.chat-container {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

.chat-hero {
    text-align: center;
    padding: var(--space-lg) 0 var(--space-md);
}

.chat-hero h1 {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--gray-900);
    margin-bottom: 0.375rem;
}

.chat-hero p {
    font-size: var(--text-sm);
    color: var(--gray-500);
}

/* ── Category filters ───────────────────────── */
.category-filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.category-btn {
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.8125rem;
    font-weight: var(--font-medium);
    background: var(--white);
    color: var(--gray-600);
    border: 1px solid var(--gray-300);
    transition: var(--transition);
}

.category-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-bg);
}

.category-btn.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.category-btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ── Chat messages ──────────────────────────── */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-md) 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    scroll-behavior: smooth;
}

.message {
    display: flex;
    gap: 0.75rem;
    max-width: 70%;
    animation: msgFadeIn 0.3s ease;
}

@keyframes msgFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.message.bot {
    align-self: flex-start;
}

.message.user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: var(--text-sm);
}

.message.bot .message-avatar {
    background: var(--primary-bg);
    color: var(--primary);
}

.message.user .message-avatar {
    background: var(--gray-200);
    color: var(--gray-600);
}

/* Bot message: gray-100 background */
.message-bubble {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    line-height: 1.6;
    word-break: break-word;
}

.message.bot .message-bubble {
    background: var(--gray-100);
    color: var(--gray-900);
    border-top-left-radius: 2px;
}

/* User message: primary-blue background */
.message.user .message-bubble {
    background: var(--primary);
    color: var(--white);
    border-top-right-radius: 2px;
}

.message-category {
    display: inline-block;
    font-size: var(--text-xs);
    color: var(--primary);
    background: var(--primary-bg);
    padding: 0.1rem 0.5rem;
    border-radius: 10px;
    margin-bottom: 0.375rem;
}

/* ── Quick questions ────────────────────────── */
.quick-questions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 0;
}

.quick-btn {
    padding: 0.4rem 0.875rem;
    border-radius: 20px;
    font-size: 0.8125rem;
    background: var(--white);
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
    transition: var(--transition);
}

.quick-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-bg);
}

.quick-btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ── Chat input — 44px height ───────────────── */
.chat-input-wrap {
    display: flex;
    gap: var(--space-sm);
    padding: 0.75rem 0 0.5rem;
    border-top: 1px solid var(--gray-200);
}

.chat-input {
    flex: 1;
    height: 44px;
    padding: 0 1rem;
    border: 1px solid var(--gray-300);
    border-radius: 24px;
    font-size: var(--text-sm);
    transition: var(--transition);
    background: var(--white);
    color: var(--gray-900);
}

.chat-input:focus {
    border-color: var(--primary);
    box-shadow: var(--focus-ring);
}

.chat-input::placeholder {
    color: var(--gray-400);
}

.chat-send-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.chat-send-btn:hover:not(:disabled) {
    background: var(--primary-dark);
    transform: scale(1.05);
}

.chat-send-btn:active:not(:disabled) {
    transform: scale(0.95);
}

.chat-send-btn:disabled {
    background: var(--gray-300);
    cursor: not-allowed;
}

/* ── Typing indicator ───────────────────────── */
.typing-indicator {
    display: none;
    align-self: flex-start;
    padding: 0.75rem 1rem;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    margin-left: 2.75rem;
}

.typing-indicator.show {
    display: flex;
    gap: 4px;
    align-items: center;
}

.typing-indicator span {
    width: 6px;
    height: 6px;
    background: var(--gray-400);
    border-radius: 50%;
    animation: typingBounce 1.2s infinite;
}

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

@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-4px); }
}

/* ── Company Selection ──────────────────────── */
.company-selection {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.company-hero {
    text-align: center;
    padding: var(--space-xl) 0 var(--space-lg);
}

.company-hero-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-md);
    background: var(--primary-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.company-hero h1 {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--gray-900);
    margin-bottom: 0.375rem;
}

.company-hero p {
    font-size: var(--text-sm);
    color: var(--gray-500);
}

.company-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--space-md);
    width: 100%;
    max-width: 720px;
}

.company-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: 1.25rem 1.5rem;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.company-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.company-card:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.company-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--primary-bg);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.company-card-info h3 {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--gray-900);
    margin-bottom: 0.125rem;
}

.company-card-code {
    font-size: var(--text-xs);
    color: var(--gray-500);
    font-family: monospace;
}

.company-loading {
    text-align: center;
    padding: var(--space-xl) 0;
    color: var(--gray-500);
    font-size: var(--text-sm);
}

.company-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: companySpin 0.7s linear infinite;
    margin: 0 auto var(--space-md);
}

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

.company-error {
    text-align: center;
    padding: var(--space-xl) 0;
    color: var(--gray-500);
}

.company-error svg {
    margin-bottom: var(--space-sm);
    color: var(--gray-300);
}

.company-error p {
    font-size: var(--text-sm);
    margin-bottom: var(--space-md);
}

/* Company card — disabled / 준비중 */
.company-card-disabled {
    opacity: 0.55;
    cursor: default;
    position: relative;
}

.company-card-disabled:hover {
    border-color: var(--gray-200);
    box-shadow: var(--shadow-sm);
    transform: none;
}

.company-card-badge {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--white);
    background: var(--gray-400);
    padding: 0.125rem 0.5rem;
    border-radius: 10px;
}

/* Company label in header */
.company-label {
    font-size: var(--text-sm);
    color: var(--primary);
    font-weight: var(--font-medium);
    padding: 0.25rem 0.75rem;
    background: var(--primary-bg);
    border-radius: 10px;
}

/* ── Responsive ─────────────────────────────── */
@media (max-width: 767px) {
    .chat-container {
        padding: var(--space-md);
    }

    .chat-hero h1 {
        font-size: 1.25rem;
    }

    .message {
        max-width: 88%;
    }

    .quick-questions {
        gap: 0.375rem;
    }

    .quick-btn {
        font-size: 0.75rem;
        padding: 0.35rem 0.75rem;
    }

    .company-selection {
        padding: var(--space-lg) var(--space-md);
    }

    .company-grid {
        grid-template-columns: 1fr;
    }

    .company-card:hover {
        transform: none;
    }

    .company-hero h1 {
        font-size: 1.25rem;
    }
}

@media (min-width: 768px) {
    .chat-container {
        padding: 2.5rem;
    }
}

@media (min-width: 1024px) {
    .chat-container {
        padding: 2.5rem 3.75rem;
    }

    .chat-hero h1 {
        font-size: var(--text-2xl);
    }

    .company-hero h1 {
        font-size: var(--text-2xl);
    }
}