/**
 * Solar Layout Designer Styles with Google Maps Integration
 * Modern UI Redesign — Clean, Minimal SaaS Aesthetic (v1.5.0)
 */

:root {
    --sld-blue:       #0066CC;
    --sld-blue-dark:  #0052A3;
    --sld-blue-light: #E8F2FF;
    --sld-surface:    #FFFFFF;
    --sld-bg:         #F9FAFB;
    --sld-border:     #E5E7EB;
    --sld-text:       #111827;
    --sld-text-2:     #6B7280;
    --sld-text-3:     #9CA3AF;
    --sld-amber:      #F59E0B;
    --sld-amber-bg:   #FFFBEB;
    --sld-green:      #10B981;
    --sld-red:        #EF4444;
    --sld-radius:     8px;
    --sld-radius-sm:  6px;
    --sld-shadow-sm:  0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
    --sld-shadow-md:  0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
}

.solar-designer-container {
    max-width: 1200px;
    margin: 20px auto;
    padding: 24px;
    background: var(--sld-surface);
    border: 1px solid var(--sld-border);
    border-radius: 12px;
    box-shadow: var(--sld-shadow-md);
}

/* Controls Toolbar */
.sld-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    margin-bottom: 24px;
    padding: 12px 16px;
    background: var(--sld-bg);
    border: 1px solid var(--sld-border);
    border-radius: var(--sld-radius);
    flex-wrap: wrap;
}

.sld-controls-left {
    display: flex;
    gap: 12px;
}

.sld-controls-right {
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap;
}

.sld-btn-group {
    display: flex;
    gap: 12px;
    align-items: center;
}

.sld-map-controls {
    display: flex;
    gap: 10px;
    align-items: center;
}

.sld-map-controls label {
    font-size: 13px;
    font-weight: 600;
    color: var(--sld-text-2);
    white-space: nowrap;
}

.sld-toggle-controls {
    display: flex;
    align-items: center;
}

.sld-toggle-controls label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--sld-text-2);
    cursor: pointer;
}

.sld-notice {
    font-size: 13px;
    color: var(--sld-text-2);
    margin: 0;
    padding: 12px 16px;
    background: var(--sld-blue-light);
    border: 1px solid var(--sld-blue);
    border-radius: var(--sld-radius-sm);
}

.sld-notice a {
    color: var(--sld-blue);
    text-decoration: none;
    font-weight: 600;
}

.sld-notice a:hover {
    text-decoration: underline;
}

/* Buttons */
.sld-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 18px;
    border: none;
    border-radius: var(--sld-radius-sm);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.01em;
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    white-space: nowrap;
}

.sld-btn-icon {
    font-size: 15px;
    line-height: 1;
    flex-shrink: 0;
}

.sld-btn-primary {
    background: var(--sld-blue);
    color: white;
    border: none;
}

.sld-btn-primary:hover {
    background: var(--sld-blue-dark);
    box-shadow: var(--sld-shadow-md);
}

.sld-btn-primary:disabled {
    background: var(--sld-border);
    color: var(--sld-text-3);
    cursor: not-allowed;
    opacity: 0.6;
}

.sld-btn-secondary {
    background: transparent;
    border: 1.5px solid var(--sld-border);
    color: var(--sld-text-2);
}

.sld-btn-secondary:hover {
    border-color: var(--sld-text-2);
    background: var(--sld-bg);
}

.sld-btn-secondary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Input Fields */
.sld-input {
    padding: 10px 12px;
    border: 1.5px solid var(--sld-border);
    border-radius: var(--sld-radius-sm);
    font-size: 14px;
    background: var(--sld-surface);
    min-width: 200px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.sld-input:focus {
    outline: none;
    border-color: var(--sld-blue);
    box-shadow: 0 0 0 3px var(--sld-blue-light);
}

.sld-input::placeholder {
    color: var(--sld-text-3);
}

.sld-input-number {
    padding: 10px 12px;
    border: 1.5px solid var(--sld-border);
    border-radius: var(--sld-radius-sm);
    font-size: 14px;
    font-weight: 600;
    color: var(--sld-text);
    background: var(--sld-surface);
    width: 85px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.sld-input-number:focus {
    outline: none;
    border-color: var(--sld-blue);
    box-shadow: 0 0 0 3px var(--sld-blue-light);
}

/* Map + Panel Container */
.sld-canvas-wrapper {
    position: relative;
    margin: 24px 0;
    border: 1px solid var(--sld-border);
    border-radius: var(--sld-radius);
    overflow: hidden;
    background: var(--sld-bg);
    /* height is set explicitly via JS */
}

/* Google Map Background */
.sld-map-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* Panel Area — sits on top of the map */
.sld-panel-area {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 999;
    pointer-events: none; /* transparent to map clicks by default */
}

/* Helper text when no panels */
.sld-helper-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--sld-text-3);
    font-size: 16px;
    text-align: center;
    margin: 0;
    pointer-events: none;
    white-space: nowrap;
}

/* Individual panel element — solar cell grid */
.sld-panel-item {
    position: absolute;
    /* Dark navy base, like real photovoltaic panels */
    background-color: rgba(18, 44, 95, 0.92);
    /* Grid overlay: 3 columns × 5 rows of cells + top reflection */
    background-image:
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent calc(33.333% - 1px),
            rgba(130, 180, 255, 0.28) calc(33.333% - 1px),
            rgba(130, 180, 255, 0.28) 33.333%
        ),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent calc(20% - 1px),
            rgba(130, 180, 255, 0.28) calc(20% - 1px),
            rgba(130, 180, 255, 0.28) 20%
        ),
        linear-gradient(150deg, rgba(120, 180, 255, 0.14) 0%, transparent 55%);
    border: 2px solid #4a90d9;
    border-radius: 2px;
    box-sizing: border-box;
    cursor: grab;
    user-select: none;
    box-shadow: 2px 2px 7px rgba(0, 0, 0, 0.5);
    pointer-events: auto;
    touch-action: none;
}

.sld-panel-item:hover {
    background-color: rgba(28, 65, 138, 0.95);
    border-color: #7ab8ff;
    box-shadow: 0 0 0 1px rgba(122, 184, 255, 0.5), 2px 2px 7px rgba(0, 0, 0, 0.5);
}

/* Panel number label — hidden by default, shown on hover */
.sld-panel-label {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.65);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    padding: 1px 4px;
    border-radius: 2px;
    line-height: 1.4;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s ease;
    white-space: nowrap;
}

.sld-panel-item:hover .sld-panel-label {
    opacity: 1;
}

/* Instruction hint below the map area */
.sld-panel-hint {
    margin-top: 8px;
    font-size: 12px;
    color: var(--sld-text-3);
    text-align: center;
}

.sld-hint-mobile { display: none; }
.sld-hint-desktop { display: inline; }

/* Satellite view toggle switch */
.sld-toggle-controls input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 36px;
    height: 20px;
    background: var(--sld-border);
    border-radius: 10px;
    position: relative;
    cursor: pointer;
    transition: background 0.2s ease;
    flex-shrink: 0;
    vertical-align: middle;
}

.sld-toggle-controls input[type="checkbox"]::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    background: white;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: transform 0.2s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.sld-toggle-controls input[type="checkbox"]:checked {
    background: var(--sld-blue);
}

.sld-toggle-controls input[type="checkbox"]:checked::after {
    transform: translateX(16px);
}

.sld-toggle-controls input[type="checkbox"]:focus-visible {
    outline: 2px solid var(--sld-blue);
    outline-offset: 2px;
}

/* Selected state */
.sld-panel-item.sld-panel-selected {
    border-color: var(--sld-red);
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.3), 3px 3px 8px rgba(0, 0, 0, 0.35);
}

/* Rotation handle — circle above the panel top edge, only visible when panel is selected */
.sld-rotate-handle {
    position: absolute;
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.95);
    border: 2px solid var(--sld-blue);
    border-radius: 50%;
    top: -18px;
    left: calc(50% - 6px);
    cursor: crosshair;
    opacity: 0;
    pointer-events: none;
    z-index: 2;
    box-sizing: border-box;
    transition: opacity 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.sld-panel-item.sld-panel-selected .sld-rotate-handle {
    opacity: 1;
    pointer-events: auto;
}

.sld-rotate-handle:hover {
    background: var(--sld-blue);
    box-shadow: 0 0 6px rgba(0, 102, 204, 0.4);
}

/* Larger touch target for rotation handle */
.sld-rotate-handle::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 24px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: auto;
}

/* Location Info */
.sld-location-info {
    margin-top: 20px;
    padding: 10px 14px;
    background: var(--sld-bg);
    border: 1px solid var(--sld-border);
    border-radius: 20px;
    display: inline-block;
}

.sld-location-info small {
    font-size: 12px;
    color: var(--sld-text-2);
    font-family: monospace;
}

/* PVGIS Solar Data */
.sld-solar-data {
    margin-top: 16px;
    padding: 12px 16px;
    background: var(--sld-blue-light);
    border: 1px solid var(--sld-blue);
    border-radius: var(--sld-radius);
}

.sld-solar-data small {
    font-size: 12px;
    color: var(--sld-text-2);
    font-family: monospace;
}

/* Statistics — Card-Based Layout */
.sld-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-top: 24px;
}

.sld-stat-item {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 16px 20px;
    background: var(--sld-surface);
    border: 1px solid var(--sld-border);
    border-radius: var(--sld-radius);
    transition: box-shadow 0.2s ease;
}

.sld-stat-item:hover {
    box-shadow: var(--sld-shadow-sm);
}

.sld-stat-item:has(input):hover {
    box-shadow: none;
}

.sld-stat-item label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--sld-text-3);
}

.sld-stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--sld-text);
}

.sld-stat-highlight {
    background: var(--sld-amber-bg);
    border: 1px solid var(--sld-amber);
    border-left: 3px solid var(--sld-amber);
}

.sld-stat-highlight label {
    color: var(--sld-text-3);
}

.sld-stat-highlight .sld-stat-value {
    color: var(--sld-text);
}

/* Mobile Floating Panel — hidden on desktop, shown on mobile via media query below */
.sld-mobile-float {
    display: none;
}

/* Mobile Top Bar (sticky stats) + Mobile Address Bar — hidden on desktop */
.sld-mobile-topbar,
.sld-mobile-address-bar {
    display: none;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .sld-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .sld-controls-left,
    .sld-controls-right {
        width: 100%;
    }

    .sld-map-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .sld-input {
        width: 100%;
    }

    .sld-stats {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
}

@media (max-width: 768px) {
    /* ── Desktop elements hidden on mobile ── */
    .sld-controls,
    .sld-stats,
    .sld-solar-data,
    .sld-location-info,
    .sld-panel-hint {
        display: none !important;
    }

    /* ── Container: edge-to-edge, no chrome ── */
    .solar-designer-container {
        padding: 0;
        margin: 0;
        border-radius: 0;
        border-left: none;
        border-right: none;
        border-top: none;
        box-shadow: none;
    }

    /* ── Canvas: height set by JS (capped at 50vh on mobile) ── */
    .sld-canvas-wrapper {
        margin: 0;
        border-radius: 0;
        border: none;
    }

    /* ── Mobile Address Bar — scrolls with page, above sticky topbar ── */
    .sld-mobile-address-bar {
        display: flex;
        flex-direction: column;
        gap: 6px;
        padding: 10px 14px;
        background: var(--sld-surface);
        border-bottom: 1px solid var(--sld-border);
    }

    /* ── Mobile Top Bar — sticky stats row ── */
    .sld-mobile-topbar {
        display: flex;
        align-items: center;
        padding: 12px 16px;
        background: var(--sld-surface);
        border-bottom: 1px solid var(--sld-border);
        position: sticky;
        top: 0;
        z-index: 100;
    }

    /* ── Mobile Floating Panel — pinned to bottom of viewport ── */
    .sld-mobile-float {
        display: flex;
        flex-direction: column;
        gap: 10px;
        padding: 10px 14px 14px;
        background: var(--sld-surface);
        border-top: 1px solid var(--sld-border);
        box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.12);
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 1500;
    }

    /* Stats row */
    .sld-mf-stats {
        display: flex;
        gap: 8px;
        align-items: flex-start;
    }

    .sld-mf-stat {
        flex: 1;
        display: flex;
        flex-direction: column;
        gap: 2px;
    }

    .sld-mf-label {
        font-size: 11px;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        color: var(--sld-text-3);
        white-space: nowrap;
    }

    .sld-mf-val {
        font-size: 24px;
        font-weight: 700;
        color: var(--sld-text);
        line-height: 1.2;
    }

    .sld-mf-highlight .sld-mf-val {
        color: var(--sld-amber);
    }

    .sld-mf-rate {
        width: 64px;
        font-size: 14px;
        font-weight: 600;
        border: 1.5px solid var(--sld-border);
        border-radius: var(--sld-radius-sm);
        padding: 4px 6px;
        color: var(--sld-text);
        background: var(--sld-surface);
    }

    .sld-mf-rate:focus {
        outline: none;
        border-color: var(--sld-blue);
        box-shadow: 0 0 0 3px var(--sld-blue-light);
    }

    /* Actions + D-pad row */
    .sld-mf-body {
        display: flex;
        gap: 10px;
        align-items: flex-start;
        overflow: hidden;
    }

    .sld-mf-btns {
        flex: 1;
        min-width: 0; /* allow flex child to shrink below content size */
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .sld-mf-btn-row {
        display: flex;
        gap: 6px;
        align-items: center;
    }

    /* Icon-only buttons in floating panel and top bar */
    .sld-mobile-float .sld-btn,
    .sld-mobile-topbar .sld-btn {
        width: 44px;
        height: 44px;
        padding: 0;
        flex-shrink: 0;
        touch-action: manipulation; /* prevent double-tap zoom */
    }

    .sld-mobile-float .sld-btn-icon,
    .sld-mobile-topbar .sld-btn-icon {
        font-size: 18px;
    }

    .sld-mf-search {
        flex: 1;
        padding: 8px 10px;
        border: 1.5px solid var(--sld-border);
        border-radius: var(--sld-radius-sm);
        font-size: 16px; /* must be ≥16px to prevent iOS auto-zoom on focus */
        background: var(--sld-surface);
        color: var(--sld-text);
        min-width: 0;
    }

    .sld-mf-search:focus {
        outline: none;
        border-color: var(--sld-blue);
        box-shadow: 0 0 0 3px var(--sld-blue-light);
    }

    .sld-mf-toggle {
        display: flex;
        align-items: center;
        gap: 4px;
        font-size: 18px;
        cursor: pointer;
        padding: 0 4px;
        flex-shrink: 0;
    }

    .sld-mf-toggle input[type="checkbox"] {
        appearance: none;
        -webkit-appearance: none;
        width: 32px;
        height: 18px;
        background: var(--sld-border);
        border-radius: 9px;
        position: relative;
        cursor: pointer;
        transition: background 0.2s ease;
        flex-shrink: 0;
    }

    .sld-mf-toggle input[type="checkbox"]::after {
        content: '';
        position: absolute;
        width: 14px;
        height: 14px;
        background: white;
        border-radius: 50%;
        top: 2px;
        left: 2px;
        transition: transform 0.2s ease;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    }

    .sld-mf-toggle input[type="checkbox"]:checked {
        background: var(--sld-blue);
    }

    .sld-mf-toggle input[type="checkbox"]:checked::after {
        transform: translateX(14px);
    }

    /* D-pad — cross layout via grid, large touch-friendly buttons */
    .sld-dpad {
        display: grid;
        grid-template-areas:
            ". up ."
            "left . right"
            ". down .";
        grid-template-columns: 52px 52px 52px;
        grid-template-rows: 52px 52px 52px;
        gap: 4px;
        flex-shrink: 0;
        opacity: 0.4;
        pointer-events: none;
        transition: opacity 0.2s ease;
    }

    .sld-dpad.sld-dpad-active {
        opacity: 1;
        pointer-events: auto;
    }

    .sld-dpad-btn {
        width: 52px;
        height: 52px;
        border: 2px solid var(--sld-blue);
        border-radius: 10px;
        background: rgba(37, 99, 235, 0.12);
        font-size: 24px;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        user-select: none;
        -webkit-user-select: none;
        touch-action: manipulation;
        color: var(--sld-blue);
        box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
        transition: background 0.1s, transform 0.1s;
    }

    .sld-dpad-btn:active {
        background: var(--sld-blue);
        border-color: var(--sld-blue);
        color: #fff;
        transform: scale(0.93);
        box-shadow: 0 1px 4px rgba(37, 99, 235, 0.4);
    }

    .sld-dpad-btn[data-dir="up"]    { grid-area: up; }
    .sld-dpad-btn[data-dir="left"]  { grid-area: left; }
    .sld-dpad-btn[data-dir="right"] { grid-area: right; }
    .sld-dpad-btn[data-dir="down"]  { grid-area: down; }

    /* ── Topbar stats row fills full width ── */
    .sld-mobile-topbar .sld-mf-stats {
        flex: 1;
        min-width: 0;
    }

    /* ── Usage hint in address bar ── */
    .sld-mt-hint {
        font-size: 11px;
        color: var(--sld-text-3);
        margin: 2px 0 0;
        text-align: center;
    }

    /* ── Contextual row (delete + rotate) — hidden until panel is selected ── */
    .sld-mf-ctx-row {
        display: none;
    }

    .sld-mf-ctx-row.sld-ctx-visible {
        display: flex;
        padding-top: 8px;
        border-top: 1px solid var(--sld-border);
        margin-top: 2px;
    }
}

@media (max-width: 480px) {
    /* Even smaller screens: tighten floating panel */
    .sld-mf-val {
        font-size: 18px;
    }

    .sld-mf-rate {
        width: 52px;
        font-size: 13px;
    }

    .sld-canvas-wrapper {
        min-height: 300px;
    }
}


/* Danger button variant */
.sld-btn-danger {
    background: var(--sld-red);
    color: white;
    border: none;
}

.sld-btn-danger:hover {
    background: #dc2626;
    box-shadow: var(--sld-shadow-md);
}

.sld-btn-danger:active {
    background: #b91c1c;
}

/* Toast notification */
.sld-toast {
    position: fixed;
    left: 50%;
    bottom: 24px;
    transform: translateX(-50%) translateY(12px);
    background: rgba(17, 24, 39, 0.88);
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    padding: 8px 18px;
    border-radius: 20px;
    opacity: 0;
    pointer-events: none;
    z-index: 2000;
    white-space: nowrap;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.sld-toast.sld-toast-visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

@media (max-width: 768px) {
    .sld-toast {
        bottom: 200px; /* above mobile float */
    }
}

/* Loading State */
.sld-loading {
    text-align: center;
    padding: 40px;
    color: var(--sld-text-3);
}

.sld-loading::before {
    content: "⏳ ";
}

/* Error State */
.sld-error {
    padding: 16px 20px;
    background: #FEE2E2;
    border: 1px solid #FECACA;
    border-radius: var(--sld-radius-sm);
    color: #B91C1C;
    font-size: 14px;
}

/* Google Maps UI Customization */
.gm-style .gm-style-iw-c {
    border-radius: 8px;
}

.gm-style .gm-style-iw-d {
    overflow: hidden !important;
}


/* Animation for adding panels */
@keyframes panelAppear {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Entrance animation for new panels */
.sld-panel-enter {
    animation: panelAppear 0.2s ease;
}

/* Dragging state */
body.sld-is-dragging {
    user-select: none;
    cursor: grabbing !important;
}

/* Accessibility */
.sld-btn:focus:not(:focus-visible) {
    box-shadow: none;
}

.sld-btn:focus-visible {
    outline: 2px solid var(--sld-blue);
    outline-offset: 2px;
}

input[type="checkbox"] {
    cursor: pointer;
}

input[type="checkbox"]:focus-visible {
    outline: 2px solid var(--sld-blue);
    outline-offset: 2px;
}