/* === GLOBAL STYLES & VARIABLES === */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    
    --primary-color: #007AFF;
    --primary-color-light: #E5F2FF;
    --background-color: #F7F8FC;
    --sidebar-bg: #FFFFFF;
    --chat-bg-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAAXNSR0IArs4c6QAAADBJREFUOE9jfPbs2X8GPEAEEgOMDQ0NbwYkaEa8AANB3gYk1GoAGQXw0I0m5GvA2s53AAE2ANnoD8z0GbNFAAAAAElFTkSuQmCC");
    --header-bg: #FFFFFF;
    
    --text-color-primary: #1D232E;
    --text-color-secondary: #6C757D;
    
    --border-color: #EAECEF;
    --shadow-color: rgba(0, 0, 0, 0.05);

    --incoming-msg-bg: #FFFFFF;
    --outgoing-msg-bg: #D9FDD3;
    
    --green-dot: #28C76F;
    --orange-dot: #FF9F43;
    --red-dot: #EA5455;
    
    --border-radius: 12px;
}

* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    margin: 0;
    background-color: var(--background-color);
    color: var(--text-color-primary);
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

/* === UTILITIES === */
.container { width: 95%; max-width: 1600px; margin: 0 auto; }
.btn {
    cursor: pointer;
    border: none;
    padding: 10px 18px;
    border-radius: 8px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background-color 0.2s ease, transform 0.1s ease;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background-color: var(--primary-color); color: white; }
.btn-primary:hover { background-color: #0056b3; }
.btn-secondary { background: #F0F2F5; color: var(--text-color-primary); }
.btn-secondary:hover { background: #E5E7EB; }
.btn-icon { background: transparent; padding: 8px; border-radius: 50%; }
.btn-icon:hover { background: #f0f2f5; }

svg { width: 20px; height: 20px; stroke-width: 2; flex-shrink: 0; }

/* === HEADER === */
.header {
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
    flex-shrink: 0;
}
.header-content { display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; align-items: center; gap: 12px; }
.logo h1 { font-size: 1.2rem; font-weight: 600; margin: 0; }
.logo-icon { width: 28px; height: 28px; color: var(--primary-color); }
.header-stats { display: flex; gap: 24px; }
.stat-card { text-align: right; }
.stat-label { font-size: 12px; color: var(--text-color-secondary); }
.stat-value { font-size: 18px; font-weight: 600; }
.connection-status { display: flex; align-items: center; gap: 8px; padding-left: 24px; border-left: 1px solid var(--border-color); }
.status-dot { width: 10px; height: 10px; border-radius: 50%; background-color: var(--orange-dot); }
.status-dot.connected { background-color: var(--green-dot); }
.status-dot.disconnected { background-color: var(--red-dot); }
.status-text { font-weight: 500; }

/* === LAYOUT === */
.main-container { flex-grow: 1; padding: 20px 0; overflow: hidden; }
.layout { display: grid; grid-template-columns: 350px 1fr; height: calc(100vh - 100px); gap: 20px; }

/* === SIDEBAR === */
.sidebar { background-color: var(--sidebar-bg); border-radius: var(--border-radius); display: flex; flex-direction: column; overflow: hidden; border: 1px solid var(--border-color); }
.sidebar-header { padding: 16px; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
.sidebar-header h2 { margin: 0; font-size: 1.1rem; }
.search-box { padding: 12px 16px; position: relative; }
.search-box input { width: 100%; padding: 10px 16px 10px 40px; border: 1px solid var(--border-color); border-radius: 8px; background-color: #f9fafb; }
.search-icon { position: absolute; left: 28px; top: 50%; transform: translateY(-50%); color: var(--text-color-secondary); width: 18px; height: 18px; }
.broadcast-section { padding: 0 16px 16px; border-bottom: 1px solid var(--border-color); }
.btn-broadcast { width: 100%; }
.users-list { overflow-y: auto; flex-grow: 1; }
.user-item { display: flex; align-items: center; padding: 12px 16px; cursor: pointer; border-bottom: 1px solid var(--border-color); transition: background-color 0.2s ease; }
.user-item:hover { background-color: #f9fafb; }
.user-item.selected { background-color: var(--primary-color-light); border-right: 3px solid var(--primary-color); }
.user-avatar, .avatar { width: 44px; height: 44px; border-radius: 50%; background-color: var(--primary-color); color: white; display: grid; place-items: center; font-weight: 500; font-size: 1.1rem; flex-shrink: 0; }
.user-info { margin-left: 12px; overflow: hidden; }
.user-name { font-weight: 500; white-space: nowrap; }
.user-username { font-size: 0.8rem; color: var(--text-color-secondary); }

/* === MAIN CONTENT & CHAT === */
.main-content { background-color: var(--sidebar-bg); border-radius: var(--border-radius); display: flex; flex-direction: column; overflow: hidden; border: 1px solid var(--border-color); }
.empty-state { flex-grow: 1; display: grid; place-content: center; text-align: center; color: var(--text-color-secondary); }
.empty-icon { width: 64px; height: 64px; margin: 0 auto 16px; }
.chat-container { flex-grow: 1; display: none; flex-direction: column; overflow: hidden; }
.chat-header { padding: 12px 20px; border-bottom: 1px solid var(--border-color); display: flex; align-items: center; justify-content: space-between; flex-shrink: 0; }
.chat-header .user-info { display: flex; align-items: center; gap: 12px; }
.messages-area { flex-grow: 1; overflow-y: auto; padding: 20px; background-image: var(--chat-bg-image); display: flex; flex-direction: column; gap: 12px; }
.message { max-width: 75%; display: flex; flex-direction: column; }
.message-content { padding: 10px 16px; border-radius: 18px; line-height: 1.5; }
.message.incoming { align-self: flex-start; }
.message.incoming .message-content { background-color: var(--incoming-msg-bg); border-top-left-radius: 4px; box-shadow: 0 1px 2px var(--shadow-color); }
.message.outgoing { align-self: flex-end; }
.message.outgoing .message-content { background-color: var(--outgoing-msg-bg); border-top-right-radius: 4px; box-shadow: 0 1px 2px var(--shadow-color); }
.message.system .message-content { background-color: #f0f2f5; color: #6C757D; font-style: italic; text-align: center; max-width: 100%; align-self: center; border-radius: 8px; }
.message-input-container { padding: 16px 20px; border-top: 1px solid var(--border-color); background-color: #f9fafb; flex-shrink: 0; }
.message-form { display: flex; gap: 12px; align-items: flex-end; }
#message-input { flex-grow: 1; padding: 12px 16px; border-radius: 22px; border: 1px solid var(--border-color); resize: none; max-height: 120px; font-family: var(--font-family); font-size: 1rem; }
.btn-send { background-color: var(--primary-color); color: white; height: 44px; width: 44px; padding: 0; border-radius: 50%; flex-shrink: 0; }
.btn-send:hover { background-color: #0056b3; }

/* === MODAL === */
/* --- ИСПРАВЛЕНИЕ ЗДЕСЬ --- */
.modal {
    display: none; /* Hidden by default */
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    align-items: center;
    justify-content: center;
}
.modal-content { background-color: white; padding: 24px; border-radius: var(--border-radius); max-width: 500px; width: 90%; box-shadow: 0 5px 15px rgba(0,0,0,0.3); }
.modal-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border-color); padding-bottom: 12px; margin-bottom: 20px; }
.modal-header h2 { margin: 0; font-size: 1.2rem; }
.modal-body textarea { width: 100%; box-sizing: border-box; margin-bottom: 12px; padding: 12px; border: 1px solid var(--border-color); border-radius: 8px; }
.modal-footer { display: flex; justify-content: flex-end; gap: 12px; }
.template-list { list-style: none; padding: 0; margin: 0; }
.template-item { padding: 12px; border-bottom: 1px solid #eee; cursor: pointer; transition: background-color 0.2s ease; }
.template-item:hover { background-color: #f9f9f9; }


/* === TOAST NOTIFICATIONS === */
.toast-container { position: fixed; bottom: 20px; right: 20px; z-index: 1001; }
.toast { padding: 16px 24px; background-color: var(--text-color-primary); color: white; border-radius: 8px; margin-top: 12px; box-shadow: 0 4px 12px rgba(0,0,0,0.15); font-weight: 500; }

.user-name {
    display: flex;
    align-items: center;
    gap: 6px;
}
.user-name span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}