:root {
    --bg-dark: #0a0a0a;
    --bg-darker: #050505;
    --bg-card: #1a1a1a;
    --storm-blue: #1475c9;
    --text-primary: #e0e0e0;
    --text-secondary: #999;
    --border-color: #333;
    --copper: #b87333;
    --electric: #00d4ff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

.container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Header */
header {
    background: var(--bg-darker);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--storm-blue);
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
}

.rainbow-text {
    background: linear-gradient(90deg, #ff0080, #ff8c00, #40e0d0, #9c27b0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.storm-text {
    color: var(--storm-blue);
}

.separator {
    color: var(--copper);
}

.kernel-text {
    color: var(--text-secondary);
}

.model-selector select {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--storm-blue);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.9rem;
    cursor: pointer;
}

/* Project Tabs */
.project-tabs {
    display: flex;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: var(--bg-darker);
    border-bottom: 1px solid #333;
    overflow-x: auto;
}

.project-tab {
    background: var(--bg-card);
    border: 2px solid transparent;
    color: var(--text-primary);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.project-tab:hover {
    border-color: var(--project-color);
    transform: translateY(-2px);
}

.project-tab.active {
    background: var(--bg-dark);
    border-color: var(--project-color);
    box-shadow: 0 0 20px var(--project-color);
}

.project-emoji {
    font-size: 1.2rem;
}

.project-name {
    font-size: 0.9rem;
    font-weight: 500;
}

/* Main Content Layout */
.main-content {
    flex: 1;
    display: flex;
    overflow: hidden;
}

/* History Sidebar */
.history-sidebar {
    width: 280px;
    background: var(--bg-darker);
    border-right: 1px solid #333;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 1rem;
    border-bottom: 1px solid #333;
}

.sidebar-header h3 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

#search-conversations {
    width: 100%;
    background: var(--bg-card);
    border: 1px solid #333;
    color: var(--text-primary);
    padding: 0.5rem;
    border-radius: 4px;
    font-size: 0.85rem;
}

#search-conversations:focus {
    outline: none;
    border-color: var(--storm-blue);
}

.conversation-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem;
}

.conversation-item {
    background: var(--bg-card);
    border: 1px solid #333;
    border-radius: 6px;
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.conversation-item:hover {
    border-color: var(--storm-blue);
    transform: translateX(4px);
}

.conversation-item.active {
    background: var(--bg-dark);
    border-color: var(--storm-blue);
}

.conversation-date {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.conversation-preview {
    font-size: 0.85rem;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.conversation-cost {
    font-size: 0.7rem;
    color: var(--copper);
    margin-top: 0.25rem;
}

/* Chat Container */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
}

.message {
    margin-bottom: 1.5rem;
    animation: fadeIn 0.3s ease;
}

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

.message-user {
    display: flex;
    justify-content: flex-end;
}

.message-assistant {
    display: flex;
    justify-content: flex-start;
}

.message-content {
    max-width: 70%;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    line-height: 1.6;
}

.message-user .message-content {
    background: var(--storm-blue);
    color: white;
}

.message-assistant .message-content {
    background: var(--bg-card);
    border: 1px solid #333;
}

/* Loading Indicator */
.loading {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    color: var(--electric);
}

.loading.hidden {
    display: none;
}

.lightning-pulse {
    font-size: 1.5rem;
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

/* Input Area */
.input-area {
    background: var(--bg-darker);
    padding: 1rem 2rem;
    border-top: 2px solid var(--storm-blue);
}

.cost-display {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

#message-cost {
    color: var(--copper);
}

#total-cost {
    color: var(--electric);
}

.cost-separator {
    margin: 0 0.5rem;
    color: #444;
}

.input-wrapper {
    position: relative;
    display: flex;
    gap: 0.75rem;
    align-items: flex-end;
    width: 100%;
}

#message-input {
    flex: 1;
    background: var(--bg-card);
    border: 1px solid #333;
    color: var(--text-primary);
    padding: 1rem;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    resize: none;
    transition: border-color 0.3s ease;
}

#message-input:focus {
    outline: none;
    border-color: var(--storm-blue);
    box-shadow: 0 0 10px rgba(20, 117, 201, 0.3);
}

.emoji-toggle-btn {
    background: var(--storm-blue);
    border: none;
    color: white;
    padding: 0.50rem 0.50rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.emoji-toggle-btn:hover {
    background: var(--electric);
    transform: scale(1.05);
}

.send-btn {
    background: var(--storm-blue);
    border: none;
    color: white;
    padding: 1.2rem 1.8rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.send-btn:hover {
    background: var(--electric);
    transform: scale(1.05);
}

.send-btn:active {
    transform: scale(0.95);
}

/* Emoji Picker - Floats above input */
.emoji-picker {
    position: absolute;
    bottom: 100%;
    left: 0;
    right: 0;
    margin-bottom: 0.75rem;
    z-index: 100;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 12px;
    background: var(--bg-card);
    border: 2px solid var(--storm-blue);
    border-radius: 8px;
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.5);
}

.emoji-picker.hidden {
    display: none;
}

.emoji-category {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 10px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 6px;
}

.emoji-btn {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s;
}

.emoji-btn:hover {
    background: var(--storm-blue);
    transform: scale(1.2);
}

.emoji-btn:active {
    transform: scale(0.95);
}

.actions {
    margin-top: 0.75rem;
    display: flex;
    gap: 1rem;
}

.action-btn {
    background: var(--bg-card);
    border: 1px solid #333;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.action-btn:hover {
    border-color: var(--storm-blue);
    color: var(--text-primary);
}

/* Context Menu */
.context-menu {
    position: fixed;
    background: var(--bg-card);
    border: 1px solid var(--storm-blue);
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    min-width: 120px;
}

.context-menu.hidden {
    display: none;
}

.context-menu-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    color: var(--text-primary);
    transition: background 0.2s ease;
}

.context-menu-item:hover {
    background: var(--storm-blue);
}

.context-menu-item:first-child {
    border-radius: 6px 6px 0 0;
}

.context-menu-item:last-child {
    border-radius: 0 0 6px 6px;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-darker);
}

::-webkit-scrollbar-thumb {
    background: var(--storm-blue);
    border-radius: 4px;
}

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