/* VILKA Chat Home — css/chat.css
   Only loaded by index.html. Does NOT affect the 7 niche landings.
   Design system: dark mode glassmorphism, Sora, neon accents.
*/

/* ============================================================
   RESET + BASE (scoped to chat page via body.chat-page)
   ============================================================ */
:root {
  --bg:       #0A0A0F;
  --bg2:      #0F0F1A;
  --surface:  #12121E;
  --purple:   #6C4EFF;
  --blue:     #4E8EFF;
  --green:    #00E5A0;
  --warning:  #FFB74D;
  --error:    #FF4E6A;
  --text:     #F5F5FF;
  --muted:    #8888AA;
  --dim:      #44445A;
  --glass:    rgba(255,255,255,0.04);
  --border:   rgba(255,255,255,0.08);
  --border-s: rgba(255,255,255,0.14);
  --grad:     linear-gradient(135deg,#6C4EFF 0%,#4E8EFF 100%);
  --gp:       0 0 40px rgba(108,78,255,0.25);
  --gg:       0 0 32px rgba(0,229,160,0.28);
  --rb:       14px;
  --sidebar-w: 280px;
  --nav-h:    62px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  height: 100%;
  height: 100dvh;
}

body.chat-page {
  font-family: 'Sora', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow: hidden;
  height: 100%;
  height: 100dvh;
  -webkit-font-smoothing: antialiased;
  /* Prevent pull-to-refresh on mobile */
  overscroll-behavior: none;
}

body.chat-page::before {
  content: '';
  position: fixed;
  inset: 0;
  background: radial-gradient(1200px 600px at 50% -10%, rgba(108,78,255,.18), transparent 60%);
  pointer-events: none;
  z-index: 0;
}

img, svg { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* ============================================================
   NAVBAR
   ============================================================ */
.chat-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 12px;
  background: rgba(10,10,15,0.82);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}

.chat-nav.scrolled {
  background: rgba(10,10,15,0.95);
}

/* Hamburger (mobile) */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 32px;
  height: 32px;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border-radius: 8px;
  transition: background 0.2s;
}
.nav-hamburger:hover { background: var(--glass); }
.nav-hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Logo */
.nav-logo {
  height: 38px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
  flex-shrink: 1;
  filter: drop-shadow(0 0 18px rgba(108,78,255,.35));
}

/* Niche chips */
.nav-chips {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  overflow-x: auto;
  scrollbar-width: none;
  min-width: 0;
}
.nav-chips::-webkit-scrollbar { display: none; }

.nv-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 13px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--muted);
  border: 1px solid transparent;
  transition: color 0.2s, background 0.2s, border-color 0.2s, transform 0.2s;
  white-space: nowrap;
  flex-shrink: 0;
}
.nv-chip:hover {
  color: var(--text);
  background: var(--glass);
  border-color: var(--border-s);
  transform: translateY(-1px);
}
.nv-chip.active {
  color: #fff;
  background: var(--grad);
  border-color: rgba(255,255,255,.18);
  box-shadow: 0 0 18px rgba(108,78,255,.35);
}

/* Nav right area */
.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  margin-left: auto;
}

.btn-demo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--rb);
  background: var(--glass);
  border: 1px solid var(--border-s);
  color: var(--text);
  backdrop-filter: blur(20px);
  transition: transform 0.2s, background 0.2s;
  white-space: nowrap;
}
.btn-demo:hover { transform: translateY(-1px); background: rgba(255,255,255,0.08); }

/* Language selector */
.lang-selector {
  position: relative;
}
.lang-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
}
.lang-btn:hover { color: var(--text); background: rgba(255,255,255,0.07); }

.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--bg2);
  border: 1px solid var(--border-s);
  border-radius: 14px;
  padding: 6px;
  min-width: 160px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.5);
  z-index: 300;
  display: none;
  backdrop-filter: blur(20px);
}
.lang-dropdown.open { display: block; animation: fadeIn 0.15s ease; }

.lang-opt {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 13px;
  color: var(--muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.lang-opt:hover { background: var(--glass); color: var(--text); }
.lang-opt.active { color: var(--text); background: rgba(108,78,255,0.12); }

/* ============================================================
   APP LAYOUT — full viewport
   Use 100dvh (dynamic viewport height) so mobile browser chrome
   doesn't overlap content. Fallback to 100vh for older browsers.
   ============================================================ */
.chat-app {
  display: flex;
  height: 100vh;
  height: 100dvh;
  padding-top: var(--nav-h);
  position: relative;
  z-index: 1;
}

/* ============================================================
   SIDEBAR
   ============================================================ */
.chat-sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: rgba(15,15,26,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: width 0.3s cubic-bezier(0.4,0,0.2,1), transform 0.3s cubic-bezier(0.4,0,0.2,1);
  position: relative;
  z-index: 10;
}

.chat-sidebar.collapsed {
  width: 0;
}

/* Sidebar inner scroll */
.sidebar-inner {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--dim) transparent;
  padding: 16px 0 80px;
}
.sidebar-inner::-webkit-scrollbar { width: 4px; }
.sidebar-inner::-webkit-scrollbar-track { background: transparent; }
.sidebar-inner::-webkit-scrollbar-thumb { background: var(--dim); border-radius: 4px; }

/* Sidebar toggle button */
.sidebar-toggle {
  position: absolute;
  right: -14px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg2);
  border: 1px solid var(--border-s);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 20;
  transition: background 0.2s, transform 0.2s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
}
.sidebar-toggle:hover { background: var(--surface); }
.sidebar-toggle svg {
  width: 14px;
  height: 14px;
  color: var(--muted);
  transition: transform 0.3s;
}
.chat-sidebar.collapsed .sidebar-toggle svg {
  transform: rotate(180deg);
}

/* Accordion sections */
.acc-section {
  border-bottom: 1px solid var(--border);
}

.acc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s;
  user-select: none;
  gap: 8px;
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(108,78,255,0.15);
}
.acc-header:hover { background: var(--glass); }
button.acc-header {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  outline: none;
  font-family: inherit;
}

.acc-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}
.acc-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: rgba(108,78,255,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.acc-icon svg { width: 14px; height: 14px; color: var(--purple); }

.acc-chevron {
  width: 16px;
  height: 16px;
  color: var(--muted);
  transition: transform 0.25s;
  flex-shrink: 0;
}
.acc-section.open .acc-chevron { transform: rotate(180deg); }

.acc-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.4,0,0.2,1);
}
.acc-section.open .acc-body { max-height: 600px; }

.acc-content {
  padding: 6px 16px 16px;
}

/* Sidebar bullets */
.sb-bullets {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.sb-bullet {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.4;
}
.sb-bullet::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--purple);
  flex-shrink: 0;
  margin-top: 5px;
}

/* Niche chips inside sidebar */
.sb-niches {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.sb-niche {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
  background: var(--glass);
  border: 1px solid var(--border);
  transition: color 0.2s, background 0.2s, border-color 0.2s, transform 0.2s;
  cursor: pointer;
  text-decoration: none;
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(108,78,255,0.15);
}
.sb-niche:hover {
  color: var(--text);
  background: rgba(108,78,255,0.12);
  border-color: rgba(108,78,255,0.35);
  transform: translateY(-1px);
}

/* Features grid 2x2 */
.sb-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.sb-feature {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.sf-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.sf-icon svg { width: 14px; height: 14px; }
.sf-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}

/* Pricing plans */
.sb-plans {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.sb-plan {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  transition: border-color 0.2s, background 0.2s;
}
.sb-plan.featured {
  background: rgba(108,78,255,0.08);
  border-color: rgba(108,78,255,0.35);
}
.sp-name {
  font-size: 12px;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 3px;
}
.sp-badge {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 999px;
  background: rgba(108,78,255,0.2);
  color: var(--purple);
}
.sp-price {
  font-size: 16px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}
.sp-price span {
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
}
.sp-desc {
  font-size: 11px;
  color: var(--muted);
  margin-top: 3px;
  line-height: 1.4;
}

/* Company section */
.sb-company {
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.6;
}
.sb-company a {
  color: var(--purple);
  text-decoration: underline;
  text-decoration-color: rgba(108,78,255,0.4);
  transition: color 0.2s;
}
.sb-company a:hover { color: var(--blue); }
.sb-links {
  display: flex;
  gap: 12px;
  margin-top: 10px;
  flex-wrap: wrap;
}

/* ============================================================
   CHAT MAIN
   ============================================================ */
.chat-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
}

/* Chat messages area */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 24px 16px 0;
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--dim) transparent;
}
.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--dim); border-radius: 4px; }

/* Limit width on large screens */
.chat-inner {
  max-width: 760px;
  margin: 0 auto;
  padding-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ============================================================
   WELCOME STATE
   ============================================================ */
.chat-welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 40px 16px 20px;
  gap: 20px;
}

.welcome-logo-capsule {
  padding: 12px 22px;
  border-radius: 999px;
  background: radial-gradient(ellipse at 30% 30%, #1A1A2A 0%, #060609 80%);
  display: flex; align-items: center; justify-content: center;
  position: relative;
  margin: 12px auto 18px;
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,0.08),
    0 0 40px rgba(255,78,200,0.4),
    0 0 70px rgba(108,78,255,0.25);
}
.welcome-logo-capsule::before {
  content: ''; position: absolute; inset: -2px;
  border-radius: 999px;
  background: conic-gradient(from 0deg, #FF4EC8, #6C4EFF, #00E5FF, #FF4EC8);
  z-index: -1; filter: blur(8px); opacity: 0.55;
  animation: vk-rotate 8s linear infinite;
}
@keyframes vk-rotate { to { transform: rotate(360deg); } }
.welcome-logo-capsule img {
  width: 110px;
  height: auto;
  display: block;
}

.welcome-bubble {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 18px 24px;
  font-size: 15px;
  color: var(--text);
  line-height: 1.6;
  max-width: 480px;
}

.welcome-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.suggestion-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  background: var(--glass);
  border: 1px solid var(--border-s);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  user-select: none;
}
.suggestion-chip:hover {
  background: rgba(108,78,255,0.12);
  border-color: rgba(108,78,255,0.4);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(108,78,255,0.2);
}
.suggestion-chip:active { transform: translateY(0); }

/* ============================================================
   NAVBAR — ENTER BUTTON
   ============================================================ */
.btn-enter {
  background: linear-gradient(135deg, #6C4EFF 0%, #4E8EFF 100%) !important;
  border-color: transparent !important;
  color: #fff !important;
  box-shadow: 0 0 24px rgba(108,78,255,0.35);
}
.btn-enter:hover {
  filter: brightness(1.1);
  background: linear-gradient(135deg, #6C4EFF 0%, #4E8EFF 100%) !important;
}

/* ============================================================
   ROLE ENTRY CARD
   ============================================================ */
.role-entry-card {
  margin-top: 24px;
  padding: 20px 20px 16px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  max-width: 480px;
  width: 100%;
}
.role-entry-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
  text-align: center;
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.role-entry-btns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.role-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 14px 10px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.04);
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
  cursor: pointer;
  text-decoration: none;
}
.role-btn:hover {
  transform: translateY(-3px);
}
.role-btn .role-ico {
  font-size: 26px;
  line-height: 1;
}
.role-btn .role-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  text-align: center;
  line-height: 1.3;
  word-break: keep-all;
  overflow-wrap: normal;
  hyphens: none;
}
/* Google button inside chat welcome */
.btn-google-chat {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.2s, transform 0.15s;
  cursor: pointer;
}
.btn-google-chat:hover { background: rgba(255,255,255,0.09); transform: translateY(-1px); }

.role-btn .role-name small {
  display: block;
  font-size: 10px;
  font-weight: 400;
  color: var(--muted);
  white-space: nowrap;
}
.role-owner {
  border-color: rgba(108,78,255,0.3);
  box-shadow: 0 0 20px rgba(108,78,255,0.1);
}
.role-owner:hover {
  border-color: rgba(108,78,255,0.6);
  box-shadow: 0 4px 24px rgba(108,78,255,0.25);
}
.role-customer {
  border-color: rgba(0,229,160,0.3);
  box-shadow: 0 0 20px rgba(0,229,160,0.08);
}
.role-customer:hover {
  border-color: rgba(0,229,160,0.6);
  box-shadow: 0 4px 24px rgba(0,229,160,0.2);
}
.role-provider {
  border-color: rgba(255,183,77,0.3);
  box-shadow: 0 0 20px rgba(255,183,77,0.08);
}
.role-provider:hover {
  border-color: rgba(255,183,77,0.6);
  box-shadow: 0 4px 24px rgba(255,183,77,0.2);
}
@media (max-width: 480px) {
  .role-entry-card { padding: 16px 14px 12px; }
  .role-btn { padding: 12px 8px; }
  .role-btn .role-ico { font-size: 22px; }
  .role-btn .role-name { font-size: 11px; }
}

/* Social auth providers — row compacta, más pequeña que role-btns */
.auth-divider {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 16px 0 12px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: rgba(255,255,255,0.07);
}
.auth-providers {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
}
.auth-btn {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.03);
  color: rgba(255,255,255,0.7);
  font-size: 11px;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s, border-color 0.2s, transform 0.15s, color 0.2s;
  cursor: pointer;
}
.auth-btn:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(255,255,255,0.2);
  color: #fff;
  transform: translateY(-1px);
}
.auth-btn svg { flex-shrink: 0; }
.auth-google:hover   { border-color: rgba(66,133,244,0.6);  box-shadow: 0 2px 12px rgba(66,133,244,0.18); }
.auth-microsoft:hover{ border-color: rgba(0,164,239,0.6);   box-shadow: 0 2px 12px rgba(0,164,239,0.18); }
.auth-apple:hover    { border-color: rgba(255,255,255,0.35); box-shadow: 0 2px 12px rgba(255,255,255,0.08); }
.auth-facebook:hover { border-color: rgba(24,119,242,0.6);  box-shadow: 0 2px 12px rgba(24,119,242,0.18); }
.auth-email:hover    { border-color: rgba(108,78,255,0.6);  box-shadow: 0 2px 12px rgba(108,78,255,0.18); }
.auth-phone:hover    { border-color: rgba(0,229,160,0.6);   box-shadow: 0 2px 12px rgba(0,229,160,0.15); }
@media (max-width: 480px) {
  .auth-btn { padding: 5px 10px; font-size: 10.5px; }
}

/* ============================================================
   MESSAGE BUBBLES
   ============================================================ */
.msg-row {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  animation: fadeInUp 0.25s ease both;
}
.msg-row.user { flex-direction: row-reverse; }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.msg-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--grad);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
  box-shadow: var(--gp);
  align-self: flex-end;
  padding: 4px;
  object-fit: contain;
}

.msg-bubble-wrap {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: min(75%, 520px);
}
.msg-row.user .msg-bubble-wrap { align-items: flex-end; }

.msg-bubble {
  padding: 12px 16px;
  border-radius: 18px;
  font-size: 14px;
  line-height: 1.55;
  position: relative;
}

/* Bot bubble */
.msg-bubble.bot {
  background: var(--glass);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
  color: var(--text);
}

/* User bubble */
.msg-bubble.user {
  background: rgba(108,78,255,0.18);
  border: 1px solid rgba(108,78,255,0.3);
  border-bottom-right-radius: 4px;
  color: var(--text);
}

/* Markdown inside bubbles */
.msg-bubble strong { font-weight: 700; color: var(--text); }
.msg-bubble em { font-style: italic; }
.msg-bubble ul { list-style: none; display: flex; flex-direction: column; gap: 4px; margin-top: 6px; padding-left: 0; }
.msg-bubble ul li { display: flex; align-items: flex-start; gap: 8px; }
.msg-bubble ul li::before { content: '•'; color: var(--purple); flex-shrink: 0; }
.msg-bubble br { display: block; content: ''; margin-top: 4px; }

/* CTA button after bot bubble */
.msg-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: var(--grad);
  border: none;
  cursor: pointer;
  transition: transform 0.2s, filter 0.2s;
  box-shadow: var(--gp);
  text-decoration: none;
}
.msg-cta:hover { transform: translateY(-2px); filter: brightness(1.1); }
.msg-cta svg { width: 14px; height: 14px; }

/* ============================================================
   TYPING INDICATOR
   ============================================================ */
.typing-row {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  animation: fadeInUp 0.2s ease both;
}
.typing-bubble {
  display: flex;
  gap: 5px;
  padding: 14px 18px;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 18px;
  border-bottom-left-radius: 4px;
}
.typing-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--purple);
  animation: typingBounce 1.2s ease-in-out infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.15s; }
.typing-dot:nth-child(3) { animation-delay: 0.3s; }
@keyframes typingBounce {
  0%,60%,100% { transform: translateY(0); opacity: 0.5; }
  30% { transform: translateY(-6px); opacity: 1; }
}

/* ============================================================
   INPUT BAR
   ============================================================ */
.chat-input-bar {
  flex-shrink: 0;
  padding: 12px 16px 16px;
  background: rgba(10,10,15,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border);
}

.chat-input-inner {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  align-items: flex-end;
  gap: 10px;
  background: var(--glass);
  border: 1px solid var(--border-s);
  border-radius: 18px;
  padding: 10px 10px 10px 16px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.chat-input-inner:focus-within {
  border-color: rgba(108,78,255,0.5);
  box-shadow: 0 0 0 3px rgba(108,78,255,0.1);
}

.chat-textarea {
  flex: 1;
  resize: none;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-family: 'Sora', system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.55;
  max-height: 100px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--dim) transparent;
  padding: 2px 0;
}
.chat-textarea::placeholder { color: var(--dim); }
.chat-textarea::-webkit-scrollbar { width: 3px; }
.chat-textarea::-webkit-scrollbar-thumb { background: var(--dim); border-radius: 3px; }

.send-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--grad);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  cursor: pointer;
  transition: transform 0.2s, filter 0.2s, opacity 0.2s;
  box-shadow: var(--gp);
  border: none;
}
.send-btn:hover:not(:disabled) { transform: scale(1.08); filter: brightness(1.1); }
.send-btn:active:not(:disabled) { transform: scale(0.96); }
.send-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.send-btn svg { width: 16px; height: 16px; color: #fff; }

.input-hint {
  text-align: center;
  font-size: 11px;
  color: var(--dim);
  margin-top: 7px;
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   SIDEBAR OVERLAY (mobile)
   ============================================================ */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 150;
  /* NO backdrop-filter — blurs touch events on iOS Safari */
  animation: fadeIn 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}
.sidebar-overlay.visible { display: block; }

/* ============================================================
   RESPONSIVE — mobile (< 720px)
   Full PWA-like experience: safe areas, touch targets, dvh.
   ============================================================ */
@media (max-width: 719px) {
  /* Two-row nav: row1=54px (hamburger+logo+entrar), row2=38px (scrollable chips) */
  :root { --nav-h: 92px; }

  .nav-hamburger { display: flex; }
  .btn-demo { display: none; }
  .btn-demo.btn-enter { display: flex; }
  .nav-logo { height: 28px; }

  /* Nav: two rows via flex-wrap */
  .chat-nav {
    flex-wrap: wrap;
    align-content: flex-start;
    padding: 0 12px;
    gap: 0;
    padding-top: env(safe-area-inset-top, 0px);
    height: calc(var(--nav-h) + env(safe-area-inset-top, 0px));
  }

  /* First row items: explicit 54px height */
  .nav-hamburger,
  .chat-nav > a,
  .nav-right {
    height: 54px;
    display: flex;
    align-items: center;
  }
  .nav-right {
    margin-left: auto;
    gap: 8px;
  }

  /* Second row: chips full-width scrollable */
  .nav-chips {
    display: flex !important;
    order: 100;
    flex-basis: 100%;
    width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    height: 38px;
    padding: 0 0 6px;
    gap: 6px;
    align-items: center;
    border-top: 1px solid rgba(255,255,255,0.06);
  }
  .nav-chips::-webkit-scrollbar { display: none; }
  .nav-chips .nv-chip {
    font-size: 11px;
    padding: 5px 10px;
    white-space: nowrap;
    flex-shrink: 0;
  }

  body.chat-page .chat-app {
    padding-top: calc(var(--nav-h) + env(safe-area-inset-top, 0px));
  }

  /* Sidebar: full-screen drawer on mobile */
  .chat-sidebar {
    position: fixed;
    top: calc(var(--nav-h) + env(safe-area-inset-top, 0px));
    left: 0;
    bottom: 0;
    width: min(var(--sidebar-w), 85vw) !important;
    transform: translateX(-100%);
    z-index: 160;
    transition: transform 0.3s cubic-bezier(0.4,0,0.2,1);
    padding-bottom: env(safe-area-inset-bottom, 0px);
    /* iOS: force GPU compositing to fix backdrop-filter touch bug */
    -webkit-transform: translateX(-100%);
    will-change: transform;
    pointer-events: auto;
  }
  .chat-sidebar.mobile-open {
    transform: translateX(0);
    -webkit-transform: translateX(0);
  }
  .chat-sidebar.mobile-open .sidebar-inner,
  .chat-sidebar.mobile-open .acc-section,
  .chat-sidebar.mobile-open .acc-header,
  .chat-sidebar.mobile-open .acc-body,
  .chat-sidebar.mobile-open a,
  .chat-sidebar.mobile-open button {
    pointer-events: auto !important;
    -webkit-tap-highlight-color: rgba(108,78,255,0.15);
  }
  .sidebar-toggle { display: none; }

  /* Chat layout fills full width */
  .chat-app { overflow: hidden; }
  .chat-messages { padding: 14px 10px 0; -webkit-overflow-scrolling: touch; }
  .chat-inner { padding-bottom: 16px; gap: 14px; }

  /* Input bar: stick above home indicator on iOS */
  .chat-input-bar {
    padding: 8px 10px;
    padding-bottom: max(12px, env(safe-area-inset-bottom, 12px));
  }

  /* Bigger touch targets */
  .msg-cta { padding: 11px 18px; font-size: 14px; }
  .send-btn { width: 44px; height: 44px; }
  .suggestion-chip { font-size: 13px; padding: 9px 14px; min-height: 40px; }

  /* Readable font sizes */
  .msg-bubble { font-size: 15px; line-height: 1.6; }
  .msg-bubble.user { font-size: 15px; }
  .welcome-bubble { font-size: 15px; padding: 14px 18px; }
  .welcome-title { font-size: 20px; }

  /* Bubble max-width: give more room on small screens */
  .msg-bubble-wrap { max-width: min(88%, 480px); }

  /* Typing indicator larger */
  .typing-dot { width: 9px; height: 9px; }
}

/* ============================================================
   RESPONSIVE — tablet (720px–1023px)
   ============================================================ */
@media (min-width: 720px) and (max-width: 1023px) {
  :root { --sidebar-w: 240px; }
  .nav-chips .nv-chip:nth-child(n+6) { display: none; }
}

/* ============================================================
   SCROLLBAR for sidebar collapsed state
   ============================================================ */
.chat-sidebar.collapsed .sidebar-inner {
  overflow: hidden;
}