/* ===================================================================
   Studibuch Widerruf — Styles
   Layout & visual language aligned with Ankauf2:
   title outside card, restrained palette, paper background.
   =================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
    --color-primary: #95C11E;
    --color-primary-dark: #4d6610;
    --color-primary-deep: #354809;
    --color-primary-soft: #E6F2CC;

    --color-text: #2a2a26;
    --color-text-muted: #6b6b66;
    --color-text-subtle: #8a8a82;

    --color-border: rgba(53, 72, 9, 0.12);
    --color-border-strong: rgba(53, 72, 9, 0.22);

    --color-bg: #F4F3EE;
    --color-bg-card: #ffffff;

    --color-error: #c0392b;
    --color-error-bg: #fdf1ef;
    --color-error-border: rgba(192, 57, 43, 0.25);

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-pill: 9999px;

    --shadow-card: 0 14px 32px rgba(42, 42, 38, 0.06),
                   0 4px 8px rgba(42, 42, 38, 0.04);

    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.5;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    width: 100%;
    max-width: 680px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-narrow {
    max-width: 560px;
}

/* ============== HEADER ============== */

.site-header {
    background: transparent;
    padding: 20px 0;
}

.header-inner {
    display: flex;
    align-items: center;
}

.site-logo {
    display: inline-flex;
    text-decoration: none;
}

.site-logo img {
    display: block;
    height: 32px;
    width: auto;
}

@media (max-width: 540px) {
    .site-header { padding: 16px 0; }
    .site-logo img { height: 28px; }
}

/* ============== MAIN / INTRO ============== */

main {
    flex: 1;
    padding: 16px 0 56px;
}

.page-intro {
    margin: 0 0 28px;
    padding: 4px 4px 0;
}

h1 {
    margin: 0 0 14px;
    font-size: clamp(28px, 4vw, 36px);
    line-height: 1.15;
    color: var(--color-primary-deep);
    font-weight: 500;
    letter-spacing: -0.015em;
}

.lead {
    margin: 0;
    color: var(--color-text-muted);
    font-size: 15.5px;
    line-height: 1.6;
    max-width: 56ch;
}

/* ============== CARD ============== */

.form-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 40px;
}

@media (max-width: 540px) {
    .form-card {
        padding: 26px 22px;
        border-radius: var(--radius-md);
    }
}

/* ============== FORM ============== */

.form-field {
    margin-bottom: 18px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 540px) {
    .form-row { grid-template-columns: 1fr; gap: 0; }
}

label {
    display: block;
    margin-bottom: 7px;
    font-weight: 500;
    font-size: 13px;
    color: var(--color-primary-deep);
    letter-spacing: 0.01em;
}

.required {
    color: var(--color-error);
    font-weight: 500;
    margin-left: 3px;
}

.optional {
    color: var(--color-text-subtle);
    font-weight: 400;
    font-size: 12.5px;
    margin-left: 4px;
}

input[type="text"],
input[type="email"],
textarea {
    width: 100%;
    padding: 13px 14px;
    font-family: inherit;
    font-size: 15px;
    color: var(--color-text);
    background: var(--color-bg-card);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: border-color 0.18s ease, box-shadow 0.18s ease;
    appearance: none;
}

input[type="text"]:hover,
input[type="email"]:hover,
textarea:hover {
    border-color: var(--color-border-strong);
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(149, 193, 30, 0.18);
}

textarea {
    resize: vertical;
    min-height: 88px;
    line-height: 1.5;
}

.form-hint {
    display: block;
    margin-top: 6px;
    font-size: 12.5px;
    color: var(--color-text-subtle);
    line-height: 1.45;
}

input[aria-invalid="true"],
textarea[aria-invalid="true"] {
    border-color: var(--color-error);
    background: var(--color-error-bg);
}

/* ============== CAPTCHA ============== */

.form-captcha {
    margin: 24px 0 8px;
    display: flex;
    justify-content: flex-start;
}

/* ============== BUTTONS ============== */

.form-actions {
    margin-top: 28px;
}

.btn-primary {
    display: block;
    width: 100%;
    padding: 15px 28px;
    font-family: inherit;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.01em;
    color: #fff;
    background: var(--color-primary-deep);
    border: 1.5px solid var(--color-primary-deep);
    border-radius: var(--radius-pill);
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.12s ease;
}

.btn-primary:hover,
.btn-primary:focus {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    outline: none;
    transform: translateY(-1px);
}

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

.btn-primary:disabled {
    background: var(--color-text-subtle);
    border-color: var(--color-text-subtle);
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 12px 26px;
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-primary-deep);
    background: transparent;
    border: 1.5px solid var(--color-border-strong);
    border-radius: var(--radius-pill);
    text-decoration: none;
    transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.btn-secondary:hover,
.btn-secondary:focus {
    border-color: var(--color-primary-deep);
    background: var(--color-primary-soft);
    outline: none;
}

.form-disclaimer {
    margin: 18px 0 0;
    font-size: 12.5px;
    color: var(--color-text-subtle);
    text-align: center;
    line-height: 1.55;
}

/* ============== MESSAGES ============== */

.form-message {
    margin-top: 20px;
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    line-height: 1.5;
}

.form-message-error {
    background: var(--color-error-bg);
    color: var(--color-error);
    border: 1px solid var(--color-error-border);
}

.form-message strong {
    display: block;
    margin-bottom: 4px;
    font-weight: 600;
}

/* ============== CONFIRMATION PAGE ============== */

.confirm-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 48px 40px 40px;
    text-align: center;
}

@media (max-width: 540px) {
    .confirm-card { padding: 36px 24px 28px; }
}

.confirm-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    background: var(--color-primary-soft);
    border-radius: 50%;
}

.confirm-icon::after {
    content: '';
    width: 22px;
    height: 11px;
    border-left: 2.5px solid var(--color-primary-deep);
    border-bottom: 2.5px solid var(--color-primary-deep);
    transform: translateY(-3px) rotate(-45deg);
}

.confirm-card h1 {
    margin: 0 0 14px;
    font-size: clamp(24px, 3.4vw, 30px);
}

.confirm-card .lead {
    margin: 0 auto;
    max-width: 44ch;
}

.reference-box {
    margin: 28px auto 0;
    padding: 14px 20px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 13.5px;
    color: var(--color-text-muted);
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.reference-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--color-text-subtle);
    font-weight: 600;
}

.reference-box strong {
    color: var(--color-primary-deep);
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    font-weight: 600;
    font-size: 15px;
    letter-spacing: 0.02em;
}

.confirm-followup {
    margin: 28px auto 0;
    font-size: 13.5px;
    color: var(--color-text-muted);
    line-height: 1.6;
    max-width: 44ch;
}

.confirm-followup a {
    color: var(--color-primary-dark);
    text-decoration: none;
    border-bottom: 1px solid var(--color-border-strong);
}

.confirm-followup a:hover {
    color: var(--color-primary-deep);
}

.confirm-actions {
    margin-top: 32px;
}

/* ============== FOOTER ============== */

.site-footer {
    padding: 24px 0 28px;
    text-align: center;
    font-size: 12.5px;
    color: var(--color-text-subtle);
}

.site-footer p {
    margin: 0;
}

.site-footer a {
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color 0.15s ease;
}

.site-footer a:hover {
    color: var(--color-primary-deep);
}

.footer-sep {
    margin: 0 8px;
    color: var(--color-border-strong);
}