/* Isaac Secure Messenger — Styles */
:root {
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #242424;
    --bg-input: #2a2a2a;
    --text-primary: #e4e4e4;
    --text-secondary: #888;
    --text-muted: #555;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-dim: rgba(59,130,246,0.15);
    --green: #22c55e;
    --green-dim: rgba(34,197,94,0.15);
    --red: #ef4444;
    --red-dim: rgba(239,68,68,0.12);
    --orange: #f59e0b;
    --border: #333;
    --radius: 10px;
    --radius-sm: 6px;
    --font: -apple-system, BlinkMacSystemFont, "SF Pro", "Segoe UI", sans-serif;
    --mono: "SF Mono", "SFMono-Regular", "Fira Code", monospace;
}

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

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

/* ── Layout ── */
.app-container { display: flex; height: 100vh; }
.sidebar {
    width: 300px; min-width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex; flex-direction: column;
}
.main-pane { flex: 1; display: flex; flex-direction: column; }

/* ── Sidebar ── */
.sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; gap: 10px;
}
.sidebar-header .logo {
    width: 32px; height: 32px;
    background: var(--accent);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 16px; font-weight: 700;
}
.sidebar-header .title { flex: 1; font-size: 15px; font-weight: 600; }
.status-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--green);
}
.status-dot.offline { background: var(--text-muted); }

.sidebar-user {
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
    font-size: 12px; color: var(--text-secondary);
    word-break: break-all;
    font-family: var(--mono);
}

.peers-header {
    padding: 12px 16px 6px;
    font-size: 11px; font-weight: 600;
    color: var(--text-muted); text-transform: uppercase;
    letter-spacing: 0.5px;
}
.peers-list { flex: 1; overflow-y: auto; }
.peer-item {
    padding: 10px 16px;
    display: flex; align-items: center; gap: 12px;
    cursor: pointer;
    transition: background 0.15s;
    border-left: 3px solid transparent;
}
.peer-item:hover { background: var(--bg-tertiary); }
.peer-item.active {
    background: var(--accent-dim);
    border-left-color: var(--accent);
}
.peer-avatar {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--accent);
    display: flex; align-items: center; justify-content: center;
    font-weight: 600; font-size: 14px;
    flex-shrink: 0;
}
.peer-info { flex: 1; min-width: 0; }
.peer-name { font-size: 14px; font-weight: 500; }
.peer-fp { font-size: 11px; color: var(--text-muted); font-family: var(--mono); }
.peer-online { font-size: 11px; color: var(--green); }
.peer-offline { font-size: 11px; color: var(--text-muted); }
.empty-state {
    padding: 24px 16px;
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
}

/* ── Chat area ── */
.chat-header {
    padding: 12px 20px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; gap: 12px;
}
.chat-header .peer-avatar { width: 36px; height: 36px; font-size: 13px; }
.chat-header .peer-name { font-size: 15px; }
.chat-header .peer-status { font-size: 12px; color: var(--text-muted); }

.chat-messages {
    flex: 1; overflow-y: auto;
    padding: 16px 20px;
    display: flex; flex-direction: column; gap: 4px;
}

/* ── Messages ── */
.message {
    max-width: 75%;
    padding: 8px 14px;
    border-radius: 18px;
    font-size: 14px;
    line-height: 1.45;
    position: relative;
    animation: msgIn 0.2s ease;
}
@keyframes msgIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

.message.sent {
    align-self: flex-end;
    background: var(--accent);
    color: #fff;
    border-bottom-right-radius: 4px;
}
.message.received {
    align-self: flex-start;
    background: var(--bg-tertiary);
    border-bottom-left-radius: 4px;
}
.message.system {
    align-self: center;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 12px;
    padding: 4px 16px;
    border-radius: 12px;
}
.message .time {
    font-size: 10px;
    color: rgba(255,255,255,0.6);
    text-align: right;
    margin-top: 2px;
}
.message.received .time { color: var(--text-muted); }

.message .disappear-timer {
    font-size: 10px;
    color: var(--orange);
    margin-top: 2px;
    display: flex; align-items: center; gap: 4px;
}
.message .voice-play {
    display: flex; align-items: center; gap: 8px;
    cursor: pointer;
    color: var(--accent);
}
.message .voice-play:hover { color: var(--accent-hover); }

.message.file-attachment {
    background: var(--bg-tertiary);
    cursor: pointer;
}
.message.file-attachment:hover { background: var(--bg-input); }
.file-icon { font-size: 24px; margin-right: 8px; }
.file-info { display: flex; flex-direction: column; }
.file-name { font-weight: 500; font-size: 13px; }
.file-size { font-size: 11px; color: var(--text-muted); }

/* ── Input area ── */
.chat-input {
    padding: 12px 20px 16px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    display: flex; align-items: flex-end; gap: 8px;
}
.chat-input textarea {
    flex: 1;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 10px 16px;
    font-family: var(--font);
    font-size: 14px;
    color: var(--text-primary);
    resize: none;
    max-height: 120px;
    outline: none;
    transition: border-color 0.2s;
}
.chat-input textarea:focus { border-color: var(--accent); }
.chat-input textarea::placeholder { color: var(--text-muted); }

.input-btn {
    width: 38px; height: 38px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--bg-input);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.15s;
    font-size: 16px; flex-shrink: 0;
}
.input-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}
.input-btn.send-btn {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}
.input-btn.send-btn:hover { background: var(--accent-hover); }
.input-btn.recording { background: var(--red); border-color: var(--red); color: #fff; animation: pulse 1s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.6; } }

.input-tools {
    display: flex; gap: 4px;
}

/* ── Disappearing timer selector ── */
.timer-selector {
    display: flex; align-items: center; gap: 4px;
    padding: 4px 8px;
    background: var(--bg-tertiary);
    border-radius: 16px;
    font-size: 11px;
    color: var(--text-muted);
    cursor: pointer;
    border: 1px solid var(--border);
}
.timer-selector.active { border-color: var(--orange); color: var(--orange); }
.timer-selector select {
    background: transparent; border: none;
    color: var(--text-primary); font-size: 11px;
    outline: none; cursor: pointer;
}
.timer-selector select option { background: var(--bg-secondary); }

/* ── No conversation splash ── */
.no-conversation {
    flex: 1;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    color: var(--text-muted);
    gap: 12px;
}
.no-conversation .big-icon { font-size: 64px; opacity: 0.3; }
.no-conversation h2 { font-size: 20px; font-weight: 500; color: var(--text-secondary); }
.no-conversation p { font-size: 14px; }

/* ── Status footer ── */
.status-bar {
    padding: 4px 16px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    display: flex; justify-content: space-between;
    font-size: 11px; color: var(--text-muted);
    font-family: var(--mono);
}
.status-bar .proxy-indicator { color: var(--orange); }
.status-bar .proxy-indicator.off { color: var(--text-muted); }

/* ── Scrollbar ── */
::-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-muted); }

/* ── Settings/Info popup ── */
.popup-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    z-index: 100;
    align-items: center; justify-content: center;
}
.popup-overlay.show { display: flex; }
.popup {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    max-width: 400px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}
.popup h3 { font-size: 16px; margin-bottom: 12px; }
.popup label { display: block; font-size: 12px; color: var(--text-secondary); margin-bottom: 4px; }
.popup input, .popup select {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    color: var(--text-primary);
    font-size: 13px;
    margin-bottom: 12px;
    outline: none;
}
.popup input:focus { border-color: var(--accent); }
.popup .btn-row { display: flex; gap: 8px; justify-content: flex-end; margin-top: 8px; }
.popup .btn {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
}
.popup .btn-primary { background: var(--accent); color: #fff; }
.popup .btn-primary:hover { background: var(--accent-hover); }
.popup .btn-secondary { background: var(--bg-tertiary); color: var(--text-primary); border: 1px solid var(--border); }
.popup .btn-secondary:hover { background: var(--bg-input); }