:root {
    --panel-bg: rgba(17, 24, 39, 0.88);
    --panel-border: rgba(255,255,255,0.08);
    --text-main: #f5f5f4;
    --text-soft: #d6d3d1;
    --accent: #facc15;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    overflow: hidden;
    font-family: Inter, system-ui, sans-serif;
    background: #0f172a;
    color: var(--text-main);
}

#map {
    position: absolute;
    inset: 0;
}

/* HERO PANEL */

#hero {
    position: absolute;
    top: 24px;
    left: 24px;
    width: min(420px, calc(100vw - 32px));
    background: var(--panel-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--panel-border);
    border-radius: 20px;
    padding: 22px;
    z-index: 3;
    box-shadow: 0 10px 40px rgba(0,0,0,0.35);
    animation: fadeIn 0.8s ease;
    transition:
        transform 0.3s ease,
        opacity 0.3s ease,
        width 0.3s ease,
        padding 0.3s ease;
}

#hero.collapsed {
    width: auto;
    padding:
        10px 48px
        10px 16px;
    border-radius: 16px;
}

#hero.collapsed h1 {
    margin: 0;
    font-size: 20px;
    white-space: nowrap;
}

#hero.collapsed #subtitle,
#hero.collapsed #instruction,
#hero.collapsed #buttons {
    display: none;
}

#heroToggle {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 10px;
    background: rgba(255,255,255,0.08);
    color: white;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition:
        background 0.2s ease,
        transform 0.2s ease;
}

#heroToggle:hover {
    background: rgba(255,255,255,0.16);
    transform: scale(1.05);
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

h1 {
    margin: 0;
    font-size: clamp(28px, 4vw, 42px);
    line-height: 1.05;
    font-weight: 700;
}

#subtitle {
    margin-top: 14px;
    color: var(--text-soft);
    line-height: 1.6;
    font-size: 16px;
}

#instruction {
    margin-top: 18px;
    padding: 12px 14px;
    border-radius: 12px;
    background: rgba(250, 204, 21, 0.12);
    color: #fde68a;
    font-size: 15px;
    line-height: 1.5;
}

.dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent);
    margin-right: 8px;
    box-shadow: 0 0 12px rgba(250, 204, 21, 0.7);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.25);
        opacity: 0.7;
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* BUTTONS */

#buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.btn,
.langBtn {
    border: none;
    border-radius: 12px;
    padding: 10px 14px;
    background: rgba(255,255,255,0.08);
    color: white;
    cursor: pointer;
    font-size: 14px;
    transition:
        background 0.2s ease,
        transform 0.2s ease;
}

.btn:hover,
.langBtn:hover {
    background: rgba(255,255,255,0.16);
    transform: translateY(-1px);
}

.langBtn.active {
    background: rgba(250, 204, 21, 0.16);
    color: #fde68a;
}

/* LANGUAGE SWITCHER */

#langSwitcher {
    position: absolute;
    top: 24px;
    right: 24px;
    z-index: 3;
    display: flex;
    gap: 10px;
    overflow-x: auto;
    flex-wrap: nowrap;
    max-width: calc(100vw - 48px);
    scrollbar-width: none;
}

#langSwitcher::-webkit-scrollbar {
    display: none;
}

/* VIEWER */

#viewer {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.92);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
    padding: 20px;
}

.hidden {
    display: none !important;
}

#photoCard {
    width: min(920px, 100%);
    background: #111827;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.45);
}

#viewerImg {
    width: 100%;
    max-height: 72vh;
    object-fit: contain;
    background: black;
}

#photoInfo {
    padding: 20px;
}

#photoLocation {
    font-size: 28px;
    font-weight: 600;
}

#photoUser {
    margin-top: 8px;
    color: #cbd5e1;
    font-size: 15px;
}

#photoDescription {
    margin-top: 14px;
    font-size: 15px;
    line-height: 1.5;
    opacity: 0.9;
}
#closeBtn {
    position: absolute;
    top: 18px;
    right: 20px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,0.1);
    color: white;
    font-size: 24px;
    cursor: pointer;
}

/* OVERLAYS */

.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.84);
    z-index: 9;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.overlayCard {
    width: min(760px, 100%);
    max-height: 85vh;
    overflow-y: auto;
    background: #111827;
    border-radius: 24px;
    padding: 28px;
    line-height: 1.8;
    color: #e5e7eb;
    box-shadow: 0 20px 60px rgba(0,0,0,0.45);
}

.overlayCard h2 {
    margin-top: 0;
    color: white;
    font-size: 32px;
}

.overlayCard ul {
    padding-left: 22px;
}

.overlayCard li {
    margin-bottom: 12px;
}

/* MOBILE */

@media (max-width: 768px) {
    #hero {
        top: 56px;
        left: 12px;
        right: 12px;
        width: auto;
        padding: 18px;
    }

    #hero.collapsed {
        left: 12px;
        right: auto;
        width: auto;
    }

    #langSwitcher {
        top: auto;
        bottom: 12px;
        left: 12px;
        right: 12px;
        justify-content: flex-start;
    }

    h1 {
        font-size: 30px;
    }

    #subtitle {
        font-size: 15px;
    }

    #instruction {
        font-size: 14px;
    }

    #photoLocation {
        font-size: 22px;
    }

    #photoDescription {
        font-size: 15px;
    }

    .overlayCard {
        padding: 22px;
    }
}