:root {
    --evo-navy: #0b1f3a;
    --evo-navy-2: #102b52;
    --evo-gold: #d4af37;
    --evo-soft: #f5f7fb;
    --evo-border: #dbe3ef;
    --evo-text: #1f2937;
    --evo-success: #1f9d55;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: "Inter", "Segoe UI", Arial, sans-serif;
    background: linear-gradient(135deg, #eef3fb 0%, #f7f9fc 100%);
    color: var(--evo-text);
}

.app-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 360px 1fr;
}

.sidebar-panel {
    background: linear-gradient(180deg, var(--evo-navy) 0%, var(--evo-navy-2) 100%);
    color: white;
    padding: 28px;
    gap: 22px;
}

.brand-box {
    display: flex;
    align-items: center;
    gap: 16px;
}

.brand-mark {
    width: 56px;
    height: 56px;
    border-radius: 18px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--evo-gold), #f3dc8e);
    color: var(--evo-navy);
    font-weight: 800;
    font-size: 1.5rem;
}

.brand-box h1 {
    font-size: 1.1rem;
    margin: 0;
}
.brand-box p,
.info-card p,
.info-card li {
    opacity: .92;
}

.info-card {
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 20px;
    padding: 20px;
    backdrop-filter: blur(10px);
}
.info-card h2 {
    font-size: 1rem;
    margin-bottom: 14px;
}
.info-card ul {
    padding-left: 18px;
    margin: 0;
}
.small-note { margin-top: auto; }

.chat-panel {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}
.chat-header,
.welcome-banner,
.chat-window,
.chat-footer {
    background: rgba(255,255,255,.95);
    border: 1px solid var(--evo-border);
    border-radius: 24px;
    box-shadow: 0 20px 50px rgba(15, 23, 42, .08);
}
.chat-header {
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.chat-header h2,
.welcome-banner h3 { margin: 0; }
.chat-header p,
.welcome-banner p {
    margin: 4px 0 0;
    color: #64748b;
}
.status-pill {
    padding: 10px 14px;
    border-radius: 999px;
    background: #eefbf3;
    color: var(--evo-success);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}
.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--evo-success);
}
.welcome-banner {
    padding: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}
.welcome-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.btn-evolution {
    background: linear-gradient(135deg, var(--evo-navy), var(--evo-navy-2));
    color: #fff;
    border: none;
}
.btn-evolution:hover { color: #fff; opacity: .96; }
.btn-outline-evolution {
    border: 1px solid var(--evo-navy);
    color: var(--evo-navy);
}
.chat-window {
    flex: 1;
    min-height: 440px;
    max-height: calc(100vh - 310px);
    overflow-y: auto;
    padding: 24px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}
.message-row {
    display: flex;
    gap: 12px;
    margin-bottom: 18px;
    align-items: flex-start;
}
.message-row.user {
    flex-direction: row-reverse;
}
.avatar {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background: var(--evo-navy);
    color: white;
    flex-shrink: 0;
}
.message-row.user .avatar {
    background: var(--evo-gold);
    color: var(--evo-navy);
}
.message-bubble {
    max-width: 78%;
    padding: 14px 16px;
    border-radius: 18px;
    background: #eef4fb;
    line-height: 1.6;
    white-space: pre-line;
}
.message-row.user .message-bubble {
    background: var(--evo-navy);
    color: white;
}
.chat-footer {
    padding: 18px;
}
.privacy-note {
    margin-top: 10px;
    color: #64748b;
    font-size: .92rem;
    display: flex;
    align-items: center;
    gap: 8px;
}
.typing {
    opacity: .7;
    font-style: italic;
}
@media (max-width: 992px) {
    .app-shell { grid-template-columns: 1fr; }
    .chat-panel { padding: 14px; }
    .welcome-banner,
    .chat-header { flex-direction: column; align-items: flex-start; }
    .message-bubble { max-width: 88%; }
}