:root {
    --bg-dark: #0f111a;
    --bg-sidebar: #161922;
    --accent-primary: #7c4dff;
    --accent-secondary: #00e5ff;
    --text-main: #e0e0e0;
    --text-dim: #94a3b8;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --msg-ai: #1e293b;
    --msg-user: #312e81;
    --success: #10b981;
    --error: #ef4444;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    height: 100vh;
    overflow: hidden;
}

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

/* --- Sidebar --- */
.sidebar {
    width: 280px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    padding: 24px;
    flex-shrink: 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 40px;
}

.logo i {
    color: var(--accent-secondary);
}

.ai-tag {
    font-size: 0.7rem;
    background: linear-gradient(45deg, var(--accent-primary), var(--accent-secondary));
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 4px;
    vertical-align: top;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 40px;
}

.nav-item {
    background: transparent;
    border: none;
    color: var(--text-dim);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    font-weight: 500;
    text-align: left;
}

.nav-item:hover {
    background: var(--glass-bg);
    color: var(--text-main);
}

.nav-item.active {
    background: var(--accent-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(124, 77, 255, 0.3);
}

.repo-history {
    flex-grow: 1;
}

.repo-history h3 {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--text-dim);
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.empty-context {
    border: 1px dashed var(--glass-border);
    padding: 20px;
    border-radius: 12px;
    color: var(--text-dim);
    font-size: 0.9rem;
    text-align: center;
}

.repo-card-mini {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 16px;
}

.repo-card-mini .name {
    font-weight: 600;
    margin-bottom: 4px;
    display: block;
    word-break: break-all;
}

.repo-card-mini .desc {
    font-size: 0.8rem;
    color: var(--text-dim);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.footer-btn {
    width: 100%;
    padding: 12px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s;
}

.footer-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* --- Main Content --- */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-dark);
    position: relative;
}

.top-bar {
    height: 70px;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    background-color: rgba(15, 17, 26, 0.8);
    backdrop-filter: blur(10px);
    z-index: 10;
}

.top-bar h2 {
    font-size: 1.2rem;
    font-weight: 600;
}

.repo-stats {
    display: flex;
    align-items: center;
    gap: 20px;
}

.stat {
    font-size: 0.9rem;
    color: var(--text-dim);
}

.stat i {
    margin-right: 4px;
}

.language-pill {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* --- Views --- */
.view-container {
    flex-grow: 1;
    position: relative;
    overflow: hidden;
}

.view {
    display: none;
    height: 100%;
    padding: 32px;
    overflow-y: auto;
}

.view.active {
    display: flex;
    flex-direction: column;
}

#chat-view.view.active {
    padding: 0;
    overflow: hidden;
}

/* --- Chat Interface --- */
.messages-container {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 24px;
    padding: 32px;
    padding-bottom: 120px;
    overflow-y: auto;
}

.message {
    max-width: 85%;
    display: flex;
    flex-direction: column;
}

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

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

.msg-content {
    padding: 16px 20px;
    border-radius: 18px;
    line-height: 1.6;
    font-size: 1rem;
    white-space: pre-wrap;
}

.system .msg-content {
    background-color: var(--msg-ai);
    border: 1px solid var(--glass-border);
    border-bottom-left-radius: 4px;
}

.user .msg-content {
    background: linear-gradient(135deg, var(--accent-primary), #6200ea);
    color: white;
    border-bottom-right-radius: 4px;
}

.thinking .msg-content {
    color: var(--text-dim);
    font-style: italic;
    background: var(--glass-bg);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { opacity: 0.6; }
    50% { opacity: 1; }
    100% { opacity: 0.6; }
}

.input-area {
    position: absolute;
    bottom: 32px;
    left: 32px;
    right: 32px;
}

.input-wrapper {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

#chat-input {
    flex-grow: 1;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-family: inherit;
    font-size: 1rem;
    padding: 12px 0;
    outline: none;
    resize: none;
}

#send-btn {
    background: var(--accent-primary);
    border: none;
    color: white;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

#send-btn:hover:not(:disabled) {
    transform: scale(1.05);
    background: #6200ea;
}

#send-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* --- Forms --- */
.form-card {
    max-width: 600px;
    margin: 40px auto;
    background: var(--bg-sidebar);
    border: 1px solid var(--glass-border);
    padding: 40px;
    border-radius: 24px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.2);
}

.form-card h2 {
    margin-bottom: 12px;
    font-size: 1.8rem;
}

.form-card p {
    color: var(--text-dim);
    margin-bottom: 32px;
}

.input-group {
    margin-bottom: 24px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-dim);
    font-size: 0.9rem;
}

.input-group input {
    width: 100%;
    background: var(--bg-dark);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 14px 16px;
    color: var(--text-main);
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s;
}

.input-group input:focus {
    border-color: var(--accent-primary);
}

.primary-btn {
    width: 100%;
    padding: 16px;
    background: var(--accent-primary);
    border: none;
    color: white;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.primary-btn:hover {
    background: #6200ea;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(124, 77, 255, 0.4);
}

/* --- Overlay --- */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 17, 26, 0.9);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.loader-content {
    text-align: center;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(124, 77, 255, 0.1);
    border-top: 3px solid var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.sub-text {
    font-size: 0.8rem;
    color: var(--text-dim);
    display: block;
    margin-top: 8px;
}

/* Markdown styling in chat */
.msg-content code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 5px;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
}

.msg-content pre {
    background: #0d1117;
    padding: 12px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 10px 0;
    border: 1px solid var(--glass-border);
}

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