/* ============================================
   HOT SEAT - Interrogation Room Aesthetic
   High contrast, intense, electric heat
   ============================================ */

:root {
    /* Core: Deep black with electric orange heat */
    --black: #000000;
    --black-soft: #0a0a0a;
    --black-surface: #111111;
    --black-elevated: #1a1a1a;
    --black-border: #222222;

    --white: #ffffff;
    --white-soft: #f0f0f0;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;

    /* THE hot color - electric orange/red */
    --hot: #ff4d00;
    --hot-light: #ff6b2b;
    --hot-dark: #cc3d00;
    --hot-glow: rgba(255, 77, 0, 0.4);
    --hot-subtle: rgba(255, 77, 0, 0.1);

    /* Advisor colors */
    --advisor-vc: #ff4d4d;
    --advisor-adopter: #4dafff;
    --advisor-budget: #4dff88;
    --advisor-dynamic: #b84dff;
    --advisor-founder: var(--hot);

    /* Typography */
    --font-display: 'Bebas Neue', Impact, sans-serif;
    --font-body: 'IBM Plex Sans', -apple-system, sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;

    /* Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Transitions */
    --transition-fast: 100ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.5;
    color: var(--white);
    background: var(--black);
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
}

input, textarea, select {
    font-family: inherit;
}

/* ============================================
   BACKGROUND EFFECTS
   ============================================ */
.bg-noise {
    position: fixed;
    inset: 0;
    pointer-events: none;
    opacity: 0.035;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    z-index: 0;
}

.bg-vignette {
    position: fixed;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(ellipse at center, transparent 0%, var(--black) 100%);
    z-index: 0;
}

.heat-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    pointer-events: none;
    background: radial-gradient(circle, var(--hot-glow) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0;
    transition: opacity 0.5s ease;
    z-index: 0;
    transform: translate(-50%, -50%);
}

.heat-glow.active {
    opacity: 0.6;
    animation: heat-pulse 2s ease-in-out infinite;
}

@keyframes heat-pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.4; }
    50% { transform: translate(-50%, -50%) scale(1.1); opacity: 0.6; }
}

/* ============================================
   LAYOUT
   ============================================ */
.app {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main {
    flex: 1;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ============================================
   HEADER
   ============================================ */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) var(--space-6);
    border-bottom: 1px solid var(--black-border);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.logo-mark {
    font-size: 1.5rem;
    animation: flame-flicker 0.5s ease-in-out infinite alternate;
}

@keyframes flame-flicker {
    from { transform: scale(1) rotate(-2deg); }
    to { transform: scale(1.05) rotate(2deg); }
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.75rem;
    letter-spacing: 0.05em;
    color: var(--white);
}

.header-nav {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.875rem;
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--white);
}

.settings-trigger {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--black-border);
    border-radius: var(--radius-md);
    color: var(--gray-400);
    transition: all var(--transition-fast);
}

.settings-trigger:hover {
    color: var(--hot);
    border-color: var(--hot);
    background: var(--hot-subtle);
}

/* ============================================
   SETTINGS PANEL
   ============================================ */
.settings-panel {
    position: fixed;
    inset: 0;
    z-index: 100;
    visibility: hidden;
    opacity: 0;
    transition: visibility 0s 0.3s, opacity 0.3s ease;
}

.settings-panel.open {
    visibility: visible;
    opacity: 1;
    transition: visibility 0s, opacity 0.3s ease;
}

.settings-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
}

.settings-drawer {
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    max-width: 400px;
    height: 100%;
    background: var(--black-surface);
    border-left: 1px solid var(--black-border);
    transform: translateX(100%);
    transition: transform 0.3s var(--transition-slow);
}

.settings-panel.open .settings-drawer {
    transform: translateX(0);
}

.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-6);
    border-bottom: 1px solid var(--black-border);
}

.settings-header h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    letter-spacing: 0.05em;
}

.settings-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--gray-400);
    font-size: 1.5rem;
    transition: color var(--transition-fast);
}

.settings-close:hover {
    color: var(--white);
}

.settings-body {
    padding: var(--space-6);
}

.settings-section {
    margin-bottom: var(--space-8);
}

.section-label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-500);
    margin-bottom: var(--space-4);
}

.field {
    margin-bottom: var(--space-5);
}

.field label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--white);
    margin-bottom: var(--space-2);
}

.input-with-action {
    position: relative;
    display: flex;
}

.field input,
.field select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: var(--black);
    border: 1px solid var(--black-border);
    border-radius: var(--radius-md);
    color: var(--white);
    font-size: 0.875rem;
    transition: border-color var(--transition-fast);
}

.field input:focus,
.field select:focus {
    outline: none;
    border-color: var(--hot);
}

.field input::placeholder {
    color: var(--gray-600);
}

.input-action {
    position: absolute;
    right: var(--space-2);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--gray-500);
    padding: var(--space-2);
    transition: color var(--transition-fast);
}

.input-action:hover {
    color: var(--white);
}

.field-hint {
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: var(--space-2);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    transition: all var(--transition-base);
}

.btn-hot {
    background: var(--hot);
    color: var(--black);
    font-weight: 600;
}

.btn-hot:hover {
    background: var(--hot-light);
    box-shadow: 0 0 30px var(--hot-glow);
}

.btn-hot .btn-icon {
    transition: transform var(--transition-fast);
}

.btn-hot:hover .btn-icon {
    transform: translateX(4px);
}

.btn-primary {
    background: var(--white);
    color: var(--black);
}

.btn-primary:hover {
    background: var(--white-soft);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--black-border);
    color: var(--gray-400);
}

.btn-outline:hover {
    border-color: var(--gray-500);
    color: var(--white);
}

.btn-ghost {
    background: transparent;
    color: var(--gray-400);
}

.btn-ghost:hover {
    color: var(--white);
}

.btn-full {
    width: 100%;
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: 0.8125rem;
}

/* ============================================
   HERO / INPUT SECTION
   ============================================ */
.hero {
    padding: var(--space-16) 0;
    text-align: center;
}

.hero-content {
    margin-bottom: var(--space-10);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    line-height: 0.95;
    letter-spacing: 0.02em;
    margin-bottom: var(--space-6);
}

.hero-title .highlight {
    color: var(--hot);
    text-shadow: 0 0 60px var(--hot-glow);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--gray-400);
    max-width: 500px;
    margin: 0 auto;
}

.input-card {
    background: var(--black-surface);
    border: 1px solid var(--black-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-align: left;
}

.idea-textarea {
    width: 100%;
    padding: var(--space-6);
    background: transparent;
    border: none;
    color: var(--white);
    font-size: 1rem;
    line-height: 1.6;
    resize: vertical;
    min-height: 140px;
}

.idea-textarea::placeholder {
    color: var(--gray-600);
}

.idea-textarea:focus {
    outline: none;
}

.input-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) var(--space-6);
    background: var(--black-elevated);
    border-top: 1px solid var(--black-border);
    gap: var(--space-4);
    flex-wrap: wrap;
}

.mode-selector {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.mode-label {
    font-size: 0.75rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.mode-buttons {
    display: flex;
    gap: var(--space-1);
}

.mode-btn {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--gray-500);
    font-size: 0.8125rem;
    transition: all var(--transition-fast);
}

.mode-btn:hover {
    color: var(--white);
}

.mode-btn.active {
    background: var(--hot-subtle);
    border-color: var(--hot-dark);
    color: var(--hot);
}

.mode-icon {
    font-size: 0.875rem;
}

.hero-hint {
    margin-top: var(--space-4);
    font-size: 0.8125rem;
    color: var(--gray-600);
}

.hero-hint kbd {
    display: inline-block;
    padding: 2px 6px;
    background: var(--black-elevated);
    border: 1px solid var(--black-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.75rem;
}

/* ============================================
   SESSION SECTION
   ============================================ */
.session {
    padding-bottom: var(--space-16);
    animation: fade-in 0.4s ease;
}

@keyframes fade-in {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Advisors Bar */
.advisors-bar {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) 0;
    margin-bottom: var(--space-6);
    border-bottom: 1px solid var(--black-border);
    overflow-x: auto;
}

.advisors-label {
    font-family: var(--font-display);
    font-size: 0.875rem;
    letter-spacing: 0.1em;
    color: var(--gray-500);
    white-space: nowrap;
}

.advisors-list {
    display: flex;
    gap: var(--space-2);
}

.advisor-chip {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--black-surface);
    border: 1px solid var(--black-border);
    border-radius: 100px;
    font-size: 0.8125rem;
    white-space: nowrap;
    transition: all var(--transition-fast);
}

.advisor-chip.speaking {
    border-color: var(--advisor-color, var(--hot));
    box-shadow: 0 0 20px rgba(var(--advisor-rgb, 255, 77, 0), 0.3);
}

.advisor-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--advisor-color, var(--gray-500));
}

.advisor-chip.speaking .advisor-dot {
    animation: dot-pulse 1s ease-in-out infinite;
}

@keyframes dot-pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.3); opacity: 0.7; }
}

/* Discussion */
.discussion {
    background: var(--black-surface);
    border: 1px solid var(--black-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.discussion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--black-border);
}

.round-badge {
    font-family: var(--font-display);
    font-size: 0.875rem;
    letter-spacing: 0.1em;
    color: var(--hot);
}

.end-session-btn {
    font-size: 0.8125rem;
    color: var(--gray-500);
    background: none;
    border: none;
    transition: color var(--transition-fast);
}

.end-session-btn:hover {
    color: var(--advisor-vc);
}

.messages {
    padding: var(--space-5);
    max-height: 500px;
    overflow-y: auto;
}

/* Message */
.message {
    display: flex;
    gap: var(--space-3);
    margin-bottom: var(--space-5);
    animation: message-in 0.3s ease;
}

@keyframes message-in {
    from { opacity: 0; transform: translateX(-10px); }
    to { opacity: 1; transform: translateX(0); }
}

.message:last-child {
    margin-bottom: 0;
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--black);
    border: 2px solid var(--advisor-color, var(--gray-600));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 0.875rem;
    flex-shrink: 0;
}

.message-body {
    flex: 1;
    min-width: 0;
}

.message-header {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
    margin-bottom: var(--space-1);
}

.message-name {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--advisor-color, var(--white));
}

.message-meta {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--gray-600);
}

/* Thinking Section - THE MAIN EVENT */
.message-thinking {
    background: linear-gradient(135deg, rgba(255, 77, 0, 0.08) 0%, rgba(255, 150, 50, 0.05) 100%);
    border: 1px solid rgba(255, 77, 0, 0.2);
    border-left: 3px solid var(--hot);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    margin-bottom: var(--space-3);
}

.thinking-label,
.response-label {
    font-family: var(--font-display);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-2);
    opacity: 0.7;
}

.thinking-label {
    color: var(--hot);
}

.response-label {
    color: var(--gray-500);
}

.thinking-content {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--gray-300);
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-word;
}

/* Streaming cursor effect */
.message.streaming .thinking-content::after,
.message.streaming .message-text::after {
    content: '▊';
    animation: blink 0.8s infinite;
    color: var(--hot);
    margin-left: 2px;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* Multiple advisors streaming */
.message.streaming {
    border-left: 2px solid var(--hot);
}

.message.streaming .message-avatar {
    animation: pulse-avatar 1.5s infinite;
}

@keyframes pulse-avatar {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255, 77, 0, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(255, 77, 0, 0); }
}

.message-response {
    padding-top: var(--space-2);
}

.message-text {
    font-size: 0.9375rem;
    color: var(--gray-400);
    line-height: 1.7;
}

.message-text ul {
    margin: var(--space-2) 0;
    padding-left: var(--space-5);
}

.message-text li {
    margin-bottom: var(--space-1);
}

.message-text strong {
    color: var(--white-soft);
    font-weight: 600;
}

.message-text h3, .message-text h4 {
    color: var(--white);
    margin: var(--space-3) 0 var(--space-2);
    font-family: var(--font-display);
}

.message-text p {
    margin-bottom: var(--space-2);
}

/* System Thinking (Moderator, etc.) */
.system-thinking {
    background: rgba(100, 100, 255, 0.05);
    border: 1px solid rgba(100, 100, 255, 0.15);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    margin: var(--space-4) var(--space-5);
}

.system-thinking-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

.system-icon {
    font-size: 1rem;
}

.system-source {
    font-family: var(--font-display);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: rgba(150, 150, 255, 0.8);
}

.system-thinking .thinking-content {
    font-size: 0.8rem;
    color: var(--gray-400);
    margin-bottom: var(--space-3);
}

.system-conclusion {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: rgba(150, 200, 255, 0.9);
    padding-top: var(--space-2);
    border-top: 1px solid rgba(100, 100, 255, 0.1);
}

/* Streaming system thinking */
.system-thinking.streaming {
    border-left: 3px solid rgba(150, 150, 255, 0.6);
}

.system-thinking.streaming .thinking-content::after {
    content: '▊';
    animation: blink 0.8s infinite;
    color: rgba(150, 150, 255, 0.8);
    margin-left: 2px;
}

.system-thinking.streaming .system-icon {
    animation: pulse-brain 1.5s infinite;
}

@keyframes pulse-brain {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Founder message */
.message.founder .message-avatar {
    background: var(--hot-subtle);
    border-color: var(--hot);
    color: var(--hot);
}

.message.founder .message-name {
    color: var(--hot);
}

.message.founder .message-text {
    color: var(--white-soft);
}

/* Round Divider */
.round-divider {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin: var(--space-6) 0;
    padding: 0 var(--space-5);
}

.round-divider::before,
.round-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--black-border);
}

.round-divider span {
    font-family: var(--font-display);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: var(--gray-600);
}

/* Founder Response */
.founder-response {
    padding: var(--space-5);
    border-top: 1px solid var(--black-border);
    background: linear-gradient(to bottom, var(--hot-subtle), transparent);
}

.response-prompt {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--hot);
    margin-bottom: var(--space-4);
    padding-left: var(--space-4);
    border-left: 2px solid var(--hot);
}

.response-textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: var(--black);
    border: 1px solid var(--black-border);
    border-radius: var(--radius-md);
    color: var(--white);
    font-size: 0.9375rem;
    resize: vertical;
    min-height: 60px;
    margin-bottom: var(--space-3);
}

.response-textarea:focus {
    outline: none;
    border-color: var(--hot);
}

.response-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
}

/* Summary */
.summary {
    animation: fade-in 0.4s ease;
}

.summary-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.summary-header h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
}

.summary-header p {
    color: var(--gray-400);
}

.summary-content {
    background: var(--black-surface);
    border: 1px solid var(--black-border);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    margin-bottom: var(--space-6);
}

.summary-content h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    letter-spacing: 0.05em;
    color: var(--hot);
    margin-bottom: var(--space-4);
}

.summary-content p {
    color: var(--gray-400);
    margin-bottom: var(--space-4);
    line-height: 1.7;
}

.summary-content ul {
    padding-left: var(--space-6);
    margin-bottom: var(--space-4);
}

.summary-content li {
    color: var(--gray-400);
    margin-bottom: var(--space-2);
}

/* Summary Thinking */
.summary-thinking {
    background: linear-gradient(135deg, rgba(255, 77, 0, 0.1) 0%, rgba(255, 150, 50, 0.05) 100%);
    border: 1px solid rgba(255, 77, 0, 0.25);
    border-left: 4px solid var(--hot);
    border-radius: var(--radius-md);
    padding: var(--space-5);
    margin-bottom: var(--space-6);
}

.summary-thinking .thinking-label {
    color: var(--hot);
    margin-bottom: var(--space-3);
}

.summary-thinking .thinking-content {
    max-height: 300px;
    overflow-y: auto;
}

.summary-verdict {
    border-top: 1px solid var(--black-border);
    padding-top: var(--space-5);
}

.summary-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-3);
    flex-wrap: wrap;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    text-align: center;
    padding: var(--space-8) var(--space-6);
    border-top: 1px solid var(--black-border);
}

.footer p {
    font-size: 0.8125rem;
    color: var(--gray-600);
    margin-bottom: var(--space-2);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
}

.footer-links a {
    color: var(--gray-500);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--hot);
}

.footer-links .separator {
    color: var(--gray-600);
}

.footer-credit {
    margin-top: var(--space-3);
    font-size: 0.8rem;
    color: var(--gray-500);
}

.footer-credit a {
    color: var(--hot);
    text-decoration: none;
}

.footer-credit a:hover {
    text-decoration: underline;
}

/* ============================================
   LOADING OVERLAY
   ============================================ */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0s 0.3s;
}

.loading-overlay.active {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease;
}

.loading-content {
    text-align: center;
}

.loading-flame {
    font-size: 3rem;
    animation: flame-dance 0.5s ease-in-out infinite alternate;
}

@keyframes flame-dance {
    from { transform: scale(1) rotate(-5deg); }
    to { transform: scale(1.1) rotate(5deg); }
}

.loading-text {
    margin-top: var(--space-4);
    font-family: var(--font-display);
    font-size: 1.25rem;
    letter-spacing: 0.05em;
    color: var(--gray-400);
}

/* ============================================
   TOAST
   ============================================ */
.toast-container {
    position: fixed;
    bottom: var(--space-6);
    left: 50%;
    transform: translateX(-50%);
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.toast {
    padding: var(--space-3) var(--space-5);
    background: var(--white);
    color: var(--black);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    animation: toast-in 0.3s ease;
}

.toast.error {
    background: var(--advisor-vc);
    color: var(--white);
}

@keyframes toast-in {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes toast-out {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(-10px); }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 640px) {
    .hero {
        padding: var(--space-10) 0;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .input-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .mode-selector {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
    }

    .mode-buttons {
        width: 100%;
    }

    .mode-btn {
        flex: 1;
        justify-content: center;
    }

    .btn-hot {
        width: 100%;
    }

    .advisors-bar {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .summary-actions .btn {
        width: 100%;
    }
}