:root {
    --bg: 20 12 12;
    --fg: 250 240 240;
    --muted: 180 150 150;
    --card: 28 16 16;
    --border: 64 32 32;
    --primary: 220 38 38;
    --ring: 239 68 68;
    --radius: 16px;
    --shadow: 0 10px 30px rgba(220, 38, 38, .35);
    --gap: 20px;
    --range-height: 8px;
    --thumb-size: 18px;
    --range-track: rgba(255, 255, 255, .08);
    --range-fill: rgb(var(--primary));
    --range-thumb: #0b0b0f;
    --range-glow: rgba(239, 68, 68, .25);
}


* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
    scroll-behavior: smooth !important;
}

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    color: rgb(var(--fg));
    background: radial-gradient(circle at 50% 50%,
            rgba(0, 0, 0, 0),
            rgba(0, 0, 0, 0.6) 90%),
        rgb(var(--bg));
    background-repeat: no-repeat;
    background-attachment: fixed;
}

section:first-child {
    margin-bottom: 12px;
}

/* App shell */
.app {
    min-height: 100%;
    display: grid;
    grid-template-rows: auto 1fr auto;
}

.app__header,
.app__footer {
    width: min(1100px, 100%);
    margin-inline: auto;
    padding: 28px 20px;
}

.app__header {
    width: min(1100px, 100%);
    margin-inline: auto;
    padding: 28px 20px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 24px;
}

.header__left {
    display: grid;
    row-gap: 8px;
}

.header__top {
    display: flex;
    align-items: center;
    column-gap: 12px;
}

.logo {
    height: 48px;
    width: auto;
    flex-shrink: 0;
}

.app__header h1 {
    margin: 0;
    font-size: clamp(22px, 4vw, 32px);
    line-height: 1;
}

.header__sub {
    margin: 0;
    font-size: 0.95rem;
}

.header__right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.app__footer {
    margin-top: 40px;
    padding: 20px;
    border-top: 1px solid rgb(var(--border));
    text-align: center;
    font-size: .9rem;
    color: rgb(var(--muted));
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: center;
}

.app__footer .disclaimer {
    font-size: .8rem;
    color: rgb(var(--muted));
}

.footer_cards {
    display: flex;
    gap: 12px;
}

.footer_cards .card {
    width: 50%;
}

h1 {
    font-size: clamp(28px, 5vw, 40px);
    margin: 0 0 6px;
    letter-spacing: .2px;
}

h2.card__title {
    margin: 0 0 14px;
    font-size: 20px;
}

h3 {
    font-size: 14px;
    margin: 18px 0 8px;
}

.muted {
    color: rgb(var(--muted));
}

.muted.xs {
    font-size: 12px;
}

.small {
    font-size: 13px;
    color: rgb(var(--muted));
}

.grid {
    width: min(1100px, 100%);
    margin-inline: auto;
    padding: 0 20px 32px;
    display: grid;
    grid-template-columns: 1fr 340px;
    grid-template-areas: "content aside";
    align-items: start;
    gap: var(--gap);
}

.grid>aside {
    grid-area: aside;
}

.content {
    grid-area: content;
}

/* Cards */
.card {
    background: rgba(var(--card), .9);
    border: 1px solid rgb(var(--border));
    border-radius: var(--radius);
}

.card--input {
    padding: 20px;
}

.card--result {
    position: sticky;
    top: 20px;
    align-self: start;
    padding: 20px;
}

/* Inputs */
.field {
    margin-bottom: 16px;
}

.label {
    display: block;
    font-size: 13px;
    color: rgb(var(--muted));
    margin-bottom: 6px;
}

.input,
.segmented,
.btn,
select {
    border-radius: 10px;
    border: 1px solid rgb(var(--border));
    background: rgba(255, 255, 255, .02);
}

.input,
select {
    width: 100%;
    padding: 10px 12px;
    color: rgb(var(--fg));
    outline: none;
}

.input:focus,
select:focus {
    border-color: rgba(var(--ring), .6);
    box-shadow: 0 0 0 4px rgba(var(--ring), .12);
}

.input[type="number"] {
    -moz-appearance: textfield;
}

.input[type="number"]::-webkit-outer-spin-button,
.input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.inline {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
}

.hint {
    align-self: end;
    color: rgb(var(--muted));
    font-size: 13px;
}

.grid--2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gap);
}

.stack>*+* {
    margin-top: 14px;
}

.divider {
    height: 1px;
    background: rgb(var(--border));
    margin: 20px 0;
}

/* Buttons */
.btn {
    padding: 10px 14px;
    cursor: pointer;
    color: rgb(var(--fg));
    background: rgba(255, 255, 255, .04);
    transition: .2s;
}

.btn:hover {
    background: rgba(255, 255, 255, .08);
    color: #fff;
}

.btn--primary {
    background: rgb(var(--primary));
    color: #0b0b0f;
    border: 0;
    font-weight: 600;
}

.btn--primary:hover {
    filter: brightness(1.05);
}

.btn--ghost {
    background: transparent;
}

.lang-switch {
  display: inline-flex;
  background: transparent;
  border: 1px solid rgb(var(--border));
  border-radius: 999px;
}

.lang-btn {
  border: none;
  background: rgba(255, 255, 255, .04);
  color: rgb(var(--fg));
  font-size: 12px;
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.lang-btn:hover {
  color: #fff;
}

.lang-btn.active {
  background: rgb(var(--primary));
  color: #fff;
}

/* Segmented control */
.segmented {
    display: inline-flex;
    gap: 8px;
    padding: 6px;
    background: rgba(255, 255, 255, .04);
}

.segmented label {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border-radius: 8px;
    cursor: pointer;
}

.segmented input {
    accent-color: rgb(var(--primary));
}

/* Switch */
.switch {
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.switch__label {
    user-select: none;
}

.switch input {
    display: none;
}

.switch__slider {
    width: 46px;
    height: 26px;
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgb(var(--border));
    border-radius: 999px;
    position: relative;
    transition: .2s;
}

.switch__slider::after {
    content: "";
    position: absolute;
    top: 3px;
    left: 3px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #0b0b0f;
    box-shadow: 0 2px 6px rgba(0, 0, 0, .35);
    transition: .2s;
}

.switch input:checked+.switch__slider {
    background: rgb(var(--primary));
    border-color: rgb(var(--primary));
}

.switch input:checked+.switch__slider::after {
    transform: translateX(20px);
    background: #11131a;
}

/* Select: Dark + eigener Pfeil */
select {
    appearance: none;
    background-color: rgba(255, 255, 255, .02);
    color: rgb(var(--fg));
    border: 1px solid rgb(var(--border));
    border-radius: 10px;
    padding: 10px 36px 10px 12px;
    /* Platz für Pfeil rechts */
    line-height: 1.2;
    outline: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg width='12' height='8' viewBox='0 0 12 8' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23AEB0C2' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 12px 8px;
}

select:focus {
    border-color: rgba(var(--ring), .6);
    box-shadow: 0 0 0 4px rgba(var(--ring), .12);
}

/* Dropdown-Popup (Option-Liste) dunkel */
select option,
select optgroup {
    background-color: rgb(var(--card));
    color: rgb(var(--fg));
}

/* Range */
.range {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: var(--range-height);
    padding: 0;
    line-height: normal;
    border-radius: 999px;
    background:
        linear-gradient(var(--range-fill), var(--range-fill)) 0/var(--range-pct, 0%) 100% no-repeat,
        var(--range-track);
    outline: none;
}

.range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    margin-top: calc((var(--thumb-size) - var(--range-height)) / -2);
    width: var(--thumb-size);
    ;
    height: var(--thumb-size);
    ;
    border-radius: 50%;
    background: var(--range-thumb);
    border: 2px solid var(--range-fill);
    box-shadow: 0 0 0 4px var(--range-glow);
    cursor: pointer;
}

.range::-webkit-slider-runnable-track {
    height: var(--range-height);
    border-radius: 999px;
    background: transparent;
}

.range::-moz-range-track {
    height: var(--range-height);
    border-radius: 999px;
    background:
        linear-gradient(var(--range-fill), var(--range-fill)) 0/var(--range-pct, 0%) 100% no-repeat,
        var(--range-track);
}

.range::-moz-range-thumb {
    width: var(--thumb-size);
    ;
    height: var(--thumb-size);
    ;
    border-radius: 50%;
    background: var(--range-thumb);
    border: 2px solid var(--range-fill);
    box-shadow: 0 0 0 4px var(--range-glow);
    cursor: pointer;
}

.range:focus {
    box-shadow: 0 0 0 4px rgba(var(--ring), .12);
}

#fehlteileOut {
    margin-top: 12px;
}

/* Result */
.result .row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 0;
}

.badge {
    padding: 4px 8px;
    border-radius: 999px;
    border: 1px solid rgb(var(--border));
    background: rgba(255, 255, 255, .05);
}

.rangeCard {
    margin: 12px 0 12px 0;
    padding: 12px;
    border: 1px dashed rgb(var(--border));
    border-radius: 12px;
    background: rgba(255, 255, 255, .03);
}

.rangeVal {
    font-size: 18px;
    margin-top: 2px;
}

.list {
    padding-left: 18px;
    line-height: 1.5;
}

/* Utility */
.hidden {
    display: none;
}

/* Textarea */
.textarea {
    width: 100%;
    resize: vertical;
    border: 1px solid rgb(var(--border));
    border-radius: 10px;
    padding: 12px;
    background: rgba(255, 255, 255, .02);
    color: rgb(var(--fg));
    outline: none;
}

.textarea {
    scrollbar-width: thin;
    scrollbar-color: rgb(var(--border)) rgba(255, 255, 255, .04);
}

.textarea::-webkit-scrollbar {
    width: 10px;
}

.textarea::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, .04);
    border-radius: 8px;
}

.textarea::-webkit-scrollbar-thumb {
    background: rgb(var(--border));
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, .04);
}

.textarea::-webkit-scrollbar-thumb:hover {
    background: color-mix(in srgb, rgb(var(--border)) 85%, white 15%);
}

.textarea:focus {
    border-color: rgba(var(--ring), .6);
    box-shadow: 0 0 0 4px rgba(var(--ring), .12);
}

.donate {
    margin-bottom: 20px;
}

.fiverr {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border: 1px solid rgb(var(--border));
    border-radius: 12px;
    background: rgba(255, 255, 255, .04);
    color: rgb(var(--fg));
    text-decoration: none;
    transition: transform .1s ease, background .15s ease, border-color .15s ease;
}

.fiverr:hover {
    background: rgba(255, 255, 255, .06);
    border-color: #00b22d;
    transform: translateY(-1px);
}

.donate-paypal {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border: 1px solid rgb(var(--border));
    border-radius: 12px;
    background: rgba(255, 255, 255, .04);
    color: rgb(var(--fg));
    text-decoration: none;
    transition: transform .1s ease, background .15s ease, border-color .15s ease;
}

.donate-paypal:hover {
    background: rgba(255, 255, 255, .06);
    border-color: #0070BA;
    transform: translateY(-1px);
}

.paypal-logo {
    width: 24px;
    height: 24px;
    display: block;
}

@media (max-width: 980px) {
    .grid {
        grid-template-columns: 1fr;
        grid-template-areas:
            "content"
            "aside";
    }

    .card--result {
        position: static;
        top: auto;
    }

    .footer_cards {
        flex-direction: column;
        justify-content: center;
    }

    .footer_cards .card {
        width: 100%;
    }
}

@media (max-width: 720px) {
    .grid--2 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .header__top {
        column-gap: 10px;
    }

    .logo {
        height: 48px;
    }

    .app__header {
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
    }

    .header__right {
        justify-content: flex-start;
    }
}

@media (max-width: 480px) {

    .card--input,
    .card--result {
        padding: 16px;
    }

    :root {
        --gap: 16px;
    }
}