/* ===== Reset ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ===== Theme tokens ===== */
:root {
    --bg-dark: hsl(0 0% 0%);
    --bg: hsl(0 0% 5%);
    --bg-light: hsl(0 0% 10%);
    --text: hsl(0 0% 95%);
    --text-muted: hsl(0 0% 70%);
    --border: hsl(0 0% 30%);
    --highlight: hsl(0 0% 60%);
    --gradient: linear-gradient(0deg, var(--bg) 95%, var(--bg-light));
    --gradient-hover: linear-gradient(0deg, var(--bg), var(--bg-light));
    --border-card: 1px solid var(--border);
    --shadow: 0 2px 2px hsla(0, 0%, 0%, 0.07), 0 4px 4px hsla(0, 0%, 0%, 0.15);

    --muted: #bbb;
    --card: #111;
    --radius: 12px;
    --transparent: rgba(27, 27, 27, 0.6);
}

body.light {
    --bg-dark: hsl(0 0% 90%);
    --bg: hsl(0 0% 95%);
    --bg-light: hsl(0 0% 100%);
    --text: hsl(0 0% 5%);
    --text-muted: hsl(0 0% 30%);
    --border: hsl(0 0% 70%);
    --border-card: 1px solid var(--bg);
    --gradient: linear-gradient(0deg, var(--bg) 95%, var(--bg-light));
    --gradient-hover: linear-gradient(0deg, var(--bg), var(--bg-light));
    --highlight: hsl(0 0% 100%);
}

/* ===== Base ===== */
html, body {
    height: 100%;
}

body {
    font-family: Arial, sans-serif;
    background: var(--bg-dark);
    color: var(--text);
    line-height: 1.5;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

body p {
    font-weight: bold;
    color: var(--text-muted);
}

/* ===== Header ===== */
header {
    position: relative;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    background: var(--gradient);
    border-bottom: 1px solid var(--border);
    padding: 1rem 2rem;
    margin: 0;
    z-index: 10;
}

header nav {
    justify-self: start;
    display: flex;
    gap: 1rem;
}

header nav button:nth-child(3) {
    position: absolute;
    right: 2rem;
}

header img {
    justify-self: center;
    max-height: 8vh;
    min-height: 20px;
    width: auto;
    object-fit: contain;
    align-self: center;
}

header a {
    color: var(--text);
    text-decoration: none;
    background: none;
}

header button {
    color: var(--text);
    background: none;
}

/* ===== Calculator container ===== */
.calculator-container {
    background: var(--gradient);
    border: var(--border-card);
    border-top: 1px solid var(--highlight);
    border-radius: var(--radius);
    padding: 1rem;
    margin: 1rem auto;
    max-width: 40%;
    box-shadow: var(--shadow);
}

/* Titel */
.title-container {
    margin-bottom: 1rem;
}

.title {
    font-size: 1.6rem;
}

.under-title {
    text-align: right;
    font-size: .9rem;
    color: var(--text-muted);
}

/* ===== Materiale valg ===== */
.radio-group {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: .5rem 1rem;
    margin-bottom: 1rem;
}

.radio-group label {
    cursor: pointer;
}

.toggle {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    border: var(--border-card);
    border-top: 1px solid var(--highlight);
    border-radius: 999px;
    background: var(--bg-light);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: background 0.2s ease;
}

.toggle-option {
    text-align: center;
    padding: .5rem;
    cursor: pointer;
    color: var(--text-muted);
    user-select: none;
    transition: color 0.2s ease;
}

/* Tommelfinger på togglen */
.toggle-thumb {
    position: absolute;
    top: .25rem;
    bottom: .25rem;
    left: .25rem;
    width: calc(50% - .5rem);
    border-radius: 999px;
    background: var(--transparent); /* mørk glas-effekt i dark mode */
    border: 1px solid var(--text-muted);
    transition: transform .2s ease, background .2s ease, border .2s ease;
}

/* Når H×B er valgt, flyt thumb til højre */
#mode-hb:checked ~ .toggle .toggle-thumb {
    transform: translateX(100%);
}

/* Aktiv label bliver lysere */
#mode-m2:checked ~ .toggle label[for="mode-m2"],
#mode-hb:checked ~ .toggle label[for="mode-hb"] {
    color: var(--text);
    font-weight: bold;
}

/* === Light mode justeringer === */
body.light .toggle {
    background: var(--bg-light);
}

body.light .toggle-thumb {
    background: rgba(255, 255, 255, 5%);
    border-color: var(--border);
}

body.light .toggle-option {
    color: var(--text-muted);
}

body.light #mode-m2:checked ~ .toggle label[for="mode-m2"],
body.light #mode-hb:checked ~ .toggle label[for="mode-hb"] {
    color: var(--text);
}

.hidden-radio[type="radio"] {
    position: absolute !important;
    opacity: 0 !important;
    pointer-events: none !important;
    width: 0 !important;
    height: 0 !important;
    margin: 0 !important;
    /* ekstra sikkerhed i nogle browsere */
    appearance: none !important;
    -webkit-appearance: none !important;
}

/* ===== Inputområder ===== */
.mode {
    display: none;
    margin-bottom: 1rem;
}

.mode label {
    display: block;
    width: 100%;
    margin-bottom: .5rem;
}

.mode input {
    width: 100%;
    padding: .5rem;
    border: var(--border-card);
    border-radius: var(--radius);
    background: var(--bg-light);
    color: var(--text);
}

#mode-m2:checked ~ .mode-m2 {
    display: block;
}

#mode-hb:checked ~ .mode-hb {
    display: flex;
    gap: .5rem;
}

/* ===== Knap ===== */
@property --angle {
    syntax: "<angle>";
    initial-value: 0deg;
    inherits: true;
}

@keyframes rotate {
    to {
        --angle: 1turn;
    }
}

button {
    text-align: center;
    padding: .6rem 1rem;
    color: var(--text);
    border: 5px solid transparent;
    border-radius: 100vw;
    background: linear-gradient(var(--bg-dark), var(--bg-light)) padding-box,
    conic-gradient(from var(--angle), red, orange, yellow, green, aquamarine, violet, red) border-box;
    cursor: pointer;
    animation: rotate 2s linear infinite;
    animation-play-state: paused;
}

button:hover {
    filter: brightness(1.1);
    animation-play-state: running;
}

/* ===== Resultater ===== */
.results-container {
    display: grid;
    gap: 1rem;
    margin: 1rem auto;
    max-width: 40%;
}

@media (min-width: 768px) {
    .results-container {
        grid-template-columns: 1fr 1fr;
    }
}

.resultbox {
    background: var(--gradient);
    border: var(--border-card);
    border-top: 1px solid var(--highlight);
    border-radius: var(--radius);
    padding: 1rem;
    position: relative;
    box-shadow: var(--shadow);
    min-height: 35vh;
}

.resultbox:hover {
    background: var(--gradient-hover);
}

.resultbox h3 {
    line-height: 1.2;
    margin-bottom: .5rem;
}

.resultbox p {
    white-space: pre-line;
}

.price {
    position: absolute;
    right: 1rem;
    bottom: .5rem;
    font-size: 1.4rem;
    text-align: right;
}

footer {
    display: flex;
    justify-content: center;
    gap: 3rem;
    align-items: center;
    background: var(--gradient);
    border-top: 1px solid var(--border);
    max-height: 8vh;
    width: 100%;
    padding: 0;
    margin: 0;
}

footer img {
    max-height: 7vh;
}

#rightimg{
    transform: scaleX(-1);
}

/* ===== Fejlbesked ===== */
.error {
    color: crimson;
    border: 2px solid crimson;
    padding: 5px;
    border-radius: 12px;
    font-size: 1.1rem;
    max-width: max-content;
    text-align: center;
    margin: 1rem 0 1rem 0;
}

.centerBox {
    display: flex;
    justify-content: center;
}

/* ===== Typografi for inputs/labels/placeholder ===== */
label, button, ::placeholder {
    font-size: clamp(1.1rem, 0.95vw, 4rem);
    font-weight: bold;
}

/* Fjern talfelt-pile i WebKit */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Works in Firefox */
input[type=number] {
    -moz-appearance: textfield;
}

/* Bedre fokus-states */
input:focus, button:focus-visible {
    outline: 2px solid var(--highlight);
    outline-offset: 2px;
    box-shadow: 0 0 0 2px var(--highlight);
}


@media (max-width: 1200px) {
    .results-container,
    .calculator-container {
        max-width: 60%;
    }

    header img {
        max-height: 6vh;
    }
}

/* Tablets */
@media (max-width: 900px) {
    .results-container,
    .calculator-container {
        max-width: 75%;
    }

    header img {
        max-height: 5vh;
    }

    header {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    header a:has(img) {
        order: -1;
    }

    header nav {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 100%;
        position: static;
    }

    header nav button:nth-child(3) {
        position: static;
    }
}

/* Small tablets / large phones */
@media (max-width: 600px) {
    .results-container,
    .calculator-container {
        max-width: 90%;
    }

    header img {
        max-height: 4vh;
    }
}

/* Phones */
@media (max-width: 400px) {
    .results-container,
    .calculator-container {
        max-width: 100%;
    }

    header img {
        max-height: 3vh;
    }
}