/* ── qr.css — page-specific overrides & unique styles ── */

.header { margin-bottom: 2rem; }
.prompt-line { margin-bottom: 2rem; }

/* ── Tab switcher ── */
.tab-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}
.tab-btn {
    font-family: inherit;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    background: transparent;
    border: none;
    color: var(--accent);
    padding: 8px 16px 10px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: color 0.15s, border-color 0.15s;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active {
    color: var(--text-bright);
    border-bottom-color: var(--text-bright);
}

/* ── Panels ── */
.panel { display: none; }
.panel.active { display: block; }

.panel-note {
    font-size: 0.75rem;
    color: var(--text-dim);
    line-height: 1.7;
    margin-bottom: 1.6rem;
    padding-left: 2px;
}

/* ── Inputs ── */
.field { margin-bottom: 1.4rem; }
.field.hidden { display: none; }

textarea, input[type="text"], input[type="number"] {
    width: 100%;
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-family: inherit;
    font-size: 0.88rem;
    padding: 12px 14px;
    resize: vertical;
    transition: border-color 0.15s;
    line-height: 1.6;
}
textarea { min-height: 110px; }
textarea:focus, input[type="text"]:focus, input[type="number"]:focus {
    outline: none;
    border-color: var(--border-hover);
}
textarea::placeholder, input[type="text"]::placeholder { color: var(--text-dim); }

/* ── Option switches ── */
.enc-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 1.4rem;
}
.enc-label {
    font-size: 0.68rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
}
.enc-btn {
    font-family: inherit;
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--accent);
    padding: 5px 12px;
    border-radius: 4px;
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.enc-btn:hover { color: var(--text); border-color: var(--border-hover); }
.enc-btn.active { color: var(--text-bright); border-color: var(--border-hover); background: var(--bg3); }

/* ── Numeric & colour options ── */
.opt-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.1rem 1.2rem;
    margin-bottom: 1.6rem;
}
.opt .field-label { margin-bottom: 8px; }
@media (max-width: 520px) { .opt-grid { grid-template-columns: 1fr; } }

.color-row { display: flex; align-items: center; gap: 8px; }
.color-row input[type="text"] { font-size: 0.8rem; padding: 9px 12px; }
input[type="color"] {
    width: 42px;
    height: 40px;
    flex: 0 0 auto;
    padding: 3px;
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
}
input[type="color"]::-webkit-color-swatch { border: none; border-radius: 5px; }
input[type="color"]::-moz-color-swatch { border: none; border-radius: 5px; }

.check-row {
    display: flex;
    align-items: center;
    gap: 7px;
    margin-top: 9px;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    cursor: pointer;
}
.check-row input { accent-color: var(--text); cursor: pointer; }

/* ── Run button ── */
.run-btn { margin-top: 0.4rem; }
.run-btn::before { content: '▶'; font-size: 0.7rem; color: var(--text-dim); }

/* ── File picker ── */
.file-input { display: none; }
.file-drop {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border: 1px dashed var(--border-hover);
    border-radius: 8px;
    background: var(--bg2);
    color: var(--accent);
    font-size: 0.8rem;
    padding: 26px 16px;
    cursor: pointer;
    text-align: center;
    transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.file-drop:hover { color: var(--text); background: var(--bg3); }
.file-drop.filled { color: var(--text); border-style: solid; }
.file-drop.dragging { color: var(--text-bright); border-color: var(--text-bright); background: var(--bg3); }

.read-thumb { display: none; margin-bottom: 1.4rem; }
.read-thumb.shown { display: block; }
.read-thumb img {
    max-width: 200px;
    max-height: 200px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg3);
}

/* ── The code itself ──
   The checkerboard shows through a transparent background, so "no backdrop"
   looks different from "a white backdrop" rather than identical to it. */
.qr-result {
    display: none;
    margin-top: 1.8rem;
    animation: fadeIn 0.2s ease-out;
}
.qr-result.shown { display: block; }

.qr-stage {
    display: flex;
    justify-content: center;
    padding: 22px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background:
        repeating-conic-gradient(var(--glass) 0% 25%, transparent 0% 50%) 50% / 18px 18px;
}
.qr-stage img {
    width: 100%;
    max-width: 320px;
    height: auto;
}

.qr-meta {
    margin-top: 10px;
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-dim);
    text-align: center;
}

.qr-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-top: 1.2rem;
}

.copy-btn {
    font-family: inherit;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--accent);
    padding: 6px 14px;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    transition: color 0.15s, border-color 0.15s;
}
.copy-btn:hover { color: var(--text); border-color: var(--text-dim); }
.copy-btn.copied { color: var(--text-bright); border-color: var(--text-bright); }

/* ── Decoded text ── */
.result-block {
    display: none;
    margin-top: 1.8rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    animation: fadeIn 0.2s ease-out;
}
.result-block.error { border-color: var(--err-border); }

.result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 8px 14px;
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
}
.result-block.error .result-header { background: var(--err-bg); border-bottom-color: var(--err-border-soft); }

.result-label {
    font-size: 0.68rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
}
.result-block.error .result-label { color: var(--err-text); }

.result-body {
    padding: 14px;
    font-size: 0.85rem;
    line-height: 1.7;
    word-break: break-all;
    color: var(--text-bright);
    background: var(--bg3);
}
.result-body a { color: var(--text-bright); }

.result-meta {
    padding: 0 14px 12px;
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-dim);
    background: var(--bg3);
}

/* ── Short link credentials ── */
.cred-list {
    margin-top: 1.2rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}
.cred-row {
    display: flex;
    gap: 12px;
    padding: 10px 14px;
    background: var(--bg3);
    border-bottom: 1px solid var(--border);
}
.cred-row:last-child { border-bottom: none; }
.cred-key {
    flex: 0 0 110px;
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    padding-top: 2px;
}
.cred-val {
    flex: 1;
    font-size: 0.82rem;
    word-break: break-all;
    color: var(--text-bright);
}

.token-warning { margin: 0.9rem 0 0; color: var(--err-text); }