/* ===========================
   Axiom - Custom Styles
   Complementary to Tailwind CSS
   =========================== */

/* ===========================
   Theme Variables
   =========================== */
:root {
    /* Light Mode (Default) */
    --axiom-bg: #f0f0f0;
    --axiom-card: #ffffff;
    --axiom-border: #d4d4d4;
    --axiom-border-light: #e5e5e5;
    --axiom-text: #1a1a1a;
    --axiom-text-secondary: #666666;
    --axiom-text-muted: #999999;
    --axiom-error: #dc2626;
    --axiom-success: #16a34a;

    /* Scrollbar */
    --scrollbar-thumb: #d4d4d4;
    --scrollbar-thumb-hover: #999999;

    /* Code blocks */
    --code-bg: #f3f4f6;
    --pre-bg: #f3f4f6;
    --pre-text: #1a1a1a;

    /* Skeleton loading */
    --skeleton-base: #f0f0f0;
    --skeleton-highlight: #e5e5e5;

    /* Brief cards */
    --brief-card-bg: #ffffff;

    /* Overlay */
    --overlay-bg: rgba(0, 0, 0, 0.3);
}

/* Dark Mode */
[data-theme="dark"] {
    --axiom-bg: #222831;
    --axiom-card: #393E46;
    --axiom-border: #948979;
    --axiom-border-light: #4a4f57;
    --axiom-text: #DFD0B8;
    --axiom-text-secondary: #c4b8a3;
    --axiom-text-muted: #948979;
    --axiom-error: #f87171;
    --axiom-success: #4ade80;

    /* Scrollbar */
    --scrollbar-thumb: #948979;
    --scrollbar-thumb-hover: #DFD0B8;

    /* Code blocks */
    --code-bg: #2d333b;
    --pre-bg: #1a1d23;
    --pre-text: #DFD0B8;

    /* Skeleton loading */
    --skeleton-base: #393E46;
    --skeleton-highlight: #4a4f57;

    /* Brief cards */
    --brief-card-bg: #393E46;

    /* Overlay */
    --overlay-bg: rgba(0, 0, 0, 0.5);
}

/* Apply theme variables to elements */
body {
    background-color: var(--axiom-bg);
    color: var(--axiom-text);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ===========================
   Theme Toggle Component
   =========================== */
.theme-toggle {
    display: flex;
    align-items: center;
    background-color: var(--axiom-card);
    border: 1px solid var(--axiom-border);
    border-radius: 9999px;
    padding: 0.25rem;
    gap: 0.125rem;
}

.theme-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 9999px;
    border: none;
    background: transparent;
    color: var(--axiom-text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
}

.theme-toggle-btn:hover {
    color: var(--axiom-text);
    background-color: var(--axiom-bg);
}

.theme-toggle-btn.active {
    background-color: var(--axiom-bg);
    color: var(--axiom-text);
}

.theme-toggle-btn svg {
    width: 1rem;
    height: 1rem;
}

/* Animations */
@keyframes fade-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes typing-bounce {

    0%,
    80%,
    100% {
        transform: scale(0.8);
        opacity: 0.5;
    }

    40% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes slide-in-left {
    from {
        transform: translateX(-100%);
    }

    to {
        transform: translateX(0);
    }
}

.animate-fade-in {
    animation: fade-in 0.5s ease;
}

.animate-slide-in-left {
    animation: slide-in-left 0.2s ease-out;
}

/* Chat History Item Styles */
.chat-history-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.25rem;
    border-bottom: 1px solid var(--axiom-border-light);
    cursor: pointer;
    transition: background-color 0.15s;
}

.chat-history-item:hover {
    background-color: var(--axiom-bg);
}

.chat-history-item.active {
    background-color: var(--axiom-bg);
}

.chat-history-item .chat-icon {
    flex-shrink: 0;
    width: 2rem;
    height: 2rem;
    border-radius: 0.5rem;
    background: linear-gradient(135deg, var(--axiom-text-secondary), var(--axiom-text-muted));
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-history-item .chat-info {
    flex: 1;
    min-width: 0;
}

.chat-history-item .chat-title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--axiom-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-history-item .chat-date {
    font-size: 0.75rem;
    color: var(--axiom-text-muted);
}

.chat-history-item .delete-chat-btn {
    flex-shrink: 0;
    padding: 0.25rem;
    border-radius: 0.25rem;
    opacity: 0;
    transition: opacity 0.15s, background-color 0.15s;
}

.chat-history-item:hover .delete-chat-btn {
    opacity: 1;
}

.chat-history-item .delete-chat-btn:hover {
    background-color: #fee2e2;
    color: #dc2626;
}

/* Model Selector Active State */
#modelSelector.active #dropdownArrow {
    transform: rotate(180deg);
}

#modelSelector.active #modelDropdown {
    opacity: 1;
    visibility: visible;
}

/* Model Option Selected State */
.model-option.selected {
    background-color: var(--axiom-bg);
    font-weight: 500;
}

/* Chat Area Active State */
#chatArea.active {
    display: flex;
}

#welcomeSection.hidden {
    display: none;
}

/* Message Styles */
.message {
    margin-bottom: 1.5rem;
    animation: message-in 0.3s ease;
}

.message-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.message-role {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--axiom-text);
}

.message-time {
    font-size: 0.75rem;
    color: var(--axiom-text-muted);
}

.message-content {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--axiom-text);
}

.message.user .message-content {
    color: var(--axiom-text-secondary);
}

.message.assistant .message-content {
    padding: 1rem;
    background-color: var(--axiom-card);
    border-radius: 0.75rem;
    border: 1px solid var(--axiom-border-light);
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 1rem;
    background-color: var(--axiom-card);
    border-radius: 0.75rem;
    border: 1px solid var(--axiom-border-light);
    width: fit-content;
}

.typing-dot {
    width: 8px;
    height: 8px;
    background-color: var(--axiom-text-muted);
    border-radius: 50%;
    animation: typing-bounce 1.4s infinite ease-in-out;
}

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

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

.typing-dot:nth-child(3) {
    animation-delay: 0s;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background-color: var(--scrollbar-thumb);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--scrollbar-thumb-hover);
}

/* Responsive Adjustments */
@media (max-width: 640px) {

    /* Stack buttons in column on narrow screens */
    #welcomeSection .flex.gap-2 {
        flex-direction: column;
        align-items: center;
    }

    /* Tighter padding only when in column layout */
    #welcomeSection button {
        width: auto;
        padding-left: 0.75rem;
        padding-right: 0.75rem;
        padding-top: 0.375rem;
        padding-bottom: 0.375rem;
    }
}

/* Shimmer Animation for Search Status */
@keyframes shimmer {
    0% {
        background-position: 200% center;
    }

    100% {
        background-position: -200% center;
    }
}

.animate-shimmer {
    background-size: 200% auto;
    animation: shimmer 3s linear infinite;
}

/* Diagonal Strike-through for Disabled Icons */
.line-through-icon {
    position: relative;
}

.line-through-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60%;
    height: 1.5px;
    background-color: var(--axiom-text-muted);
    transform: translate(-50%, -50%) rotate(45deg);
    pointer-events: none;
}

/* Gradient Shimmer for Text */
@keyframes text-shimmer {
    0% {
        background-position: 200% center;
    }

    100% {
        background-position: -200% center;
    }
}

.animate-text-shimmer {
    background: linear-gradient(to right,
            #4b5563 20%,
            #9ca3af 40%,
            #4b5563 60%,
            #4b5563 80%);
    background-size: 200% auto;
    color: #4b5563;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: text-shimmer 2s linear infinite;
}

/* Thinking Process - Unified Shimmer for Icon + Text when Closed & Active */
/* Text shimmer - original gray colors */
details.thinking-active:not([open]) .thinking-summary span {
    background: linear-gradient(to right,
            #4b5563 0%,
            #4b5563 20%,
            #9ca3af 40%,
            #4b5563 60%,
            #4b5563 100%);
    background-size: 200% auto;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: text-shimmer 2s linear infinite;
}

/* Icon color animation synced with text gradient - original gray colors */
@keyframes thinking-icon-shimmer {
    0% {
        stroke: #4b5563;
    }

    20% {
        stroke: #4b5563;
    }

    40% {
        stroke: #9ca3af;
    }

    60% {
        stroke: #4b5563;
    }

    100% {
        stroke: #4b5563;
    }
}

details.thinking-active:not([open]) .thinking-icon {
    animation: thinking-icon-shimmer 2s linear infinite;
}

/* Dark mode - lighter gray tones for visibility */
[data-theme="dark"] details.thinking-active:not([open]) .thinking-summary span {
    background: linear-gradient(to right,
            #6b7280 0%,
            #6b7280 20%,
            #d1d5db 40%,
            #6b7280 60%,
            #6b7280 100%);
    background-size: 200% auto;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: text-shimmer 2s linear infinite;
}

@keyframes thinking-icon-shimmer-dark {
    0% {
        stroke: #6b7280;
    }

    20% {
        stroke: #6b7280;
    }

    40% {
        stroke: #d1d5db;
    }

    60% {
        stroke: #6b7280;
    }

    100% {
        stroke: #6b7280;
    }
}

[data-theme="dark"] details.thinking-active:not([open]) .thinking-icon {
    animation: thinking-icon-shimmer-dark 2s linear infinite;
}

/* MarkDown & Empty Bubble Logic */
.message-content:empty {
    display: none !important;
    padding: 0 !important;
    border: none !important;
}

/* Markdown Styles inside message-content */
.message-content p {
    margin-bottom: 0.75rem;
}

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

.message-content ul,
.message-content ol {
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
}

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

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

.message-content li {
    margin-bottom: 0.25rem;
}

.message-content code {
    background-color: var(--code-bg);
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-family: monospace;
    font-size: 0.875rem;
}

.message-content pre {
    background-color: var(--pre-bg);
    color: var(--pre-text);
    padding: 1rem;
    border-radius: 0.5rem;
    overflow-x: auto;
    margin-bottom: 0.75rem;
}

.message-content pre code {
    background-color: transparent;
    padding: 0;
}

.message-content strong {
    font-weight: 600;
}

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

.message-content blockquote {
    border-left: 4px solid var(--axiom-border-light);
    padding-left: 1rem;
    font-style: italic;
    color: var(--axiom-text-secondary);
    margin-bottom: 0.75rem;
}

.message-content a {
    color: #2563eb;
    text-decoration: underline;
}

#messagesContainer .message {
    max-width: 48rem;
    margin-left: auto;
    margin-right: auto;
}

#typingIndicator {
    max-width: 48rem;
    margin-left: auto;
    margin-right: auto;
}

#messagesContainer .message-header {
    max-width: 48rem;
    margin-left: auto;
    margin-right: auto;
}

.message {
    max-width: 48rem;
    margin-left: auto;
    margin-right: auto;
}

/* ===========================
   Centered Layout Animations
   (Motion One / Framer Motion style)
   =========================== */

/* Animation optimization hints */
#centeredContainer {
    will-change: opacity, transform;
}

#bottomInputArea {
    will-change: opacity, transform;
}

#welcomeSection {
    will-change: opacity, transform;
}

#centeredInputBox {
    will-change: opacity, transform;
}

/* Ensure smooth flex transitions */
#mainContentWrapper {
    position: relative;
}

/* Message container in chat mode */
#chatArea {
    opacity: 1;
}

/* Centered container - input is the TRUE center */
#centeredContainer {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* Welcome section should be above the input without pushing it down */
#centeredContainer #welcomeSection {
    margin-bottom: 2rem;
}

/* The input box inner container */
#centeredInputBox {
    z-index: 10;
}

/* Add subtle shadow to centered input for emphasis */
#centeredContainer #centeredInputBox>div {
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

/* ===========================
   Axiom Brief Cards
   =========================== */

/* Large Brief Card */
.brief-card {
    background: var(--brief-card-bg);
    border: 1px solid var(--axiom-border-light);
    border-radius: 1rem;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s ease, background-color 0.3s ease;
}

.brief-card:hover {
    transform: translateY(-2px);
    border-color: var(--axiom-text);
}

.brief-card-image {
    width: 100%;
    height: 160px;
    object-fit: cover;
    background-color: var(--axiom-bg);
}

.brief-card-content {
    padding: 1rem;
}

.brief-card-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--axiom-text);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.brief-card-description {
    font-size: 0.875rem;
    color: var(--axiom-text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.brief-card-tag {
    display: inline-block;
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--axiom-text-muted);
    margin-bottom: 0.5rem;
}

/* Small Brief Card (Quick Tips) */
.brief-card-small {
    background: var(--brief-card-bg);
    border: 1px solid var(--axiom-border-light);
    border-radius: 0.75rem;
    padding: 1rem;
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s ease, background-color 0.3s ease;
}

.brief-card-small:hover {
    transform: translateY(-1px);
    border-color: var(--axiom-text);
}

.brief-card-small .brief-card-title {
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.brief-card-small .brief-card-description {
    font-size: 0.8125rem;
    -webkit-line-clamp: 2;
    line-clamp: 2;
}

/* Skeleton Loading State */
.brief-skeleton {
    background: linear-gradient(90deg, var(--skeleton-base) 25%, var(--skeleton-highlight) 50%, var(--skeleton-base) 75%);
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s infinite;
}

@keyframes skeleton-shimmer {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

.brief-skeleton-image {
    width: 100%;
    height: 160px;
}

.brief-skeleton-title {
    height: 1rem;
    width: 80%;
    margin-bottom: 0.5rem;
    border-radius: 0.25rem;
}

.brief-skeleton-desc {
    height: 0.875rem;
    width: 100%;
    border-radius: 0.25rem;
}

/* Brief Detail Content Styles */
#briefDetailTitle {
    text-align: left;
}

#briefDetailContent {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--axiom-text);
    text-align: left;
    background: transparent;
}

#briefDetailContent p {
    margin-bottom: 1rem;
}

#briefDetailContent ul,
#briefDetailContent ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

#briefDetailContent li {
    margin-bottom: 0.5rem;
}

#briefDetailContent h2 {
    font-size: 1.25rem;
    font-weight: 500;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

#briefDetailContent h3 {
    font-size: 1.125rem;
    font-weight: 500;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

#briefDetailImages img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 0.5rem;
}

/* Typing Indicator (Class-based for reuse) */
.typing-indicator {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem;
    background: transparent;
    /* Explicitly transparent */
}

.typing-dot {
    width: 0.5rem;
    height: 0.5rem;
    background-color: #9ca3af;
    /* gray-400 */
    border-radius: 50%;
    animation: typing-bounce 1.4s infinite ease-in-out both;
}

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

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

.typing-dot:nth-child(3) {
    animation-delay: 0s;
}

@keyframes typing-bounce {

    0%,
    80%,
    100% {
        transform: scale(0);
    }

    40% {
        transform: scale(1);
    }
}