/**
 * FWT Whiteboard
 * Datei: tools/whiteboard/assets/whiteboard.css
 * Zweck: Gestaltung des Whiteboards
 *
 * Projekt: FWT / Freie Webtools
 * Stand: 2026-07-27
 *
 * Wichtig:
 * Diese Datei wird beim "Speichern" zusätzlich als eingebettete Kopie in
 * whiteboard.js verwendet (Konstante EMBEDDED_CSS), damit exportierte
 * Dateien vollständig eigenständig funktionieren – auch offline, ganz ohne
 * Zugriff auf diese Datei selbst. Änderungen hier müssen deshalb auch in
 * der Konstante in whiteboard.js nachgezogen werden (Stelle ist dort klar
 * markiert).
 */

/* ============================================================
   01. Sicherheits-/Hinweis-Boxen (gleiches Muster wie bei anderen Tools)
   ============================================================ */

.fwt-security-note {
    display: grid;
    gap: 0.5rem;
    margin-top: 1.5rem;
    padding: 1rem 1.1rem;
    border-radius: 1rem;
    background: #fff8e7;
    border: 1px solid rgba(246, 189, 69, 0.35);
    border-left: 6px solid #d94343;
}

.fwt-security-note strong {
    color: var(--webtools-text, #15232d);
}

.fwt-security-note span {
    color: var(--webtools-muted, #61717d);
}

/* ============================================================
   02. Hero
   ============================================================ */

.fwt-whiteboard-hero {
    padding: clamp(3rem, 7vw, 6rem) 0;
    background:
        radial-gradient(circle at 12% 18%, rgba(246, 189, 69, 0.22), transparent 24rem),
        radial-gradient(circle at 86% 8%, rgba(22, 129, 140, 0.20), transparent 26rem),
        linear-gradient(180deg, #ffffff 0%, #f5fbfc 100%);
}

.fwt-whiteboard-hero__content h1 {
    margin: 0;
    color: var(--webtools-text, #15232d);
    font-size: clamp(2.2rem, 1.4rem + 2.2vw, 3.8rem);
    line-height: 1.02;
    letter-spacing: -0.05em;
}

.fwt-whiteboard-hero__content p {
    max-width: 760px;
    margin-top: 1.25rem;
    color: var(--webtools-muted, #61717d);
    font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.fwt-whiteboard-hero__badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 1.75rem;
}

.fwt-whiteboard-hero__badges span {
    display: inline-flex;
    align-items: center;
    min-height: 2rem;
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    background: #eaf8fa;
    color: #0f5962;
    font-size: 0.9rem;
    font-weight: 850;
}

/* ============================================================
   03. Grundlayout
   ============================================================ */

.fwt-whiteboard-section {
    padding: clamp(2.5rem, 6vw, 5rem) 0;
}

.fwt-whiteboard-note-small {
    margin-top: 1rem;
    color: var(--webtools-muted, #61717d);
    font-size: 0.88rem;
}

.fwt-whiteboard-limits {
    display: grid;
    gap: 2rem;
}

.fwt-whiteboard-limits h2 {
    margin: 0;
    color: var(--webtools-text, #15232d);
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: -0.05em;
}

.fwt-whiteboard-limits__list {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.fwt-whiteboard-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;
}

/* ============================================================
   04. Bühne (Whiteboard selbst)
   ============================================================ */

.fwt-whiteboard-stage {
    display: grid;
    grid-template-rows: auto auto 1fr auto;
    height: min(78vh, 900px);
    overflow: hidden;
    border-radius: 1.4rem;
    background: #ffffff;
    border: 1px solid rgba(21, 35, 45, 0.12);
    box-shadow: 0 22px 60px rgba(21, 35, 45, 0.11);
}

.fwt-whiteboard-stage:fullscreen {
    height: 100vh;
    border-radius: 0;
}

/* ============================================================
   05. Werkzeugleiste
   ============================================================ */

.fwt-whiteboard-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1.25rem;
    padding: 0.85rem 1.1rem;
    background: #eef2f5;
    border-bottom: 1px solid rgba(21, 35, 45, 0.10);
}

.fwt-whiteboard-tool-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.fwt-whiteboard-tool-group--grow {
    flex: 1 1 160px;
    min-width: 160px;
}

.fwt-whiteboard-tool-btn,
.fwt-whiteboard-icon-btn {
    display: inline-grid;
    place-items: center;
    width: 2.6rem;
    height: 2.6rem;
    border-radius: 0.8rem;
    border: 1px solid rgba(21, 35, 45, 0.14);
    background: #ffffff;
    font-size: 1.15rem;
    cursor: pointer;
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

.fwt-whiteboard-tool-btn:hover,
.fwt-whiteboard-icon-btn:hover {
    background: #f5fbfc;
}

.fwt-whiteboard-tool-btn.is-active {
    background: var(--webtools-primary, #16818c);
    border-color: var(--webtools-primary, #16818c);
}

.fwt-whiteboard-tool-btn:focus-visible,
.fwt-whiteboard-icon-btn:focus-visible,
.fwt-whiteboard-swatch:focus-visible {
    outline: 3px solid rgba(246, 189, 69, 0.75);
    outline-offset: 2px;
}

.fwt-whiteboard-swatches {
    display: flex;
    gap: 0.4rem;
}

.fwt-whiteboard-swatch {
    width: 1.9rem;
    height: 1.9rem;
    border-radius: 999px;
    border: 2px solid #ffffff;
    box-shadow: 0 0 0 1px rgba(21, 35, 45, 0.18);
    background: var(--swatch, #101b28);
    cursor: pointer;
}

.fwt-whiteboard-swatch.is-active {
    box-shadow: 0 0 0 2px var(--webtools-primary, #16818c);
}

.fwt-whiteboard-color-picker input[type="color"] {
    width: 2.4rem;
    height: 2.4rem;
    padding: 0;
    border: 1px solid rgba(21, 35, 45, 0.14);
    border-radius: 0.6rem;
    background: none;
    cursor: pointer;
}

.fwt-whiteboard-size-label {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    width: 100%;
    color: var(--webtools-text, #15232d);
    font-size: 0.9rem;
    font-weight: 800;
}

.fwt-whiteboard-size-label input[type="range"] {
    flex: 1;
}

.fwt-whiteboard-toggle {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--webtools-text, #15232d);
    font-size: 0.88rem;
    font-weight: 800;
    white-space: nowrap;
    cursor: pointer;
}

/* ============================================================
   05b. Aufklappbarer Bereich – weitere Werkzeuge
   ============================================================ */

.fwt-whiteboard-more {
    border-bottom: 1px solid rgba(21, 35, 45, 0.10);
    background: #f5f8f9;
}

.fwt-whiteboard-more summary {
    cursor: pointer;
    padding: 0.65rem 1.1rem;
    color: var(--webtools-primary, #16818c);
    font-size: 0.88rem;
    font-weight: 850;
    list-style: none;
}

.fwt-whiteboard-more summary::-webkit-details-marker {
    display: none;
}

.fwt-whiteboard-more summary:focus-visible {
    outline: 3px solid rgba(246, 189, 69, 0.75);
    outline-offset: -2px;
}

.fwt-whiteboard-toolbar--more {
    border-bottom: none;
    background: none;
    padding: 0.5rem 1.1rem;
}

.fwt-whiteboard-toolbar--more .fwt-whiteboard-tool-btn {
    width: 2.2rem;
    height: 2.2rem;
    font-size: 1rem;
}

.fwt-whiteboard-format-group {
    padding-inline-start: 0.75rem;
    border-inline-start: 1px solid rgba(21, 35, 45, 0.14);
}

.fwt-whiteboard-format-btn {
    display: inline-grid;
    place-items: center;
    width: 2.2rem;
    height: 2.2rem;
    border-radius: 0.6rem;
    border: 1px solid rgba(21, 35, 45, 0.14);
    background: #ffffff;
    color: var(--webtools-text, #15232d);
    font-size: 0.95rem;
    cursor: pointer;
}

.fwt-whiteboard-format-btn:hover {
    background: #f5fbfc;
}

.fwt-whiteboard-format-btn:focus-visible {
    outline: 3px solid rgba(246, 189, 69, 0.75);
    outline-offset: 2px;
}

.fwt-whiteboard-font-label select {
    height: 2.2rem;
    padding: 0 0.5rem;
    border-radius: 0.6rem;
    border: 1px solid rgba(21, 35, 45, 0.14);
    background: #ffffff;
    color: var(--webtools-text, #15232d);
    font-size: 0.85rem;
}

.fwt-whiteboard-hint {
    margin: 0;
    color: var(--webtools-muted, #61717d);
    font-size: 0.82rem;
    flex-basis: 100%;
}

/* ============================================================
   06. Zeichenfläche
   ============================================================ */

.fwt-whiteboard-canvas-wrap {
    position: relative;
    overflow: hidden;
    background-color: #fbfcfd;
}

.fwt-whiteboard-canvas-wrap.is-grid-visible {
    background-image:
        linear-gradient(#e7edf1 1px, transparent 1px),
        linear-gradient(90deg, #e7edf1 1px, transparent 1px);
    background-size: 32px 32px;
}

.fwt-whiteboard-svg {
    display: block;
    width: 100%;
    height: 100%;
    touch-action: none;
}

.fwt-whiteboard-stroke {
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.fwt-whiteboard-stroke--marker {
    opacity: 0.35;
    mix-blend-mode: multiply;
}

.fwt-whiteboard-shape {
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.fwt-whiteboard-element {
    cursor: default;
}

.fwt-whiteboard-element[data-element-type="text"] .fwt-whiteboard-text,
.fwt-whiteboard-element[data-element-type="notiz"] .fwt-whiteboard-note {
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    font-family: inherit;
    font-size: 1rem;
    line-height: 1.4;
    outline: none;
    overflow: auto;
}

.fwt-whiteboard-text {
    padding: 0.3rem;
    background: rgba(255, 255, 255, 0.001);
    border: 1px dashed rgba(21, 35, 45, 0.25);
    border-radius: 0.4rem;
}

.fwt-whiteboard-note {
    padding: 0.75rem;
    background: #fff3b0;
    border-radius: 0.4rem;
    box-shadow: 0 10px 22px rgba(21, 35, 45, 0.18);
}

.fwt-whiteboard-image image {
    cursor: default;
}

.fwt-whiteboard-resize-handle {
    fill: var(--webtools-primary, #16818c);
    stroke: #ffffff;
    stroke-width: 1.5;
    cursor: nwse-resize;
}

.fwt-whiteboard-doc-card {
    display: grid;
    grid-template-rows: auto 1fr;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #ffffff;
    border: 1px solid rgba(21, 35, 45, 0.16);
    border-radius: 0.6rem;
    box-shadow: 0 10px 22px rgba(21, 35, 45, 0.14);
}

.fwt-whiteboard-doc-card__head {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.6rem;
    background: #eef2f5;
    border-bottom: 1px solid rgba(21, 35, 45, 0.10);
    font-size: 0.78rem;
    font-weight: 800;
    color: var(--webtools-text, #15232d);
}

.fwt-whiteboard-doc-card__name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.fwt-whiteboard-doc-card__open {
    color: var(--webtools-primary, #16818c);
    text-decoration: none;
    font-size: 0.75rem;
}

.fwt-whiteboard-doc-card__body {
    overflow: auto;
    padding: 0.5rem 0.7rem;
    font-size: 0.82rem;
    color: var(--webtools-text, #15232d);
}

.fwt-whiteboard-doc-card__body pre {
    margin: 0;
    white-space: pre-wrap;
    word-break: break-word;
    font-family: Consolas, 'Courier New', monospace;
}

.fwt-whiteboard-doc-card__body table {
    border-collapse: collapse;
    width: 100%;
    font-size: 0.78rem;
}

.fwt-whiteboard-doc-card__body th,
.fwt-whiteboard-doc-card__body td {
    border: 1px solid rgba(21, 35, 45, 0.14);
    padding: 0.3rem 0.5rem;
    text-align: left;
}

.fwt-whiteboard-doc-card__body th {
    background: #f5fbfc;
}

.fwt-whiteboard-doc-card__body embed {
    display: block;
    width: 100%;
    height: 100%;
    border: 0;
}

.fwt-whiteboard-doc-card--chip .fwt-whiteboard-doc-card__body {
    display: grid;
    place-items: center;
    color: var(--webtools-muted, #61717d);
    text-align: center;
}

/* ============================================================
   06b. Fußzeile
   ============================================================ */

.fwt-whiteboard-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 0.5rem 1.1rem;
    background: #eef2f5;
    border-top: 1px solid rgba(21, 35, 45, 0.10);
    color: var(--webtools-muted, #61717d);
    font-size: 0.82rem;
}

/* ============================================================
   07. Responsive
   ============================================================ */

@media (max-width: 760px) {
    .fwt-whiteboard-toolbar {
        gap: 0.75rem;
    }

    .fwt-whiteboard-tool-group--grow {
        order: 10;
        flex-basis: 100%;
    }

    .fwt-whiteboard-stage {
        height: 70vh;
    }
}