/* PixelPay – minimales, ruhiges Design.
   Farben als CSS-Variablen, damit wir später leicht umfärben können. */

:root {
    --pp-ink: #14161a;
    --pp-muted: #6b7280;
    --pp-bg: #f5f6f8;
    --pp-surface: #ffffff;
    --pp-border: #e6e8ec;
    --pp-accent: #4f46e5;        /* dezenter Indigo-Akzent */
    --pp-accent-ink: #ffffff;
    --pp-radius: 16px;
    --pp-shadow: 0 20px 50px -20px rgba(20, 22, 26, 0.25);
    --pp-font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--pp-font);
    color: var(--pp-ink);
    background:
        radial-gradient(1200px 600px at 50% -10%, #ffffff, transparent),
        var(--pp-bg);
    display: grid;
    place-items: center;
    padding: 24px;
}

.pp-shell { width: 100%; max-width: 440px; }

.pp-card {
    background: var(--pp-surface);
    border: 1px solid var(--pp-border);
    border-radius: var(--pp-radius);
    box-shadow: var(--pp-shadow);
    padding: 36px 32px 28px;
}

.pp-brand {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--pp-accent);
    margin-bottom: 14px;
}

.pp-card__title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 8px;
    line-height: 1.2;
}

.pp-card__lead {
    color: var(--pp-muted);
    font-size: 0.95rem;
    margin: 0 0 26px;
}

/* Presets */
.pp-presets {
    border: 0;
    padding: 0;
    margin: 0 0 18px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.pp-preset {
    position: relative;
    display: block;
    cursor: pointer;
}

.pp-preset input {
    position: absolute;
    opacity: 0;
    inset: 0;
    cursor: pointer;
}

.pp-preset span {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 14px;
    border: 1.5px solid var(--pp-border);
    border-radius: 12px;
    font-weight: 600;
    transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.pp-preset--custom { grid-column: 1 / -1; }

.pp-preset input:checked + span {
    border-color: var(--pp-accent);
    background: color-mix(in srgb, var(--pp-accent) 8%, white);
    color: var(--pp-accent);
}

.pp-preset input:focus-visible + span {
    outline: 2px solid var(--pp-accent);
    outline-offset: 2px;
}

/* Eigener Betrag */
.pp-custom { margin-bottom: 18px; }
.pp-custom .form-label { font-size: 0.85rem; color: var(--pp-muted); }

/* Button */
.pp-btn {
    width: 100%;
    background: var(--pp-ink);
    color: #fff;
    border: 0;
    border-radius: 12px;
    font-weight: 600;
    padding: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: transform 0.05s, opacity 0.15s;
}

.pp-btn:hover { color: #fff; opacity: 0.92; }
.pp-btn:active { transform: translateY(1px); }
.pp-btn:disabled { opacity: 0.6; }

.pp-error { margin: 14px 0 0; font-size: 0.9rem; }

/* Footer */
.pp-card__foot {
    margin-top: 24px;
    padding-top: 18px;
    border-top: 1px solid var(--pp-border);
    text-align: center;
}

.pp-pay { font-size: 0.9rem; color: var(--pp-ink); }
.pp-pay span { color: var(--pp-muted); }
.pp-secured { font-size: 0.78rem; color: var(--pp-muted); margin-top: 6px; }

/* Erfolg / Abbruch */
.pp-state { text-align: center; }
.pp-state__icon { font-size: 2.5rem; margin-bottom: 8px; }
.pp-link { color: var(--pp-accent); font-weight: 600; text-decoration: none; }
.pp-link:hover { text-decoration: underline; }