/* ═══════════════════════════════════════════════════════════
   turtlefreeze — style.css
═══════════════════════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --c-bg:          #050a05;
    --c-surface:     #0b140b;
    --c-surface2:    #101c10;
    --c-border:      #1a3a1a;
    --c-border2:     #254025;
    --c-phosphor:    #39ff14;
    --c-phosphor-dim:#1a7a08;
    --c-phosphor-lo: #0d3d07;
    --c-accent:      #00e5ff;
    --c-accent-dim:  #005f6b;
    --c-warn:        #ff6b00;
    --c-warn-dim:    #6b2d00;
    --c-error:       #ff2244;
    --c-text:        #c8e6c8;
    --c-text-dim:    #5a7a5a;
    --font-mono:     'Courier New', 'Lucida Console', monospace;
    --tape-cell-w:   52px;
    --tape-cell-h:   56px;
}

html { background: var(--c-bg); color: var(--c-text); font-family: var(--font-mono); font-size: 13px; line-height: 1.5; }
body { min-height: 100vh; display: flex; flex-direction: column; overflow-x: hidden; }

/* ─── Header ─── */
.app-header {
    padding: 14px 28px;
    border-bottom: 1px solid var(--c-border);
    display: flex;
    align-items: center;
    gap: 18px;
    background: var(--c-surface);
}
.title-main {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 0.18em;
    color: var(--c-phosphor);
    text-shadow: 0 0 12px var(--c-phosphor), 0 0 30px #1aff1a55;
}
.header-sub { font-size: 11px; letter-spacing: 0.2em; color: var(--c-text-dim); margin-left: 12px; }
.btn-help {
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    color: var(--c-accent);
    border: 1px solid var(--c-accent-dim);
    background: transparent;
    padding: 5px 12px;
    cursor: pointer;
    border-radius: 2px;
}
.btn-help:hover { background: #001a1f; }

/* ─── Etykiety ─── */
.panel-label, .tape-label, .presets-label {
    font-size: 10px; letter-spacing: 0.25em; color: var(--c-text-dim);
    margin-bottom: 6px; padding-bottom: 4px; border-bottom: 1px solid var(--c-border);
}
.tape-hint { font-size: 9px; letter-spacing: 0.1em; color: var(--c-border2); }

/* ─── Taśma ─── */
.tape-section { padding: 14px 16px 10px; background: var(--c-surface); border-bottom: 2px solid var(--c-border2); }
.tape-container {
    display: flex; flex-direction: row; overflow-x: auto; gap: 3px; padding-bottom: 6px;
    scrollbar-width: thin; scrollbar-color: var(--c-phosphor-dim) var(--c-surface2);
}
.tape-container::-webkit-scrollbar { height: 4px; }
.tape-container::-webkit-scrollbar-track { background: var(--c-surface2); }
.tape-container::-webkit-scrollbar-thumb { background: var(--c-phosphor-dim); border-radius: 2px; }

.tape-cell {
    display: flex; flex-direction: column; align-items: center;
    min-width: var(--tape-cell-w); height: var(--tape-cell-h);
    border: 1px solid var(--c-border); background: var(--c-bg);
    border-radius: 2px; flex-shrink: 0;
    transition: border-color 0.12s, background 0.12s;
    cursor: pointer;
    position: relative;
}
.tape-cell:hover { border-color: var(--c-accent-dim); }
.tape-cell-index { font-size: 9px; color: var(--c-text-dim); padding-top: 4px; line-height: 1; }
.tape-cell-value {
    font-size: 18px; font-weight: 700; color: var(--c-phosphor-dim);
    flex: 1; display: flex; align-items: center; justify-content: center;
}
.tape-cell.active { border-color: var(--c-phosphor); background: var(--c-phosphor-lo); box-shadow: 0 0 10px var(--c-phosphor-dim); }
.tape-cell.active .tape-cell-index { color: var(--c-phosphor-dim); }
.tape-cell.active .tape-cell-value { color: var(--c-phosphor); text-shadow: 0 0 8px var(--c-phosphor); }
.tape-cell.nonzero .tape-cell-value { color: var(--c-accent); }

/* Inline edit komórki */
.tape-cell-input {
    width: 44px; height: 28px;
    background: var(--c-bg); border: 1px solid var(--c-phosphor);
    color: var(--c-phosphor); font-family: var(--font-mono); font-size: 14px; font-weight: 700;
    text-align: center; outline: none; border-radius: 2px;
}

/* ─── Sekcja środkowa ─── */
.editor-section {
    display: grid; grid-template-columns: 1fr 200px 1fr;
    border-bottom: 2px solid var(--c-border2); min-height: 220px;
}
.editor-panel { padding: 14px 16px; border-right: 1px solid var(--c-border); display: flex; flex-direction: column; background: var(--c-surface2); }
#codeInput {
    flex: 1; background: var(--c-bg); border: 1px solid var(--c-border);
    color: var(--c-phosphor); font-family: var(--font-mono); font-size: 15px; line-height: 1.6;
    padding: 10px; resize: none; outline: none; border-radius: 2px; min-height: 150px;
    caret-color: var(--c-phosphor);
}
#codeInput:focus { border-color: var(--c-phosphor-dim); }
#codeInput::placeholder { color: var(--c-text-dim); font-size: 12px; }

/* ─── Panel sterowania ─── */
.controls-panel { padding: 14px 12px; border-right: 1px solid var(--c-border); display: flex; flex-direction: column; gap: 10px; background: var(--c-surface); }
.btn-group { display: flex; flex-direction: column; gap: 5px; }
.btn {
    font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.12em; font-weight: 700;
    border: 1px solid; border-radius: 2px; padding: 7px 10px; cursor: pointer;
    transition: background 0.1s, box-shadow 0.1s; text-align: left;
}
.btn:disabled { opacity: 0.35; cursor: not-allowed; }
.btn-run    { color: var(--c-phosphor); border-color: var(--c-phosphor-dim); background: var(--c-phosphor-lo); }
.btn-run:not(:disabled):hover    { background: #0f2e0f; box-shadow: 0 0 10px var(--c-phosphor-dim); }
.btn-step   { color: var(--c-accent);   border-color: var(--c-accent-dim);   background: transparent; }
.btn-step:not(:disabled):hover   { background: #001a1f; }
.btn-stop   { color: var(--c-warn);     border-color: var(--c-warn-dim);     background: transparent; }
.btn-stop:not(:disabled):hover   { background: #1a0a00; }
.btn-reset  { color: var(--c-text-dim); border-color: var(--c-border);       background: transparent; }
.btn-reset:not(:disabled):hover  { background: var(--c-surface2); }

.speed-control { display: flex; align-items: center; gap: 6px; font-size: 10px; color: var(--c-text-dim); letter-spacing: 0.12em; }
#speedSlider { flex: 1; accent-color: var(--c-phosphor-dim); height: 3px; }
#speedLabel { min-width: 14px; text-align: right; color: var(--c-text); }

.checkbox-control { display: flex; align-items: center; }
.checkbox-label { font-size: 11px; color: var(--c-text-dim); letter-spacing: 0.08em; cursor: pointer; display: flex; align-items: center; gap: 6px; }
.checkbox-label input[type="checkbox"] { accent-color: var(--c-phosphor-dim); cursor: pointer; }

.info-panel { border: 1px solid var(--c-border); padding: 8px; background: var(--c-bg); border-radius: 2px; display: flex; flex-direction: column; gap: 4px; }
.info-row { display: flex; justify-content: space-between; font-size: 11px; }
.info-key { color: var(--c-text-dim); letter-spacing: 0.1em; }
.info-val { color: var(--c-phosphor); font-weight: 700; }

.presets { display: flex; flex-direction: column; gap: 4px; }
.preset-btn { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; color: var(--c-text-dim); border: 1px solid var(--c-border); background: transparent; padding: 5px 8px; cursor: pointer; text-align: left; border-radius: 2px; transition: color 0.1s, border-color 0.1s; }
.preset-btn:hover { color: var(--c-accent); border-color: var(--c-accent-dim); }

/* ─── Podgląd kodu ─── */
.code-display-panel { padding: 14px 16px; display: flex; flex-direction: column; background: var(--c-surface2); }
.code-display { flex: 1; background: var(--c-bg); border: 1px solid var(--c-border); padding: 10px; overflow: auto; font-size: 15px; line-height: 1.8; word-break: break-all; border-radius: 2px; min-height: 150px; color: var(--c-text-dim); }
.code-display .char { display: inline; border-radius: 1px; }
.code-display .char.bf-move    { color: #5ba85b; }
.code-display .char.bf-arith   { color: var(--c-phosphor-dim); }
.code-display .char.bf-loop    { color: #7abaff; }
.code-display .char.turtle-rot { color: #ff9f4a; }
.code-display .char.turtle-move{ color: var(--c-accent); }
.code-display .char.turtle-pen { color: #d78fff; }
.code-display .char.active-ip  { background: var(--c-phosphor); color: var(--c-bg); box-shadow: 0 0 6px var(--c-phosphor); }

/* ─── Canvas ─── */
.canvas-section { background: var(--c-bg); display: flex; justify-content: center; border-top: 2px solid var(--c-border2); }
.canvas-wrapper {
    position: relative; width: 100%; max-width: 900px;
    cursor: grab;
    user-select: none;
}
.canvas-wrapper.panning { cursor: grabbing; }
#canvasLines, #canvasCursor {
    display: block; width: 100%;
    background: #020702;
    position: absolute; top: 0; left: 0;
}
#canvasLines  { position: relative; }
#canvasCursor { background: transparent; }

.canvas-overlay-label { position: absolute; top: 8px; right: 12px; font-size: 9px; letter-spacing: 0.25em; color: var(--c-phosphor-lo); pointer-events: none; }

.viewport-info {
    position: absolute; bottom: 8px; left: 12px;
    font-size: 10px; letter-spacing: 0.1em; color: var(--c-text-dim);
    background: rgba(5,10,5,0.75); padding: 3px 8px; border-radius: 2px;
    pointer-events: none;
}
.viewport-hint {
    position: absolute; bottom: 8px; right: 12px;
    font-size: 9px; letter-spacing: 0.08em; color: var(--c-phosphor-lo);
    pointer-events: none;
}

/* ─── Pasek błędu ─── */
.error-bar { position: fixed; bottom: 0; left: 0; right: 0; background: var(--c-error); color: #fff; font-family: var(--font-mono); font-size: 12px; padding: 10px 20px; z-index: 100; text-align: center; font-weight: 700; }

/* ─── Modal pomocy ─── */
.modal-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.75);
    display: flex; align-items: center; justify-content: center;
    z-index: 200;
}
.modal {
    background: var(--c-surface); border: 1px solid var(--c-border2);
    border-radius: 3px; width: min(680px, 95vw); max-height: 85vh;
    display: flex; flex-direction: column;
    box-shadow: 0 0 40px #000;
}
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 14px 18px; border-bottom: 1px solid var(--c-border); }
.modal-title { font-size: 14px; font-weight: 700; letter-spacing: 0.15em; color: var(--c-phosphor); }
.modal-close { background: transparent; border: 1px solid var(--c-border); color: var(--c-text-dim); font-family: var(--font-mono); font-size: 14px; padding: 2px 8px; cursor: pointer; border-radius: 2px; }
.modal-close:hover { border-color: var(--c-error); color: var(--c-error); }
.modal-body { padding: 18px; overflow-y: auto; display: flex; flex-direction: column; gap: 14px; }
.modal-body p { color: var(--c-text); font-size: 12px; line-height: 1.7; }
.modal-body a { color: var(--c-accent); }
.modal-body h3 { font-size: 11px; letter-spacing: 0.2em; color: var(--c-text-dim); border-bottom: 1px solid var(--c-border); padding-bottom: 4px; }
.modal-body ul { padding-left: 16px; color: var(--c-text); font-size: 12px; line-height: 1.8; }
.help-note { font-size: 11px; color: var(--c-text-dim) !important; }
.help-table { border-collapse: collapse; width: 100%; font-size: 12px; }
.help-table tr { border-bottom: 1px solid var(--c-border); }
.help-table td { padding: 5px 8px; color: var(--c-text); }
.help-table td.cmd { color: var(--c-phosphor); font-weight: 700; min-width: 120px; letter-spacing: 0.05em; white-space: nowrap; }

/* ─── Scrollbary ─── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--c-surface); }
::-webkit-scrollbar-thumb { background: var(--c-border2); border-radius: 2px; }

.presets {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
}