/**
 * chain-of-thought.css — ChainOfThought Panel Styling
 *
 * Styles for the streaming reasoning ribbon that displays real-time bot
 * decision narration. Complementary to TRAIBrain (current thinking) —
 * ChainOfThought is the historical decision stream.
 *
 * All classes prefixed `cot-` for namespace isolation.
 * Uses theme variables only (no magic colors).
 * Glass-box treatment matching PatternCard, TRAIBrain, OpenPositions.
 *
 * Layout: vertical scroll with mask-gradient fading older lines at top.
 * Lines stream in with subtle typewriter animation.
 * Hover to pause auto-scroll.
 */

/* ─────────────────────────────────────────────────────────────────────
   CONTAINER & LAYOUT
   ───────────────────────────────────────────────────────────────────── */

#chainOfThought {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
    flex: 1 1 auto;
    min-height: 240px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    backdrop-filter: blur(12px) saturate(140%);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3), inset 0 0 1px var(--glass-border);
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--text-primary);
    overflow: hidden;
    padding: 0;
    gap: 0;
}

/* ─────────────────────────────────────────────────────────────────────
   HEADER
   ───────────────────────────────────────────────────────────────────── */

.cot-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-bottom: 1px solid var(--glass-border);
    flex-shrink: 0;
    background: rgba(0, 0, 0, 0.2);
}

.cot-title {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: var(--text-primary);
    flex-shrink: 0;
}

.cot-status {
    font-size: 9px;
    color: var(--text-secondary);
    margin-left: auto;
    flex-shrink: 0;
    transition: color 0.2s ease;
}

.cot-status.paused {
    color: var(--loss-color);
    font-weight: 600;
}

/* ─────────────────────────────────────────────────────────────────────
   CONTENT AREA (SCROLLABLE)
   ───────────────────────────────────────────────────────────────────── */

.cot-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 8px 10px;
    min-height: 0;
    position: relative;

    /* Gradient mask: fade older lines at top */
    mask-image: linear-gradient(
        to bottom,
        transparent 0%,
        transparent 12%,
        black 20%,
        black 100%
    );
    -webkit-mask-image: linear-gradient(
        to bottom,
        transparent 0%,
        transparent 12%,
        black 20%,
        black 100%
    );
}

/* ─────────────────────────────────────────────────────────────────────
   INDIVIDUAL REASONING LINES
   ───────────────────────────────────────────────────────────────────── */

.cot-line {
    display: flex;
    align-items: baseline;
    gap: 8px;
    padding: 4px 6px;
    border-radius: 3px;
    background: transparent;
    border-left: 2px solid transparent;
    font-size: 10px;
    line-height: 1.4;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    flex-shrink: 0;
    animation: cot-line-enter 0.3s ease-out;
    min-height: 18px;
    word-break: break-word;
}

/* Enter animation for new lines */
@keyframes cot-line-enter {
    from {
        opacity: 0;
        transform: translateY(4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.cot-line:hover {
    background: rgba(255, 255, 255, 0.04);
    border-left-color: var(--ml-color);
}

/* Timestamp column */
.cot-time {
    font-size: 9px;
    color: var(--text-secondary);
    opacity: 0.7;
    flex-shrink: 0;
    min-width: 75px;
    font-feature-settings: 'tnum';
}

/* Text content */
.cot-text {
    flex: 1;
    color: var(--text-secondary);
    font-size: 10px;
    line-height: 1.4;
    min-width: 0;
    word-break: break-word;
    hyphens: auto;
}

/* Typewriter animation: character reveal */
.cot-text.typewriter {
    animation: cot-typewriter 0.4s steps(60, end) 1;
    overflow: hidden;
    white-space: pre-wrap;
    text-overflow: clip;
}

@keyframes cot-typewriter {
    from {
        max-width: 0;
        opacity: 0.3;
    }
    to {
        max-width: 100%;
        opacity: 1;
    }
}

/* After typewriter animation completes, show full width */
.cot-text.typewriter:not(:only-child) {
    animation-delay: 0;
}

/* ─────────────────────────────────────────────────────────────────────
   PILLS (SYMBOL & CONFIDENCE)
   ───────────────────────────────────────────────────────────────────── */

.cot-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 2px 6px;
    background: rgba(255, 215, 0, 0.12);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 10px;
    font-size: 8px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    color: var(--ml-color);
    flex-shrink: 0;
    white-space: nowrap;
}

.cot-pill:hover {
    background: rgba(255, 215, 0, 0.18);
    border-color: rgba(255, 215, 0, 0.5);
    box-shadow: 0 0 6px rgba(255, 215, 0, 0.15);
}

/* Confidence pill */
.cot-confidence {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 2px 6px;
    background: rgba(0, 255, 136, 0.12);
    border: 1px solid rgba(0, 255, 136, 0.3);
    border-radius: 10px;
    font-size: 8px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    color: var(--profit-color);
    flex-shrink: 0;
    white-space: nowrap;
}

.cot-confidence:hover {
    background: rgba(0, 255, 136, 0.18);
    border-color: rgba(0, 255, 136, 0.5);
    box-shadow: 0 0 6px rgba(0, 255, 136, 0.15);
}

/* ─────────────────────────────────────────────────────────────────────
   LINE TYPES (INFO, DECISION, WARNING, EXECUTION)
   ───────────────────────────────────────────────────────────────────── */

/* Info lines (default) */
.cot-line.info {
    border-left-color: var(--text-secondary);
    color: var(--text-secondary);
}

.cot-line.info .cot-text {
    color: var(--text-secondary);
}

/* Decision lines (strategy, logic, analysis) */
.cot-line.decision {
    border-left-color: var(--ml-color);
    color: var(--text-primary);
    background: rgba(255, 215, 0, 0.05);
}

.cot-line.decision .cot-text {
    color: var(--text-primary);
    font-weight: 500;
}

.cot-line.decision .cot-time {
    color: var(--ml-color);
    opacity: 0.9;
}

/* Warning lines (risk, threshold, alert) */
.cot-line.warning {
    border-left-color: var(--loss-color);
    background: rgba(255, 51, 102, 0.05);
}

.cot-line.warning .cot-text {
    color: var(--loss-color);
    font-weight: 500;
}

.cot-line.warning .cot-time {
    color: var(--loss-color);
    opacity: 0.9;
}

/* Execution lines (trade entry, order placement) */
.cot-line.execution {
    border-left-color: var(--profit-color);
    background: rgba(0, 255, 136, 0.05);
}

.cot-line.execution .cot-text {
    color: var(--profit-color);
    font-weight: 500;
}

.cot-line.execution .cot-time {
    color: var(--profit-color);
    opacity: 0.9;
}

/* ─────────────────────────────────────────────────────────────────────
   EMPTY STATE / PLACEHOLDER
   ───────────────────────────────────────────────────────────────────── */

.cot-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    color: var(--text-secondary);
    font-size: 10px;
    font-weight: 300;
    text-align: center;
    padding: 8px;
    animation: cot-pulse 2s ease-in-out infinite;
    opacity: 0.5;
}

@keyframes cot-pulse {
    0%, 100% {
        opacity: 0.4;
    }
    50% {
        opacity: 0.7;
    }
}

/* ─────────────────────────────────────────────────────────────────────
   SCOPE DIVIDER (TICKER CHANGE)
   ───────────────────────────────────────────────────────────────────── */

.cot-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 6px 8px;
    margin: 4px 0;
    border: none;
    border-top: 1px dashed rgba(255, 215, 0, 0.3);
    border-bottom: 1px dashed rgba(255, 215, 0, 0.15);
    font-size: 8px;
    color: var(--ml-color);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    font-weight: 600;
    flex-shrink: 0;
}

/* ─────────────────────────────────────────────────────────────────────
   SCROLLBAR STYLING
   ───────────────────────────────────────────────────────────────────── */

.cot-content::-webkit-scrollbar {
    width: 4px;
}

.cot-content::-webkit-scrollbar-track {
    background: transparent;
}

.cot-content::-webkit-scrollbar-thumb {
    background: rgba(255, 215, 0, 0.2);
    border-radius: 2px;
}

.cot-content::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 215, 0, 0.4);
}

/* Firefox scrollbar */
.cot-content {
    scrollbar-color: rgba(255, 215, 0, 0.2) transparent;
    scrollbar-width: thin;
}

/* ─────────────────────────────────────────────────────────────────────
   ACCESSIBILITY & MOTION
   ───────────────────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
    .cot-line,
    .cot-text.typewriter,
    .cot-placeholder,
    .cot-status,
    .cot-line:hover,
    .cot-pill:hover,
    .cot-confidence:hover {
        animation: none;
        transition: none;
    }
}

/* ─────────────────────────────────────────────────────────────────────
   RESPONSIVE & DARK MODE
   ───────────────────────────────────────────────────────────────────── */

@media (prefers-color-scheme: dark) {
    #chainOfThought {
        color-scheme: dark;
    }
}

/* Mobile-friendly stacking (if needed) */
@media (max-width: 768px) {
    #chainOfThought {
        min-height: 160px;
        font-size: 10px;
    }

    .cot-line {
        gap: 4px;
        padding: 3px 4px;
        min-height: 16px;
    }

    .cot-time {
        font-size: 8px;
        min-width: 65px;
    }

    .cot-text {
        font-size: 9px;
    }

    .cot-pill,
    .cot-confidence {
        font-size: 7px;
        padding: 1px 4px;
    }
}

@media (max-width: 480px) {
    #chainOfThought {
        min-height: 140px;
    }
}