:root {
    --bg-dark: #070a12;
    --sidebar-bg: #0b0f19;
    --chat-bg: #03070d;
    --card-bg: #121826;
    --primary: #3a86ff;
    --primary-hover: #2563eb;
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.08);
}

body.dark-theme {
    --bg-dark: #000000;
    --sidebar-bg: #111111;
    --chat-bg: #0a0a0a;
    --card-bg: #1c1c1c;
}

body.cyberpunk {
    --bg-dark: #0f051d;
    --sidebar-bg: #1a0933;
    --chat-bg: #090214;
    --card-bg: #2d0b5a;
    --primary: #ff007f;
    --primary-hover: #d6006e;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow: hidden;
    height: 100vh;
}

.splash-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: #000;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
}

#matrixCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.splash-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--primary);
    text-shadow: 0 0 10px var(--primary);
}

.app-container {
    display: flex;
    width: 100vw;
    height: 100vh;
}

.hidden {
    display: none !important;
}

.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 15px;
    transition: all 0.3s ease;
}

.sidebar.collapsed {
    margin-left: -260px;
}

.sidebar-header h2 {
    font-size: 18px;
    color: var(--primary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-new-chat {
    background-color: var(--primary);
    color: #fff;
    border: none;
    padding: 10px 15px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    transition: 0.2s;
}

.btn-new-chat:hover {
    background-color: var(--primary-hover);
}

.sidebar-menu {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.menu-title {
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 1px;
    margin-bottom: 5px;
}

.menu-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 10px;
    border-radius: 6px;
    text-align: left;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    transition: 0.2s;
}

.menu-btn:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--chat-bg);
    position: relative;
}

.top-bar {
    height: 50px;
    padding: 0 15px;
    display: flex;
    align-items: center;
    gap: 15px;
    border-bottom: 1px solid var(--border-color);
}

.icon-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mode-badge {
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 20px;
    background: rgba(58, 134, 255, 0.1);
    color: var(--primary);
    border: 1px solid rgba(58, 134, 255, 0.2);
}

.chat-viewport {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.ai-welcome-box {
    text-align: center;
    margin: auto;
    max-width: 500px;
}

.ai-welcome-box h1 {
    font-size: 28px;
    margin-bottom: 10px;
}

.ai-welcome-box p {
    color: var(--text-muted);
}

.message {
    display: flex;
    margin-bottom: 10px;
}

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

.message.ai {
    justify-content: flex-start;
}

.message-bubble {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.5;
    word-break: break-word;
}

.message.user .message-bubble {
    background-color: var(--primary);
    color: #fff;
    border-bottom-right-radius: 2px;
}

.message.ai .message-bubble {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-bottom-left-radius: 2px;
}

.ai-image-output {
    max-width: 100%;
    border-radius: 8px;
    margin-top: 8px;
}

.code-block-container {
    background: #090d16;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin: 10px 0;
    overflow: hidden;
}

.code-header {
    background: rgba(255, 255, 255, 0.05);
    padding: 6px 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
}

.copy-code-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 11px;
    transition: 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.copy-code-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.code-block-container pre {
    padding: 12px;
    overflow-x: auto;
    margin: 0;
}

.code-block-container code {
    font-family: 'Consolas', 'Courier New', monospace;
    font-size: 13px;
    color: #50fa7b;
}

.input-area-container {
    padding: 15px 20px;
    border-top: 1px solid var(--border-color);
}

.input-box {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 8px 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.input-box textarea {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-main);
    resize: none;
    outline: none;
    height: 24px;
    max-height: 120px;
    font-size: 14px;
}

.input-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.icon-action-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 16px;
    padding: 6px;
    transition: 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-action-btn:hover, .icon-action-btn.active {
    color: var(--primary);
}

.icon-action-btn.listening {
    color: #ff4d6d;
    animation: pulse 1s infinite;
}

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

.btn-send {
    background-color: var(--primary);
    color: #fff;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-send:hover {
    background-color: var(--primary-hover);
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    width: 400px;
    border-radius: 12px;
    padding: 20px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.close-btn {
    cursor: pointer;
    font-size: 20px;
}

.credits-body {
    text-align: center;
    line-height: 1.8;
}

.credits-main {
    font-weight: bold;
    color: var(--primary);
    margin-bottom: 10px;
}

.credits-body hr {
    border: 0;
    height: 1px;
    background: var(--border-color);
    margin: 10px 0;
}