/* ============================================================
   ŁAŃCUCH POKARMOWY – EKOSYSTEM I PRZEPŁYW ENERGII
   style.css – identyczny system designu jak inne symulacje
   ============================================================ */

/* ─── TOKENS ────────────────────────────────────────────────────────────────── */
:root {
    --bg-primary:    #f0f4f8;
    --bg-secondary:  #ffffff;
    --bg-tertiary:   #e8eef4;
    --text-primary:  #1a202c;
    --text-secondary:#4a5568;
    --text-muted:    #718096;

    --accent-primary:   #22c55e;
    --accent-secondary: #16a34a;
    --accent-gradient:  linear-gradient(135deg, #22c55e 0%, #16a34a 50%, #8b5cf6 100%);

    --border-color:  #e2e8f0;
    --canvas-bg:     #f0f4f8;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.15);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    --bg-primary:    #0d1117;
    --bg-secondary:  #161b22;
    --bg-tertiary:   #21262d;
    --text-primary:  #f0f6fc;
    --text-secondary:#8b949e;
    --text-muted:    #6e7681;
    --border-color:  #30363d;
    --canvas-bg:     #060d14;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.5);
}

/* ─── RESET ─────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }
body {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 14px;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
}

/* ─── LAYOUT ─────────────────────────────────────────────────────────────────── */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.25rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
    gap: 1rem;
}

.header-left { display: flex; align-items: center; gap: 1rem; }

.app-header h1 {
    font-size: 1.15rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
}

.mode-badge {
    font-size: 0.72rem;
    font-weight: 600;
    padding: 0.25rem 0.65rem;
    border-radius: 20px;
    background: var(--accent-primary);
    color: #fff;
    white-space: nowrap;
}

.header-right { display: flex; gap: 0.5rem; }

.icon-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.4rem 0.65rem;
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition);
    color: var(--text-primary);
}
.icon-btn:hover { background: var(--bg-secondary); box-shadow: var(--shadow-sm); }

.main-content {
    display: grid;
    grid-template-columns: 270px 1fr 310px;
    flex: 1;
    overflow: hidden;
}

/* ─── PANELS ──────────────────────────────────────────────────────────────── */
.controls-panel,
.info-panel {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    overflow-y: auto;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}
.controls-panel { border-right: 1px solid var(--border-color); }
.info-panel     { border-left:  1px solid var(--border-color); }

.controls-panel h2,
.info-panel h2 {
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-muted);
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--border-color);
}

/* ─── CONTROL SECTIONS ───────────────────────────────────────────────────── */
.control-section {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.control-section h3 {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.mode-buttons,
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.mode-btn, .eco-btn {
    width: 100%;
    padding: 0.55rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 500;
    font-family: inherit;
    text-align: left;
    transition: var(--transition);
}
.mode-btn:hover, .eco-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}
.mode-btn.active, .eco-btn.active {
    background: var(--accent-primary);
    border-color: transparent;
    color: #fff;
    box-shadow: var(--shadow-sm);
}

.action-buttons { flex-direction: row; }
.action-btn {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 600;
    font-family: inherit;
    transition: var(--transition);
}
.action-btn.start {
    background: var(--accent-primary);
    border-color: transparent;
    color: #fff;
}
.action-btn.reset {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}
.action-btn:hover { filter: brightness(1.08); box-shadow: var(--shadow-sm); }

.speed-row {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-top: 0.4rem;
}
.speed-row label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}
.speed-row input[type="range"],
.lv-sliders input[type="range"] {
    width: 100%;
    accent-color: var(--accent-primary);
    cursor: pointer;
}

/* Checkbox */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.82rem;
    color: var(--text-secondary);
    padding: 0.2rem 0;
}
.checkbox-label input { display: none; }
.checkmark {
    width: 16px; height: 16px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    transition: var(--transition);
}
.checkbox-label input:checked + .checkmark {
    background: var(--accent-primary);
    border-color: transparent;
}
.checkbox-label input:checked + .checkmark::after {
    content: '✓';
    color: #fff;
    font-size: 10px;
    font-weight: 700;
}

/* Levels list */
.levels-list {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}
.level-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 0.6rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-tertiary);
}
.level-item:hover { border-color: var(--accent-primary); }
.level-item.active {
    background: var(--accent-primary);
    border-color: transparent;
    color: #fff;
}
.level-dot {
    width: 10px; height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}
.level-item-name {
    font-size: 0.78rem;
    font-weight: 500;
    flex: 1;
}
.level-energy {
    font-size: 0.7rem;
    opacity: 0.7;
    font-weight: 600;
}

/* LV sliders */
.lv-sliders {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}
.lv-sliders label {
    font-size: 0.77rem;
    color: var(--text-secondary);
    margin-top: 0.3rem;
    display: flex;
    justify-content: space-between;
}
.lv-sliders label span {
    color: var(--accent-primary);
    font-weight: 600;
}

/* ─── SIMULATION AREA ────────────────────────────────────────────────────── */
.simulation-area {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}
.canvas-wrapper {
    flex: 1;
    position: relative;
    overflow: hidden;
}
canvas {
    display: block;
    width: 100%;
    height: 100%;
}

/* ─── INFO PANEL CARDS ────────────────────────────────────────────────────── */
.info-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.85rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.info-card h3 {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.07em;
}
.info-card p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.55;
}

.stage-card {
    background: linear-gradient(135deg, rgba(34,197,94,0.08) 0%, rgba(139,92,246,0.08) 100%);
    border-color: rgba(34,197,94,0.3);
}
.stage-header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}
.stage-header h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: none;
    letter-spacing: 0;
}

/* Values grid */
.values-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}
.value-item {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    padding: 0.4rem 0.5rem;
}
.value-item .label {
    font-size: 0.68rem;
    color: var(--text-muted);
    font-weight: 500;
}
.value-item .data {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Progress bar */
.gc-bar {
    height: 7px;
    background: var(--border-color);
    border-radius: 20px;
    overflow: hidden;
}
.gc-bar-fill {
    height: 100%;
    background: var(--accent-primary);
    border-radius: 20px;
    transition: width 0.5s ease;
}
.progress-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: right;
}

/* Pyramid mini */
.pyramid-mini {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    padding: 0.25rem 0;
}
.pyr-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.pyr-bar-wrap {
    flex: 1;
    height: 18px;
    background: var(--bg-secondary);
    border-radius: 4px;
    overflow: hidden;
}
.pyr-bar {
    height: 100%;
    border-radius: 4px;
    display: flex;
    align-items: center;
    padding-left: 6px;
    font-size: 0.65rem;
    font-weight: 700;
    color: #fff;
    transition: width 0.5s ease;
    white-space: nowrap;
    overflow: hidden;
}
.pyr-label {
    font-size: 0.65rem;
    width: 30px;
    text-align: right;
    color: var(--text-muted);
    flex-shrink: 0;
}

/* Physics info card */
.physics-info {
    background: linear-gradient(135deg, rgba(139,92,246,0.06) 0%, rgba(34,197,94,0.06) 100%);
    border-color: rgba(139,92,246,0.2);
}

/* ─── SCROLLBAR ──────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-tertiary); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }