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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #0f0f0f;
    color: #e0e0e0;
    min-height: 100vh;
}

/* ── Auth ── */
.auth-container {
    max-width: 400px;
    margin: 80px auto;
    padding: 40px;
    background: #1a1a1a;
    border-radius: 16px;
    border: 1px solid #2a2a2a;
}

.auth-container h1 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 8px;
    color: #ffffff;
}

.subtitle {
    text-align: center;
    color: #888;
    margin-bottom: 32px;
    font-size: 0.9rem;
}

.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
}

.tab {
    flex: 1;
    padding: 10px;
    border: 1px solid #2a2a2a;
    background: transparent;
    color: #888;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.tab.active {
    background: #6366f1;
    color: white;
    border-color: #6366f1;
}

/* ── Inputs ── */
input[type="email"],
input[type="password"],
input[type="text"] {
    width: 100%;
    padding: 12px 16px;
    background: #0f0f0f;
    border: 1px solid #2a2a2a;
    border-radius: 8px;
    color: #e0e0e0;
    font-size: 0.95rem;
    margin-bottom: 12px;
    outline: none;
    transition: border-color 0.2s;
}

input:focus {
    border-color: #6366f1;
}

/* ── Buttons ── */
.btn-primary {
    width: 100%;
    padding: 12px;
    background: #6366f1;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-primary:hover {
    background: #5558e8;
}

.btn-secondary {
    padding: 8px 16px;
    background: transparent;
    color: #888;
    border: 1px solid #2a2a2a;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    color: #e0e0e0;
    border-color: #444;
}

/* ── Error/Status ── */
.error {
    color: #ef4444;
    font-size: 0.85rem;
    margin-top: 8px;
    text-align: center;
}

.status {
    font-size: 0.85rem;
    margin-top: 8px;
    color: #888;
}

/* ── Nav ── */
nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 32px;
    background: #1a1a1a;
    border-bottom: 1px solid #2a2a2a;
}

nav h2 {
    color: #ffffff;
}

/* ── Dashboard ── */
.dashboard-container {
    max-width: 900px;
    margin: 32px auto;
    padding: 0 16px;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 24px;
}

.panel {
    background: #1a1a1a;
    border: 1px solid #2a2a2a;
    border-radius: 12px;
    padding: 24px;
}

.panel h3 {
    color: #ffffff;
    margin-bottom: 16px;
    font-size: 1rem;
}

/* ── Upload ── */
.upload-area {
    border: 2px dashed #2a2a2a;
    border-radius: 8px;
    padding: 32px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s;
}

.upload-area:hover {
    border-color: #6366f1;
}

.upload-area p {
    color: #888;
}

/* ── Document Card ── */
.doc-card {
    background: #0f0f0f;
    border: 1px solid #2a2a2a;
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: border-color 0.2s;
}

.doc-card:hover {
    border-color: #6366f1;
}

.doc-info h4 {
    color: #ffffff;
    font-size: 0.9rem;
    margin-bottom: 4px;
}

.doc-status {
    font-size: 0.75rem;
    padding: 3px 8px;
    border-radius: 20px;
}

.doc-status.indexed {
    background: #052e16;
    color: #4ade80;
}

.doc-status.processing {
    background: #1c1917;
    color: #fbbf24;
}

.doc-status.failed {
    background: #1c0a0a;
    color: #ef4444;
}

.doc-delete {
    background: transparent;
    border: none;
    color: #666;
    cursor: pointer;
    font-size: 1.1rem;
    padding: 4px 8px;
    border-radius: 4px;
    transition: color 0.2s;
}

.doc-delete:hover {
    color: #ef4444;
}

.loading {
    color: #888;
    font-size: 0.9rem;
}

/* ── Chat ── */
.chat-container {
    max-width: 800px;
    margin: 0 auto;
    height: calc(100vh - 65px);
    display: flex;
    flex-direction: column;
    padding: 16px;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.message {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 0.95rem;
    line-height: 1.6;
    white-space: pre-wrap;
}

.message.user {
    background: #6366f1;
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.message.assistant {
    background: #1a1a1a;
    color: #e0e0e0;
    align-self: flex-start;
    border: 1px solid #2a2a2a;
    border-bottom-left-radius: 4px;
}

.message.streaming {
    opacity: 0.8;
}

.chat-input-area {
    display: flex;
    gap: 12px;
    padding: 16px 0;
    border-top: 1px solid #2a2a2a;
}

.chat-input-area input {
    flex: 1;
    margin-bottom: 0;
}

.chat-input-area .btn-primary {
    width: auto;
    padding: 12px 24px;
}