/* ═══════════════════════════════════════════════════════════════════════════
   vkb.css – Virtual QWERTZ Keyboard Styles
   Uses CSS custom properties from theme.css for dark/light mode support
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Overlay backdrop ────────────────────────────────────────────────────── */
.vkb_overlay {
    position: fixed;
    inset: 0;
    z-index: 9998;
    background: transparent;
}

/* ── Keyboard container ──────────────────────────────────────────────────── */
.vkb {
    z-index: 9999;
    box-sizing: border-box;
    -webkit-user-select: none;
    user-select: none;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.vkb_floating {
    position: absolute;
    background: var(--bg-surface);
    border: 1px solid var(--border-separator);
    border-radius: 0.5vw;
    box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.3);
    padding: 0.4vw 0.6vw 0.6vw;
    max-width: 40vw;
    animation: vkb_pop_in 0.15s ease-out;
}

.vkb_inline {
    background: var(--bg-surface);
    border-top: 1px solid var(--border-separator);
    padding: 0.4vw 0.8vw 0.6vw;
}

@keyframes vkb_pop_in {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Size variants (CSS transform) ─────────────────────────────────────── */
.vkb_size_small  { transform: scale(1); }
.vkb_size_medium { transform: scale(1.5); }
.vkb_size_large  { transform: scale(2); }

/* ── Top bar with size buttons + "Fertig" ──────────────────────────────── */
.vkb_bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.2vw 0.4vw 0.3vw;
}

.vkb_size_group {
    display: flex;
    gap: 0.2vw;
}

.vkb_size_btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.6vw;
    height: 1.6vw;
    border-radius: 0.25vw;
    border: 1px solid var(--border-subtle);
    background: var(--bg-input);
    color: var(--text-muted);
    cursor: pointer;
    font-weight: 600;
    transition: background 0.1s;
}

.vkb_size_btn[data-size="small"]  { font-size: 0.6vw; }
.vkb_size_btn[data-size="medium"] { font-size: 0.8vw; }
.vkb_size_btn[data-size="large"]  { font-size: 1.0vw; }

.vkb_size_btn:hover {
    background: var(--bg-hover);
}

.vkb_size_active {
    background: #4a9eff !important;
    color: #fff !important;
    border-color: #4a9eff;
}

.vkb_bar_close {
    color: #4a9eff;
    font-size: 0.8vw;
    font-weight: 600;
    padding: 0.15vw 0.6vw;
    cursor: pointer;
    border-radius: 0.3vw;
    transition: background 0.15s;
}

.vkb_bar_close:hover {
    background: var(--bg-hover-subtle);
}

/* ── Rows ────────────────────────────────────────────────────────────────── */
.vkb_rows {
    display: flex;
    flex-direction: column;
    gap: 0.3vw;
}

/* ── Single row ──────────────────────────────────────────────────────────── */
.vkb_row {
    display: flex;
    justify-content: center;
    gap: 0.3vw;
}

/* ── Base key ────────────────────────────────────────────────────────────── */
.vkb_key {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 2.2vw;
    min-width: 2.2vw;
    padding: 0 0.3vw;
    border-radius: 0.3vw;
    font-size: 0.85vw;
    cursor: pointer;
    transition: background 0.1s, transform 0.08s;
    -webkit-tap-highlight-color: transparent;
}

/* Character keys */
.vkb_key_char {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
    flex: 0 0 auto;
    min-width: 2.6vw;
}

.vkb_key_char:hover {
    background: var(--bg-hover);
}

.vkb_key_char:active,
.vkb_key_char.vkb_key_pressed {
    background: var(--bg-hover);
    transform: scale(0.95);
}

/* Function keys (shift, backspace, enter, mode) */
.vkb_key_fn {
    background: var(--bg-subtle-medium);
    color: var(--text-muted);
    border: 1px solid var(--border-subtle);
    font-size: 0.75vw;
    font-weight: 600;
    min-width: 3vw;
    padding: 0 0.5vw;
}

.vkb_key_fn:hover {
    background: var(--bg-subtle-strong);
}

.vkb_key_fn:active,
.vkb_key_fn.vkb_key_pressed {
    background: var(--bg-subtle-strong);
    transform: scale(0.95);
}

/* Active shift / caps lock */
.vkb_key_active {
    background: var(--text-primary) !important;
    color: var(--bg-surface) !important;
}

/* Backspace */
.vkb_key_backspace {
    font-size: 1vw;
    min-width: 3.5vw;
}

/* Enter */
.vkb_key_enter {
    background: #4a9eff;
    color: #fff;
    border-color: #4a9eff;
    font-size: 1vw;
    min-width: 3.5vw;
}

.vkb_key_enter:hover {
    background: #3a8eef;
}

.vkb_key_enter:active,
.vkb_key_enter.vkb_key_pressed {
    background: #2a7edf;
    transform: scale(0.95);
}

/* Space bar */
.vkb_key_space {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
    flex: 1 1 auto;
    min-width: 12vw;
}

.vkb_key_space:hover {
    background: var(--bg-hover);
}

.vkb_key_space:active,
.vkb_key_space.vkb_key_pressed {
    background: var(--bg-hover);
    transform: scale(0.98);
}

/* Shift key */
.vkb_key_shift {
    font-size: 0.95vw;
    min-width: 3.5vw;
}

/* Mode switch key (?123 / ABC) */
.vkb_key_mode {
    font-size: 0.7vw;
    letter-spacing: 0.03em;
    min-width: 3.5vw;
}