:root {
    --bg: #e9e2d5;
    --panel: #ffffff;
    --panel2: #e8dfcf;
    --text: #3d352b;
    --muted: #81745f;
    --accent: #795f40;
    --border: #d8cbb5;
}

body {
    background: var(--bg);
    color: var(--text);
}

.site-header {
    width: 100%;
    background: #795f40;
    overflow: hidden;
}

.site-header img {
    display: block;
    width: 100%;
    height: auto;
}

.app {
    min-height: calc(100vh - 112px);
    background: var(--bg);
}

.sidebar {
    background: #f4efe6;
    border-left: 1px solid var(--border);
}

.brand {
    color: #795f40;
}

.brand span {
    color: #a18459;
}

.brand-subtitle,
.mode-title,
.sidebar-footer,
.topbar-title,
.note {
    color: var(--muted);
}

.mode {
    color: var(--text);
}

.mode:hover,
.mode.active {
    background: #e9e0d1;
    border-color: #d5c5ab;
}

.mode.active {
    border-right: 3px solid #795f40;
}

.topbar {
    background: #fff;
    border-bottom: 1px solid var(--border);
}

.status {
    color: #64865c;
}

.chat {
    background: transparent;
}

.welcome h1 {
    color: #604b32;
}

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

.message.user {
    background: #e9e0d1;
    border: 1px solid #d8cbb5;
    color: #443929;
}

.message.assistant {
    background: #fff;
    border: 1px solid #e0d6c7;
    color: #39332b;
}

.composer {
    background: #fff;
    border: 1px solid #d8cbb5;
    box-shadow: 0 3px 14px rgba(70, 52, 29, .06);
}

.composer textarea {
    color: #39332b;
}

.composer textarea::placeholder {
    color: #a39887;
}

.composer button {
    background: #795f40;
    color: #fff;
}

.composer button:hover {
    background: #604b32;
    opacity: 1;
}

@media (max-width: 700px) {
    .app {
        min-height: calc(100vh - 40px);
    }
}

/* تحسين تنسيق إجابات المساعد */
.message.assistant {
    line-height: 2.1;
    padding: 20px 24px;
    font-size: 15px;
}

.message.assistant strong {
    color: #604b32;
    font-weight: 700;
}

.message.assistant a {
    color: #795f40;
    text-decoration: none;
    font-weight: 600;
    border-bottom: 1px solid #b9a181;
    overflow-wrap: anywhere;
}

.message.assistant a:hover {
    color: #4f3b25;
    border-bottom: 2px solid #795f40;
}

.message.assistant p {
    margin: 0 0 14px;
}

@media (max-width: 700px) {
    .message.assistant {
        padding: 16px;
        font-size: 14px;
        line-height: 2;
    }
}