/* Design tokens: colors, typography, motion */
:root {
  --ak-bg-dark: #020617;
  --ak-bg-light: #f9fafb;

  --ak-surface: rgba(15, 23, 42, 0.55);
  --ak-surface-soft: rgba(15, 23, 42, 0.35);
  --ak-border: rgba(148, 163, 184, 0.45);

  /* Premium orange system based on #f70 */
  --ak-primary: #ff7a1a;
  --ak-primary-dark: #e85b00;
  --ak-primary-soft: rgba(255, 122, 26, 0.22);

  --ak-accent: #38bdf8;
  --ak-accent-purple: #a855f7;

  --ak-muted: #9ca3af;
  --ak-text-main: #e5e7eb;
  --ak-text-soft: #9ca3af;
  --ak-text-strong: #f9fafb;

  --ak-error: #ef4444;

  /* Motion system */
  --ak-ease-standard: cubic-bezier(0.4, 0.0, 0.2, 1);
  --ak-duration-fast: 150ms;
  --ak-duration-med: 250ms;
  --ak-duration-slow: 400ms;
}

/* Base reset + background */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display",
    "Helvetica Neue", Helvetica, Arial, sans-serif;
  background:
    radial-gradient(circle at 0% 0%, #111827 0%, transparent 45%),
    radial-gradient(circle at 100% 0%, #0f172a 0%, transparent 45%),
    radial-gradient(circle at 0% 100%, #020617 0%, transparent 45%),
    radial-gradient(circle at 100% 100%, #020617 0%, #000 65%);
  color: var(--ak-text-main);
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: stretch;
  padding: 1.5rem;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background var(--ak-duration-slow) var(--ak-ease-standard);
}

/* Glass shell + animated glow */
#container {
  position: relative;
  width: 100%;
  max-width: 1100px;          /* bigger, more room for chat */
  max-height: 760px;
  background: var(--ak-surface);
  backdrop-filter: blur(28px) saturate(190%);
  border: 1px solid var(--ak-border);
  border-radius: 26px;
  box-shadow:
    0 32px 90px rgba(0, 0, 0, 0.78),
    0 0 0 1px rgba(15, 23, 42, 0.9);
  overflow: hidden;
  text-align: center;
  transition:
    transform var(--ak-duration-slow) var(--ak-ease-standard),
    box-shadow var(--ak-duration-slow) var(--ak-ease-standard),
    background var(--ak-duration-slow) var(--ak-ease-standard),
    border-color var(--ak-duration-slow) var(--ak-ease-standard);
  transform-style: preserve-3d;
}

/* Glow */
#container::before {
  content: "";
  position: absolute;
  top: -4%;
  left: -4%;
  width: 108%;
  height: 108%;
  z-index: -1;
  background:
    radial-gradient(circle at 0% 0%, rgba(255, 122, 26, 0.6), transparent 55%),
    radial-gradient(circle at 100% 100%, rgba(56, 189, 248, 0.55), transparent 55%),
    radial-gradient(circle at 0% 100%, rgba(168, 85, 247, 0.4), transparent 55%);
  background-size: 200% 200%;
  border-radius: 32px;
  filter: blur(42px);
  animation: glowShift 14s var(--ak-ease-standard) infinite alternate;
  pointer-events: none;
}

/* Status toast stack */
#system-stream {
  position: absolute;
  top: 1rem;
  left: 50%;
  transform: translateX(-50%);
  width: min(92%, 760px);
  max-height: 168px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
  padding-right: 0.25rem;
  z-index: 5;
}

#status-stream {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.status-item {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  position: relative;
  padding: 0.6rem 1rem;
  border-radius: 16px;
  background: rgba(2, 6, 23, 0.55);
  border: 1px solid rgba(248, 250, 252, 0.08);
  box-shadow: 0 18px 38px rgba(2, 6, 23, 0.55);
  font-size: 0.9rem;
  color: var(--ak-text-main);
  transition: background var(--ak-duration-med) var(--ak-ease-standard),
    border-color var(--ak-duration-med) var(--ak-ease-standard),
    transform var(--ak-duration-med) var(--ak-ease-standard),
    opacity var(--ak-duration-slow) var(--ak-ease-standard);
  animation: statusIn 280ms var(--ak-ease-standard);
}

.status-item::before {
  content: "";
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 999px;
  background: var(--ak-primary);
  box-shadow: 0 0 12px var(--ak-primary);
}

.status-item.status-progress::before {
  background: var(--ak-accent);
  box-shadow: 0 0 12px var(--ak-accent);
}

.status-item.status-success::before {
  background: #22c55e;
  box-shadow: 0 0 12px rgba(34, 197, 94, 0.75);
}

.status-item.status-warning::before {
  background: #fbbf24;
  box-shadow: 0 0 12px rgba(251, 191, 36, 0.75);
}

.status-item.status-error::before {
  background: var(--ak-error);
  box-shadow: 0 0 12px rgba(239, 68, 68, 0.8);
}

.status-item.status-progress {
  background: rgba(15, 23, 42, 0.7);
  border-color: rgba(56, 189, 248, 0.25);
}

.status-item.status-success {
  background: rgba(15, 118, 110, 0.55);
  border-color: rgba(34, 197, 94, 0.35);
}

.status-item.status-warning {
  background: rgba(120, 53, 15, 0.65);
  border-color: rgba(251, 191, 36, 0.4);
}

.status-item.status-error {
  background: rgba(127, 29, 29, 0.7);
  border-color: rgba(239, 68, 68, 0.45);
}

.status-item > span:first-child {
  flex: 1 1 auto;
  min-width: 0;
}

.status-item code {
  background: rgba(2, 6, 23, 0.35);
  padding: 0.1rem 0.4rem;
  border-radius: 8px;
  font-family: "SF Mono", "Menlo", monospace;
  letter-spacing: 0.06em;
  color: #fefce8;
}

.status-meta {
  flex-basis: 100%;
  font-size: 0.78rem;
  color: var(--ak-text-soft);
  letter-spacing: 0.02em;
  margin-top: 0.15rem;
}

.status-action {
  margin-left: auto;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.92);
  color: #0b1120;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition:
    transform var(--ak-duration-fast) var(--ak-ease-standard),
    box-shadow var(--ak-duration-fast) var(--ak-ease-standard),
    background var(--ak-duration-fast) var(--ak-ease-standard);
}

.status-action:hover {
  transform: translateY(-1px) scale(1.01);
  box-shadow: 0 10px 25px rgba(255, 255, 255, 0.22);
}

.status-action:focus-visible {
  outline: 2px solid var(--ak-primary);
  outline-offset: 2px;
}

.status-item .status-close {
  position: absolute;
  top: 0.35rem;
  right: 0.4rem;
  border: none;
  background: transparent;
  color: var(--ak-text-soft);
  font-size: 0.95rem;
  cursor: pointer;
  padding: 0.05rem 0.25rem;
  transition: color var(--ak-duration-fast) var(--ak-ease-standard);
}

.status-item .status-close:hover,
.status-item .status-close:focus-visible {
  color: var(--ak-text-strong);
}

.status-item.dismissed {
  opacity: 0;
  transform: translateY(-4px);
}

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

@keyframes glowShift {
  0% {
    background-position: 0% 50%;
    opacity: 0.65;
  }
  50% {
    background-position: 100% 50%;
    opacity: 1;
  }
  100% {
    background-position: 0% 50%;
    opacity: 0.8;
  }
}

#password-reset-overlay {
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 23, 0.88);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 30;
}

#password-reset-overlay.hidden {
  display: none;
}

.reset-card {
  width: min(420px, 92%);
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid rgba(148, 163, 184, 0.3);
  border-radius: 24px;
  padding: 1.6rem;
  box-shadow: 0 30px 80px rgba(2, 6, 23, 0.8);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

/* Auth + access container */
#access-box {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  height: 100%;
  padding: 2.4rem clamp(1.8rem, 4vw, 2.8rem);
  animation: fadeIn var(--ak-duration-med) var(--ak-ease-standard);
  gap: 1.25rem;
}

#access-box h2,
.access-title {
  font-size: clamp(1.6rem, 2vw, 1.9rem);
  font-weight: 650;
  color: var(--ak-text-strong);
  letter-spacing: 0.03em;
  margin-bottom: 0.75rem;
}

/* Auth tabs */
.auth-tabs {
  display: inline-flex;
  align-self: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
  padding: 0.18rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(18px) saturate(160%);
  border: 1px solid rgba(148, 163, 184, 0.55);
}

.auth-tab {
  padding: 0.5rem 1.2rem;
  border-radius: 999px;
  border: 1px solid transparent;
  background: radial-gradient(
    circle at 0% 0%,
    rgba(255, 122, 26, 0.35),
    rgba(30, 64, 175, 0.15)
  );
  color: var(--ak-text-strong);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition:
    transform var(--ak-duration-fast) var(--ak-ease-standard),
    box-shadow var(--ak-duration-med) var(--ak-ease-standard),
    background var(--ak-duration-med) var(--ak-ease-standard),
    border-color var(--ak-duration-med) var(--ak-ease-standard),
    color var(--ak-duration-med) var(--ak-ease-standard);
  box-shadow: 0 8px 16px rgba(15, 23, 42, 0.4);
}

.auth-tab.active {
  border-color: rgba(255, 122, 26, 0.95);
  background: linear-gradient(
    135deg,
    rgba(255, 122, 26, 0.98),
    rgba(232, 91, 0, 0.98)
  );
  color: #0b1120;
  box-shadow: 0 10px 22px rgba(255, 122, 26, 0.65);
}

.auth-tab:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(15, 23, 42, 0.7);
}

.auth-panel-inner {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 0.6rem;
}

.helper-text {
  font-size: 0.85rem;
  color: var(--ak-text-soft);
  line-height: 1.4;
}

.ghost-link {
  background: none;
  border: none;
  color: var(--ak-accent);
  font-size: 0.85rem;
  cursor: pointer;
  text-decoration: underline;
  align-self: center;
  padding: 0.25rem 0.5rem;
  transition: color var(--ak-duration-fast) var(--ak-ease-standard);
}

.ghost-link:hover,
.ghost-link:focus-visible {
  color: var(--ak-text-strong);
}

.reset-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toggle-link {
  margin-top: 0.8rem;
  font-size: 0.85rem;
  text-decoration: underline;
  cursor: pointer;
  color: var(--ak-muted);
  transition:
    color var(--ak-duration-fast) var(--ak-ease-standard),
    transform var(--ak-duration-fast) var(--ak-ease-standard);
}

.toggle-link:hover {
  color: var(--ak-text-strong);
  transform: translateY(-1px);
}

/* Shared input style (auth + access code) */
#login-email,
#login-password,
#signup-name,
#signup-email,
#signup-password,
#reset-request-email,
#reset-password,
#reset-password-confirm,
#access-code {
  width: 100%;
  padding: 0.78rem 1rem;
  font-size: 0.95rem;
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: rgba(15, 23, 42, 0.6);
  color: var(--ak-text-strong);
  outline: none;
  transition:
    border var(--ak-duration-med) var(--ak-ease-standard),
    box-shadow var(--ak-duration-med) var(--ak-ease-standard),
    background var(--ak-duration-med) var(--ak-ease-standard),
    transform var(--ak-duration-fast) var(--ak-ease-standard);
}

#login-email::placeholder,
#login-password::placeholder,
#signup-name::placeholder,
#signup-email::placeholder,
#signup-password::placeholder,
#access-code::placeholder {
  color: var(--ak-muted);
}

#login-email:focus,
#login-password:focus,
#signup-name:focus,
#signup-email:focus,
#signup-password:focus,
#access-code:focus {
  border-color: var(--ak-primary);
  box-shadow: 0 0 0 1px var(--ak-primary-soft),
    0 0 24px rgba(255, 122, 26, 0.28);
  background: rgba(15, 23, 42, 0.95);
  transform: translateY(-1px);
}

/* Chat shell */
#chat-box {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 1.8rem clamp(1.6rem, 3vw, 2.3rem) 1.4rem;
  animation: fadeIn var(--ak-duration-med) var(--ak-ease-standard);
  background: rgba(3, 7, 18, 0.42);
  border-radius: 24px;
  backdrop-filter: blur(32px) saturate(240%);
  border: 1px solid rgba(255, 255, 255, 0.04);
  box-shadow: inset 0 0 80px rgba(15, 23, 42, 0.35);
}

/* Spacious chat window */
#chat-window {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
  scroll-behavior: smooth;
  padding-right: 0.6rem;
  padding-bottom: 0.4rem;
}

/* Message base styles */
.msg {
  max-width: min(75ch, 95%);
  padding: 1.15rem 1.4rem;
  border-radius: 22px;
  line-height: 1.75;
  font-size: 1rem;
  letter-spacing: 0.01em;
  word-wrap: break-word;
  box-shadow: 0 18px 40px rgba(2, 6, 23, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(15, 23, 42, 0.65);
  white-space: normal;
  transition:
    transform 220ms var(--ak-ease-standard),
    box-shadow 220ms var(--ak-ease-standard),
    background 220ms var(--ak-ease-standard),
    border-color 220ms var(--ak-ease-standard);
  position: relative;
}

.msg p {
  margin-bottom: 0.8rem;
}
.msg p:last-child {
  margin-bottom: 0;
}

.msg ul,
.msg ol {
  margin: 0 0 0.8rem 1.2rem;
  padding-left: 1rem;
}

.msg li {
  margin-bottom: 0.35rem;
}
.msg li:last-child {
  margin-bottom: 0;
}

.msg strong {
  font-weight: 600;
}

.msg em {
  font-style: italic;
}

.word-fade {
  display: inline-block;
  opacity: 0;
  animation: wordFadeIn 480ms var(--ak-ease-standard) forwards;
}

.word-fade.word-complete {
  opacity: 1;
  animation: none;
}

.msg:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.4);
  border-color: rgba(255, 255, 255, 0.08);
  background: rgba(15, 23, 42, 0.72);
}

.msg:focus-within {
  outline: 2px solid rgba(255, 122, 26, 0.55);
  outline-offset: 2px;
}

/* Typing indicator */
#typing-indicator {
  display: inline-flex;
  align-items: center;
  gap: 10px;

  padding: 7px 14px;
  margin: 6px auto 4px;
  border-radius: 999px;

  font-size: 0.9rem;
  color: var(--ak-text-soft);

  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(148, 163, 184, 0.45);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);

  opacity: 0;
  transform: translateY(4px);
  pointer-events: none;

  transition:
    opacity 260ms var(--ak-ease-standard),
    transform 260ms var(--ak-ease-standard);
}

/* Show state (controlled by JS) */
#typing-indicator.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: none;
}

/* Label text */
#typing-indicator .label {
  font-size: 0.9rem;
  color: var(--ak-text-strong);
  opacity: 0.85;
  letter-spacing: 0.2px;
  white-space: nowrap;
}

/* Three dot wave animation */
#typing-indicator .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(249, 250, 251, 0.9);
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.35);

  transform-origin: center bottom;
  animation: typingWave 1.1s ease-in-out infinite;
}

/* stagger animation delays */
#typing-indicator .dot:nth-child(2) {
  animation-delay: 0.15s;
}
#typing-indicator .dot:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes typingWave {
  0% {
    transform: translateY(0) scale(1);
    opacity: 0.6;
  }
  30% {
    transform: translateY(-3px) scale(1.15);
    opacity: 1;
  }
  60% {
    transform: translateY(0) scale(1);
    opacity: 0.7;
  }
  100% {
    transform: translateY(0) scale(1);
    opacity: 0.6;
  }
}

/* Composer */
#input-area {
  display: flex;
  align-items: center;
  gap: 0.75rem;

  /* glass surface */
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.55);
  border-radius: 18px;
  padding: 0.6rem 0.85rem;

  position: sticky;
  bottom: 0;

  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(22px) saturate(180%);
  -webkit-backdrop-filter: blur(22px) saturate(180%);

  transition:
    box-shadow 220ms var(--ak-ease-standard),
    border-color 220ms var(--ak-ease-standard),
    background 220ms var(--ak-ease-standard),
    transform 180ms var(--ak-ease-standard);
}

#input-area.is-busy {
  border-color: rgba(56, 189, 248, 0.45);
  box-shadow:
    0 0 0 1px rgba(56, 189, 248, 0.35),
    0 25px 45px rgba(2, 6, 23, 0.65);
}

/* subtle “lift” when focused anywhere inside the input area */
#input-area.is-focused {
  background: rgba(15, 23, 42, 0.98);
  border-color: rgba(255, 122, 26, 0.7);
  box-shadow: 0 22px 50px rgba(15, 23, 42, 0.95);
  transform: translateY(-1px);
}

/* Text input */
#user-input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 0.98rem;
  line-height: 1.5;
  outline: none;
  padding: 0.4rem 0.1rem;
  color: var(--ak-text-strong);

  /* smooth caret + crisp text */
  -webkit-font-smoothing: antialiased;
  caret-color: var(--ak-primary);

  transition:
    color 160ms var(--ak-ease-standard),
    transform 160ms var(--ak-ease-standard);
}

#user-input::placeholder {
  color: var(--ak-muted);
}

/* tiny nudge when typing starts */
#user-input.typing {
  transform: translateY(-0.5px);
}

/* Buttons */
button {
  background: linear-gradient(135deg, var(--ak-primary), var(--ak-primary-dark));
  border: 1px solid rgba(255, 122, 26, 0.4);
  color: #0b1120;

  padding: 0.6rem 1.3rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.92rem;

  cursor: pointer;
  white-space: nowrap;

  transition:
    transform 140ms var(--ak-ease-standard),
    box-shadow 200ms var(--ak-ease-standard),
    background 200ms var(--ak-ease-standard),
    border-color 200ms var(--ak-ease-standard),
    opacity 140ms var(--ak-ease-standard);
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(255, 122, 26, 0.6);
  border-color: rgba(255, 122, 26, 0.95);
}

button:active {
  transform: translateY(0);
  box-shadow: 0 4px 10px rgba(15, 23, 42, 0.8);
}

button:disabled {
  opacity: 0.6;
  cursor: default;
  box-shadow: none;
}
button.is-sending {
  opacity: 0.75;
  cursor: default;
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.7);
}


button.end-session {
  background: linear-gradient(135deg, var(--ak-error), #b91c1c);
  border-color: rgba(248, 113, 113, 0.7);
  color: var(--ak-text-strong);
}

/* Error bubbles */
.error-message {
  margin-top: 0.75rem;
  padding: 0.6rem 0.9rem;
  border-radius: 10px;
  background: rgba(248, 113, 113, 0.06);
  border: 1px solid rgba(248, 113, 113, 0.18);
  color: #fecaca;
  font-size: 0.88rem;
  text-align: left;
  line-height: 1.4;
}

/* Utility helpers + base animations */
.hidden {
  display: none !important;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ---------- Scrollbar ---------- */
#chat-window::-webkit-scrollbar {
  width: 6px;
}
#chat-window::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.5);
  border-radius: 10px;
}
#chat-window::-webkit-scrollbar-thumb:hover {
  background: rgba(148, 163, 184, 0.8);
}

/* Loader overlay */
#loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    circle at 10% 0%,
    rgba(15, 23, 42, 0.9),
    rgba(2, 6, 23, 0.9)
  );
  backdrop-filter: blur(30px) saturate(180%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  transition: opacity var(--ak-duration-slow) var(--ak-ease-standard);
}

#loader.active {
  opacity: 1;
  pointer-events: all;
}

.spinner {
  width: 60px;
  height: 60px;
  border: 4px solid rgba(31, 41, 55, 0.9);
  border-top-color: var(--ak-primary);
  border-radius: 50%;
  animation: spin 1.2s var(--ak-ease-standard) infinite;
  box-shadow: 0 0 32px rgba(255, 122, 26, 0.6);
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Dark scheme tweaks */
@media (prefers-color-scheme: dark) {
  body {
    background:
      radial-gradient(circle at 0% 0%, #020617 0%, transparent 45%),
      radial-gradient(circle at 100% 0%, #020617 0%, transparent 45%),
      radial-gradient(circle at 0% 100%, #020617 0%, transparent 45%),
      radial-gradient(circle at 100% 100%, #000 0%, #000 65%);
    color: var(--ak-text-main);
  }

  #container {
    background: rgba(15, 23, 42, 0.78);
    border-color: rgba(148, 163, 184, 0.55);
    box-shadow:
      0 30px 80px rgba(0, 0, 0, 0.9),
      0 0 0 1px rgba(15, 23, 42, 0.95);
  }

  #input-area {
    background: rgba(15, 23, 42, 0.9);
  }

  #typing-indicator {
    background: rgba(15, 23, 42, 0.95);
    border-color: rgba(148, 163, 184, 0.6);
  }

  #loader {
    background: radial-gradient(
      circle at 50% 0%,
      rgba(15, 23, 42, 0.96),
      rgba(0, 0, 0, 0.98)
    );
  }
}

/* Responsive tweaks */
@media (max-width: 1024px) {
  body {
    padding: 1.2rem;
  }
  #container {
    max-height: none;
  }
}

@media (max-width: 768px) {
  body {
    padding: 0;
  }

  #container {
    border-radius: 0;
    box-shadow: none;
    max-width: 100%;
    max-height: 100vh;
  }

  #access-box,
  #chat-box {
    padding: 1.4rem 1rem;
  }

  #chat-window {
    gap: 0.8rem;
  }

  .msg {
    max-width: 100%;
    padding: 0.9rem 1rem;
  }
}

/* Message bubble variants */
.msg.assistant {
  align-self: flex-start;
  background: linear-gradient(
    145deg,
    rgba(15, 23, 42, 0.96),
    rgba(15, 23, 42, 0.85)
  );
  color: var(--ak-text-strong);
  padding: 1rem 1.25rem;
  border-radius: 18px;
  margin: 0.15rem 0;
  max-width: min(70ch, 92%);
  line-height: 1.65;
  border: 1px solid rgba(148, 163, 184, 0.55);
  transition: all var(--ak-duration-med) var(--ak-ease-standard);
  animation: fadeInUp var(--ak-duration-med) var(--ak-ease-standard) both;
}

.msg.assistant:hover {
  background: linear-gradient(
    145deg,
    rgba(15, 23, 42, 0.99),
    rgba(15, 23, 42, 0.9)
  );
}

.msg.user {
  align-self: flex-end;
  background: radial-gradient(
    circle at 0% 0%,
    rgba(255, 122, 26, 0.98),
    rgba(232, 91, 0, 0.98)
  );
  color: #0b1120;
  padding: 1rem 1.25rem;
  border-radius: 18px;
  margin: 0.15rem 0;
  max-width: min(70ch, 92%);
  line-height: 1.65;
  animation: fadeInUp var(--ak-duration-med) var(--ak-ease-standard) both;
}

.msg.user:hover {
  background: radial-gradient(
    circle at 0% 0%,
    rgba(255, 140, 60, 1),
    rgba(232, 91, 0, 0.98)
  );
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.msg.assistant.fade-in {
  animation:
    fadeInUp var(--ak-duration-med) var(--ak-ease-standard) both,
    pulseGlow 1s var(--ak-ease-standard);
}

@keyframes pulseGlow {
  0% {
    box-shadow: 0 0 0px rgba(255, 122, 26, 0);
  }
  30% {
    box-shadow: 0 0 22px rgba(255, 122, 26, 0.32);
  }
  100% {
    box-shadow: 0 0 0px rgba(255, 122, 26, 0);
  }
}

@keyframes wordFadeIn {
  0% {
    opacity: 0;
    transform: translateY(4px);
  }
  60% {
    opacity: 0.75;
    transform: translateY(1px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}