/* ===================================================
   PULSE CHAT — Reusable Components
   =================================================== */

/* ===== ICON BUTTON ===== */
.icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  line-height: 1;
  color: var(--text-2);
  transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--dur-100) var(--easing-standard);
  flex-shrink: 0;
}
.icon-btn i { pointer-events: none; }
.icon-btn:hover { background: var(--bg-hover); color: var(--text-0); }
.icon-btn:active { background: var(--bg-active); transform: scale(calc(1 - (0.05 * var(--motion-level)))); }
.icon-btn:focus-visible { box-shadow: var(--focus-ring); }

/* ===== PRIMARY BUTTON ===== */
.btn-primary {
  padding: 10px 28px;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 600;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-1px); box-shadow: var(--accent-glow); }
.btn-primary:active { transform: scale(0.97); }

.btn-outline {
  padding: 10px 28px;
  border: 1.5px solid var(--accent);
  color: var(--accent);
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition-fast);
}
.btn-outline:hover { background: var(--accent-soft); }

.btn-danger {
  padding: 10px 28px;
  background: var(--danger);
  color: #fff;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 600;
}

/* ===== SEND BUTTON ===== */
.send-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
  transition: transform var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
}
.send-btn:hover { background: var(--accent-dark); box-shadow: var(--accent-glow); }
.send-btn:active { transform: scale(calc(1 - (0.08 * var(--motion-level)))); }
.send-btn:focus-visible { box-shadow: var(--focus-ring), var(--accent-glow); }

/* ===== FAB ===== */
.fab {
  position: absolute;
  bottom: 20px;
  right: 20px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(56,189,248,0.3);
  transition: transform 0.2s;
  z-index: 5;
}
.fab:hover { transform: scale(1.08); }

/* ===== BADGE ===== */
.badge {
  min-width: var(--unread-h);
  height: var(--unread-h);
  border-radius: calc(var(--unread-h) / 2);
  background: var(--unread);
  color: #fff;
  font-size: var(--unread-font);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--unread-pad);
}
.badge.muted { background: var(--unread-muted); }
.badge.success { background: var(--success); }
.badge.warning { background: var(--warning); }

/* ===== PIN ICON ===== */
.pin-icon { color: var(--text-2); font-size: 14px; transform: rotate(45deg); }

/* ===== CHECK ICONS ===== */
.check-icon { font-size: 14px; color: var(--text-2); }
.check-icon.read { color: var(--accent); }

/* ===== TOGGLE SWITCH ===== */
.theme-toggle {
  width: 44px;
  height: 24px;
  border-radius: 12px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  position: relative;
  cursor: pointer;
  transition: background var(--transition);
  flex-shrink: 0;
}
.theme-toggle::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  transition: transform var(--transition);
}
[data-theme="light"] .theme-toggle::after { transform: translateX(20px); }

/* ===== SEARCH BAR ===== */
.search-bar {
  padding: 0 12px 8px;
  display: none;
}
.search-bar.active { display: flex; }
.search-bar input {
  width: 100%;
  height: 38px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 20px;
  padding: 0 16px;
  font-size: 14px;
  transition: border-color var(--dur-200) var(--easing-standard), box-shadow var(--dur-200) var(--easing-standard);
}
.search-bar input:focus { border-color: var(--accent); }
.search-bar input:focus-visible { box-shadow: var(--focus-ring); }
.search-bar input::placeholder { color: var(--text-2); }

/* ===== FORM FIELD ===== */
.form-field { position: relative; }
.form-field label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
  margin-bottom: 6px;
}
.form-field input {
  width: 100%;
  height: 46px;
  background: var(--input-bg);
  border: 1.5px solid var(--input-border);
  border-radius: 10px;
  padding: 0 14px;
  font-size: 15px;
  color: var(--text-0);
  transition: border-color var(--dur-200) var(--easing-standard), box-shadow var(--dur-200) var(--easing-standard);
}
.form-field input:focus {
  border-color: var(--accent);
  box-shadow: var(--focus-ring);
}
.form-field input::placeholder { color: var(--text-2); }

/* ===== CONTEXT MENU ===== */
.context-menu {
  position: fixed;
  background: var(--bg-2);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 6px 0;
  z-index: 200;
  min-width: 200px;
  animation: fadeScale var(--dur-150) var(--easing-standard);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
}
.context-menu-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 16px;
  font-size: 14px;
  cursor: pointer;
  transition: background-color var(--dur-100) var(--easing-standard), transform var(--dur-100) var(--easing-standard);
}
.context-menu-item:hover { background: var(--bg-hover); }
.context-menu-item:active { transform: scale(calc(1 - (0.02 * var(--motion-level)))); }
.context-menu-item i { width: 20px; text-align: center; color: var(--menu-icon); font-size: 16px; }
.context-menu-item.danger { color: var(--danger); }
.context-menu-item.danger i { color: var(--danger); }

/* ===== CARD ===== */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(10px);
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }

/* ===== SECTION TITLE ===== */
.section-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  padding: 0 8px 12px;
}

/* ===== STAT ROW ===== */
.stat-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--divider);
}
.stat-row:last-child { border-bottom: none; }
.stat-label { font-size: 14px; color: var(--text-2); }
.stat-value { font-size: 15px; font-weight: 600; }

/* ===== EMPTY STATE ===== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-2);
  gap: 16px;
  z-index: 1;
  position: relative;
}
.empty-state i { font-size: 72px; opacity: 0.12; }
.empty-state span { font-size: 16px; opacity: 0.5; }

/* ══════════════════════════════════════════════════
   GLASSMORPHISM — Жидкое стекло (из tweb-master)
   ══════════════════════════════════════════════════ */

/* === Glass card — базовый элемент === */
.glass {
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

/* === Floating glass panel (меню, тултипы) === */
.glass-panel {
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  background: var(--glass-bg-menu);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
}

/* === Tooltip — из _tooltip.scss tweb === */
.tooltip {
  position: fixed;
  padding: 8px 12px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-0);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  background: var(--glass-bg-tooltip);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  pointer-events: none;
  z-index: 999;
  max-width: 220px;
  transition: opacity var(--transition-standard-in);
}

/* === Icon button с frosted ripple (из tweb _button.scss) === */
.icon-btn {
  position: relative;
  overflow: hidden;
  border-radius: 50% !important;
  transition:
    color var(--transition-standard-in),
    opacity var(--transition-standard-in),
    background var(--transition-standard-in);
}
.icon-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: currentColor;
  opacity: 0;
  transition: opacity var(--transition-standard-in);
}
.icon-btn:hover::before { opacity: var(--hover-alpha); }

/* === Liquid buttons and cards === */
.btn-primary,
.send-btn,
.fab {
  position: relative;
  overflow: hidden;
  border: 1px solid color-mix(in oklab, var(--accent) 70%, #ffffff 30%);
}

.btn-primary::before,
.send-btn::before,
.fab::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: var(--liquid-sheen);
}

.card,
.context-menu,
.glass-panel,
.tooltip {
  box-shadow: var(--glass-shadow), var(--liquid-inner-shadow);
}

/* === Primary button — ripple + glow === */
.btn-primary {
  position: relative;
  overflow: hidden;
  transition:
    background var(--transition-standard-in),
    transform var(--transition-standard-in),
    box-shadow var(--transition-standard-in);
}
.btn-primary:hover {
  box-shadow: 0 4px 16px rgba(106,178,242,0.25);
}
.btn-primary:active {
  transform: scale(0.96);
  transition-duration: .08s;
}

/* === Glass modal backdrop === */
.modal-backdrop {
  position: fixed;
  inset: 0;
  -webkit-backdrop-filter: blur(6px) brightness(0.6) saturate(0.8);
  backdrop-filter: blur(6px) brightness(0.6) saturate(0.8);
  background: rgba(0,0,0,0.35);
  z-index: 300;
  transition: opacity var(--transition-standard-in);
}

/* === Glass modal content === */
.modal-content {
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  background: var(--glass-bg-popup);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-lg);
}

/* === Frosted sidebar header при скролле === */
.sidebar-header {
  transition:
    background var(--transition-standard-in),
    border-color var(--transition-standard-in),
    backdrop-filter var(--transition-standard-in);
}
.sidebar-header.scrolled {
  -webkit-backdrop-filter: var(--glass-blur-sm);
  backdrop-filter: var(--glass-blur-sm);
  background: var(--glass-bg);
  border-bottom: 1px solid var(--glass-border);
}

/* === Chat header frosted === */
.chat-header {
  transition:
    background var(--transition-standard-in),
    border-color var(--transition-standard-in);
}
.chat-header.scrolled {
  -webkit-backdrop-filter: var(--glass-blur-sm);
  backdrop-filter: var(--glass-blur-sm);
  background: var(--glass-bg);
  border-bottom: 1px solid var(--glass-border);
}

/* === Glass FAB === */
.fab {
  -webkit-backdrop-filter: var(--glass-blur-sm);
  backdrop-filter: var(--glass-blur-sm);
  box-shadow: 0 4px 24px rgba(0,0,0,0.25), 0 0 0 1px var(--glass-border);
  transition:
    transform var(--transition-standard-in),
    box-shadow var(--transition-standard-in);
}
.fab:hover {
  transform: scale(1.08);
  box-shadow: 0 8px 32px rgba(0,0,0,0.35), 0 0 0 1px var(--glass-border);
}

/* === Frosted slide-menu === */
.slide-menu {
  -webkit-backdrop-filter: var(--glass-blur-lg);
  backdrop-filter: var(--glass-blur-lg);
  background: var(--glass-bg-menu);
  border-right: 1px solid var(--glass-border);
}

/* === Glass context menu (усиленный) === */
.context-menu {
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  background: var(--glass-bg-menu);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

/* === Ripple element (JS-generated) === */
.rp-overflow { overflow: hidden !important; }
.rp {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.rp::after {
  content: '';
  position: absolute;
  inset: 0;
  background: currentColor;
  opacity: 0;
  transition: opacity var(--transition-standard-in);
  border-radius: inherit;
}
.rp:hover::after { opacity: var(--hover-alpha); }
.rp:active::after { opacity: calc(var(--hover-alpha) * 2); transition-duration: .05s; }

/* === Skeleton loading === */
.skeleton-line {
  border-radius: 4px;
  height: 14px;
  background: linear-gradient(
    90deg,
    var(--bg-2) 25%,
    var(--bg-3) 50%,
    var(--bg-2) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.4s ease-in-out infinite;
}

/* === Chat hero glass orbs === */
.glass-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px) saturate(2);
  pointer-events: none;
  opacity: 0.18;
  animation: orbFloat 12s ease-in-out infinite;
}
.glass-orb-1 {
  width: 300px; height: 300px;
  background: var(--accent);
  top: -80px; right: -40px;
  animation-delay: 0s;
}
.glass-orb-2 {
  width: 200px; height: 200px;
  background: var(--gradient-accent);
  bottom: 60px; left: -60px;
  animation-delay: -4s;
}
.glass-orb-3 {
  width: 150px; height: 150px;
  background: var(--success);
  top: 50%; left: 50%;
  animation-delay: -8s;
  opacity: 0.1;
}