/* reset default margin and padding */
body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
}

/* Use border-box sizing so inputs/selects don't accidentally overflow containers */
*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    font-family: "Arial", sans-serif;
    text-align: center;
    background-color: #1A1A1A; /* fallback colour */
    background-image: linear-gradient(to bottom, #1A1A1A, #2C2C2C);
    background-attachment: fixed; /* prevents the gradient from stretching or getting cut off */
    color: #FAFAFA;
}

/* === Container Box for Centering === */
.economics-container {
    max-width: 90%;
    margin: 0 auto;
    margin-top: 10px;
    padding: 0.1em 1.5em 1.5em 1.5em;
    background-color: #2b2b2b;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    font-family: "Montserrat", sans-serif;
    position: relative;
}

/* === Exterra Logo (Economics Simulator) === */
.economics-logo {
    position: absolute;
    top: 10px;
    left: 12px;
    display: inline-flex;
    align-items: center;
    text-decoration: none;
}

.economics-logo img {
    height: 50px;
    width: auto;
    display: block;
}

/* === Headings and Accents === */
h2 {
    color: #0d9453;
    font-family: "Josefin Sans", sans-serif;
    font-weight: 600;
    font-size: 28pt;
    margin: 8px 0 12px 0;
}

/* === Target and Resource Selector === */
.target-resource-selector {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 25px;
    margin: 0;
    padding: 0;
    max-width: 100%;
}

.selector-group {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 8px;
    min-width: 0; /* allow children to shrink/wrap instead of forcing overflow */
}

.selector-group label {
    font-family: "Montserrat", sans-serif;
    font-weight: 600;
    color: #0d9453;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    white-space: nowrap;
    flex-shrink: 0;
}

.selector-dropdown {
    padding: 6px 10px;
    background-color: #2b2b2b;
    color: #f0f0f0;
    border: 2px solid #555;
    border-radius: 4px;
    font-family: "Montserrat", sans-serif;
    font-size: 13px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    min-width: 160px;
    flex-shrink: 1;
    max-width: 100%;
}

.selector-dropdown:hover {
    border-color: #0d9453;
    box-shadow: 0 0 8px rgba(13, 148, 83, 0.3);
}

.selector-dropdown:focus {
    outline: none;
    border-color: #14d178;
    box-shadow: 0 0 10px rgba(20, 209, 120, 0.5);
}

.selector-dropdown option {
    background-color: #2b2b2b;
    color: #f0f0f0;
    padding: 8px;
}

/* === Year Input Styling === */
.year-input {
    padding: 6px 10px;
    background-color: #2b2b2b;
    color: #f0f0f0;
    border: 2px solid #555;
    border-radius: 4px;
    font-family: "Montserrat", sans-serif;
    font-size: 13px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    min-width: 80px;
    flex-shrink: 1;
    max-width: 100%;
}

.year-input:hover {
    border-color: #0d9453;
    box-shadow: 0 0 8px rgba(13, 148, 83, 0.3);
}

.year-input:focus {
    outline: none;
    border-color: #14d178;
    box-shadow: 0 0 10px rgba(20, 209, 120, 0.5);
}

/* === Chart Canvas Styling === */
canvas {
    max-width: 100%;
    background-color: #1e1e1e;
}

/* === Slider Container and Layout === */
.slider-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
    margin-top: 4px;
}

/* === Individual Slider Blocks === */
.slider-block {
    padding: 2px;
    border: 1px solid #555;
    border-radius: 6px;
    background: #2b2b2b;
    color: #f0f0f0;
}

/* === Slider Label Styling === */
.slider-label {
    margin-bottom: 2px;
}

/* === Slider Track === */
.cool-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: #ccc;
    border-radius: 4px;
    outline: none;
}

.cool-slider::-webkit-slider-runnable-track {
    height: 4px;
    background: #ccc;
    border-radius: 4px;
}

.cool-slider::-moz-range-track {
    height: 4px;
    background: #ccc;
    border-radius: 4px;
}

.cool-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #0d9453;
    border: 2px solid white;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
    transition: border-color 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
    position: relative;
    top: 50%;
    transform: translateY(-50%);
}

.cool-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #0d9453;
    border: 2px solid white;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
    transition: border-color 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

.cool-slider:hover::-webkit-slider-thumb,
.cool-slider:focus::-webkit-slider-thumb {
    border-color: #14d178;
    box-shadow: 0 0 10px 4px rgba(20, 209, 120, 0.9);
    background-color: #14d178;
}

.cool-slider:hover::-moz-range-thumb,
.cool-slider:focus::-moz-range-thumb {
    border-color: #14d178;
    box-shadow: 0 0 10px 4px rgba(20, 209, 120, 0.9);
    background-color: #14d178;
}

/* === Linked Input Styling (for Annual Launch Cost Reduction) === */
.slider-block input[type="number"] {
    width: 80px;
    padding: 0.2em 0.4em;
    font-size: 1em;
    background-color: #2b2b2b;
    color: #f0f0f0;
    border: 1px solid #555;
    border-radius: 4px;
}

/* === Launch Cost Reduction Slider Block === */
.slider-block.launch-cost-reduction {
    display: flex;
    flex-direction: column;
    gap: 0.75em;
}

/* === Linked Inputs Container === */
.linked-inputs-container {
    display: flex;
    align-items: center;
    gap: 0.5em;
    max-width: 400px;
    margin: 0 auto;
}

/* === Linked Input Groups === */
.linked-input-group {
    display: flex;
    align-items: center;
    gap: 0.25em;
    font-weight: 400;
    font-size: 0.9em;
}

/* === Print Only Text === */
.print-only-text {
    display: none;
}

/* === Main Grid Layout for Chart and Sliders === */
.main-grid {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    gap: 12px 10px;
    margin-top: 15px;
}

.chart-area {
    grid-column: 1;
    grid-row: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

/* Sliders start from the second row, spanning full width */
.slider-container {
    grid-column: 1;
    grid-row: 2;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-top: 0;
}

/* === Slider Section Visual Grouping === */
.slider-section-timeline,
.slider-section-transport,
.slider-section-resource {
    display: contents; /* Allows child elements to participate in the parent grid */
}

.slider-section-timeline .slider-block {
    border-left: 3px solid #0d9453; /* Green - Timeline/Setup */
}

.slider-section-transport .slider-block {
    border-left: 3px solid #2980B9; /* Blue - Transportation */
}

.slider-section-resource .slider-block {
    border-left: 3px solid #E67E22; /* Orange - Resource Economics */
}

/* === Section-specific Slider Control Colors === */
/* Timeline section - Green controls */
.slider-section-timeline .cool-slider::-webkit-slider-thumb {
    background: #0d9453;
}

.slider-section-timeline .cool-slider::-moz-range-thumb {
    background: #0d9453;
}

.slider-section-timeline .cool-slider:hover::-webkit-slider-thumb,
.slider-section-timeline .cool-slider:focus::-webkit-slider-thumb {
    border-color: #14d178;
    box-shadow: 0 0 10px 4px rgba(20, 209, 120, 0.9);
    background-color: #14d178;
}

.slider-section-timeline .cool-slider:hover::-moz-range-thumb,
.slider-section-timeline .cool-slider:focus::-moz-range-thumb {
    border-color: #14d178;
    box-shadow: 0 0 10px 4px rgba(20, 209, 120, 0.9);
    background-color: #14d178;
}

/* Transport section - Blue controls */
.slider-section-transport .cool-slider::-webkit-slider-thumb {
    background: #2980B9;
}

.slider-section-transport .cool-slider::-moz-range-thumb {
    background: #2980B9;
}

.slider-section-transport .cool-slider:hover::-webkit-slider-thumb,
.slider-section-transport .cool-slider:focus::-webkit-slider-thumb {
    border-color: #5FAEE6;
    box-shadow: 0 0 10px 4px rgba(77, 166, 230, 0.9);
    background-color: #5FAEE6;
}

.slider-section-transport .cool-slider:hover::-moz-range-thumb,
.slider-section-transport .cool-slider:focus::-moz-range-thumb {
    border-color: #5FAEE6;
    box-shadow: 0 0 10px 4px rgba(77, 166, 230, 0.9);
    background-color: #5FAEE6;
}

/* Resource section - Orange controls */
.slider-section-resource .cool-slider::-webkit-slider-thumb {
    background: #E67E22;
}

.slider-section-resource .cool-slider::-moz-range-thumb {
    background: #E67E22;
}

.slider-section-resource .cool-slider:hover::-webkit-slider-thumb,
.slider-section-resource .cool-slider:focus::-webkit-slider-thumb {
    border-color: #F5A64C;
    box-shadow: 0 0 10px 4px rgba(255, 213, 79, 0.9);
    background-color: #F5A64C;
}

.slider-section-resource .cool-slider:hover::-moz-range-thumb,
.slider-section-resource .cool-slider:focus::-moz-range-thumb {
    border-color: #F5A64C;
    box-shadow: 0 0 10px 4px rgba(255, 213, 79, 0.9);
    background-color: #F5A64C;
}

footer {
    padding: 10px;
    font-family: "Lato", sans-serif;
    font-size: 14px;
    font-weight: 400;
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 90%;
    margin: 0 auto;
}

footer a, a:visited {
    font-family: "Lato", sans-serif;
    text-transform: none;
    text-decoration: none;
    color: #0D9453;
}

footer a:hover {
    color: #FFFFFF;
}

.copyright {
    font-family: "Lato", sans-serif;
    font-size: 14px;
    font-weight: 400;
}

/* === Modal Styling === */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal-overlay.show {
    display: flex;
}

.modal-content {
    background-color: #2b2b2b;
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px 16px 24px;
    border-bottom: 1px solid #555;
}

.modal-header h3 {
    color: #0d9453;
    font-family: "Josefin Sans", sans-serif;
    font-weight: 600;
    font-size: 24px;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    color: #f0f0f0;
    font-size: 28px;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
}

.modal-close:hover {
    background-color: #555;
    color: #0d9453;
}

.modal-body {
    padding: 20px 24px 24px 24px;
    text-align: left;
}

.assumptions-intro {
    color: #f0f0f0;
    font-family: "Montserrat", sans-serif;
    font-size: 14px;
    line-height: 1.6;
    margin: 0 0 16px 0;
}

.assumptions-list {
    list-style-type: disc;
    padding-left: 20px;
    margin: 0;
    color: #f0f0f0;
    font-family: "Montserrat", sans-serif;
    font-size: 14px;
    line-height: 1.6;
    text-align: left;
}

.assumptions-list li {
    margin-bottom: 12px;
}

.assumptions-list li:last-child {
    margin-bottom: 0;
}

@media (max-width: 1100px) {
    /* Tablet + smaller: stack logo above heading to avoid overlap/crowding */
    .economics-logo {
        position: static;
        display: flex;
        justify-content: center;
        margin-top: 8px;
        margin-bottom: 4px;
    }

    h2 {
        margin-top: 6px;
    }

    .target-resource-selector {
        /* iPad portrait + mobile landscape: keep within bounds by wrapping */
        gap: 14px 18px;
        padding: 0 8px;
    }

    .main-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
    }

    .chart-area {
        grid-column: 1;
    }

    .slider-container {
        grid-column: 1;
    }
}

/* === Mobile Modal Responsiveness === */
@media (max-width: 700px) {
    .modal-content {
        width: 95%;
        max-height: 85vh;
    }

    .modal-header {
        padding: 16px 20px 12px 20px;
    }

    .modal-header h3 {
        font-size: 20px;
    }

    .modal-body {
        padding: 16px 20px 20px 20px;
    }

    .assumptions-intro {
        font-size: 13px;
        margin: 0 0 12px 0;
    }

    .assumptions-list {
        font-size: 13px;
        padding-left: 16px;
    }

    footer {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
}

@media (max-width: 700px) {
    .economics-logo {
        position: static;
        display: flex;
        justify-content: center;
        margin-top: 8px;
        margin-bottom: 4px;
    }

    .target-resource-selector {
        flex-direction: column;
        gap: 15px;
        padding: 0;
        align-items: center;
    }

    .selector-dropdown {
        min-width: 180px;
        font-size: 13px;
    }

    .year-input {
        min-width: 100px;
        font-size: 13px;
    }

    .selector-group {
        justify-content: center;
    }

    .main-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
        gap: 18px 0;
    }

    .chart-area {
        grid-column: 1;
        grid-row: 1;
        min-height: 250px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .chart-area canvas {
        min-height: 250px;
        max-height: 300px;
        width: 100%;
        height: auto !important;
    }

    .slider-container {
        grid-column: 1;
        grid-row: 2;
        grid-template-columns: 1fr;
        gap: 12px;
    }
}

@media (max-width: 480px) {
    .target-resource-selector {
        gap: 10px;
        padding: 0;
        align-items: center;
    }

    .selector-dropdown {
        min-width: 150px;
        font-size: 12px;
        padding: 6px 10px;
    }

    .year-input {
        min-width: 80px;
        font-size: 12px;
        padding: 6px 8px;
    }

    .selector-group {
        justify-content: center;
    }

    .selector-group label {
        font-size: 12px;
    }

    .economics-container {
        max-width: 95%;
        padding: 0.1em 1em 1em 1em;
        margin-top: 10px;
    }

    .chart-area {
        min-height: 200px;
    }

    .chart-area canvas {
        min-height: 200px;
        max-height: 250px;
        height: auto !important;
    }
}

@media print {
    /* Universal border/shadow reset for print */
    * {
        box-shadow: none !important;
        -webkit-box-shadow: none !important;
        -moz-box-shadow: none !important;
    }

    /* Hide sliders but keep their labels */
    .cool-slider {
        display: none !important;
    }

    /* Hide the linked input fields for launch cost reduction */
    .slider-block input[type="number"] {
        display: none !important;
    }

    /* Hide the linked inputs container */
    .linked-inputs-container {
        display: none !important;
    }

    /* Special handling for launch cost reduction in print */
    .slider-block.launch-cost-reduction .slider-label {
        display: none !important;
    }

    .slider-block.launch-cost-reduction .print-only-text {
        display: block !important;
        font-weight: 600 !important;
        color: #333 !important;
        font-size: 11px !important;
        margin-top: 2px !important;
    }

    /* Style slider blocks for print - make them more compact */
    .slider-block {
        padding: 2px !important;
        margin-bottom: 6px !important;
        border: 1px solid #ccc !important;
        background: #f9f9f9 !important;
        color: #333 !important;
        border-radius: 4px !important;
        font-size: 11px !important;
    }

    /* Maintain section borders in print */
    .slider-section-timeline .slider-block {
        border-left: 3px solid #0d9453 !important; /* Green - Timeline/Setup */
    }

    .slider-section-transport .slider-block {
        border-left: 3px solid #2980B9 !important; /* Blue - Transportation */
    }

    .slider-section-resource .slider-block {
        border-left: 3px solid #E67E22 !important; /* Orange - Resource Economics */
    }

    /* Make slider labels more prominent for print */
    .slider-label {
        font-weight: 600 !important;
        color: #333 !important;
        margin-bottom: 2px !important;
        font-size: 11px !important;
    }

    /* Optimize main grid for landscape printing */
    .main-grid {
        grid-template-columns: 1fr !important;
        grid-template-rows: auto 1fr !important;
        gap: 8px !important;
        margin-top: 10px !important;
    }

    /* Chart area - full width, first row */
    .chart-area {
        grid-column: 1 !important;
        grid-row: 1 !important;
        height: 250px !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
    }

    /* Slider container - full width, second row */
    .slider-container {
        grid-column: 1 !important;
        grid-row: 2 !important;
        grid-template-columns: repeat(3, 1fr) !important;
        gap: 6px !important;
        margin-top: 10px !important;
    }

    /* Style the economics container for print */
    .economics-container {
        max-width: calc(100% - 4px) !important;
        width: calc(100% - 4px) !important;
        margin: 2px !important;
        padding: 10px !important;
        background-color: white !important;
        box-shadow: none !important;
        border: none !important;
        border-radius: 0 !important;
        outline: none !important;
        -webkit-box-shadow: none !important;
        -moz-box-shadow: none !important;
    }

    /* Style headings for print */
    h2 {
        color: #333 !important;
    }

    /* Style canvas for print */
    canvas {
        background-color: white !important;
        border: 1px solid #ddd !important;
        max-width: 100% !important;
        max-height: 100% !important;
        height: auto !important;
    }

    /* Ensure proper page setup for landscape */
    @page {
        size: landscape;
        margin: 15mm;
    }

    body {
        margin: 0 !important;
        padding: 0 !important;
        background: white !important;
        color: #333 !important;
        font-size: 11px !important;
    }

    html {
        margin: 0 !important;
        padding: 0 !important;
        background: white !important;
    }

    /* Additional reset for any potential container styling */
    body .economics-container {
        box-shadow: none !important;
        border: none !important;
        border-radius: 0 !important;
        outline: none !important;
        -webkit-box-shadow: none !important;
        -moz-box-shadow: none !important;
        background-color: white !important;
    }

    /* Hide any no-print elements */
    .no-print {
        display: none !important;
    }

    /* Style target resource selector for print */
    .target-resource-selector {
        padding: 0 !important;
        margin: 0 !important;
    }

    /* Hide dropdown labels and selects in print */
    .selector-group label {
        display: none !important;
    }

    .selector-dropdown {
        display: none !important;
    }

    /* Hide year selector groups completely in print */
    .selector-group.year-selector {
        display: none !important;
    }

    /* Show print-only text for dropdowns */
    .target-resource-selector .print-only-text {
        display: block !important;
        font-weight: 600 !important;
        color: #333 !important;
        font-size: 12px !important;
        margin: 2px 0 !important;
        border: none !important;
        background: none !important;
        padding: 0 !important;
    }

    /* Hide assumptions link and center copyright in print */
    #assumptions-link {
        display: none !important;
    }

    footer {
        justify-content: center !important;
    }
}