/* ==========================================================================
   Sovereign Telegram Web Client — design system
   Variables follow Telegram Web K palette so the bundle feels native.
   Dark/light themes are switched by toggling `data-theme="dark"` on <html>.
   ========================================================================== */

:root {
  --tg-blue: #3390ec;
  --tg-blue-dark: #2b7bc4;
  --tg-green: #4dcd5e;
  --tg-red: #ee686c;
  --tg-orange: #ff9500;

  --tg-bg: #ffffff;
  --tg-light-bg: #f4f4f5;
  --tg-light-gray: #e9ebee;
  --tg-border: #e4e4e7;

  --text-main: #0f0f0f;
  --tg-text-secondary: #707579;

  --bubble-in: #ffffff;
  --bubble-out: #effdde;
  --bubble-shadow: 0 1px 2px rgba(16, 35, 47, 0.15);

  --chat-pattern-bg: #c4d4dc;

  --sidebar-width: 320px;
  --header-height: 56px;
  --footer-height: 56px;

  --transition-fast: 120ms cubic-bezier(0.2, 0.8, 0.2, 1);
  --transition: 200ms cubic-bezier(0.2, 0.8, 0.2, 1);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

[data-theme="dark"] {
  --tg-bg: #212121;
  --tg-light-bg: #181818;
  --tg-light-gray: #2c2c2c;
  --tg-border: #2c2c2c;

  --text-main: #ffffff;
  --tg-text-secondary: #aaaaaa;

  --bubble-in: #212121;
  --bubble-out: #766ac8;
  --bubble-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);

  --chat-pattern-bg: #1a1a1a;
}

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

html, body {
  height: 100%;
  font-family: var(--font);
  font-size: 15px;
  color: var(--text-main);
  background: var(--tg-light-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

button { font-family: inherit; }

/* ==========================================================================
   Login screen
   ========================================================================== */

.login-screen {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(1200px 600px at 20% -10%, rgba(51, 144, 236, 0.18), transparent 60%),
    radial-gradient(900px 600px at 110% 110%, rgba(118, 106, 200, 0.18), transparent 60%),
    var(--tg-light-bg);
}

.login-box {
  width: min(380px, calc(100vw - 32px));
  background: var(--tg-bg);
  border: 1px solid var(--tg-border);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
  box-shadow: 0 24px 64px rgba(16, 35, 47, 0.08);
}

.logo-animation {
  width: 96px; height: 96px;
  margin: 0 auto 16px;
  background: linear-gradient(180deg, #50a8eb 0%, #408ddb 100%);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  animation: float 3s ease-in-out infinite;
  box-shadow: 0 12px 32px rgba(51, 144, 236, 0.4);
}
.logo-animation svg { width: 64px; height: 64px; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.login-box input {
  width: 100%;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--tg-border);
  background: var(--tg-light-bg);
  color: var(--text-main);
  font-size: 15px;
  outline: none;
  transition: border-color var(--transition);
}
.login-box input:focus { border-color: var(--tg-blue); }

.primary-btn {
  width: 100%;
  padding: 14px;
  background: var(--tg-blue);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-weight: 500;
  font-size: 15px;
  cursor: pointer;
  transition: background var(--transition);
}
.primary-btn:hover { background: var(--tg-blue-dark); }
.primary-btn:disabled { background: var(--tg-text-secondary); cursor: not-allowed; }

#login-status {
  margin-top: 16px;
  font-size: 13px;
  color: var(--tg-text-secondary);
  min-height: 18px;
}
#login-status.error { color: var(--tg-red); }

/* ==========================================================================
   App shell
   ========================================================================== */

.app-container {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
  background: var(--tg-bg);
}

/* ==========================================================================
   Sidebar
   ========================================================================== */

.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--tg-border);
  background: var(--tg-bg);
}

.sidebar-header {
  height: var(--header-height);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  border-bottom: 1px solid var(--tg-border);
}
.sidebar-header > div:first-child { padding: 6px; border-radius: 50%; transition: background var(--transition); }
.sidebar-header > div:first-child:hover { background: var(--tg-light-gray); }

.search-container {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--tg-light-gray);
  border-radius: 18px;
  padding: 8px 12px;
}
.search-container input {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  font-size: 14px;
  color: var(--text-main);
}

.section-tabs {
  display: flex;
  gap: 4px;
  padding: 8px 12px 0;
  border-bottom: 1px solid var(--tg-border);
}
.section-tabs .tab {
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--tg-text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}
.section-tabs .tab.active { color: var(--tg-blue); border-bottom-color: var(--tg-blue); }

#contact-list {
  flex: 1;
  overflow-y: auto;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  cursor: pointer;
  transition: background var(--transition-fast);
  border-radius: 12px;
  margin: 2px 6px;
}
.contact-item:hover { background: var(--tg-light-gray); }
.contact-item.active { background: var(--tg-blue); color: #fff; }
.contact-item.active .contact-status,
.contact-item.active .contact-preview { color: rgba(255, 255, 255, 0.85); }

.avatar {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--tg-blue), #50a8eb);
  color: #fff;
  font-weight: 600;
  font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  position: relative;
  text-transform: uppercase;
}
.avatar.small { width: 40px; height: 40px; font-size: 16px; }
.avatar[data-color="1"] { background: linear-gradient(135deg, #ff885e, #ff516a); }
.avatar[data-color="2"] { background: linear-gradient(135deg, #82b1ff, #665fff); }
.avatar[data-color="3"] { background: linear-gradient(135deg, #a0de7e, #54cb68); }
.avatar[data-color="4"] { background: linear-gradient(135deg, #e0a2f3, #d669ed); }
.avatar[data-color="5"] { background: linear-gradient(135deg, #ffcd6a, #ffa85c); }

.avatar .online-dot {
  position: absolute;
  bottom: 0; right: 0;
  width: 12px; height: 12px;
  background: var(--tg-green);
  border: 2px solid var(--tg-bg);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(77, 205, 94, 0.45); }
  50%      { box-shadow: 0 0 0 6px rgba(77, 205, 94, 0); }
}

.contact-info {
  flex: 1;
  min-width: 0;
}
.contact-name {
  font-weight: 500;
  font-size: 15px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.contact-status, .contact-preview {
  font-size: 13px;
  color: var(--tg-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-footer {
  padding: 12px;
  border-top: 1px solid var(--tg-border);
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: stretch;
}
.sidebar-footer button,
.sidebar-footer a {
  display: block;
  text-align: center;
  background: none;
  border: 1px solid var(--tg-border);
  color: var(--tg-blue);
  cursor: pointer;
  font-weight: 500;
  font-size: 13px;
  text-decoration: none;
  padding: 10px;
  border-radius: 10px;
  transition: background var(--transition);
}
.sidebar-footer button:hover,
.sidebar-footer a:hover { background: var(--tg-light-gray); }

/* ==========================================================================
   Chat main column
   ========================================================================== */

.chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  background:
    linear-gradient(rgba(196, 212, 220, 0.7), rgba(196, 212, 220, 0.7)),
    repeating-linear-gradient(45deg, rgba(255,255,255,0.05) 0 12px, transparent 12px 24px);
  background-color: var(--chat-pattern-bg);
}
[data-theme="dark"] .chat-main {
  background:
    linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.4)),
    repeating-linear-gradient(45deg, rgba(255,255,255,0.02) 0 12px, transparent 12px 24px);
  background-color: var(--chat-pattern-bg);
}

#no-chat-selected {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
#no-chat-selected > div {
  background: rgba(0, 0, 0, 0.35);
  color: #fff;
  padding: 10px 18px;
  border-radius: 16px;
  font-size: 14px;
}

.chat-header {
  height: var(--header-height);
  flex-shrink: 0;
  background: var(--tg-bg);
  border-bottom: 1px solid var(--tg-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  gap: 12px;
}
.chat-header .chat-info {
  display: flex; align-items: center; gap: 12px; min-width: 0;
}
.chat-title {
  font-size: 16px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.chat-status { font-size: 13px; color: var(--tg-text-secondary); }
.chat-status.online { color: var(--tg-blue); }

/* Call buttons */

.call-btn {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  color: var(--tg-text-secondary);
  transition: background var(--transition), color var(--transition);
}
.call-btn:hover { background: var(--tg-light-gray); color: var(--tg-blue); }

.dropdown-wrapper { position: relative; }
.tg-dropdown {
  position: absolute;
  top: 44px; right: 0;
  min-width: 200px;
  background: var(--tg-bg);
  border: 1px solid var(--tg-border);
  border-radius: 12px;
  box-shadow: 0 12px 32px rgba(16, 35, 47, 0.12);
  display: none;
  flex-direction: column;
  z-index: 50;
  overflow: hidden;
  animation: dropdown-in var(--transition);
}
.dropdown-wrapper.open .tg-dropdown { display: flex; }
@keyframes dropdown-in {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}
.dropdown-item {
  padding: 10px 16px;
  cursor: pointer;
  font-size: 14px;
  transition: background var(--transition-fast);
}
.dropdown-item:hover { background: var(--tg-light-gray); }

/* Messages */

.message-container {
  flex: 1;
  overflow-y: auto;
  padding: 16px 12% 16px 12%;
  display: flex;
  flex-direction: column;
  gap: 4px;
  scroll-behavior: smooth;
}
@media (max-width: 900px) { .message-container { padding: 12px 6px; } }

.bubble {
  max-width: 70%;
  padding: 8px 12px;
  border-radius: 12px;
  background: var(--bubble-in);
  color: var(--text-main);
  box-shadow: var(--bubble-shadow);
  word-break: break-word;
  white-space: pre-wrap;
  position: relative;
  animation: bubble-in 200ms ease-out;
}
.bubble.outgoing {
  align-self: flex-end;
  background: var(--bubble-out);
}
.bubble.incoming { align-self: flex-start; }
.bubble .meta {
  display: flex;
  gap: 6px;
  align-items: center;
  font-size: 11px;
  color: var(--tg-text-secondary);
  margin-top: 4px;
  justify-content: flex-end;
}
.bubble .meta .ack-tick { font-size: 13px; line-height: 1; color: var(--tg-blue); }

@keyframes bubble-in {
  from { opacity: 0; transform: translateY(6px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.day-divider {
  align-self: center;
  margin: 10px 0;
  padding: 4px 12px;
  background: rgba(0, 0, 0, 0.35);
  color: #fff;
  border-radius: 12px;
  font-size: 12px;
}

/* Composer */

.chat-footer {
  flex-shrink: 0;
  background: var(--tg-bg);
  border-top: 1px solid var(--tg-border);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  min-height: var(--footer-height);
}
.chat-footer > div { display: flex; align-items: center; padding: 8px; border-radius: 50%; transition: background var(--transition-fast); }
.chat-footer > div:hover { background: var(--tg-light-gray); }

.message-input-wrapper {
  flex: 1;
  background: var(--tg-light-bg);
  border-radius: 22px;
  display: flex;
  align-items: center;
  padding: 0 14px;
  flex-direction: row !important;
}
.message-input-wrapper input {
  flex: 1;
  padding: 12px 0;
  border: none;
  background: transparent;
  outline: none;
  font-size: 15px;
  color: var(--text-main);
}

/* ==========================================================================
   Call modals
   ========================================================================== */

.call-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fade-in var(--transition);
}
.call-content {
  position: relative;
  width: min(800px, 96vw);
  height: min(600px, 90vh);
  border-radius: 16px;
  overflow: hidden;
  background: #000;
}
@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.group-call-modal {
  position: fixed;
  inset: 0;
  background: #000;
  display: flex;
  flex-direction: column;
  z-index: 1000;
}
.group-call-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: #fff;
}
.iframe-container { flex: 1; display: flex; }
.iframe-container iframe { flex: 1; border: 0; }

/* ==========================================================================
   Sovereign features grid
   ========================================================================== */

#sov-modal .call-content {
  padding: 24px;
  background: var(--tg-bg);
  height: auto;
  width: min(420px, 92vw);
  max-height: 80vh;
  overflow-y: auto;
}
#sov-modal h3 { margin-bottom: 16px; text-align: center; font-weight: 600; }
#sov-buttons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}
#sov-buttons .sov-btn {
  background: var(--tg-light-bg);
  color: var(--text-main);
  border: 1px solid var(--tg-border);
  border-radius: 10px;
  padding: 14px 10px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
}
#sov-buttons .sov-btn:hover {
  background: var(--tg-light-gray);
  border-color: var(--tg-blue);
}

#close-sov-modal {
  margin-top: 16px;
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  background: var(--tg-light-gray);
  color: var(--text-main);
}

/* ==========================================================================
   Theme toggle
   ========================================================================== */

.theme-toggle {
  position: fixed;
  top: 12px;
  right: 12px;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--tg-bg);
  border: 1px solid var(--tg-border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 100;
  color: var(--tg-text-secondary);
  transition: transform var(--transition);
}
.theme-toggle:hover { transform: rotate(20deg); color: var(--tg-blue); }

/* ==========================================================================
   Toast / emoji picker / reply chip / profile chip (features.js)
   ========================================================================== */

.toast {
  position: fixed;
  left: 50%;
  bottom: 72px;
  transform: translateX(-50%);
  background: rgba(0,0,0,0.78);
  color: #fff;
  padding: 10px 18px;
  border-radius: 18px;
  font-size: 13px;
  z-index: 1100;
  opacity: 1;
  transition: opacity 400ms ease, transform 400ms ease;
}
.toast.error { background: var(--tg-red); }
.toast.out   { opacity: 0; transform: translateX(-50%) translateY(8px); }

.emoji-picker-grid {
  position: absolute !important;
  bottom: var(--footer-height);
  left: 12px;
  display: none;
  background: var(--tg-bg);
  border: 1px solid var(--tg-border);
  border-radius: 12px;
  padding: 8px;
  grid-template-columns: repeat(8, 1fr);
  gap: 4px;
  width: 320px;
  max-height: 220px;
  overflow-y: auto;
  z-index: 80;
  box-shadow: 0 12px 32px rgba(16,35,47,0.12);
}
.emoji-picker-grid .emoji {
  cursor: pointer;
  font-size: 22px;
  text-align: center;
  padding: 4px;
  border-radius: 6px;
  transition: background var(--transition-fast);
}
.emoji-picker-grid .emoji:hover { background: var(--tg-light-gray); }

.reply-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 6px 12px 0;
  background: var(--tg-light-bg);
  border-left: 3px solid var(--tg-blue);
  border-radius: 8px;
  padding: 6px 10px;
}

.profile-chip {
  cursor: pointer;
  display: flex;
  align-items: center;
}
.profile-chip:hover .avatar { box-shadow: 0 0 0 2px var(--tg-blue); }

/* ==========================================================================
   Compatibility classes for app.js (don't rename, app.js queries these names)
   ========================================================================== */

/* Online dot driven by `.avatar.online` (set by renderRoster) */
.avatar.online::after {
  content: "";
  position: absolute;
  bottom: 0; right: 0;
  width: 12px; height: 12px;
  background: var(--tg-green);
  border: 2px solid var(--tg-bg);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

/* app.js renders messages as `.message.sent` / `.message.received` */
.message {
  max-width: 70%;
  padding: 8px 12px;
  border-radius: 12px;
  background: var(--bubble-in);
  color: var(--text-main);
  box-shadow: var(--bubble-shadow);
  word-break: break-word;
  white-space: pre-wrap;
  margin-bottom: 4px;
  position: relative;
  animation: bubble-in 200ms ease-out;
}
.message.sent {
  align-self: flex-end;
  background: var(--bubble-out);
}
.message.received { align-self: flex-start; }
.msg-content { margin-bottom: 2px; }
.msg-time {
  font-size: 11px;
  color: var(--tg-text-secondary);
  text-align: right;
  margin-top: 2px;
}

/* Roster preview line */
.last-message {
  font-size: 13px;
  color: var(--tg-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}
.contact-info { flex: 1; min-width: 0; }
.contact-name { font-weight: 500; font-size: 15px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ==========================================================================
   Responsive: stack sidebar over chat on small screens
   ========================================================================== */

@media (max-width: 740px) {
  .app-container { position: relative; }
  .sidebar {
    position: absolute;
    inset: 0;
    width: 100%;
    z-index: 10;
    transition: transform var(--transition);
  }
  .chat-main { width: 100%; }
  body[data-chat-open="true"] .sidebar { transform: translateX(-100%); }
}

/* -----------------------------------------------------------------
   Sovereign-bundle Telegram-style features (sovereign.js)
   - Stories carousel above the contact list
   - Polls + Stickers compose modals
   - Saved Messages emphasis in the sidebar
   ----------------------------------------------------------------- */

.sov-stories-strip {
  display: flex;
  flex-direction: row;
  gap: 8px;
  overflow-x: auto;
  padding: 6px 8px;
  scrollbar-width: thin;
}
.sov-story {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 60px;
  cursor: pointer;
  flex: 0 0 auto;
}
.sov-story-ring {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f58529 0%, #dd2a7b 50%, #8134af 100%);
  padding: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.sov-story-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--tg-light-bg, #f3f3f3);
  color: var(--tg-blue, #2b7bc4);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}
.sov-story-name {
  margin-top: 2px;
  font-size: 11px;
  text-align: center;
  max-width: 60px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sov-modal-card {
  background: var(--tg-bg);
  width: min(420px, 92vw);
  height: auto;
  max-height: 90vh;
  padding: 24px;
  overflow-y: auto;
  border-radius: 14px;
}
.sov-input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--tg-border);
  background: var(--tg-light-bg);
  color: var(--text-main);
  margin-bottom: 10px;
}
.sov-modal-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}
.sov-modal-actions button {
  flex: 1;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--tg-border);
  background: var(--tg-light-bg);
  color: var(--text-main);
  cursor: pointer;
}

.sov-pack-strip {
  display: flex;
  flex-direction: row;
  gap: 6px;
  overflow-x: auto;
  margin-bottom: 8px;
}
.sov-pack-chip {
  flex: 0 0 auto;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--tg-light-bg);
  color: var(--text-main);
  font-size: 12px;
  cursor: pointer;
}
.sov-sticker-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  max-height: 280px;
  overflow-y: auto;
}
.sov-sticker-cell {
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--tg-light-bg);
  border-radius: 8px;
  cursor: pointer;
}
.sov-sticker-cell img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}
.sov-sticker-emoji { font-size: 28px; }
.sov-empty {
  text-align: center;
  padding: 18px;
  color: var(--tg-text-secondary);
  font-size: 13px;
}

.sov-composer-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  font-size: 18px;
  color: var(--tg-text-secondary);
}

.saved-messages-item .contact-name,
.saved-messages-item .name {
  font-weight: 600;
  color: var(--tg-blue, #2b7bc4);
}
