:root {
    /* Standaard/fallback schema (groen) — geldt ook als JS uitstaat */
    --white: hsl(0, 0%, 100%);
    --page-bg: #2fae76;
    --accent: #3ddc97;
    --btn: #4be0a1;

    --text-light: #888;
    --text-dark: #1a1a1a;
    --line-color: #1a1a1a;
    --error-color: #e0453c;
    --succes: #1c8a5c;

    --card-radius: clamp(14px, 4vw, 30px);
    --card-padding-hor: clamp(15px, 10vw, 100px);
    --card-padding-ver: clamp(30px, 10vw, 80px);
    --card-shadow: 20px 20px 0 rgba(0, 0, 0, 0.15);
    --card-square-size: 64px;

    --logo-size: clamp(64px, 15vw, 100px);
}

html[data-theme="groen"] {
    --page-bg: #2fae76;
    --accent: #3ddc97;
    --btn: #4be0a1;
}

html[data-theme="oceaan"] {
    --page-bg: #1f6f9c;
    --accent: #5fd4e8;
    --btn: #5fc2e0;
}

html[data-theme="zonsondergang"] {
    --page-bg: #d9642f;
    --accent: #ffb066;
    --btn: #ffb35f;
}

html[data-theme="violet"] {
    --page-bg: #6c4fa1;
    --accent: #c9a8ff;
    --btn: #b98cff;
}

html[data-theme="framboos"] {
    --page-bg: #c9375d;
    --accent: #ff9db4;
    --btn: #ff7d9c;
}

* {
    box-sizing: border-box;
}

/* Verbergt content visueel maar houdt het beschikbaar voor screenreaders — gebruikt voor het verborgen <h2> in het formulier. */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

html {
    overflow-x: hidden;
}

body {
    margin: 0;
    min-height: 100vh;
    min-height: 100dvh;
    padding: clamp(16px, 5vw, 40px) 16px;
    overflow-x: hidden;
    display: flex;
    flex-direction: column-reverse;
    align-items: center;
    justify-content: center;
    font-family: "Inter", sans-serif;
    font-weight: 400;
    font-size: 14px;
    background: var(--page-bg);
    transition: background-color 0.2s ease;
}

header {
    width: 100%;
    max-width: 600px;
    padding: 0 var(--card-padding-hor);
    padding-top: 32px;
    text-align: center;
}

h1 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: color-mix(in srgb, var(--page-bg) 85%, black 15%);
}

.card-wrapper {
    position: relative;
    width: 100%;
    min-width: 250px;
    max-width: 600px;
    padding-top: calc(var(--logo-size) / 2);
}

.card {
    position: relative;
    width: 100%;
    border-radius: var(--card-radius);
    padding: calc(var(--card-padding-ver) + 30px) var(--card-padding-hor) calc(var(--card-padding-ver) - 30px) var(--card-padding-hor);
    background: var(--white);
    box-shadow: var(--card-shadow);
    z-index: 1;
}

.logo-shadow {
    width: var(--logo-size);
    height: var(--logo-size);
    border-radius: var(--card-radius);
    background: transparent;
    box-shadow: var(--card-shadow);
    z-index: 0;
    pointer-events: none;
}

.logo-container {
    border-radius: var(--card-radius);
    background: var(--text-dark);
    line-height: 0;
    container-type: size;
    container-name: box;
    width: var(--logo-size);
    height: var(--logo-size);
    overflow: hidden;
    z-index: 2;
}

.logo-shadow,
.logo-container {
    position: absolute;
    top: calc(var(--logo-size) / 2);
    left: 50%;
    transform: translate(-50%, -50%);
}

.logo-padding {
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    padding: 20cqh 20cqw;
}

.logo {
    display: block;
    width: 100%;
    height: auto;
}

.logo-white {
    fill: var(--white);
}

.logo-color {
    fill: var(--page-bg);
}


/* Form */
.signup-form {
    display: flex;
    flex-direction: column;
    gap: clamp(20px, 4vw, 26px);
}

/* Zelfde reden als bij .success-panel[hidden] hierboven: voorkomt
   dat "display: flex" het hidden-attribuut overschrijft zodra
   mail.js het formulier na een geslaagde verzending verbergt. */
.signup-form[hidden] {
    display: none;
}

.form-row {
    display: flex;
    gap: 24px;
}

.field {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 0;
}

.field-half {
    flex: 1 1 50%;
}

.field label {
    margin-bottom: 10px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-dark);
    transition: color 0.15s ease;
}

.field.required label::after {
    content: ' *';
    color: currentColor;
}

.field input,
.field textarea {
    width: 100%;
    min-width: 0;
    padding: 6px 2px 10px;
    outline: none;
    border: none;
    border-bottom: 2px solid var(--line-color);
    font-family: "IBM Plex Mono", monospace;
    font-size: 1rem;
    color: var(--text-light);
    background: transparent;
    transition: border-color 0.15s ease;
}

.field textarea {
    resize: none;
    min-height: 90px;
    line-height: 1.5;
}

.field input:focus,
.field textarea:focus {
    border-bottom-color: var(--accent);
}

.field:has(input:focus) label,
.field:has(textarea:focus) label {
    color: var(--accent);
}

.field.invalid input,
.field.invalid textarea {
    border-bottom-color: var(--error-color);
}

.field.invalid label {
    color: var(--error-color);
}

.field.invalid:has(input:focus) label,
.field.invalid:has(textarea:focus) label {
    color: var(--error-color);
}

.error-message,
.form-message {
    margin: 0;
    min-height: 16px;
    font-size: 0.8rem;
    color: var(--error-color);
    word-break: break-word;
}

.error-message:empty,
.form-message:empty {
    display: none;
    margin-top: 0;
}

.error-message {
    margin-top: 6px;
}

.turnstile-wrapper {
    display: flex;
    justify-content: center;
    width: 100%;
    margin-top: 4px;
    overflow: hidden;
}

.turnstile-wrapper .cf-turnstile {
    width: 100%;
    max-width: 300px;
}

.submit-btn {
    width: 100%;
    max-width: 260px;
    min-height: 48px;
    margin-top: 8px;
    padding: 14px 32px;
    border: none;
    border-radius: 30px;
    color: #ffffff;
    font-family: inherit;
    font-size: 1rem;
    line-height: inherit;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    align-self: center;
    cursor: pointer;
    background: var(--btn);
    transition: transform 0.1s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.submit-btn:hover {
    background: var(--page-bg);
    transform: translateX(1px) translateY(1px);
}

.submit-btn:active {
    transform: translateY(0);
}

.submit-btn:focus-visible {
    outline: 3px solid var(--white);
    outline-offset: 2px;
}

.form-message {
    text-align: center;
}

.form-message.success {
    color: var(--succes);
}

.form-message.error {
    color: var(--error-color);
}

.success-panel {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 12px 0 4px;
    text-align: center;
}

.success-panel[hidden] {
    display: none;
}

.success-panel__icon {
    width: 56px;
    height: 56px;
}

.success-panel__icon circle {
    stroke: var(--accent);
    stroke-width: 2;
}

.success-panel__icon path {
    stroke: var(--accent);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-linejoin: round;
    /* tekent het vinkje in met een korte animatie */
    stroke-dasharray: 40;
    stroke-dashoffset: 40;
    animation: draw-check 0.4s 0.15s ease-out forwards;
}

@keyframes draw-check {
    to {
        stroke-dashoffset: 0;
    }
}

.success-panel__text {
    margin: 0;
    font-size: 1rem;
    color: var(--text-dark);
}

.success-panel__reset {
    background: transparent;
    border: 2px solid var(--text-dark);
    color: var(--text-dark);
}

.success-panel__reset:hover {
    background: var(--text-dark);
    color: var(--white);
}


/* RESPONSIVE */

/* Tablet en kleiner: First/Last name onder elkaar */
@media (max-width: 560px) {
    .card {
        padding-bottom: var(--card-padding-ver);
    }

    .form-row {
        flex-direction: column;
        gap: clamp(20px, 4vw, 26px);
    }

    .field-half {
        flex: 1 1 auto;
    }

    .field label,
    .error-message,
    .form-message,
    .submit-btn {
        font-size: 0.8rem;
        letter-spacing: 0.6px;
    }

    .field input,
    .field textarea {
        font-size: 1rem;
    }

    .submit-btn {
        min-height: 30px;
        padding: 12px 32px;
    }

    h1 {
        margin: 0;
        font-size: 0.9rem;
    }
}

/* Smartphone: knop over volledige breedte, iets compactere kaart */
@media (max-width: 480px) {
    body {
        align-items: flex-start;
    }

    .card,
    .logo-shadow {
        box-shadow: 8px 10px 0 rgba(0, 0, 0, 0.12);
    }

    .submit-btn {
        max-width: 100%;
    }

    header {
        padding-top: 15px;
    }
}

/* Zeer kleine schermen */
@media (max-width: 360px) {
    .form-title {
        font-size: 20px;
    }

    .field label,
    .error-message,
    .form-message,
    .submit-btn {
        font-size: 0.7rem;
        letter-spacing: 0.6px;
    }

    .field input,
    .field textarea {
        font-size: 0.9rem;
    }

    .submit-btn {
        min-height: 26px;
        padding: 10px 32px;
    }

    h1 {
        margin: 0;
        font-size: 0.8rem;
    }
}

/* Landscape op mobiel: minder verticale padding zodat het formulier past */
@media (max-height: 480px) and (orientation: landscape) {
    body {
        font-size: 10px;
        align-items: flex-start;
    }
}

/* Grotere schermen: iets meer ademruimte */
@media (min-width: 900px) {
    .card {
        max-width: 600px;
    }
}

/* Toegankelijkheid: minder animatie voor wie dat wil */
@media (prefers-reduced-motion: reduce) {

    body,
    .field label,
    .field input,
    .field textarea,
    .submit-btn {
        transition: none;
    }
}