:root {
    color-scheme: light;

    --page-bg: #edf4f8;
    --page-bg-deep: #dce9f1;
    --page-glow-blue: rgba(25, 170, 230, 0.19);
    --page-glow-orange: rgba(255, 132, 37, 0.17);
    --page-texture-opacity: 0.05;

    --panel: rgba(250, 253, 255, 0.92);
    --panel-solid: #f9fcfe;
    --panel-soft: rgba(233, 243, 249, 0.82);
    --panel-raised: rgba(255, 255, 255, 0.96);
    --surface-hover: rgba(216, 235, 245, 0.76);

    --text: #1a2a38;
    --heading: #102131;
    --muted: #607486;
    --muted-strong: #40586b;
    --border: rgba(38, 75, 101, 0.18);
    --border-strong: rgba(36, 84, 116, 0.3);

    --blue: #087fbc;
    --blue-bright: #0da7e8;
    --blue-soft: rgba(13, 167, 232, 0.12);
    --orange: #e86d16;
    --orange-bright: #ff8a24;
    --orange-soft: rgba(255, 138, 36, 0.13);
    --green: #228f62;
    --green-bright: #31ae78;
    --green-soft: rgba(49, 174, 120, 0.13);
    --red: #c94b4b;
    --red-soft: rgba(201, 75, 75, 0.11);

    --input-bg: rgba(255, 255, 255, 0.86);
    --input-border: rgba(32, 72, 100, 0.23);
    --focus-ring: rgba(13, 167, 232, 0.32);
    --selection: rgba(13, 167, 232, 0.19);

    --shadow-panel: 0 18px 48px rgba(25, 62, 87, 0.10);
    --shadow-soft: 0 8px 24px rgba(30, 64, 88, 0.08);
    --shadow-button: 0 10px 24px rgba(0, 127, 188, 0.22);

    --radius-panel: 16px;
    --radius-card: 12px;
    --radius-control: 9px;
    --page-width: 1160px;
}

:root[data-theme="dark"] {
    color-scheme: dark;

    --page-bg: #0c1420;
    --page-bg-deep: #07101a;
    --page-glow-blue: rgba(0, 166, 231, 0.16);
    --page-glow-orange: rgba(255, 126, 29, 0.12);
    --page-texture-opacity: 0.02;

    --panel: rgba(19, 31, 45, 0.91);
    --panel-solid: #142231;
    --panel-soft: rgba(31, 48, 64, 0.73);
    --panel-raised: rgba(24, 39, 55, 0.97);
    --surface-hover: rgba(44, 64, 81, 0.86);

    --text: #e9f1f6;
    --heading: #f6fafc;
    --muted: #9eb0bd;
    --muted-strong: #c0ccd4;
    --border: rgba(171, 204, 225, 0.14);
    --border-strong: rgba(173, 213, 235, 0.25);

    --blue: #38bdf8;
    --blue-bright: #57ccff;
    --blue-soft: rgba(56, 189, 248, 0.13);
    --orange: #fb8b3d;
    --orange-bright: #ffa45f;
    --orange-soft: rgba(251, 139, 61, 0.13);
    --green: #43c98b;
    --green-bright: #64dda3;
    --green-soft: rgba(67, 201, 139, 0.13);
    --red: #ff7a7a;
    --red-soft: rgba(255, 122, 122, 0.11);

    --input-bg: rgba(8, 18, 29, 0.72);
    --input-border: rgba(178, 208, 226, 0.18);
    --focus-ring: rgba(56, 189, 248, 0.34);
    --selection: rgba(56, 189, 248, 0.22);

    --shadow-panel: 0 20px 54px rgba(0, 0, 0, 0.25);
    --shadow-soft: 0 10px 28px rgba(0, 0, 0, 0.18);
    --shadow-button: 0 10px 28px rgba(24, 174, 235, 0.18);
}

* {
    box-sizing: border-box;
}

html {
    min-width: 0;
    min-height: 100%;
    scrollbar-gutter: stable;
    interpolate-size: allow-keywords;
    background: var(--page-bg);
}

body {
    position: relative;
    isolation: isolate;
    min-width: 0;
    min-height: 100vh;
    margin: 0;
    color: var(--text);
    font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at 10% -8%, var(--page-glow-blue), transparent 31rem),
        radial-gradient(circle at 92% 8%, var(--page-glow-orange), transparent 28rem),
        linear-gradient(155deg, var(--page-bg), var(--page-bg-deep));
    transition: color 160ms ease, background-color 160ms ease;
}

.page-background {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image: url("https://images.unsplash.com/photo-1708342421457-9c59f4843fe1?q=80&w=2670&auto=format&fit=crop&ixlib=rb-4.1.0&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D");
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    opacity: var(--page-texture-opacity);
    transform: translateZ(0);
}

::selection {
    background: var(--selection);
}

button,
input,
select {
    font: inherit;
}

button,
summary,
a,
input,
select {
    -webkit-tap-highlight-color: transparent;
}

button {
    color: inherit;
}

a {
    color: var(--blue);
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

a:hover {
    color: var(--blue-bright);
}

.page-shell {
    position: relative;
    z-index: 1;
    width: min(var(--page-width), calc(100% - 40px));
    margin: 0 auto;
    padding: 32px 0 24px;
}

.panel {
    min-width: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-panel);
    background: var(--panel);
    box-shadow: var(--shadow-panel);
}

.hero {
    position: relative;
    display: flex;
    align-items: center;
    gap: 24px;
    min-height: 156px;
    padding: 26px 30px;
    overflow: hidden;
}

.hero::after {
    content: "";
    position: absolute;
    top: -90px;
    right: -60px;
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background:
        radial-gradient(circle at 45% 45%, var(--orange-soft), transparent 58%),
        radial-gradient(circle at 70% 65%, var(--blue-soft), transparent 62%);
    pointer-events: none;
}

.hero-icon {
    position: relative;
    z-index: 1;
    display: block;
    flex: 0 0 auto;
    width: 104px;
    height: 104px;
    object-fit: contain;
}

.hero-copy {
    position: relative;
    z-index: 1;
    max-width: 780px;
}

.eyebrow,
.section-kicker {
    margin: 0 0 6px;
    color: var(--orange);
    font-size: 0.74rem;
    font-weight: 800;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.hero h1,
.panel-heading h2,
.about-intro h2,
.about-section h3,
.section-title {
    color: var(--heading);
}

.hero h1 {
    margin: 0;
    font-size: clamp(2.1rem, 5vw, 3.35rem);
    line-height: 1;
    letter-spacing: -0.045em;
}

.hero-subtitle {
    max-width: 750px;
    margin: 13px 0 0;
    color: var(--muted-strong);
    font-size: 1rem;
    line-height: 1.55;
}

.about-panel {
    margin: 14px 0 18px;
    overflow: hidden;
}

.about-panel > summary,
.advanced-results > summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    cursor: pointer;
    list-style: none;
    user-select: none;
}

.about-panel > summary::-webkit-details-marker,
.advanced-results > summary::-webkit-details-marker {
    display: none;
}

.about-panel > summary {
    position: relative;
    padding: 15px 20px;
    color: var(--heading);
    font-weight: 800;
}

/*
 * Disclosure indicator.
 *
 * The circular frame remains stationary while the two arms unfold from a
 * downward chevron, pass through horizontal, and refold upward. The custom
 * properties below keep the animation geometry and timing easy to tune.
 */
.details-indicator {
    --indicator-duration: 300ms;
    --indicator-easing: cubic-bezier(0.2, 0.75, 0.25, 1);
    --indicator-hinge-offset: 3.5px;
    --indicator-arm-overlap: 0.75px;

    flex: 0 0 auto;
    display: grid;
    place-items: center;
    width: 28px;
    height: 28px;
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--blue);
    background: var(--panel-soft);
}

.details-indicator-symbol {
    position: relative;
    width: 16px;
    height: 12px;
    transform: translateY(var(--indicator-hinge-offset));
    transition: transform var(--indicator-duration) var(--indicator-easing);
}

details[open] > summary .details-indicator-symbol {
    transform: translateY(calc(0px - var(--indicator-hinge-offset)));
}

.details-indicator-arm {
    position: absolute;
    top: 50%;
    width: 10px;
    height: 2px;
    border-radius: 999px;
    background: currentColor;
    transition: transform var(--indicator-duration) var(--indicator-easing);
}

.details-indicator-arm-left {
    right: calc(50% - var(--indicator-arm-overlap));
    transform: rotate(45deg);
    transform-origin: right center;
}

.details-indicator-arm-right {
    left: calc(50% - var(--indicator-arm-overlap));
    transform: rotate(-45deg);
    transform-origin: left center;
}

details[open] > summary .details-indicator-arm-left {
    transform: rotate(-45deg);
}

details[open] > summary .details-indicator-arm-right {
    transform: rotate(45deg);
}

/*
 * Animate disclosure content without hard-coding a maximum height.
 * Unsupported browsers fall back to the native instant details behavior.
 */
.about-panel::details-content,
.advanced-results::details-content {
    block-size: 0;
    overflow: hidden;
    opacity: 0;
    transition:
        block-size 260ms cubic-bezier(0.2, 0.75, 0.25, 1),
        opacity 180ms ease,
        content-visibility 260ms;
    transition-behavior: allow-discrete;
}

.about-panel[open]::details-content,
.advanced-results[open]::details-content {
    block-size: auto;
    opacity: 1;
}

.about-panel > summary:hover,
.advanced-results > summary:hover {
    background: var(--surface-hover);
}

.about-panel > summary small {
    margin-left: auto;
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 600;
}

.about-content {
    padding: 4px 22px 22px;
    border-top: 1px solid var(--border);
}

.about-intro {
    max-width: 850px;
    padding-top: 20px;
}

.about-intro h2 {
    margin: 0;
    font-size: 1.45rem;
    letter-spacing: -0.025em;
}

.about-intro>p:last-child {
    margin: 10px 0 0;
    color: var(--muted-strong);
    line-height: 1.65;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 18px;
}

.about-section {
    min-width: 0;
    padding: 17px 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    background: var(--panel-soft);
}

.about-section h3 {
    margin: 0 0 12px;
    font-size: 0.98rem;
}

.quick-start-list {
    display: grid;
    gap: 8px;
    margin: 0;
    padding-left: 1.25rem;
    color: var(--muted-strong);
    font-size: 0.88rem;
    line-height: 1.55;
}

.range-guide {
    display: grid;
    gap: 9px;
}

.range-guide-item {
    position: relative;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 2px 12px;
    padding: 10px 12px 10px 15px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--panel-raised);
    overflow: hidden;
}

.range-guide-item::before {
    content: "";
    position: absolute;
    inset: 0 auto 0 0;
    width: 4px;
}

.range-guide-typical::before {
    background: var(--blue);
}

.range-guide-conservative::before {
    background: var(--orange);
}

.range-guide-item span {
    color: var(--muted);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.range-guide-item strong {
    color: var(--heading);
    font-size: 0.86rem;
}

.range-guide-item small {
    grid-column: 1 / -1;
    color: var(--muted);
    font-size: 0.78rem;
    line-height: 1.4;
}

.about-note {
    margin-top: 16px;
    padding: 13px 15px;
    border-left: 4px solid var(--green);
    border-radius: 0 10px 10px 0;
    color: var(--muted-strong);
    background: var(--green-soft);
    font-size: 0.86rem;
    line-height: 1.55;
}

.about-note strong {
    color: var(--heading);
}

.about-note-warning {
    border-left-color: var(--orange);
    background: var(--orange-soft);
}

.calculator-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.18fr) minmax(340px, 0.82fr);
    gap: 18px;
    align-items: start;
}

.input-panel,
.estimate-panel {
    padding: 22px;
}

.estimate-panel {
    position: sticky;
    top: 18px;
}

.panel-heading {
    margin-bottom: 18px;
}

.panel-heading h2 {
    margin: 0;
    font-size: 1.35rem;
    letter-spacing: -0.025em;
}

.panel-heading>p:last-child {
    margin: 6px 0 0;
    color: var(--muted);
    font-size: 0.87rem;
    line-height: 1.5;
}

.form-section {
    position: relative;
    margin: 0 0 13px;
    padding: 17px;
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    background: var(--panel-soft);
    overflow: visible;
}

.form-section::before {
    content: "";
    position: absolute;
    inset: 0 auto 0 0;
    width: 4px;
    border-radius: var(--radius-card) 0 0 var(--radius-card);
}

.form-section-blue::before {
    background: var(--blue);
}

.form-section-green::before {
    background: var(--green);
}

.form-section-orange::before {
    background: var(--orange);
}

.form-section-heading {
    display: flex;
    align-items: center;
    gap: 11px;
    margin-bottom: 15px;
}

.form-step {
    flex: 0 0 auto;
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border: 1px solid var(--border);
    border-radius: 9px;
    color: var(--muted);
    background: var(--panel-raised);
    font-size: 0.71rem;
    font-weight: 900;
    letter-spacing: 0.06em;
}

.section-title {
    margin: 0;
    font-size: 0.96rem;
    letter-spacing: -0.01em;
}

.form-section-heading p {
    margin: 2px 0 0;
    color: var(--muted);
    font-size: 0.77rem;
}

.field {
    position: relative;
    min-width: 0;
}

.field+.field {
    margin-top: 12px;
}

.field-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.field-row .field+.field {
    margin-top: 0;
}

.field-row-three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.container-fields {
    grid-template-columns: 0.9fr 1fr 1.15fr;
}

.container-fields label {
    white-space: nowrap;
}

label,
.standalone-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 6px;
    color: var(--muted-strong);
    font-size: 0.78rem;
    font-weight: 750;
}

input[type="text"],
input[type="number"],
select {
    width: 100%;
    min-width: 0;
    height: 42px;
    padding: 0 11px;
    border: 1px solid var(--input-border);
    border-radius: var(--radius-control);
    outline: none;
    color: var(--text);
    background: var(--input-bg);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
    transition: border-color 130ms ease, box-shadow 130ms ease, background-color 130ms ease;
}

input::placeholder {
    color: var(--muted);
    opacity: 0.72;
}

input:focus,
select:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 3px var(--focus-ring);
}

input[type="number"] {
    font-variant-numeric: tabular-nums;
}

input[type="checkbox"] {
    accent-color: var(--blue);
}

.daily-toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 14px;
    padding: 11px 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--panel-raised);
}

.daily-toggle-row .standalone-label {
    margin: 0;
}

.daily-toggle-row small {
    display: block;
    margin-top: 2px;
    color: var(--muted);
    font-size: 0.72rem;
    line-height: 1.4;
}

.switch-control {
    flex: 0 0 auto;
    margin: 0;
    cursor: pointer;
}

.switch-control input {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

.switch-track {
    position: relative;
    display: block;
    width: 46px;
    height: 26px;
    border: 1px solid var(--input-border);
    border-radius: 999px;
    background: var(--panel-soft);
    transition: background-color 150ms ease, border-color 150ms ease, box-shadow 150ms ease;
}

.switch-thumb {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--muted);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    transition: transform 150ms ease, background-color 150ms ease;
}

.switch-control input:checked+.switch-track {
    border-color: var(--blue);
    background: var(--blue-soft);
}

.switch-control input:checked+.switch-track .switch-thumb {
    transform: translateX(20px);
    background: var(--blue);
}

.switch-control input:focus-visible+.switch-track {
    box-shadow: 0 0 0 3px var(--focus-ring);
}

.tooltip {
    position: relative;
    display: inline-grid;
    place-items: center;
    width: 17px;
    height: 17px;
    border: 1px solid var(--border-strong);
    border-radius: 50%;
    color: var(--muted);
    background: var(--panel-raised);
    font-size: 0.66rem;
    font-weight: 850;
    line-height: 1;
    cursor: help;
}

.tooltip::after {
    content: attr(data-tip);
    position: absolute;
    z-index: 40;
    left: 50%;
    bottom: calc(100% + 9px);
    width: min(270px, 70vw);
    padding: 9px 10px;
    border: 1px solid var(--border-strong);
    border-radius: 8px;
    color: var(--text);
    background: var(--panel-solid);
    box-shadow: var(--shadow-soft);
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1.42;
    text-align: left;
    white-space: normal;
    transform: translate(-50%, 5px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 120ms ease, transform 120ms ease, visibility 120ms ease;
}

.tooltip:hover::after,
.tooltip:focus-visible::after {
    transform: translate(-50%, 0);
    opacity: 1;
    visibility: visible;
}

.collection-field {
    z-index: 10;
    margin-bottom: 12px;
}

.combobox {
    position: relative;
}

.combobox-control {
    position: relative;
}

.combobox-control input {
    padding-right: 42px;
}

.combobox-toggle {
    position: absolute;
    top: 4px;
    right: 4px;
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    padding: 0;
    border: 0;
    border-radius: 7px;
    color: var(--muted);
    background: transparent;
    cursor: pointer;
    font-size: 0.9rem;
}

.combobox-toggle:hover,
.combobox-toggle:focus-visible {
    color: var(--heading);
    background: var(--surface-hover);
}

.combobox-toggle.clear {
    color: var(--orange);
    font-size: 1.15rem;
}

.combobox-options {
    position: absolute;
    z-index: 30;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    max-height: 310px;
    margin: 0;
    padding: 5px;
    border: 1px solid var(--border-strong);
    border-radius: 10px;
    overflow-y: auto;
    list-style: none;
    background: var(--panel-solid);
    box-shadow: 0 18px 44px rgba(0, 0, 0, 0.18);
}

.combobox-option {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 50px;
    padding: 7px 9px;
    border-radius: 7px;
    cursor: pointer;
}

.combobox-option:hover,
.combobox-option.active {
    background: var(--surface-hover);
}

.combobox-option.selected {
    background: var(--blue-soft);
}

.combobox-option-image {
    flex: 0 0 auto;
    width: 36px;
    height: 36px;
    object-fit: contain;
}

.combobox-option-text {
    min-width: 0;
}

.combobox-option-name {
    color: var(--heading);
    font-size: 0.82rem;
    font-weight: 750;
}

.combobox-option-details {
    margin-top: 2px;
    color: var(--muted);
    font-size: 0.7rem;
}

.combobox-empty {
    padding: 12px;
    color: var(--muted);
    font-size: 0.8rem;
    text-align: center;
}

.primary-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    min-height: 46px;
    margin-top: 4px;
    padding: 10px 18px;
    border: 1px solid color-mix(in srgb, var(--blue) 75%, transparent);
    border-radius: 10px;
    color: #fff;
    background: linear-gradient(135deg, var(--blue), color-mix(in srgb, var(--blue) 70%, var(--green)));
    box-shadow: var(--shadow-button);
    cursor: pointer;
    font-weight: 800;
    transition: transform 120ms ease, filter 120ms ease, box-shadow 120ms ease;
}

.primary-button:hover {
    filter: brightness(1.06) saturate(1.05);
    transform: translateY(-1px);
}

.primary-button:active {
    transform: translateY(0);
}

.primary-button:focus-visible,
.theme-options button:focus-visible,
.about-panel > summary:focus-visible,
.advanced-results > summary:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 2px;
}

.error {
    display: none;
    margin-top: 12px;
    padding: 10px 12px;
    border: 1px solid color-mix(in srgb, var(--red) 38%, transparent);
    border-radius: 9px;
    color: var(--red);
    background: var(--red-soft);
    font-size: 0.8rem;
    font-weight: 650;
    line-height: 1.45;
}

.results {
    display: grid;
    gap: 12px;
    opacity: 0;
    transform: translateY(6px);
    transition: opacity 170ms ease, transform 170ms ease;
}

.results.results-visible {
    opacity: 1;
    transform: translateY(0);
}

.expected-result {
    position: relative;
    padding: 18px;
    border: 1px solid color-mix(in srgb, var(--blue) 31%, var(--border));
    border-radius: 14px;
    background:
        linear-gradient(135deg, var(--blue-soft), transparent 62%),
        var(--panel-raised);
    overflow: hidden;
}

.expected-result::after {
    content: "";
    position: absolute;
    right: -32px;
    bottom: -56px;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--green-soft), transparent 69%);
    pointer-events: none;
}

.expected-result-topline {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.result-label {
    color: var(--muted-strong);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.055em;
    text-transform: uppercase;
}

.result-badge {
    padding: 4px 7px;
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--blue);
    background: var(--panel-soft);
    font-size: 0.65rem;
    font-weight: 800;
    white-space: nowrap;
}

.result-value {
    position: relative;
    z-index: 1;
    margin-top: 5px;
    color: var(--heading);
    font-size: 1.55rem;
    font-weight: 850;
    line-height: 1.12;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.035em;
}

.result-value.primary {
    margin-top: 8px;
    color: var(--blue);
    font-size: clamp(2.35rem, 7vw, 3.8rem);
}

.explanation {
    position: relative;
    z-index: 1;
    margin: 6px 0 0;
    color: var(--muted);
    font-size: 0.75rem;
    line-height: 1.48;
}

.cost-result {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 12px 14px;
    border: 1px solid color-mix(in srgb, var(--orange) 27%, var(--border));
    border-radius: 11px;
    background: var(--orange-soft);
}

.cost-result .result-value {
    margin: 0;
    color: var(--orange);
    font-size: 1.25rem;
    text-align: right;
}

.luck-spectrum {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.luck-card {
    position: relative;
    min-width: 0;
    padding: 13px 14px;
    border: 1px solid var(--border);
    border-radius: 11px;
    background: var(--panel-soft);
}

.luck-card-heading {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 0 7px;
    color: var(--heading);
    font-size: 0.76rem;
    font-weight: 800;
}

.luck-card-heading small {
    grid-column: 2;
    color: var(--muted);
    font-size: 0.65rem;
    font-weight: 650;
}

.luck-dot {
    grid-row: 1 / 3;
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.lucky-card .luck-dot {
    background: var(--green);
    box-shadow: 0 0 0 4px var(--green-soft);
}

.unlucky-card .luck-dot {
    background: var(--orange);
    box-shadow: 0 0 0 4px var(--orange-soft);
}

.luck-card .result-value {
    margin-top: 10px;
}

.small-result-value {
    margin-top: 2px;
    color: var(--muted-strong);
    font-size: 0.77rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.advanced-results {
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 11px;
    background: var(--panel-soft);
}

.advanced-results > summary {
    padding: 11px 12px;
    color: var(--heading);
    font-size: 0.78rem;
    font-weight: 800;
}

.details-body {
    padding: 12px;
    border-top: 1px solid var(--border);
}

.advanced-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
}

.advanced-stat {
    min-width: 0;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 9px;
    background: var(--panel-raised);
}

.advanced-stat .result-label {
    font-size: 0.64rem;
}

.advanced-stat .result-value {
    margin-top: 5px;
    font-size: 1.15rem;
}

.advanced-stat .explanation {
    font-size: 0.68rem;
}

.simulation-summary,
.simulation-time {
    margin: 10px 2px 0;
    color: var(--muted);
    font-size: 0.7rem;
    line-height: 1.45;
}

.simulation-time {
    margin-top: 4px;
    opacity: 0.78;
}

.empty-state {
    display: grid;
    justify-items: center;
    padding: 28px 20px 24px;
    color: var(--muted);
    text-align: center;
}

.empty-state-mark {
    display: grid;
    place-items: center;
    width: 76px;
    height: 76px;
    margin-bottom: 13px;
    border: 1px solid var(--border-strong);
    border-radius: 22px;
    color: var(--blue);
    background:
        linear-gradient(145deg, var(--blue-soft), var(--green-soft)),
        var(--panel-raised);
    box-shadow: var(--shadow-soft);
    font-size: 1.25rem;
    font-weight: 900;
    transform: rotate(-3deg);
}

.empty-state strong {
    color: var(--heading);
    font-size: 0.9rem;
}

.empty-state p {
    max-width: 270px;
    margin: 5px 0 0;
    font-size: 0.78rem;
    line-height: 1.45;
}

.site-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    margin-top: 18px;
    padding: 15px 4px 2px;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.76rem;
}

.footer-copy {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 5px 8px;
}

.footer-copy a {
    color: var(--muted-strong);
}

.theme-control {
    display: flex;
    align-items: center;
    gap: 8px;
}

.theme-label {
    color: var(--muted);
    font-size: 0.7rem;
    font-weight: 750;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.theme-options {
    display: inline-flex;
    padding: 3px;
    border: 1px solid var(--border);
    border-radius: 9px;
    background: var(--panel-soft);
}

.theme-options button {
    min-width: 50px;
    padding: 5px 8px;
    border: 0;
    border-radius: 6px;
    color: var(--muted);
    background: transparent;
    cursor: pointer;
    font-size: 0.68rem;
    font-weight: 750;
}

.theme-options button:hover {
    color: var(--heading);
}

.theme-options button[aria-pressed="true"] {
    color: var(--heading);
    background: var(--panel-raised);
    box-shadow: 0 2px 7px rgba(0, 0, 0, 0.08);
}

.hidden {
    display: none !important;
}

@media (max-width: 940px) {
    .calculator-layout {
        grid-template-columns: 1fr;
    }

    .estimate-panel {
        position: static;
        order: -1;
    }

    .field-row-three {
        grid-template-columns: repeat(3, minmax(120px, 1fr));
    }
}

@media (max-width: 720px) {
    .page-shell {
        width: min(100% - 24px, var(--page-width));
        padding-top: 18px;
    }

    .hero {
        gap: 17px;
        min-height: 0;
        padding: 20px;
    }

    .hero-icon {
        width: 82px;
        height: 82px;
    }

    .hero h1 {
        font-size: clamp(2rem, 9vw, 2.75rem);
    }

    .hero-subtitle {
        font-size: 0.9rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .about-panel > summary {
        align-items: flex-start;
    }

    .about-panel > summary small {
        display: none;
    }

    .input-panel,
    .estimate-panel {
        padding: 17px;
    }

    .field-row-three,
    .container-fields {
        grid-template-columns: 1fr;
    }

    .field-row-three .field+.field {
        margin-top: 0;
    }

    .site-footer {
        align-items: flex-start;
        flex-direction: column;
        gap: 12px;
    }

    .theme-control {
        align-self: flex-end;
    }
}

@media (max-width: 520px) {
    .page-shell {
        width: min(100% - 18px, var(--page-width));
        padding-top: 10px;
    }

    .panel {
        border-radius: 13px;
    }

    .hero {
        align-items: flex-start;
        gap: 13px;
        padding: 16px;
    }

    .hero-icon {
        width: 66px;
        height: 66px;
    }

    .eyebrow {
        margin-bottom: 4px;
        font-size: 0.64rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        margin-top: 8px;
        font-size: 0.78rem;
        line-height: 1.45;
    }

    .about-panel > summary {
        padding: 13px 15px;
        font-size: 0.85rem;
    }

    .about-content {
        padding: 3px 14px 14px;
    }

    .input-panel,
    .estimate-panel {
        padding: 14px;
    }

    .panel-heading {
        margin-bottom: 14px;
    }

    .form-section {
        padding: 14px;
    }

    .field-row {
        grid-template-columns: 1fr;
    }

    .field-row .field+.field {
        margin-top: 0;
    }

    .daily-toggle-row {
        align-items: center;
    }

    .luck-spectrum {
        grid-template-columns: 1fr;
    }

    .advanced-grid {
        grid-template-columns: 1fr;
    }

    .expected-result-topline {
        align-items: flex-start;
        flex-direction: column;
        gap: 5px;
    }

    .result-badge {
        align-self: flex-start;
    }

    .cost-result {
        align-items: flex-start;
        flex-direction: column;
        gap: 4px;
    }

    .cost-result .result-value {
        text-align: left;
    }

    .tooltip::after {
        position: fixed;
        z-index: 100;
        left: 12px;
        right: 12px;
        bottom: 12px;
        width: auto;
        transform: translateY(8px);
    }

    .tooltip:hover::after,
    .tooltip:focus-visible::after {
        transform: translateY(0);
    }

    .footer-copy {
        font-size: 0.7rem;
    }

    .theme-control {
        width: 100%;
        justify-content: space-between;
    }

    .theme-options {
        margin-left: auto;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }

    .about-panel::details-content,
    .advanced-results::details-content {
        transition: none;
    }
}