:root {
    --bg-main: #0f172a;
    --card-bg: #1e293b;
    --card-border: #334155;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #00c6ff;
    --accent-hover: #0072ff;
    --danger: #ef4444;
}

body.theme-light {
    --bg-main: #f1f5f9;
    --card-bg: #ffffff;
    --card-border: #cbd5e1;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
}

body.theme-neon {
    --bg-main: #050508;
    --card-bg: #0d0e15;
    --card-border: #ff0055;
    --text-main: #ffffff;
    --text-muted: #8888aa;
    --accent: #ff0055;
    --accent-hover: #ff3300;
}

body.theme-emerald {
    --bg-main: #0b141a;
    --card-bg: #111b21;
    --card-border: #222d34;
    --text-main: #e9edef;
    --text-muted: #8696a0;
    --accent: #00a884;
    --accent-hover: #008069;
}

/* ФИКС ДЛЯ МОБИЛЬНЫХ ЭКРАНОВ И СКРОЛЛА */
html, body {
    height: 100%;
    height: 100dvh;
    margin: 0;
    padding: 0;
    overflow: hidden;
    position: fixed;
    width: 100%;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
}

* { box-sizing: border-box; }

.auth-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 20px;
}

.auth-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 30px;
    border-radius: 16px;
    width: 100%;
    max-width: 360px;
    text-align: center;
}

.auth-card input {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--card-border);
    background: var(--bg-main);
    color: var(--text-main);
    margin-bottom: 12px;
}

.auth-card button {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: none;
    background: var(--accent);
    color: white;
    font-weight: bold;
    cursor: pointer;
}

.app-container {
    display: flex;
    width: 100%;
    height: 100%;
    height: 100dvh;
    overflow: hidden;
    position: relative;
}

.nav-rail {
    width: 60px;
    background: var(--card-bg);
    border-right: 1px solid var(--card-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 15px 0;
    gap: 20px;
}

.nav-item {
    color: var(--text-muted);
    font-size: 20px;
    cursor: pointer;
}

.nav-item.active, .nav-item:hover { color: var(--accent); }

.sidebar {
    width: 280px;
    background: var(--card-bg);
    border-right: 1px solid var(--card-border);
    display: flex;
    flex-direction: column;
}

.sidebar-header { padding: 15px; border-bottom: 1px solid var(--card-border); }
.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-main);
    padding: 8px 12px;
    border-radius: 8px;
    margin-top: 10px;
}
.search-box input {
    background: transparent;
    border: none;
    color: var(--text-main);
    margin-left: 8px;
    outline: none;
    width: 100%;
}

.chats-list { flex: 1; overflow-y: auto; }
.chat-item {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    gap: 12px;
    cursor: pointer;
}
.chat-item.active { background: rgba(255,255,255,0.05); }
.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.chat-main {
    display: flex;
    flex-direction: column;
    flex: 1 1 auto;
    height: 100%;
    min-width: 0;
    position: relative;
    overflow: hidden;
}

.chat-header {
    height: 60px;
    padding: 0 15px;
    border-bottom: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--card-bg);
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 18px;
    cursor: pointer;
    padding: 8px;
}
.icon-btn:hover { color: var(--text-main); }
.icon-btn.recording { color: var(--danger); animation: pulse 1s infinite; }

@keyframes pulse { 0% { opacity: 1; } 50% { opacity: 0.3; } 100% { opacity: 1; } }

/* ВАЖНО: КОНТЕЙНЕР СООБЩЕНИЙ С ЖЕСТКИМ СКРОЛЛОМ */
.messages-container {
    flex: 1 1 auto;
    height: 0;
    min-height: 0;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch;
    padding: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.msg-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    width: 100%;
    position: relative;
}

.msg-out-wrapper { justify-content: flex-end; }

.msg-bubble {
    max-width: 75%;
    padding: 10px 14px;
    border-radius: 14px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    word-break: break-word;
    position: relative;
}

.msg-out {
    background: var(--accent);
    color: white;
    border: none;
}

.msg-author { font-size: 11px; font-weight: bold; color: var(--text-muted); margin-bottom: 4px; }
.msg-out .msg-author { color: rgba(255,255,255,0.8); }

.msg-meta {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 4px;
    font-size: 10px;
    opacity: 0.7;
    margin-top: 4px;
}

.msg-media { max-width: 100%; max-height: 250px; border-radius: 8px; margin-top: 6px; cursor: pointer; }
.msg-audio { width: 100%; margin-top: 6px; }

.msg-reply-quote {
    background: rgba(0,0,0,0.15);
    border-left: 3px solid var(--text-main);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    margin-bottom: 6px;
}

.reactions-row { display: flex; gap: 4px; margin-top: 4px; flex-wrap: wrap; }
.react-btn {
    background: rgba(0,0,0,0.2);
    border: none;
    border-radius: 10px;
    padding: 2px 6px;
    font-size: 11px;
    color: var(--text-main);
    cursor: pointer;
}
.react-btn.active { background: rgba(255,255,255,0.3); }

.chat-input-container {
    background: var(--card-bg);
    border-top: 1px solid var(--card-border);
    padding: 10px;
}

.chat-input-form { display: flex; align-items: center; gap: 8px; }
.chat-input-form input[type="text"] {
    flex: 1;
    background: var(--bg-main);
    border: 1px solid var(--card-border);
    padding: 10px 14px;
    border-radius: 20px;
    color: var(--text-main);
    outline: none;
}

.send-btn {
    background: var(--accent);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
}

.reply-banner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 12px;
    background: var(--bg-main);
    border-radius: 8px;
    margin-bottom: 8px;
}

.custom-context-menu {
    position: fixed;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    display: none;
    flex-direction: column;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.context-menu-item {
    padding: 10px 16px;
    font-size: 13px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}
.context-menu-item:hover { background: rgba(255,255,255,0.05); }
.context-menu-item.danger { color: var(--danger); }

.emoji-picker {
    position: absolute;
    bottom: 60px;
    right: 20px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 10px;
    display: none;
    grid-template-columns: repeat(6, 1fr);
    gap: 8px;
    max-height: 200px;
    overflow-y: auto;
    z-index: 100;
}
.emoji-item { font-size: 20px; cursor: pointer; text-align: center; }

.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.6);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal-content {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    width: 90%;
    max-width: 400px;
    border: 1px solid var(--card-border);
}

.theme-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 10px; }
.theme-option {
    padding: 10px;
    border: 1px solid var(--card-border);
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
    font-size: 12px;
}
.theme-option.active { border-color: var(--accent); font-weight: bold; }

/* АДАПТИВ ДЛЯ СМАРТФОНОВ */
@media (max-width: 768px) {
    .nav-rail, .sidebar { display: none !important; }
    .chat-main { width: 100vw !important; display: flex !important; }
    .msg-bubble { max-width: 85% !important; }
    .chat-input-form input[type="text"] { font-size: 16px !important; }
}