@import url("https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@600;700&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap");

:root {
    --bg-950: #ffffff;
    --bg-900: #f5f7fa;
    --bg-800: #e9eef4;
    --text-100: #123140;
    --text-300: #4b6570;
    --text-500: #6b7280;
    
    --gold-500: #0f7e9b; /* Thinking Experiment Teal */
    --gold-400: #13a1c4;
    --gold-300: #3db5d1;
    
    --pe-color-text: var(--gold-500);
    --ke-color-text: #dc8420; /* Complementary orange for KE */
    
    --surface: rgba(255, 255, 255, 0.95);
    --border: #c8dbe3;
    --shadow-lg: 0 12px 24px rgba(12, 54, 68, 0.12);
    
    --radius-lg: 14px;
    --radius-md: 10px;
}

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

body {
    font-family: "IBM Plex Sans", sans-serif;
    color: var(--text-100);
    background:
        radial-gradient(1200px 700px at 8% 2%, rgba(19, 143, 176, 0.18), transparent 62%),
        radial-gradient(900px 600px at 92% 98%, rgba(220, 132, 32, 0.18), transparent 66%),
        linear-gradient(165deg, #e9f4fb, #fff4dd);
    line-height: 1.45;
    min-height: 100vh;
}

.bg-grid {
    position: fixed;
    inset: 0;
    z-index: -1;
    background-image: linear-gradient(rgba(15, 126, 155, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(15, 126, 155, 0.06) 1px, transparent 1px);
    background-size: 42px 42px;
    mask-image: radial-gradient(circle at center, black 42%, transparent 95%);
}

.shell {
    width: min(1400px, calc(100% - 2rem));
    margin-inline: auto;
    padding: 2rem 0;
}

/* Hero Section */
.hero {
    border: 1px solid var(--border);
    border-left: 8px solid var(--gold-500);
    border-radius: var(--radius-lg);
    padding: 1.5rem 2rem;
    background: linear-gradient(130deg, rgba(255, 255, 255, 0.98), rgba(249, 250, 251, 0.98));
    box-shadow: var(--shadow-lg);
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.kicker {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gold-500);
    font-weight: 700;
}

h1 {
    font-family: "Cormorant Garamond", serif;
    font-size: 2.5rem;
    color: #1a2332;
    margin-top: 0.2rem;
}

.subtitle {
    color: var(--text-300);
    font-size: 1rem;
}

/* Simulation Grid */
.app-layout {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 1rem;
}

.panel {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    padding: 1.5rem;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.04);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.5rem;
}

.panel-title {
    font-family: "Cormorant Garamond", serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-100);
}

/* Model Styles */
.model-section {
    margin-bottom: 1.5rem;
}

.side-label {
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-300);
    text-transform: uppercase;
}

.notes-area {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    min-height: 50px;
    padding: 12px;
    background: rgba(15, 126, 155, 0.03);
    border: 1px dashed var(--border);
    border-radius: 8px;
}

.note {
    width: 36px;
    height: 36px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    box-shadow: 0 3px 6px rgba(0,0,0,0.08);
    transition: transform 0.2s;
    cursor: pointer;
}

.note:hover { transform: scale(1.1) rotate(2deg); }

.note.pe { background: #e0f2f1; color: var(--gold-500); border: 1px solid var(--gold-300); }
.note.ke { background: #fff3e0; color: #e65100; border: 1px solid #ffcc80; }

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    margin-top: 1rem;
}

.stat-card {
    padding: 0.75rem;
    background: #f8fafc;
    border: 1px solid var(--border);
    border-radius: 8px;
    text-align: center;
}

.stat-label {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-500);
    margin-bottom: 0.25rem;
}

.stat-value {
    font-family: "IBM Plex Sans", sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
}

/* Canvas Container */
.canvas-container {
    background: white;
    border-radius: 8px;
    border: 1px solid var(--border);
    margin-bottom: 1rem;
    overflow: hidden;
}

#ramp-canvas {
    width: 100%;
    height: 220px;
    display: block;
}

/* Guide Panel */
.guide-panel h2 {
    font-family: "Cormorant Garamond", serif;
    font-size: 1.5rem;
    color: var(--gold-500);
}

.task-box {
    background: rgba(15, 126, 155, 0.05);
    border-left: 4px solid var(--gold-500);
    padding: 1rem;
    margin: 1rem 0;
    font-size: 0.9rem;
}

.task-box ul { list-style: none; }
.task-box li { margin-bottom: 0.5rem; padding-left: 1rem; position: relative; }
.task-box li::before { content: "•"; position: absolute; left: 0; color: var(--gold-500); }

/* Controls */
.controls-section {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.control-group label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-300);
}

input[type=range] {
    accent-color: var(--gold-500);
    cursor: pointer;
}

.btn {
    border: 1px solid var(--gold-500);
    border-radius: 10px;
    background: linear-gradient(135deg, var(--gold-500), var(--gold-400));
    color: white;
    font-weight: 700;
    padding: 0.7rem;
    cursor: pointer;
    font-family: inherit;
    transition: filter 0.2s;
    font-size: 0.9rem;
}

.btn:hover { filter: brightness(1.1); }

.btn-secondary {
    background: white;
    color: var(--gold-500);
}

.button-actions {
    display: flex;
    gap: 0.5rem;
}

.work-badge {
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 700;
}

.work-badge.pos { background: #e0f2f1; color: var(--gold-500); }
.work-badge.neg { background: #ffebee; color: #c62828; }
.work-badge.none { background: #f1f3f5; color: var(--text-500); }

.annotation-box {
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(15, 126, 155, 0.08);
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--text-100);
    font-style: italic;
}