:root {
--text: #efe9f5;
--bg: #100818;
--primary: #bd8fe9;
--primary-hover: #a870e9;
--secondary: #580f9d;
--secondary-hover: #4a0b7a;
--accent: #992efd;
--accent-hover: #7a1ed9;
}

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    font-family: Inter, Arial, sans-serif;
    display: flex;
    flex-direction: column;
    height: 100vh;
    color: var(--text);
}

button {
    font-family: inherit;
}

input {
    font-family: inherit;
}

input[type="date"],
input[type="time"] {
    font-family: monospace;
}

#header {
    flex: 0 0 auto;
    padding: 1.5rem;
    background: var(--bg);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

#time-range-bar {
    position: relative;
    width: 100%;
    height: 2rem;
    margin-bottom: 1.5rem;
    background: none;
}

#time-range-bar-bg {
    position: absolute;
    left: 0; right: 0; top: 2rem;
    height: 1rem;
    background: #5a5a68;
    border-radius: 0.5rem;
    width: 100%;
    z-index: 1;
}

#time-range-bar-selected {
    position: absolute;
    top: 2rem;
    height: 1rem;
    background: var(--primary);
    z-index: 2;
}

.time-range-bar-handle {
    position: absolute;
    top: 2rem;
    width: 1rem;
    height: 1rem;
    background: var(--bg);
    border: 2px solid var(--primary);
    border-radius: 50%;
    z-index: 4;
    cursor: ew-resize;
    box-shadow: 0 2px 6px rgba(0,0,0,0.12);
    box-sizing: border-box;
}

.time-range-bar-handle:active {
    background: var(--primary-hover);
}

#playback-indicator {
    position: absolute;
    top: 1.8rem;
    height: 1.4rem;
    width: 4px;
    background: #ff7800;
    z-index: 5;
    cursor: ew-resize;
    border-radius: 2px;
    display: none; /* Hidden by default until playback starts or file loaded */
    box-shadow: 0 0 4px rgba(0,0,0,0.5);
}

#time-range-bar-labels {
    position: absolute;
    left: 0; right: 0; top: 0;
    display: flex;
    justify-content: space-between;
    font-size: 0.95rem;
    z-index: 3;
    pointer-events: none;
}

#path-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

#path-info #number-of-paths {
    font-weight: bold;
    color: var(--primary);
}

#speed-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

#speed-info #min-speed,
#speed-info #max-speed {
    font-weight: bold;
    color: var(--primary);
    min-width: 2.5rem;
}

#accuracy-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

#accuracy-control input[type="range"] {
    width: 30rem;
    height: 0.5rem;
    background: #5a5a68;
    border-radius: 0.25rem;
    outline: none;
    cursor: pointer;
}

#accuracy-control input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 1rem;
    height: 1rem;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
}

#accuracy-control input[type="range"]::-moz-range-thumb {
    width: 1rem;
    height: 1rem;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

#accuracy-value {
    font-weight: bold;
    color: var(--primary);
}

#date-time-controls {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

#date-time-controls input {
    font-size: 1rem;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.control-group label {
    min-width: 3rem;
}

.control-group button {
    background: var(--primary);
    color: var(--bg);
    border: none;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    cursor: pointer;
    font-size: 0.9rem;
    min-width: 1.75rem;
    height: 1.75rem;
}

.control-group button:hover {
    background: var(--primary-hover);
}

.control-group button:active {
    transform: translateY(1px);
}

#start-date-today {
    min-width: 4rem;
    font-weight: bold;
}

#end-date-placeholder {
    min-width: 4rem;
}

#visualization-mode {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

#visualization-mode > label:first-child {
    margin-right: 0.5rem;
}

#visualization-mode label {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    cursor: pointer;
}

#visualize-row {
    display: flex;
    gap: 1em;
    align-items: center;
}

#visualize-button {
    background: var(--accent);
    color: var(--bg);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 0.25rem;
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
}

#visualize-button:hover {
    background: var(--accent-hover);
}

#view-control label {
    cursor: pointer;
}

#view-control input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
}

#map {
    flex: 1 1 auto;
    min-height: 0;
    min-width: 0;
}
#play-pause-btn {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 0.5rem 1.5rem;
    border-radius: 0.25rem;
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
    min-width: 5rem;
    transition: background 0.2s, transform 0.1s;
}

#play-pause-btn:hover {
    background: var(--accent-hover);
}

#play-pause-btn:active {
    transform: translateY(1px);
}