:root {
    --primary: #e07b39;
    --primary-light: #f0a060;
    --primary-dark: #b85a20;
    --bg-main: #1a1a2e;
    --bg-sidebar: #16213e;
    --bg-chat: #0f3460;
    --bg-input: #1a1a2e;
    --bg-message-own: #e07b39;
    --bg-message-other: #16213e;
    --bg-hover: #1f2b47;
    --text-primary: #eaeaea;
    --text-secondary: #8899aa;
    --text-on-primary: #fff;
    --online: #4caf50;
    --offline: #666;
    --danger: #e74c3c;
    --border: #2a3a5a;
    --shadow: rgba(0,0,0,0.3);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.2s ease;
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-main);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

a { color: var(--primary-light); text-decoration: none; }
a:hover { text-decoration: underline; }

button {
    cursor: pointer;
    border: none;
    background: var(--primary);
    color: var(--text-on-primary);
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    transition: background var(--transition);
}
button:hover { background: var(--primary-dark); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

input, textarea {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    outline: none;
    transition: border-color var(--transition);
    font-family: inherit;
}
input:focus, textarea:focus { border-color: var(--primary); }

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }