:root {
    /* Canvas */
    --canvas-width: 1920px;
    --canvas-height: 1080px;

    /* Position */
    --overlay-left: 30px;
    --overlay-bottom: 30px;

    /* Brand Colours */
    --navy-1: #040e60;
    --navy-2: #030e69;
    --navy-3: #0e3162;
    --accent: #e6b413;
    --text-primary: #ffffff;
    --text-secondary: #d3d3d3;

    /* Gradients */
    --gradient-navy: linear-gradient(135deg, var(--navy-1) 0%, var(--navy-2) 50%, var(--navy-3) 100%);

    /* Gold variants */
    --color-gold-hover: #A88F35;
    --color-gold-border-faint: rgba(238, 179, 11, 0.3);
    --color-gold-border-subtle: rgba(238, 179, 11, 0.35);

    /* Button states */
    --color-danger: #C0392B;
    --color-danger-hover: #A5301F;

    /* Dividers */
    --color-divider-strong: rgba(255, 255, 255, 0.15);

    /* Buttons */
    --color-button-bg: rgba(255, 255, 255, 0.05);
    --color-button-bg-hover: rgba(255, 255, 255, 0.1);

    /* Text */
    --color-hint-text: #9a9ab8;
    --color-input-border: #3a3a5a;
    --color-input-bg: #1a1b2e;
    --color-textarea-bg: #0a1540;
    --color-textarea-text: #D3D3D3;

    /* Glass */
    --color-glass-bg: rgba(255, 255, 255, 0.08);
    --color-glass-border: rgba(255, 255, 255, 0.18);

    /* Layout */
    --panel-padding-y: 18px;
    --panel-padding-left: 24px;
    --panel-padding-right: 36px;
    --panel-radius: 12px;
    --panel-border-width: 8px;
    --panel-shadow: 0 8px 25px rgba(0, 0, 0, 0.35);

    /* Spacing */
    --label-gap: 8px;
    --icon-gap: 15px;
    --pipe-spacing: 15px;

    /* Typography */
    --font-heading: "Sora", sans-serif;
    --font-body: "Manrope", sans-serif;
    --label-size: 22px;
    --label-weight: 500;
    --label-letter-spacing: 2.5px;
    --address-size: 32px;
    --address-weight: 600;

    /* Icon */
    --icon-size: 32px;

    /* Scaling */
    --canvas-scale: 1;
    --card-scale: 1;
    --panel-scale-factor: 1;
}

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

html,
body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: transparent;
}

body {
    font-family: var(--font-body);
    position: relative;
}

/* Overlay Wrapper - owns fixed position and scale transform */
#overlayWrapper {
    position: fixed;
    left: var(--overlay-left);
    bottom: var(--overlay-bottom);
    transform-origin: bottom left;
    transform: scale(calc(var(--canvas-scale) * var(--card-scale)));
    transition: transform 0.15s ease, opacity 0.15s ease;
    pointer-events: none;
    opacity: 0;
}

/* Overlay Card */
#overlayCard {
    width: auto;
    max-width: none;
    background: var(--gradient-navy);
    border-left: var(--panel-border-width) solid var(--accent);
    border-radius: 0 var(--panel-radius) var(--panel-radius) 0;
    box-shadow: var(--panel-shadow);
    overflow: hidden;
    opacity: 1;
    pointer-events: auto;
}

.card-accent-bar {
    height: 0.75px;
    background: linear-gradient(90deg, var(--accent), #f5d06e, var(--accent));
    background-size: 200% 100%;
    animation: shimmer 3.5s linear infinite;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.card-body {
    padding:
        var(--panel-padding-y)
        var(--panel-padding-right)
        var(--panel-padding-y)
        var(--panel-padding-left);
}

.location-label {
    margin-bottom: var(--label-gap);
    font-family: var(--font-heading);
    font-size: var(--label-size);
    font-weight: var(--label-weight);
    letter-spacing: var(--label-letter-spacing);
    text-transform: uppercase;
    color: var(--text-secondary);
}

.address-line {
    display: flex;
    align-items: center;
    gap: var(--icon-gap);
}

.location-icon {
    width: var(--icon-size);
    height: var(--icon-size);
    flex-shrink: 0;
    fill: var(--accent);
}

.location-address {
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
    font-family: var(--font-body);
    font-size: var(--address-size);
    font-weight: var(--address-weight);
    color: var(--text-primary);
    white-space: normal;
}

.pipe {
    margin-inline: var(--pipe-spacing);
    color: var(--accent);
    font-weight: 400;
    font-size: 1.05em;
}

/* Control Panel - Top-right to avoid overlap with bottom-left overlay */
#controlPanel {
    position: fixed;
    top: 20px;
    right: 20px;
    width: max(340px, calc(440px * var(--panel-scale-factor)));
    min-height: 320px;
    transform-origin: top right;
    opacity: 1;
    background: var(--gradient-navy);
    padding: 0 calc(28px * var(--panel-scale-factor)) calc(22px * var(--panel-scale-factor));
    border-radius: 16px;
    box-shadow: 0 10px 36px rgba(0, 0, 0, 0.55);
    transition: opacity 0.3s, width 0.15s ease, box-shadow 0.2s;
    z-index: 10000;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    font-size: calc(1em * var(--panel-scale-factor));
}

#controlPanel.hidden {
    opacity: 0;
    pointer-events: none;
}

#cpPanelHeader {
    position: sticky;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: calc(8px * var(--panel-scale-factor));
    margin: 0 calc(-28px * var(--panel-scale-factor)) calc(14px * var(--panel-scale-factor));
    padding: calc(14px * var(--panel-scale-factor)) calc(28px * var(--panel-scale-factor)) calc(10px * var(--panel-scale-factor));
    background: var(--navy-2);
    border-bottom: 1px solid var(--color-glass-border);
    border-radius: 16px 16px 0 0;
    z-index: 1;
}

#controlPanel h2 {
    text-align: center;
    color: var(--accent);
    font-family: var(--font-body);
    font-size: calc(20px * var(--panel-scale-factor));
    letter-spacing: 0.5px;
    flex: 1;
}

#controlPanel #cpHeaderClose {
    flex: 0 0 auto;
    width: 28px;
    height: 28px;
    min-width: 28px;
    min-height: 28px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: var(--color-danger);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.15s;
}

#controlPanel #cpHeaderClose:hover,
#controlPanel #cpHeaderClose:active,
#controlPanel #cpHeaderClose.btn-touch-active {
    background: var(--color-danger-hover);
}

.cp-section-title {
    font-size: calc(11px * var(--panel-scale-factor));
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--accent);
    margin: calc(14px * var(--panel-scale-factor)) 0 calc(8px * var(--panel-scale-factor));
    opacity: 0.8;
}

.cp-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(10px * var(--panel-scale-factor)) calc(16px * var(--panel-scale-factor));
}

.cp-group {
    display: flex;
    flex-direction: column;
    gap: calc(4px * var(--panel-scale-factor));
}

.cp-group.full-width {
    grid-column: 1 / -1;
}

.cp-scale-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.cp-scale-row input[type="range"] {
    flex: 1;
}

.cp-scale-row input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    border-radius: 2px;
    background: var(--color-divider-strong);
    outline: none;
}

.cp-scale-row input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent);
    border: 2px solid var(--navy-1);
    cursor: pointer;
}

.cp-scale-row input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent);
    border: 2px solid var(--navy-1);
    cursor: pointer;
}

#cpScaleReadout,
#cpPanelWidthReadout {
    font-size: calc(15px * var(--panel-scale-factor));
    font-weight: 700;
    color: var(--accent);
    white-space: normal;
    min-width: 40px;
    text-align: right;
}

#controlPanel label {
    font-size: calc(13px * var(--panel-scale-factor));
    font-weight: 600;
    color: var(--text-secondary);
}

.cp-hint {
    font-size: calc(11.5px * var(--panel-scale-factor));
    color: var(--color-hint-text);
    line-height: 1.5;
    margin-top: 2px;
}

#controlPanel input[type="text"],
#controlPanel input[type="number"] {
    width: 100%;
    padding: calc(11px * var(--panel-scale-factor)) calc(12px * var(--panel-scale-factor));
    font-size: calc(15px * var(--panel-scale-factor));
    border-radius: 6px;
    border: 1px solid var(--color-input-border);
    background: var(--color-input-bg);
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.2s;
    min-height: max(44px, calc(44px * var(--panel-scale-factor)));
}

#controlPanel input:focus {
    border-color: var(--accent);
}

.cp-btn-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(8px * var(--panel-scale-factor));
    margin-top: calc(14px * var(--panel-scale-factor));
}

#controlPanel button {
    padding: calc(10px * var(--panel-scale-factor));
    font-size: calc(12px * var(--panel-scale-factor));
    border-radius: 7px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.1s ease;
    letter-spacing: 0.3px;
    min-height: max(38px, calc(38px * var(--panel-scale-factor)));
    font-family: var(--font-body);
}

#controlPanel button:disabled {
    cursor: default;
    opacity: 0.45;
}

#controlPanel button:not(:disabled):active,
#controlPanel button:not(:disabled).btn-touch-active {
    transform: scale(0.97);
}

/* Secondary buttons */
#controlPanel button {
    background: var(--color-button-bg);
    color: var(--text-secondary);
    border: 1px solid var(--color-glass-border);
}

@media (hover: hover) and (pointer: fine) {
    #controlPanel button:not(:disabled):hover {
        background: var(--color-button-bg-hover);
        border-color: var(--color-gold-border-subtle);
        color: var(--text-primary);
    }
}

#controlPanel button:not(:disabled):active,
#controlPanel button:not(:disabled).btn-touch-active {
    background: var(--color-glass-bg);
    border-color: var(--accent);
    color: var(--text-primary);
}

/* Primary buttons */
#cpSaveBtn, #cpUpdateBtn {
    background: var(--accent);
    color: var(--navy-1);
    border-color: var(--accent);
}

@media (hover: hover) and (pointer: fine) {
    #cpSaveBtn:not(:disabled):hover,
    #cpUpdateBtn:not(:disabled):hover {
        background: #f0c53d;
        border-color: #f0c53d;
        color: var(--navy-1);
    }
}

#cpSaveBtn:not(:disabled):active, #cpSaveBtn:not(:disabled).btn-touch-active,
#cpUpdateBtn:not(:disabled):active, #cpUpdateBtn:not(:disabled).btn-touch-active {
    background: var(--color-gold-hover);
    border-color: var(--color-gold-hover);
    color: var(--text-primary);
}

/* Destructive button */
#cpResetBtn {
    background: var(--color-danger);
    color: var(--text-primary);
    border-color: var(--color-danger);
}

@media (hover: hover) and (pointer: fine) {
    #cpResetBtn:not(:disabled):hover {
        background: #d64535;
        border-color: #d64535;
    }
}

#cpResetBtn:not(:disabled):active, #cpResetBtn:not(:disabled).btn-touch-active {
    background: var(--color-danger-hover);
    border-color: var(--color-danger-hover);
}

/* JSON Areas */
.json-area.hidden {
    display: none;
}

.json-area {
    display: flex;
    flex-direction: column;
    gap: calc(8px * var(--panel-scale-factor));
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--color-glass-border);
    border-radius: 6px;
    padding: calc(12px * var(--panel-scale-factor));
    margin-top: calc(10px * var(--panel-scale-factor));
}

.json-area label {
    font-size: calc(11px * var(--panel-scale-factor));
    color: var(--text-secondary);
    font-weight: 400;
}

.json-area textarea {
    width: 100%;
    font-family: monospace;
    font-size: calc(12px * var(--panel-scale-factor));
    padding: calc(8px * var(--panel-scale-factor));
    border: 1px solid var(--color-input-border);
    border-radius: 4px;
    background: var(--color-textarea-bg);
    color: var(--color-textarea-text);
    resize: vertical;
    line-height: 1.5;
}

.button-row {
    display: flex;
    gap: calc(8px * var(--panel-scale-factor));
    justify-content: flex-end;
    margin-top: calc(8px * var(--panel-scale-factor));
}

.button-row button {
    min-width: auto;
}

/* Shortcut List */
.shortcut-list {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: calc(6px * var(--panel-scale-factor)) calc(12px * var(--panel-scale-factor));
    font-size: calc(13px * var(--panel-scale-factor));
    margin-top: calc(10px * var(--panel-scale-factor));
    margin-bottom: calc(14px * var(--panel-scale-factor));
}

.shortcut-list dt {
    font-weight: 700;
    color: var(--accent);
    white-space: normal;
}

.shortcut-list dd {
    color: var(--text-secondary);
}

/* Touch Active State */
.btn-touch-active {
    transform: scale(0.96) !important;
}

/* Responsive Canvas Scaling */
@media screen {
    :root {
        --canvas-scale: calc(min(window.innerWidth / 1920, window.innerHeight / 1080));
    }
}