/* World Herb Library - GROK-Inspired Chat Interface */

.chat-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--color-bg-primary);
}

/* Header */
.chat-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-bg-primary);
    backdrop-filter: blur(8px);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
}

.logo {
    height: 40px;
    width: 40px;
    object-fit: contain;
}

.logo-text {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text-primary);
}

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

.icon-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--color-text-primary);
}

.icon-btn:hover {
    background: var(--color-bg-tertiary);
    transform: scale(1.05);
}

.icon-btn svg {
    width: 20px;
    height: 20px;
}

/* Main Chat Area */
.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

/* Welcome Screen */
.welcome-screen {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem 8rem 2rem;
    animation: fadeIn 0.6s ease;
    min-height: 100vh;
}

.welcome-content {
    text-align: center;
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.welcome-logo {
    height: 80px;
    width: 80px;
    object-fit: contain;
    margin-bottom: 1rem;
    margin-left: auto;
    margin-right: auto;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    display: block;
}

.welcome-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: 0.5rem;
    margin-left: auto;
    margin-right: auto;
    color: var(--color-text-primary);
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    text-align: center;
    white-space: nowrap;
}

.welcome-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.6s forwards;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
    max-width: 500px;
}

/* Search Input Container */
.search-input-container.centered {
    width: 100%;
    max-width: 700px;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.8s forwards;
    margin-left: auto;
    margin-right: auto;
    padding: 0 1rem;
    display: flex;
    justify-content: center;
}

.input-wrapper {
    display: flex;
    align-items: stretch;
    gap: 0.5rem;
    background: var(--color-bg-primary);
    border: 2px solid var(--color-border-primary);
    border-radius: 24px;
    padding: 6px 12px;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    width: 100%;
    height: 44px;
}

.input-wrapper:focus-within {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-xl);
}

.input-icon-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: none;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--color-text-tertiary);
    transition: all 0.2s;
    flex-shrink: 0;
    align-self: center;
}

.input-icon-btn:hover {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
}

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

.search-input {
    flex: 1 !important;
    border: none !important;
    background: none !important;
    font-size: 14px !important;
    color: var(--color-text-primary) !important;
    outline: none !important;
    padding: 0 0.5rem !important;
    font-family: inherit !important;
    line-height: 1.5 !important;
    height: auto !important;
    box-sizing: border-box !important;
    -webkit-appearance: none !important;
    -moz-appearance: none !important;
    appearance: none !important;
    align-self: center !important;
    margin: 0 !important;
}

.search-input::placeholder {
    color: var(--color-text-tertiary) !important;
    line-height: 1.5 !important;
}

/* Mode Selector */
.mode-selector {
    position: relative;
}

.mode-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0 0.75rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-primary);
    border-radius: 18px;
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    transition: all 0.2s;
    white-space: nowrap;
    height: 32px;
    flex-shrink: 0;
    align-self: center;
}

.mode-btn:hover {
    background: var(--color-bg-tertiary);
}

.mode-btn svg {
    width: 14px;
    height: 14px;
}

.mode-dropdown {
    position: absolute;
    bottom: calc(100% + 0.5rem);
    right: 0;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-primary);
    border-radius: 12px;
    box-shadow: var(--shadow-xl);
    min-width: 280px;
    display: none;
    z-index: 1000;
    overflow: hidden;
}

.mode-dropdown.active {
    display: block;
    animation: slideUp 0.2s ease;
}

.mode-option {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    cursor: pointer;
    transition: background 0.2s;
}

.mode-option:hover {
    background: var(--color-bg-hover);
}

.mode-option.active {
    background: var(--color-accent-light);
}

.mode-option svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.mode-name {
    font-weight: 600;
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
}

.mode-desc {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

/* Submit Button */
.submit-btn {
    width: 32px;
    height: 32px;
    min-width: 32px;
    flex-shrink: 0;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-text-inverse);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    align-self: center;
}

.submit-btn:hover:not(:disabled) {
    background: var(--color-primary-hover);
    transform: scale(1.05);
}

.submit-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

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

/* Conversation Area */
.conversation-area {
    flex: 1;
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
    padding: 2rem;
    animation: fadeIn 0.4s ease;
}

.messages-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Message Styles */
.message {
    animation: fadeInUp 0.4s ease;
}

.message-user {
    background: var(--color-bg-secondary);
    border-radius: 16px;
    padding: 1rem 1.5rem;
    max-width: 80%;
    align-self: flex-end;
    margin-left: auto;
}

.message-user .message-content {
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
}

.message-assistant {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.message-content {
    line-height: 1.7;
    color: var(--color-text-primary);
}

/* Markdown Formatting - Clean GitHub Style */
.message-content {
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-primary);
    font-weight: 400;
}

.message-content * {
    font-weight: inherit;
}

/* Headings - Clear hierarchy */
.message-content h1 {
    font-size: 2em;
    font-weight: 600;
    line-height: 1.25;
    margin-top: 24px;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--color-border-primary);
}

.message-content h1:first-child {
    margin-top: 0;
}

.message-content h2 {
    font-size: 1.5em;
    font-weight: 600;
    line-height: 1.25;
    margin-top: 24px;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--color-border-primary);
}

.message-content h3 {
    font-size: 1.25em;
    font-weight: 600;
    line-height: 1.25;
    margin-top: 24px;
    margin-bottom: 16px;
}

.message-content h4 {
    font-size: 1em;
    font-weight: 600;
    line-height: 1.25;
    margin-top: 24px;
    margin-bottom: 16px;
}

.message-content h5 {
    font-size: 0.875em;
    font-weight: 600;
    line-height: 1.25;
    margin-top: 24px;
    margin-bottom: 16px;
}

.message-content h6 {
    font-size: 0.85em;
    font-weight: 600;
    line-height: 1.25;
    margin-top: 24px;
    margin-bottom: 16px;
    color: var(--color-text-secondary);
}

/* Paragraphs */
.message-content p {
    margin-top: 0;
    margin-bottom: 16px;
    line-height: 1.6;
}

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

/* Lists */
.message-content ul,
.message-content ol {
    margin-top: 0;
    margin-bottom: 16px;
    padding-left: 2em;
}

.message-content ul {
    list-style-type: disc;
}

.message-content ol {
    list-style-type: decimal;
}

.message-content li {
    margin-bottom: 4px;
}

.message-content li > p {
    margin-bottom: 8px;
}

.message-content li + li {
    margin-top: 4px;
}

.message-content ul ul,
.message-content ul ol,
.message-content ol ul,
.message-content ol ol {
    margin-top: 4px;
    margin-bottom: 4px;
}

/* Bold and Italic */
.message-content strong {
    font-weight: 600;
}

.message-content em {
    font-style: italic;
}

/* Code */
.message-content code {
    padding: 2px 6px;
    font-size: 85%;
    background: var(--color-bg-secondary);
    border-radius: 3px;
    font-family: 'SFMono-Regular', 'Consolas', 'Liberation Mono', 'Menlo', monospace;
}

.message-content pre {
    padding: 16px;
    overflow: auto;
    font-size: 85%;
    line-height: 1.45;
    background: var(--color-bg-secondary);
    border-radius: 6px;
    margin-bottom: 16px;
}

.message-content pre code {
    display: inline;
    padding: 0;
    margin: 0;
    overflow: visible;
    line-height: inherit;
    background: transparent;
    border: 0;
}

/* Blockquotes */
.message-content blockquote {
    padding: 0 1em;
    color: var(--color-text-secondary);
    border-left: 4px solid var(--color-border-primary);
    margin: 0 0 16px 0;
}

.message-content blockquote > :first-child {
    margin-top: 0;
}

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

/* Links */
.message-content a {
    color: var(--color-accent);
    text-decoration: none;
}

.message-content a:hover {
    text-decoration: underline;
}

/* Tables */
.message-content table {
    border-collapse: collapse;
    border-spacing: 0;
    margin-bottom: 16px;
    width: 100%;
}

.message-content table th,
.message-content table td {
    padding: 6px 13px;
    border: 1px solid var(--color-border-primary);
}

.message-content table th {
    font-weight: 600;
    background: var(--color-bg-secondary);
}

.message-content table tr {
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-border-primary);
}

.message-content table tr:nth-child(2n) {
    background: var(--color-bg-secondary);
}

/* Horizontal Rule */
.message-content hr {
    height: 0.25em;
    padding: 0;
    margin: 24px 0;
    background: var(--color-border-primary);
    border: 0;
}

/* Images */
.message-content img {
    max-width: 100%;
    box-sizing: content-box;
}

/* Passage Block (for Exact Passage Mode) */
.passage-block {
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--color-border-primary);
}

.passage-block:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.passage-meta {
    color: var(--color-text-secondary);
    font-size: 13px;
    margin-bottom: 1rem;
    font-style: italic;
}

/* Citations - Professional Document Style */
.citations-container {
    margin-top: 2.5rem;
    padding: 2rem;
    background: var(--color-bg-secondary);
    border-radius: 12px;
    border-left: 5px solid var(--color-accent);
    box-shadow: var(--shadow-sm);
}

.citations-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--color-border-primary);
}

.citations-title svg {
    width: 18px;
    height: 18px;
    color: var(--color-accent);
}

.citation-item {
    padding: 1rem 1.25rem;
    margin-bottom: 0.875rem;
    background: var(--color-bg-primary);
    border-radius: 8px;
    transition: all 0.25s ease;
    cursor: pointer;
    border: 1px solid var(--color-border-primary);
    position: relative;
}

.citation-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--color-accent);
    border-radius: 8px 0 0 8px;
    opacity: 0;
    transition: opacity 0.25s ease;
}

.citation-item:hover {
    background: var(--color-bg-hover);
    transform: translateX(6px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

.citation-item:hover::before {
    opacity: 1;
}

.citation-item:last-child {
    margin-bottom: 0;
}

.citation-title {
    font-weight: 600;
    font-size: 15px;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.625rem;
    line-height: 1.5;
}

.citation-title svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    opacity: 0.7;
}

.citation-meta {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.5;
    font-style: italic;
}

/* Citation title wrapper for overflow handling */
.citation-title-wrapper {
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
    overflow: hidden;
}

.citation-title-wrapper svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    opacity: 0.7;
    margin-top: 2px;
}

.citation-title-text {
    font-weight: 600;
    font-size: 15px;
    color: var(--color-primary);
    line-height: 1.4;
    word-break: break-word;
    overflow-wrap: break-word;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Hidden citations for Show More */
.citation-hidden {
    display: none;
}

/* Show More button */
.show-more-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.875rem;
    margin-top: 0.875rem;
    background: var(--color-bg-primary);
    border: 1px dashed var(--color-border-primary);
    border-radius: 8px;
    color: var(--color-accent);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.show-more-btn:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-accent);
}

.show-more-btn svg {
    width: 16px;
    height: 16px;
}

/* Start Again Link */
.start-again-container {
    position: fixed;
    top: 5rem;
    left: 2rem;
    z-index: 100;
    animation: fadeIn 0.4s ease;
}

.start-again-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: none;
    border: none;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    opacity: 0.7;
    padding: 0.5rem;
}

.start-again-btn:hover {
    opacity: 1;
    color: var(--color-text-primary);
    transform: translateX(-2px);
}

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

/* Thinking Indicator */
.thinking-indicator {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1000;
}

.thinking-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 2rem;
    background: var(--color-bg-primary);
    border-radius: 16px;
    box-shadow: var(--shadow-xl);
}

.thinking-animation {
    display: flex;
    gap: 0.5rem;
}

.thinking-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-accent);
    animation: thinkingDot 1.4s infinite ease-in-out;
}

.thinking-dot:nth-child(1) { animation-delay: -0.32s; }
.thinking-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes thinkingDot {
    0%, 80%, 100% {
        transform: scale(0.6);
        opacity: 0.3;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

.thinking-text {
    color: var(--color-text-secondary);
    font-style: italic;
    font-size: var(--font-size-sm);
    text-align: center;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

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

/* Responsive Design */
@media (max-width: 1024px) {
    .conversation-area {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .header-content {
        padding: 1rem;
    }

    .welcome-screen {
        padding: 2rem 1rem;
    }

    .welcome-title {
        font-size: var(--font-size-3xl);
    }

    .welcome-subtitle {
        font-size: var(--font-size-base);
        max-width: 100%;
    }

    .welcome-logo {
        height: 60px;
    }

    .search-input-container.centered {
        max-width: 100%;
        padding: 0;
    }

    .conversation-area {
        padding: 1rem;
    }

    .message-user {
        max-width: 90%;
    }

    .logo-text {
        display: none;
    }

    .start-again-container {
        top: 1rem;
        left: 1rem;
    }

    .start-again-btn {
        font-size: var(--font-size-xs);
    }

    .thinking-content {
        padding: 1.5rem;
    }

    .mode-dropdown {
        right: auto;
        left: 0;
    }

    /* Markdown responsive adjustments */
    .message-content {
        font-size: 15px;
    }

    .citations-container {
        padding: 1.5rem;
    }

    .citation-item {
        padding: 0.875rem 1rem;
    }
}

@media (max-width: 480px) {
    .welcome-title {
        font-size: var(--font-size-2xl);
    }

    .input-icon-btn {
        display: none;
    }

    .submit-btn {
        width: 36px;
        height: 36px;
        min-width: 36px;
    }

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