/* Personality Protocol — Warm Editorial Design */

* { box-sizing: border-box; }

:root {
    /* Color palette */
    --bg: #FAF9F7;
    --bg-subtle: #F5F4F1;
    --text: #2C2825;
    --text-secondary: #6B6560;
    --text-muted: #9A9590;
    --border: rgba(44, 40, 37, 0.12);
    --border-strong: rgba(44, 40, 37, 0.2);
    --accent: #C4704B;
    --accent-muted: #D4A088;

    /* Typography */
    --font-serif: 'Georgia', 'Times New Roman', serif;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Mono', monospace;

    /* Spacing */
    --content-width: 640px;
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 40px;
    --space-xl: 64px;
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    margin: 0;
    padding: var(--space-lg) var(--space-md);
    min-height: 100vh;
    line-height: 1.6;
    font-size: 16px;
}

/* Typography */
h1, h2, h3 {
    font-family: var(--font-serif);
    font-weight: 400;
    line-height: 1.3;
    margin: 0;
}

h1 {
    font-size: 2.25rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 1.5rem;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.125rem;
}

p {
    margin: 0;
}

/* Layout container */
.content-wrap {
    max-width: var(--content-width);
    margin: 0 auto;
}

/* ============================================
   Landing Page
   ============================================ */

#landing {
    max-width: var(--content-width);
    margin: 0 auto;
}

/* Hero */
.hero {
    text-align: center;
    padding: var(--space-xl) 0 var(--space-lg);
    border-bottom: 1px solid var(--border);
    margin-bottom: var(--space-lg);
}

.hero h1 {
    color: var(--text);
    margin-bottom: var(--space-sm);
}

.tagline {
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 480px;
    margin: 0 auto;
    line-height: 1.6;
}

.hero-cta {
    margin-top: var(--space-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.assessment-sentence {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--text);
    display: flex;
    align-items: baseline;
    gap: 0.3em;
    flex-wrap: wrap;
    justify-content: center;
}

.sentence-prefix {
    white-space: nowrap;
}

.assessment-sentence select {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.25rem;
    color: var(--accent);
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--accent-muted);
    padding: 0 0.1em 2px 0;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23C4704B' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right center;
    padding-right: 1.2em;
}

.assessment-sentence select:focus {
    outline: none;
    border-bottom-color: var(--accent);
}

.assessment-sentence select:hover {
    border-bottom-color: var(--accent);
}

/* Concept Section */
.concept-section {
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border);
    margin-bottom: var(--space-lg);
}

.concept-section h2 {
    text-align: center;
    margin-bottom: var(--space-sm);
}

.concept-intro {
    text-align: center;
    color: var(--text-secondary);
    max-width: 520px;
    margin: 0 auto var(--space-lg);
    line-height: 1.7;
}

/* Grid Comparison */
.grid-comparison {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.context-card {
    text-align: center;
    min-width: 160px;
}

.context-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
}

.mini-grid {
    display: flex;
    flex-direction: column;
    gap: 3px;
    margin-bottom: var(--space-xs);
}

.grid-row {
    display: flex;
    gap: 3px;
    justify-content: center;
}

.grid-cell {
    width: 24px;
    height: 16px;
    border-radius: 2px;
}

.grid-cell.high { background: var(--accent); }
.grid-cell.medium { background: var(--accent-muted); opacity: 0.7; }
.grid-cell.low { background: var(--accent-muted); opacity: 0.3; }

.trait-labels {
    display: flex;
    justify-content: center;
    gap: 3px;
}

.trait-labels span {
    width: 24px;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-muted);
}

.vs-divider {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1rem;
    color: var(--text-muted);
    padding-top: var(--space-md);
}

/* How It Works Section */
.how-section {
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border);
    margin-bottom: var(--space-lg);
}

.how-section h2 {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.steps {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    max-width: 400px;
    margin: 0 auto var(--space-lg);
}

.step {
    display: flex;
    align-items: baseline;
    gap: var(--space-sm);
}

.step-num {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-muted);
    flex-shrink: 0;
}

.step-content h3 {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 1rem;
    color: var(--text);
    margin-bottom: 4px;
}

.step-content p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Embedding Visualization */
.embedding-viz {
    max-width: 360px;
    margin: 0 auto;
}

.embedding-space {
    position: relative;
    height: 180px;
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
    perspective: 500px;
}

.axis {
    position: absolute;
    background: var(--border-strong);
}

.axis-x {
    width: 75%;
    height: 1px;
    top: 70%;
    left: 12%;
}

.axis-y {
    width: 1px;
    height: 55%;
    top: 22%;
    left: 15%;
}

.axis-z {
    width: 45%;
    height: 1px;
    top: 50%;
    left: 15%;
    transform: rotate(-30deg);
    transform-origin: left center;
}

.point {
    position: absolute;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    left: var(--x);
    top: var(--y);
    transform: scale(var(--z)) translate(-50%, -50%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 8px;
    font-weight: 600;
    color: white;
}

.point-response {
    background: var(--text-secondary);
}

.point-trait {
    background: var(--accent);
    width: 20px;
    height: 20px;
}

.connection {
    display: none;
}

.viz-caption {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8125rem;
    margin-top: var(--space-sm);
}

/* CTA Button */
.btn-cta {
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 500;
    background: var(--text);
    color: var(--bg);
    border: none;
    padding: 14px 32px;
    border-radius: 4px;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn-cta:hover {
    opacity: 0.85;
}

/* ============================================
   Interview Section — Editorial Chat
   ============================================ */

#interview {
    max-width: var(--content-width);
    margin: var(--space-lg) auto;
    display: flex;
    flex-direction: column;
    min-height: 70vh;
}

/* Chat Header */
.chat-header {
    text-align: center;
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border);
    margin-bottom: var(--space-lg);
}

.chat-title {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text);
}

.chat-progress {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Chat Messages */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding-bottom: var(--space-lg);
}

/* Message styling — no bubbles */
.chat-exchange {
    margin-bottom: var(--space-xl);
}

.chat-sender {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: var(--space-xs);
}

.chat-bubble {
    max-width: 100%;
    line-height: 1.7;
}

.chat-bubble.bot {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--text);
    margin-bottom: var(--space-lg);
    padding: 0;
    background: none;
    border-radius: 0;
}

.chat-bubble.user {
    font-family: var(--font-sans);
    font-size: 1rem;
    color: var(--text-secondary);
    padding: var(--space-sm) 0;
    padding-left: var(--space-md);
    border-left: 2px solid var(--border-strong);
    background: none;
    border-radius: 0;
    margin-bottom: var(--space-lg);
}

/* Typing indicator */
.typing-indicator {
    display: flex;
    gap: 6px;
    padding: var(--space-sm) 0;
}

.typing-indicator span {
    width: 6px;
    height: 6px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: typingFade 1.4s infinite;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingFade {
    0%, 60%, 100% { opacity: 0.3; }
    30% { opacity: 1; }
}

/* Chat Input */
.chat-input-container {
    border-top: 1px solid var(--border);
    padding-top: var(--space-md);
    display: flex;
    align-items: flex-end;
    gap: var(--space-sm);
}

.chat-input-container textarea {
    flex: 1;
    border: 1px solid var(--border-strong);
    border-radius: 4px;
    padding: 12px 14px;
    font-size: 1rem;
    font-family: var(--font-sans);
    line-height: 1.5;
    resize: none;
    min-height: 48px;
    max-height: 160px;
    background: white;
    color: var(--text);
}

.chat-input-container textarea::placeholder {
    color: var(--text-muted);
}

.chat-input-container textarea:focus {
    outline: none;
    border-color: var(--text-secondary);
}

/* Send Button */
.btn-send {
    width: 44px;
    height: 44px;
    border-radius: 4px;
    background: var(--text);
    color: var(--bg);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: opacity 0.2s;
    padding: 0;
}

.btn-send:hover {
    opacity: 0.85;
}

.btn-send:disabled {
    background: var(--text-muted);
    cursor: not-allowed;
}

.btn-send svg {
    width: 18px;
    height: 18px;
}

/* Voice Controls */
#voice-controls {
    display: flex;
    gap: 6px;
}

.btn-voice {
    width: 40px;
    height: 40px;
    border-radius: 4px;
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border-strong);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.2s;
    padding: 0;
}

.btn-voice:hover {
    border-color: var(--text-secondary);
    color: var(--text-secondary);
}

.btn-voice.active {
    background: var(--text);
    border-color: var(--text);
    color: var(--bg);
}

.btn-voice svg {
    width: 18px;
    height: 18px;
}

/* Skip Link */
.btn-skip-link {
    background: none;
    border: none;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    color: var(--text-muted);
    padding: var(--space-sm) 0;
    cursor: pointer;
    text-align: center;
    width: 100%;
    margin-top: var(--space-xs);
}

.btn-skip-link:hover {
    color: var(--text-secondary);
}

/* ============================================
   Results Section
   ============================================ */

#results {
    display: none;
    max-width: var(--content-width);
    margin: 0 auto;
}

/* Results Hero */
.results-hero {
    text-align: center;
    padding: var(--space-xl) 0 var(--space-lg);
    border-bottom: 1px solid var(--border);
    margin-bottom: var(--space-lg);
}

.results-hero h1 {
    color: var(--text);
    margin-bottom: var(--space-xs);
}

.results-tagline {
    color: var(--text-secondary);
    font-size: 1.0625rem;
}

/* Results Summary */
.results-summary {
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border);
    margin-bottom: var(--space-lg);
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
}

.summary-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.summary-icon svg {
    width: 24px;
    height: 24px;
}

.summary-text {
    font-size: 1.0625rem;
    line-height: 1.75;
    color: var(--text);
}

/* Traits Section */
.traits-section {
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border);
    margin-bottom: var(--space-lg);
}

.traits-section h2 {
    text-align: center;
    margin-bottom: var(--space-xs);
}

.traits-intro {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    font-size: 0.9375rem;
}

.trait-bars {
    max-width: 480px;
    margin: 0 auto;
}

.trait-row {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-md);
    padding: var(--space-sm) 0;
}

.trait-label {
    width: 120px;
    font-family: var(--font-serif);
    font-size: 1rem;
    color: var(--text);
}

.trait-bar-container {
    flex: 1;
    height: 8px;
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: 2px;
    position: relative;
    overflow: hidden;
}

.trait-bar {
    position: absolute;
    top: 0;
    height: 100%;
    transition: width 0.6s ease-out;
}

.trait-bar.positive {
    left: 50%;
    background: var(--accent);
}

.trait-bar.negative {
    right: 50%;
    background: var(--accent);
}

.trait-bar-center {
    position: absolute;
    left: 50%;
    top: 0;
    width: 1px;
    height: 100%;
    background: var(--border-strong);
}

.trait-score {
    width: 50px;
    text-align: right;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

/* Viz Section */
.viz-section {
    margin-bottom: var(--space-lg);
}

.viz-section h2 {
    text-align: center;
    margin-bottom: var(--space-xs);
}

.viz-intro {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    font-size: 0.9375rem;
}

.viz-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.viz-card {
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: var(--space-md);
    background: white;
}

.viz-header {
    margin-bottom: var(--space-sm);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border);
}

.viz-header h3 {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--text);
    margin-bottom: 2px;
}

.viz-header .viz-desc {
    color: var(--text-muted);
    font-size: 0.8125rem;
}

.viz-card.full-width {
    /* Already full width in single column */
}

/* Results Actions */
.results-actions {
    text-align: center;
    padding: var(--space-lg) 0 var(--space-xl);
}

.btn-secondary {
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-strong);
    padding: 12px 24px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    border-color: var(--text-secondary);
    color: var(--text);
}

/* ============================================
   Loading State
   ============================================ */

#loading {
    max-width: var(--content-width);
    margin: var(--space-xl) auto;
}

#loading .summary-card {
    border: 1px solid var(--border);
    border-radius: 4px;
    background: white;
}

.loading {
    text-align: center;
    padding: var(--space-xl) var(--space-lg);
    color: var(--text-secondary);
}

.spinner {
    width: 32px;
    height: 32px;
    border: 2px solid var(--border);
    border-top-color: var(--text-secondary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-md);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 600px) {
    body {
        padding: var(--space-md) var(--space-sm);
    }

    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.25rem;
    }

    .hero {
        padding: var(--space-lg) 0 var(--space-md);
    }

    .tagline {
        font-size: 1rem;
    }

    .assessment-sentence {
        font-size: 1.125rem;
    }

    .assessment-sentence select {
        font-size: 1.125rem;
    }

    .grid-comparison {
        flex-direction: column;
        gap: var(--space-md);
    }

    .vs-divider {
        padding: var(--space-xs) 0;
    }

    .chat-bubble.bot {
        font-size: 1.125rem;
    }

    .trait-label {
        width: 90px;
        font-size: 0.9375rem;
    }

    .trait-score {
        width: 45px;
    }

    .results-summary {
        flex-direction: column;
    }

    .summary-icon {
        display: none;
    }
}