, 255, 255, 0.9);
    width: 0%;
    transition: width 0.4s ease;
}

.pollution-card .progress-level {
    background: rgba(14, 27, 32, 0.25);
}

.arrow {
    position: absolute;
    top: -12px;
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 12px solid var(--accent-strong);
    transform: translateX(-50%);
}

.pollution-card .arrow {
    border-bottom-color: var(--accent-strong);
}

.pollution-card {
    --pollution-color: var(--accent-strong);
}

.pollution-card .card-header .icon,
.pollution-card .link-button {
    color: var(--pollution-color);
}

.pollution-card .card-header .icon {
    background: color-mix(in srgb, var(--pollution-color) 18%, transparent);
}

.pollution-card.level-good {
    --pollution-color: #2f7a66;
}

.pollution-card.level-moderate {
    --pollution-color: #8c7c2a;
}

.pollution-card.level-poor {
    --pollution-color: #a04c3d;
}

.pollution-card.level-severe {
    --pollution-color: #8c2433;
}

.pollution-unit {
    font-size: 0.9rem;
    opacity: 0.7;
    margin-left: 4px;
}

.map-card {
    display: grid;
    gap: 18px;
}

.map {
    border-radius: 24px;
    height: 360px;
    overflow: hidden;
}

.map .leaflet-control-container {
    font-family: inherit;
}

.site-footer {
    margin-top: 40px;
    text-align: center;
}

.footer-link {
    color: inherit;
    text-decoration: none;
    font-weight: 500;
}

.footer-link:hover,
.footer-link:focus-visible {
    text-decoration: underline;
}

@media (max-width: 900px) {
    .site-header {
        grid-template-columns: repeat(6, 1fr);
        row-gap: 12px;
    }

    .brand {
        grid-column: span 6;
    }

    .menu-toggle {
        display: block;
        grid-column: span 1;
        justify-self: end;
    }

    .main-nav {
        grid-column: span 6;
        display: none;
        flex-direction: column;
        align-items: center;
        padding: 12px 0 4px;
        gap: 12px;
        border-top: 1px solid rgba(93, 163, 153, 0.2);
    }

    .main-nav.mobile-menu-open {
        display: flex;
    }

    .header-actions {
        grid-column: span 6;
        justify-content: flex-start;
    }
}

@media (prefers-color-scheme: dark) {
    .connection-pill,
    .icon-button,
    .card-header .icon,
    .temperature-icon {
        background: rgba(90, 164, 153, 0.16);
        color: #8adcd0;
    }

    .link-button {
        color: #8adcd0;
    }

    .location,
    .weather-date {
        color: rgba(233, 245, 243, 0.75);
    }
}

/* Settings modal */
.settingsModal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(10, 25, 31, 0.45);
    backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.settingsModalcontent {
    position: relative;
    width: min(420px, calc(100% - 48px));
    padding: 32px 36px;
    border-radius: 32px;
    background: var(--card-light);
    box-shadow: 0 24px 40px rgba(8, 26, 33, 0.25);
    text-align: center;
}

@media (prefers-color-scheme: dark) {
    .settingsModalcontent {
        background: var(--card-dark);
    }
}

.modal-background-settings {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(224, 255, 216, 0.45), rgba(164, 219, 210, 0.3));
    z-index: -2;
}

.modal-title-settings {
    font-size: 1.4rem;
    margin-bottom: 18px;
}

.modal-black-bg-settings {
    display: none;
}

.languetext {
    margin: 18px 0 12px;
    font-weight: 600;
}

.lang-switcher-container {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.lang-switcher-button {
    border: none;
    background: rgba(93, 163, 153, 0.18);
    border-radius: 999px;
    padding: 10px 18px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.flag-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}

.lang-dropdown {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.85);
    box-shadow: var(--shadow);
}

@media (prefers-color-scheme: dark) {
    .lang-dropdown {
        background: rgba(19, 34, 39, 0.85);
    }
}

.lang-dropdown.hidden {
    display: none;
}

.lang-item {
    color: inherit;
    text-decoration: none;
    font-weight: 500;
}

/* Pollution modal */
.overlay-pollution {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(10, 25, 31, 0.55);
    backdrop-filter: blur(6px);
    align-items: center;
    justify-content: center;
    z-index: 1100;
}

.modal-content-pollution {
    position: relative;
    width: min(520px, calc(100% - 56px));
    padding: 36px;
    border-radius: 32px;
    background: var(--card-light);
    box-shadow: 0 28px 50px rgba(6, 20, 26, 0.3);
}

@media (prefers-color-scheme: dark) {
    .modal-content-pollution {
        background: var(--card-dark);
    }
}

.modal-background-pollution {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(225, 255, 173, 0.35), rgba(234, 255, 202, 0.4));
    z-index: -2;
}

.modal-black-bg-pollution {
    display: none;
}

.modal-title-pollution {
    font-size: 1.4rem;
    margin-bottom: 12px;
    font-weight: 600;
    text-align: center;
}

.modal-dropdown-pollution {
    text-align: center;
    font-size: 1.2rem;
    margin-bottom: 28px;
}

.overlay-pollution .progress-bar {
    height: 16px;
    border-radius: 999px;
}

.overlay-pollution .progress-level {
    background: rgba(14, 27, 32, 0.25);
}

.overlay-pollution .arrow {
    border-bottom-color: rgba(255, 255, 255, 0.9);
}

/* UV modal (existing styles retained) */
.uvModal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(10, 25, 31, 0.55);
    backdrop-filter: blur(6px);
    align-items: center;
    justify-content: center;
    z-index: 1100;
}

.ground1uvModal {
    position: relative;
    width: min(640px, calc(100% - 56px));
    min-height: 420px;
    border-radius: 36px;
    padding: 32px;
    background: linear-gradient(180deg, rgba(225, 255, 173, 0.85), rgba(234, 255, 202, 0.75));
    color: var(--text-color);
    overflow: hidden;
}

.groun2duvModal {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: rgba(255, 255, 255, 0.4);
    z-index: -1;
}

[class^="title"] {
    cursor: pointer;
    font-weight: 600;
    margin-bottom: 6px;
}

.content {
    display: none;
    background: rgba(255, 255, 255, 0.55);
    padding: 16px 18px;
    border-radius: 20px;
    margin-top: 12px;
    font-size: 0.95rem;
}

.content.active {
    display: block;
}

.hidden {
    display: none !important;
}

@media (max-width: 600px) {
    .app {
        padding: 24px 16px 48px;
    }

    .card {
        padding: 22px;
    }

    .overview-header {
        grid-template-columns: auto 1fr;
    }

    .overview-header .flag {
        grid-column: 1 / -1;
        justify-self: flex-start;
    }

    .map {
        height: 280px;
    }

    .connection-pill {
        min-width: 0;
    }
}