/* Base page: plein ecran, sans scroll, fond noir pour masquer les bords des medias. */
html, body {
    margin: 0;
    height: 100%;
    overflow: hidden;
    font-family: Arial, sans-serif;
    background: black;
}

/* Variables UI partagees par les panneaux, boutons et effets de survol. */
:root {
    --ui-bg-light: rgba(255,255,255,0.15);
    --ui-bg-dark: rgba(0,0,0,0.5);
    --ui-bg-hover: rgba(255,255,255,0.4);
    --ui-text: white;
    --ui-radius: 12px;
    --transition-fast: 0.2s ease;
    --ui-accent: #3b82f6;
}

/* Logo fixe en haut a gauche, au-dessus de tous les modes visuels. */
.header .logo-link {
    display: block;
    pointer-events: auto;
}

.header .logo {
    display: block;
    height: auto;
    max-height: 20px;
}

.main {
    z-index: 2;
}

/* Icones Material: taille et transition communes. */
.material-symbols-outlined {
    font-size: 24px;
    color: var(--ui-text);
    opacity: 0.7;
    transition: var(--transition-fast);
}

/* Zones plein ecran principales: viewer timeline et comparaison cote-a-cote. */
#viewer,
.compare-container {
    position: fixed;
    inset: 0;
    overflow: hidden;
}

#viewer {
    touch-action: none;
}
/* Boutons lateraux timeline: chevrons compacts places dans les bandes floutees. */
#viewer .timeline-edge-btn {
    position: fixed;
    top: 50%;
    z-index: 24;
    width: 68px;
    height: 204px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 0;
    padding: 0;
    background: transparent;
    color: rgba(255,255,255,0.7);
    cursor: pointer;
    transform: translateY(-50%);
    transition: color 0.16s ease, opacity 0.16s ease, transform 0.16s ease, filter 0.16s ease;
}

#viewer .timeline-edge-btn:hover,
#viewer .timeline-edge-btn:focus-visible {
    background: transparent;
    color: rgba(255,255,255,1);
    opacity: 1;
    filter: drop-shadow(0 3px 10px rgba(0,0,0,0.8));
    transform: translateY(-50%) scale(1.08);
}

#viewer .timeline-edge-btn span {
    font-size: 54px;
    line-height: 1;
    text-shadow: 0 2px 10px rgba(0,0,0,0.65);
}

#viewer .timeline-edge-prev {
    left: 18px;
    right: auto;
}

#viewer .timeline-edge-next {
    right: 18px;
    left: auto;
}

body.compare-mode #viewer .timeline-edge-btn,
body.slider-mode #viewer .timeline-edge-btn,
#viewer.is-zoomed .timeline-edge-btn {
    display: none;
}

/* Images principales en contain: image complete visible avec fond floute derriere. */
.viewer-image,
.compare-image img.main,
#viewer img.main {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    max-width: none;
    max-height: none;
    object-fit: contain;
}

/* Fond floute et agrandi pour compenser les formats qui ne remplissent pas l ecran. */
.image-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: blur(12px) brightness(0.9) saturate(0.9);
    transform: scale(1.1);
    z-index: 1;
}

#viewer img.main {
    z-index: 2;
    transform-origin: center center;
    cursor: default;
    user-select: none;
    will-change: transform;
}

#viewer.is-zoomed img.main {
    cursor: grab;
}

#viewer.is-panning img.main {
    cursor: grabbing;
}
body.fullscreen-active #viewer img.main,
body.fullscreen-active .compare-container .compare-image img.main,
body.fullscreen-active.slider-mode .compare-slider-container .base img.main,
:fullscreen #viewer img.main,
:fullscreen .compare-container .compare-image img.main,
:fullscreen .slider-mode .compare-slider-container .base img.main {
    width: 100%;
    height: 100%;
    max-width: none;
    max-height: none;
    object-fit: contain;
}

body.fullscreen-active.slider-mode .compare-slider-container .overlay img.main,
:fullscreen .slider-mode .compare-slider-container .overlay img.main {
    width: 100vw;
    height: 100vh;
    max-width: none;
    max-height: none;
    object-fit: contain;
}
/* Badge discret affichant la date et l heure de l image visible. */
.image-timestamp {
    position: absolute;
    top: 18px;
    right: 18px;
    z-index: 50;
    min-height: 30px;
    box-sizing: border-box;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(0,0,0,0.45);
    color: white;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.02em;
    line-height: 1;
    text-shadow: 0 1px 2px rgba(0,0,0,0.45);
    pointer-events: none;
    backdrop-filter: blur(8px);
}

.header {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 35;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(0,0,0,0.45);
    color: white;
    text-shadow: 0 1px 2px rgba(0,0,0,0.45);
    pointer-events: none;
    backdrop-filter: blur(8px);
}

/* Bouton flottant qui ouvre/ferme le panneau de controle principal. */
.top-menu {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 40;
    transition: opacity 0.2s ease;
}

.menu-container {
    display: flex;
    gap: 5px;
    padding: 6px;
    background: var(--ui-bg-light);
    backdrop-filter: blur(12px);
    border-radius: 20px;
}

.fullscreen-exit-btn {
    display: none;
}

body.fullscreen-active .fullscreen-exit-btn,
:fullscreen .fullscreen-exit-btn {
    display: inline-flex;
}
.menu-btn {
    padding: 8px 16px;
    border-radius: 15px;
    border: none;
    cursor: pointer;
    background: transparent;
    color: var(--ui-text);
    font-size: 14px;
    transition: var(--transition-fast);
}

.menu-btn.active {
    background: var(--ui-accent);
}

.menu-btn:hover {
    background: rgba(255,255,255,0.28);
    transform: translateY(-1px) scale(1.03);
    box-shadow: 0 8px 18px rgba(0,0,0,0.22);
}

/* Panneau flottant contenant timeline, comparaison, slider et diaporama. */
.timeline-container {
    position: absolute;
    bottom: 30px;
    width: 100%;
    display: flex;
    justify-content: center;
    z-index: 60;
    opacity: 0.001;
    pointer-events: none;
    transition: opacity 0.18s ease;
    transform: translateZ(0);
}

.timeline-container.visible {
    opacity: 1;
    pointer-events: all;
}

.timeline-container.visible ~ /* Bouton flottant qui ouvre/ferme le panneau de controle principal. */
.top-menu {
    opacity: 0;
    pointer-events: none;
}

/* Carte translucide des controles, dimensionnee pour desktop et mobile. */
.timeline-box {
    width: min(74vw, 900px);
    position: relative;
    padding: 14px 16px;
    border-radius: 10px;
    background: linear-gradient(180deg, rgba(0,0,0,0.52), rgba(0,0,0,0.68));
    color: var(--ui-text);
    box-shadow: 0 18px 45px rgba(0,0,0,0.28);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    transform: translateZ(0);
}

/* Les sous-panneaux sont masques par defaut, puis affiches selon le mode body.*-mode. */
.timeline-panel,
.compare-panel {
    display: none;
}

body.timeline-mode /* Les sous-panneaux sont masques par defaut, puis affiches selon le mode body.*-mode. */
.timeline-panel,
body.slideshow-mode .timeline-panel {
    display: block;
}

body.compare-mode .compare-panel,
body.slider-mode .compare-panel {
    display: block;
}

/* Slider chronologique principal. */
#timeline {
    width: 100%;
    height: 5px;
    border-radius: 5px;
    appearance: none;
    background: rgba(255,255,255,0.3);
}

#timeline::-webkit-slider-thumb {
    appearance: none;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    background: white;
    cursor: pointer;
    position: relative;
    z-index: 2;
}

/* Champs date/select: style sombre compatible avec les panneaux translucides. */
.date-input,
.slideshow-field input,
.slideshow-field select {
    text-align: center;
    font-size: 13px;
    color: white;
    border: none;
    border-radius: 6px;
    padding: 5px 8px;
    min-height: 34px;
    background: rgba(255,255,255,0.2);
    appearance: none;
    -webkit-appearance: none;
    color-scheme: dark;
    box-sizing: border-box;
}

/* Options natives du select: texte sombre sur fond clair pour eviter le blanc sur blanc. */
.slideshow-field select option {
    color: #111827;
    background: #ffffff;
}

.date-input::-webkit-calendar-picker-indicator {
    filter: invert(1);
    cursor: pointer;
    position: relative;
    z-index: 2;
}

.timeline-controls .date-input,
.compare-menu-controls .date-input {
    height: 38px;
    min-height: 38px;
    border-radius: 8px;
}

/* Dates min/max affichees sous la timeline. */
.timeline-extremes {
    display: flex;
    justify-content: space-between;
    margin-top: 6px;
    font-size: 11px;
    opacity: 0.8;
}

/* Ligne de boutons standard pour timeline et comparaison. */
.timeline-controls,
.compare-menu-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
}

/* Style commun des boutons d action. */
.timeline-controls button,
.compare-menu-controls button,
.slideshow-play-btn {
    height: 38px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    background: rgba(255,255,255,0.2);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    transition: var(--transition-fast);
}

.timeline-controls button,
.compare-menu-controls button {
    width: 42px;
    min-width: 42px;
    padding: 0;
    flex: 0 0 42px;
}

.timeline-controls button:hover,
.compare-menu-controls button:hover,
.slideshow-play-btn:hover {
    background: var(--ui-bg-hover);
}

/* Grille des controles gauche/droite en modes comparaison et slider. */
.compare-menu-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-top: 4px;
}

.compare-menu-column {
    background: rgba(255,255,255,0.06);
    border-radius: 9px;
    padding: 10px;
}

.compare-menu-title {
    font-size: 11px;
    opacity: 0.82;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.compare-menu-controls .date-input {
    flex: 1;
    min-width: 0;
}

/* Selecteur de modes dans le panneau flottant. */
.timeline-mode-switcher {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 10px;
}

.mode-switch-btn {
    width: 46px;
    height: 38px;
    padding: 0;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    background: rgba(255,255,255,0.12);
    color: var(--ui-text);
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    transition: var(--transition-fast);
}

.mode-switch-btn.active {
    background: var(--ui-accent);
}

.mode-switch-btn:hover {
    background: rgba(255,255,255,0.25);
}

/* Infobulles temporisees des boutons d action. */
button[data-tooltip] {
    position: relative;
}

button[data-tooltip]::before,
button[data-tooltip]::after {
    position: absolute;
    left: 50%;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translate(-50%, 4px);
    transition: opacity 0.16s ease, transform 0.16s ease, visibility 0s linear 0.16s;
    z-index: 60;
}

button[data-tooltip]::before {
    content: attr(data-tooltip);
    top: calc(100% + 9px);
    width: max-content;
    max-width: 180px;
    padding: 6px 9px;
    border-radius: 8px;
    background: rgba(0,0,0,0.78);
    color: white;
    font-size: 11px;
    font-weight: 700;
    line-height: 1.2;
    text-align: center;
    white-space: nowrap;
    box-shadow: 0 8px 20px rgba(0,0,0,0.24);
}

button[data-tooltip]::after {
    content: "";
    top: calc(100% + 4px);
    border-right: 5px solid transparent;
    border-bottom: 5px solid rgba(0,0,0,0.78);
    border-left: 5px solid transparent;
}

button[data-tooltip]:hover::before,
button[data-tooltip]:hover::after,
button[data-tooltip]:focus-visible::before,
button[data-tooltip]:focus-visible::after {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, 0);
    transition-delay: 0.3s;
}

/* Controles du diaporama: date, pas, unite, vitesse, lecture, video et sens. */
.slideshow-controls {
    display: none;
    grid-template-columns: 82px minmax(180px, 1.35fr) 82px minmax(74px, 0.55fr) minmax(104px, 0.7fr) minmax(92px, 0.6fr) 82px 42px 82px;
    gap: 8px;
    align-items: end;
    margin-top: 10px;
}

/* En diaporama, on garde la timeline mais on masque sa ligne date/precedent/suivant. */
body.slideshow-mode .timeline-controls {
    display: none;
}

body.slideshow-mode /* Controles du diaporama: date, pas, unite, vitesse, lecture, video et sens. */
.slideshow-controls {
    display: grid;
    margin-top: 14px;
}

.slideshow-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 11px;
    opacity: 0.95;
}
.slideshow-controls .slideshow-play-btn {
    align-self: end;
}

.slideshow-controls .slideshow-direction-btn {
    width: 42px;
    min-width: 42px;
}

.slideshow-field input,
.slideshow-field select {
    width: 100%;
    box-sizing: border-box;
}

.slideshow-play-btn {
    width: 82px;
    min-width: 82px;
    height: 34px;
    padding: 0 12px;
    align-self: end;
}

/* Bouton d inversion du sens; l etat inverse est signale par une couleur chaude. */
.slideshow-direction-btn {
    background: rgba(255,255,255,0.16);
}

.slideshow-direction-btn.is-reverse {
    background: rgba(245,158,11,0.35);
}

.slideshow-direction-btn.is-reverse:hover {
    background: rgba(245,158,11,0.55);
}
.slideshow-video-btn {
    background: rgba(59,130,246,0.35);
}

.slideshow-video-btn:hover {
    background: rgba(59,130,246,0.55);
}

/* Le mode comparaison s affiche au-dessus du viewer timeline. */
.compare-mode #viewer {
    display: flex;
}

/* Conteneur plein ecran des deux images comparees. */
.compare-container {
    display: none;
    background: black;
    z-index: 10;
}

.compare-mode .compare-container {
    display: flex;
}

/* Chaque moitie de comparaison masque ce qui depasse. */
.compare-image {
    width: 50%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

/* Mode slider: une base plein ecran et un overlay masque par largeur dynamique. */
.compare-slider-container {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 15;
    overflow: hidden;
    background: black;
}

.slider-mode .compare-container {
    display: none;
}

.slider-mode .compare-slider-container {
    display: block;
}

.slider-mode .compare-slider-container .compare-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.slider-mode .compare-slider-container .compare-image .image-bg {
    display: block;
}

.slider-mode .compare-slider-container .base {
    z-index: 20;
}

/* Overlay du slider: sa largeur est modifiee en JS pendant le drag. */
.slider-mode .compare-slider-container .overlay {
    position: absolute;
    inset: 0;
    width: 50%;
    overflow: hidden;
    z-index: 25;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Image de base: visible en entier, centree dans la scene. */
.slider-mode .compare-slider-container .base img.main {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    max-width: none;
    max-height: none;
    object-fit: contain;
}

/* Fond de l overlay: conserve une taille viewport pour ne pas suivre le masque. */
.slider-mode .compare-slider-container .overlay .image-bg {
    display: block;
    width: 100vw;
    height: 100vh;
    max-width: none;
    max-height: none;
}

/* Image overlay: fixe par rapport au viewport, revelee uniquement par le masque overlay. */
.slider-mode .compare-slider-container .overlay img.main {
    position: absolute;
    top: 50%;
    left: 50vw;
    width: 100vw;
    height: 100vh;
    max-width: none;
    max-height: none;
    transform: translate(-50%, -50%);
    object-fit: contain;
    object-position: center center;
}

/* Poignee verticale du slider, positionnee par JS en pourcentage. */
.compare-slider {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 44px;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 35;
    cursor: ew-resize;
    touch-action: none;
}

/* Trait vertical du separateur. */
.compare-slider::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    transform: translateX(-50%);
    background: rgba(255,255,255,0.9);
    box-shadow: 0 0 0 1px rgba(0,0,0,0.2);
}

/* Pastille centrale de drag. */
.compare-handle {
    position: relative;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: rgba(255,255,255,0.96);
    box-shadow: 0 8px 24px rgba(0,0,0,0.28);
}

.compare-handle::before,
.compare-handle::after {
    content: "";
    position: absolute;
    top: 50%;
    width: 8px;
    height: 8px;
    border-top: 2px solid rgba(0,0,0,0.55);
}

.compare-handle::before {
    left: 9px;
    border-left: 2px solid rgba(0,0,0,0.55);
    transform: translateY(-50%) rotate(-45deg);
}

.compare-handle::after {
    right: 9px;
    border-right: 2px solid rgba(0,0,0,0.55);
    transform: translateY(-50%) rotate(45deg);
}

/* Adaptation tablette: controles empiles et panneau plus large. */
@media (max-width: 900px) {
    /* Carte translucide des controles, dimensionnee pour desktop et mobile. */
.timeline-box {
        width: min(92vw, 760px);
        padding: 12px 14px;
    }

    .compare-menu-grid,
    /* Controles du diaporama: date, pas, unite, vitesse, lecture, video et sens. */
.slideshow-controls {
        grid-template-columns: 1fr;
    }

    .slideshow-play-btn {
        width: 100%;
    }
}

/* Adaptation mobile: champs pleine largeur et poignee reduite. */
@media (max-width: 640px) {
    /* Ligne de boutons standard pour timeline et comparaison. */
.timeline-controls,
    .compare-menu-controls {
        flex-wrap: wrap;
        gap: 6px;
    }

    .timeline-controls button {
        order: 1;
    }

    .timeline-controls .date-input {
        order: 2;
        width: 100%;
        flex: 1 0 100%;
        margin-top: 2px;
    }

    .compare-menu-controls .date-input {
        width: 100%;
    }

    /* Carte translucide des controles, dimensionnee pour desktop et mobile. */
.timeline-box {
        width: calc(100vw - 20px);
        padding: 10px 12px;
    }

    /* Selecteur de modes dans le panneau flottant. */
.timeline-mode-switcher {
        gap: 5px;
    }

    /* Poignee verticale du slider, positionnee par JS en pourcentage. */
.compare-slider {
        width: 40px;
    }

    /* Pastille centrale de drag. */
.compare-handle {
        width: 30px;
        height: 30px;
    }
}

/* Bouton et panneau d informations chantier dans les badges date. */
.image-timestamp-info,
.image-timestamp-plain {
    display: inline-flex;
    align-items: center;
}

.image-timestamp-info {
    gap: 7px;
    pointer-events: auto;
}

.site-info-toggle {
    width: 18px;
    height: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255,255,255,0.55);
    border-radius: 50%;
    padding: 0;
    background: rgba(255,255,255,0.12);
    color: white;
    font-size: 12px;
    font-weight: 800;
    line-height: 1;
    cursor: pointer;
    position: relative;
    z-index: 2;
}

.site-info-toggle:hover,
.site-info-toggle.is-active {
    background: rgba(255,255,255,0.28);
}

.site-info-panel {
    position: fixed;
    top: 52px;
    right: 18px;
    z-index: 120;
    width: min(300px, calc(100vw - 36px));
    padding: 14px 16px;
    border-radius: 8px;
    background: rgba(0,0,0,0.72);
    color: white;
    font-size: 13px;
    backdrop-filter: blur(10px);
    box-shadow: 0 14px 36px rgba(0,0,0,0.32);
}

.site-info-panel[hidden] {
    display: none;
}

.site-info-title {
    margin-bottom: 10px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0;
}

.site-info-panel p {
    margin: 0;
}

.site-info-panel dl {
    display: grid;
    gap: 8px;
    margin: 0;
}

.site-info-panel dl div {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 14px;
}

.site-info-panel dt {
    color: rgba(255,255,255,0.68);
}

.site-info-panel dd {
    margin: 0;
    font-weight: 700;
    text-align: right;
}
.site-info-doc-link {
    display: inline-flex;
    margin-top: 12px;
    color: rgba(255,255,255,0.86);
    font-weight: 500;
    letter-spacing: 0;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.site-info-doc-link:hover {
    color: rgba(255,255,255,0.78);
}