/* ─── Reset & Base ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --clr-primary:   #5b8dd9;
    --clr-primary-d: #3d6db8;
    --clr-sonne:     #f4a01c;
    --clr-stern:     #8b5cf6;
    --clr-mond:      #3b82f6;
    --clr-success:   #16a34a;
    --clr-error:     #dc2626;
    --clr-bg:        #f0f4ff;
    --clr-card:      #ffffff;
    --clr-text:      #1e293b;
    --clr-muted:     #64748b;
    --clr-border:    #cbd5e1;
    --radius:        14px;
    --radius-sm:     8px;
    --shadow:        0 4px 24px rgba(0,0,0,.10);
    --shadow-sm:     0 2px 8px  rgba(0,0,0,.06);
    --font:          'Segoe UI', system-ui, -apple-system, sans-serif;
}

html { font-size: 16px; }

body {
    font-family: var(--font);
    background: var(--clr-bg);
    color: var(--clr-text);
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

/* ─── Header ───────────────────────────────────────────── */
.site-header {
    background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-d));
    color: #fff;
    padding: 1rem 1rem 1.5rem;
    text-align: center;
}

.header-inner { max-width: 480px; margin: 0 auto; }

.header-icon { font-size: 2.5rem; margin-bottom: .5rem; }

.site-header h1 {
    font-size: clamp(1.4rem, 5vw, 1.9rem);
    font-weight: 700;
    letter-spacing: -.02em;
}

.header-sub {
    margin-top: .25rem;
    font-size: .95rem;
    opacity: .82;
}

/* ─── Layout ───────────────────────────────────────────── */
.container {
    flex: 1;
    width: 100%;
    max-width: 520px;
    margin: 0 auto;
    padding: 1.5rem 1rem 2rem;
}

/* ─── Card ─────────────────────────────────────────────── */
.card {
    background: var(--clr-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.75rem 1.5rem;
}

.card__icon {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: .75rem;
}

.card h2 {
    font-size: 1.25rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: .5rem;
}

.card__intro {
    color: var(--clr-muted);
    font-size: .9rem;
    text-align: center;
    margin-bottom: 1.5rem;
}

.card__note {
    margin-top: 1.25rem;
    font-size: .82rem;
    color: var(--clr-muted);
    text-align: center;
    line-height: 1.5;
}

.card--success { border-top: 4px solid var(--clr-success); }

/* ─── Success Summary ──────────────────────────────────── */
.summary {
    display: flex;
    flex-direction: column;
    gap: .5rem;
    margin-top: 1rem;
}

.summary__row {
    display: flex;
    align-items: baseline;
    gap: .75rem;
    padding: .6rem .75rem;
    background: var(--clr-bg);
    border-radius: var(--radius-sm);
}

.summary__row dt {
    flex-shrink: 0;
    width: 130px;
    font-size: .8rem;
    font-weight: 600;
    color: var(--clr-muted);
    text-transform: uppercase;
    letter-spacing: .04em;
}

.summary__row dd { font-size: .95rem; font-weight: 500; }

/* ─── Badges ───────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    padding: .2em .7em;
    border-radius: 99px;
    font-size: .85rem;
    font-weight: 600;
    color: #fff;
}
.badge--sonne { background: var(--clr-sonne); }
.badge--stern { background: var(--clr-stern); }
.badge--mond  { background: var(--clr-mond);  }

/* ─── Alert ────────────────────────────────────────────── */
.alert {
    border-radius: var(--radius-sm);
    padding: .9rem 1rem;
    margin-bottom: 1rem;
    font-size: .9rem;
}
.alert--error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: var(--clr-error);
}
.alert ul { padding-left: 1.2rem; }
.alert li + li { margin-top: .25rem; }

/* ─── Form ─────────────────────────────────────────────── */
.form { display: flex; flex-direction: column; gap: 1.1rem; }

.form__group { display: flex; flex-direction: column; gap: .4rem; }

.form__row { display: grid; grid-template-columns: 1fr; gap: .5rem; }

@media (min-width: 420px) {
    .form__row { grid-template-columns: 1fr 1fr; }
}

.form__label {
    font-size: .85rem;
    font-weight: 600;
    color: var(--clr-text);
}
.form__label span { color: var(--clr-error); }

.form__input {
    width: 100%;
    padding: .75rem 1rem;
    border: 1.5px solid var(--clr-border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: var(--font);
    color: var(--clr-text);
    background: #fff;
    transition: border-color .15s, box-shadow .15s;
    -webkit-appearance: none;
    appearance: none;
}
.form__input::placeholder { color: #a0aec0; }
.form__input:focus {
    outline: none;
    border-color: var(--clr-primary);
    box-shadow: 0 0 0 3px rgba(91,141,217,.18);
}

/* Select */
.select-wrapper { position: relative; }
.form__select { padding-right: 2.5rem; cursor: pointer; }
.select-wrapper::after {
    content: '▾';
    position: absolute;
    right: .9rem;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--clr-muted);
    font-size: .9rem;
}

/* ─── Toggle Group (Radio) ─────────────────────────────── */
.toggle-group {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: .5rem;
}

.toggle-group--2 {
    grid-template-columns: repeat(2, 1fr);
}

.toggle { display: contents; }

.toggle input[type="radio"] { position: absolute; opacity: 0; width: 0; height: 0; }

.toggle__label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .3rem;
    padding: .75rem .5rem;
    border: 2px solid var(--clr-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: .88rem;
    font-weight: 600;
    text-align: center;
    transition: border-color .15s, background .15s, color .15s;
    background: #fff;
    color: var(--clr-muted);
    user-select: none;
}
.toggle__icon { font-size: 1.5rem; }

.toggle--sonne         input:checked ~ .toggle__label { border-color: var(--clr-sonne); background: #fff8eb; color: #92600a; }
.toggle--stern         input:checked ~ .toggle__label { border-color: var(--clr-stern); background: #f5f3ff; color: #5b21b6; }
.toggle--mond          input:checked ~ .toggle__label { border-color: var(--clr-mond);  background: #eff6ff; color: #1d4ed8; }
.toggle--uebernachtung input:checked ~ .toggle__label { border-color: #16a34a; background: #f0fdf4; color: #15803d; }

.toggle__label:hover { border-color: var(--clr-primary); }

/* ─── Button ───────────────────────────────────────────── */
.btn {
    display: block;
    width: 100%;
    padding: .9rem;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: background .15s, transform .1s;
    margin-top: .5rem;
}
.btn--primary {
    background: var(--clr-primary);
    color: #fff;
}
.btn--primary:hover { background: var(--clr-primary-d); }
.btn--primary:active { transform: scale(.98); }

/* ─── Footer ───────────────────────────────────────────── */
.site-footer {
    text-align: center;
    padding: 1.25rem;
    font-size: .8rem;
    color: var(--clr-muted);
}

/* ─── Desktop tweaks ───────────────────────────────────── */
@media (min-width: 540px) {
    .site-header { padding: 1rem 1rem 1.5rem; }
    .card { padding: 2.25rem 2rem; }
    .container { padding: 2rem 1.5rem 3rem; }
}