/* ================================================================
   AFS-Software QR-Code-Generator – Stylesheet
   Aufbau:
   1. Basis & Reset
   2. Layout (Container, Header, Footer)
   3. Komponenten (Formular, Buttons, QR-Anzeige, gespeicherte Liste)
   4. Fullscreen-Ansicht
   5. Responsive Anpassungen
   6. Print-Styles
   ================================================================ */

/* ---------- 1. Basis & Reset ---------- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

:root {
    /* Farbpalette im AFS-Stil: seriöse Blautöne, klare Akzente */
    --color-primary: #003c7e;          /* AFS-Blau */
    --color-primary-dark: #002a5c;
    --color-primary-light: #1d5ca8;
    --color-accent: #e30613;           /* roter Akzent */
    --color-text: #1a1a1a;
    --color-text-muted: #5a6473;
    --color-bg: #f5f7fa;
    --color-card: #ffffff;
    --color-border: #d9dee5;
    --color-success: #2e7d32;
    --color-danger: #c62828;

    --radius: 8px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);

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

html, body {
    margin: 0;
    padding: 0;
}

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

h1, h2, h3 {
    color: var(--color-primary);
    margin-top: 0;
    line-height: 1.2;
}

h1 { font-size: 2rem; margin-bottom: 0.5rem; }
h2 { font-size: 1.4rem; margin-bottom: 1rem; }

a {
    color: var(--color-primary);
    text-decoration: none;
}
a:hover, a:focus { text-decoration: underline; }

/* ---------- 2. Layout ---------- */
.container {
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* Header */
.site-header {
    background-color: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 10;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.logo-link {
    text-decoration: none;
    display: inline-block;
}

.logo-img {
    display: block;
    height: 44px;
    width: auto;
    max-width: 220px;
}

@media (max-width: 600px) {
    .logo-img {
        height: 36px;
    }
}

.header-nav {
    display: flex;
    gap: 1.25rem;
    font-weight: 500;
}

.header-nav a {
    color: var(--color-text);
}

/* Main-Bereich */
.main-content {
    flex: 1;
    padding: 2rem 1.25rem 3rem;
}

.intro {
    margin-bottom: 2rem;
    text-align: center;
}

.lead {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 640px;
    margin: 0 auto;
}

/* Footer */
.site-footer {
    background-color: var(--color-primary-dark);
    color: #ffffff;
    padding: 1.5rem 0;
    margin-top: auto;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-copy {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.9;
}

.footer-nav {
    display: flex;
    gap: 1.5rem;
}

.footer-nav a {
    color: #ffffff;
    font-size: 0.9rem;
    opacity: 0.9;
}

.footer-nav a:hover {
    opacity: 1;
}

/* ---------- 3. Komponenten ---------- */

/* Card-Stil für die Sektionen */
.generator-card,
.qr-result,
.saved-section,
.params-section {
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}

/* Formular */
.qr-form .form-group {
    margin-bottom: 1rem;
}

.qr-form label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.35rem;
    color: var(--color-text);
}

.qr-form input[type="text"],
.qr-form textarea {
    width: 100%;
    padding: 0.65rem 0.8rem;
    font: inherit;
    color: var(--color-text);
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    transition: border-color 0.15s, box-shadow 0.15s;
    resize: vertical;
}

.qr-form input[type="text"]:focus,
.qr-form textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 60, 126, 0.15);
}

.form-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.2rem;
    font: inherit;
    font-weight: 600;
    color: var(--color-text);
    background-color: #fff;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.15s, border-color 0.15s, color 0.15s,
                box-shadow 0.15s, transform 0.05s;
    text-decoration: none;
}

.btn:hover {
    background-color: #f0f3f7;
    border-color: #c2c9d4;
}

.btn:active {
    transform: translateY(1px);
}

.btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 60, 126, 0.25);
}

.btn-primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--color-primary-light);
    border-color: var(--color-primary-light);
    color: #ffffff;
}

.btn-secondary {
    background-color: #fff;
    border-color: var(--color-border);
}

.btn-danger {
    color: var(--color-danger);
    border-color: #e3b3b3;
    background-color: #fff;
}
.btn-danger:hover {
    background-color: #fbeaea;
    border-color: #d99a9a;
}

/* QR-Code-Ergebnis */
.qr-result-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.qr-canvas {
    /* Vom QR-Code-Lib gerendertes Canvas; max-width sorgt für Responsiveness */
    max-width: 100%;
    width: 280px;
    height: auto;
    background: #ffffff;
    padding: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}

.qr-caption {
    margin: 1rem 0 0;
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--color-text);
    word-break: break-word;
}

.qr-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 1.25rem;
    justify-content: center;
}

/* Gespeicherte Liste */
.saved-info {
    color: var(--color-text-muted);
    margin: 0 0 1rem;
}

.saved-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
}

.saved-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: #fbfcfd;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1rem;
    text-align: center;
}

.saved-item canvas {
    width: 140px;
    height: 140px;
    background: #fff;
    padding: 0.4rem;
    border-radius: 4px;
}

.saved-item-label {
    margin: 0.75rem 0 0.25rem;
    font-weight: 600;
    word-break: break-word;
    font-size: 0.95rem;
}

.saved-item-value {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    word-break: break-word;
    margin: 0 0 0.75rem;
    /* Lange Werte abschneiden */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.saved-item-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.35rem;
    margin-top: auto;
}

.saved-item-actions .btn {
    padding: 0.4rem 0.7rem;
    font-size: 0.85rem;
}

/* URL-Parameter-Erklärung */
.params-section h3 {
    font-size: 1.1rem;
    margin: 1.25rem 0 0.5rem;
    color: var(--color-text);
}

.params-section code {
    background: #eef2f7;
    color: var(--color-primary-dark);
    padding: 0.1em 0.4em;
    border-radius: 4px;
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    font-size: 0.92em;
    word-break: break-all;
}

.params-list {
    margin: 1rem 0 0;
    padding: 0;
}

.params-list dt {
    margin-top: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.params-list dt:first-child {
    margin-top: 0;
}

.params-list dd {
    margin: 0.25rem 0 0;
    padding-left: 0;
    color: var(--color-text-muted);
}

.param-required,
.param-optional {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.15em 0.55em;
    border-radius: 999px;
    line-height: 1.4;
}

.param-required {
    background: #fde7e7;
    color: var(--color-danger);
}

.param-optional {
    background: #e8f0fa;
    color: var(--color-primary);
}

.params-hint {
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    background: #fffbe6;
    border-left: 4px solid #e0b800;
    border-radius: 6px;
    font-size: 0.92rem;
}

.params-examples {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.params-examples li {
    background: #fbfcfd;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 0.6rem 0.8rem;
    line-height: 1.5;
}

.params-examples a {
    text-decoration: none;
}

.params-examples a:hover code,
.params-examples a:focus code {
    background: #dde6f2;
}

.example-desc {
    display: block;
    color: var(--color-text-muted);
    font-size: 0.88rem;
    margin-top: 0.2rem;
}

/* Datenschutz-Hinweis */
.privacy-notice {
    background: #eef4fb;
    border-left: 4px solid var(--color-primary);
    color: var(--color-text);
    padding: 1rem 1.25rem;
    border-radius: 6px;
    margin-top: 1.5rem;
    font-size: 0.95rem;
}

/* Klickbare QR-Vorschau in der gespeicherten Liste */
.saved-item canvas {
    cursor: zoom-in;
    transition: transform 0.15s, box-shadow 0.15s;
}

.saved-item canvas:hover,
.saved-item canvas:focus {
    transform: scale(1.03);
    box-shadow: 0 0 0 3px rgba(0, 60, 126, 0.2);
    outline: none;
}

/* ---------- Modal / Popup ---------- */
.modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal[hidden] {
    display: none !important;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 25, 40, 0.55);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}

.modal-dialog {
    position: relative;
    background: #ffffff;
    border-radius: var(--radius);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 1.75rem 1.75rem 1.5rem;
    max-width: min(560px, 95vw);
    width: 100%;
    max-height: 92vh;
    overflow-y: auto;
    text-align: center;
    animation: modal-pop 0.18s ease-out;
}

@keyframes modal-pop {
    from { opacity: 0; transform: scale(0.94); }
    to   { opacity: 1; transform: scale(1); }
}

.modal-close {
    position: absolute;
    top: 0.5rem;
    right: 0.6rem;
    background: transparent;
    border: none;
    font-size: 1.8rem;
    line-height: 1;
    color: var(--color-text-muted);
    cursor: pointer;
    width: 2.2rem;
    height: 2.2rem;
    border-radius: 50%;
    transition: background-color 0.15s, color 0.15s;
}

.modal-close:hover,
.modal-close:focus {
    background: #f0f3f7;
    color: var(--color-text);
    outline: none;
}

.modal-title {
    margin: 0 0 1rem;
    font-size: 1.2rem;
    padding-right: 2rem; /* Platz für den Schließen-Button */
    word-break: break-word;
}

.modal-canvas {
    max-width: 100%;
    width: min(360px, 70vw);
    height: auto;
    background: #ffffff;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}

.modal-value {
    margin: 1rem 0 0;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    word-break: break-word;
    /* Lange Werte sauber begrenzen */
    max-height: 6rem;
    overflow-y: auto;
}

.modal-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.6rem;
    margin-top: 1.25rem;
}

@media (max-width: 480px) {
    .modal-dialog {
        padding: 1.25rem 1rem 1rem;
    }
    .modal-actions {
        flex-direction: column;
    }
    .modal-actions .btn {
        width: 100%;
    }
}

/* Beim Drucken aus dem Modal heraus nur das Modal-Canvas sichtbar lassen */
@media print {
    body.is-modal-print .site-header,
    body.is-modal-print .main-content,
    body.is-modal-print .site-footer {
        display: none !important;
    }
    body.is-modal-print .modal {
        position: static !important;
        padding: 0 !important;
    }
    body.is-modal-print .modal-backdrop,
    body.is-modal-print .modal-close,
    body.is-modal-print .modal-actions,
    body.is-modal-print .modal-title,
    body.is-modal-print .modal-value {
        display: none !important;
    }
    body.is-modal-print .modal-dialog {
        box-shadow: none !important;
        padding: 0 !important;
        max-width: none !important;
    }
    body.is-modal-print .modal-canvas {
        border: none !important;
        padding: 0 !important;
        width: 90mm !important;
    }
}

/* ---------- 4. Fullscreen-Ansicht ---------- */
.fullscreen-view {
    position: fixed;
    inset: 0;
    background: #ffffff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    z-index: 100;
}

/* Das HTML-Attribut [hidden] entspricht display: none, wird aber von jeder
   expliziten display-Regel überschrieben. Daher explizit erzwingen, damit
   die Vollbild-Ansicht nur bei ?fullscreen=1 sichtbar ist. */
.fullscreen-view[hidden] {
    display: none !important;
}

.fullscreen-canvas {
    /* QR-Code soll möglichst groß, aber nicht über den Viewport hinaus */
    width: min(80vw, 80vh);
    height: auto;
    background: #fff;
    padding: 1rem;
}

.fullscreen-label {
    margin-top: 1.5rem;
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--color-text);
    text-align: center;
    word-break: break-word;
}

/* Wenn Fullscreen aktiv, normalen Inhalt ausblenden */
body.is-fullscreen .site-header,
body.is-fullscreen .main-content,
body.is-fullscreen .site-footer {
    display: none;
}

/* ---------- 5. Responsive ---------- */
@media (max-width: 600px) {
    h1 { font-size: 1.6rem; }
    h2 { font-size: 1.25rem; }

    .header-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .header-nav {
        gap: 1rem;
        font-size: 0.95rem;
    }

    .main-content {
        padding: 1.25rem 1rem 2rem;
    }

    .generator-card,
    .qr-result,
    .saved-section {
        padding: 1.1rem;
    }

    .form-actions {
        flex-direction: column;
    }
    .form-actions .btn {
        width: 100%;
    }

    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* ---------- 6. Print-Styles ---------- */
@media print {
    /* Alle UI-Elemente ausblenden, die nicht zum QR-Code gehören */
    .no-print,
    .site-header,
    .site-footer,
    .intro,
    .generator-card,
    .saved-section,
    .privacy-notice,
    .qr-actions,
    .header-nav,
    .footer-nav {
        display: none !important;
    }

    body {
        background: #ffffff !important;
        color: #000 !important;
    }

    /* QR-Code zentriert auf der Druckseite */
    .main-content {
        padding: 0 !important;
        margin: 0 !important;
    }

    .qr-result,
    .qr-result-inner {
        background: #ffffff !important;
        border: none !important;
        box-shadow: none !important;
        padding: 0 !important;
        margin: 0 !important;
        page-break-inside: avoid;
    }

    .qr-canvas,
    .fullscreen-canvas {
        border: none !important;
        padding: 0 !important;
        max-width: 90mm;
        width: 90mm !important;
        height: auto !important;
    }

    .qr-caption,
    .fullscreen-label {
        margin-top: 8mm;
        font-size: 14pt;
        color: #000 !important;
    }

    /* Sowohl normale Ansicht als auch Fullscreen drucken den QR-Code */
    .fullscreen-view {
        position: static !important;
        padding: 0 !important;
    }

    @page {
        margin: 15mm;
    }
}