:root {
  --primary-color: #ff6b9d;
  --primary-light: #ffb3c6;
  --primary-dark: #e64a82;
  --bg-gradient: linear-gradient(135deg, #fff5f8 0%, #fed7e2 100%);
  --chat-bg: #ffffff;
  --user-msg-bg: linear-gradient(135deg, #ff758c 0%, #ff7eb3 100%);
  --ai-msg-bg: #fff0f5;
  --text-dark: #2d3748;
  --text-muted: #718096;
  --border-color: #fbb6ce;
  --shadow-soft: 0 10px 25px -5px rgba(255, 107, 157, 0.15), 0 8px 10px -6px rgba(255, 107, 157, 0.1);
  --shadow-header: 0 4px 20px rgba(255, 107, 157, 0.12);
  --radius-lg: 20px;
  --radius-md: 14px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: 'Nunito', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg-gradient);
  color: var(--text-dark);
  height: 100vh;
  height: 100dvh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

.chat-container {
  width: 100%;
  max-width: 500px;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--chat-bg);
  box-shadow: var(--shadow-soft);
  position: relative;
}

@media (min-width: 520px) {
  .chat-container {
    height: 94vh;
    border-radius: 28px;
    border: 2px solid #ffe4e6;
    overflow: hidden;
  }
}

/* Header */
.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  background: #ffffff;
  border-bottom: 1px solid #ffe4e6;
  box-shadow: var(--shadow-header);
  z-index: 10;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.avatar-container {
  position: relative;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ffd1dc, #ff9ebb);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: 0 4px 10px rgba(255, 107, 157, 0.25);
}

.online-dot {
  position: absolute;
  bottom: 2px;
  right: 2px;
  width: 11px;
  height: 11px;
  background-color: #ed8936;
  border: 2px solid #ffffff;
  border-radius: 50%;
}

.online-dot.ready {
  background-color: #48bb78;
}

.char-info {
  display: flex;
  flex-direction: column;
}

.char-name {
  font-family: 'Fredoka', cursive, sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: #ff3377;
  display: flex;
  align-items: center;
  gap: 6px;
}

.badge {
  font-size: 0.65rem;
  font-family: 'Nunito', sans-serif;
  background: #fff0f5;
  color: #ff477e;
  border: 1px solid #fbb6ce;
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 700;
}

.char-status {
  font-size: 0.78rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 1px;
}

.pulse {
  width: 6px;
  height: 6px;
  background-color: #ed8936;
  border-radius: 50%;
  display: inline-block;
  animation: pulse-animation 1.5s infinite;
}

.pulse.ready {
  background-color: #38a169;
}

@keyframes pulse-animation {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.icon-btn {
  background: #fff0f5;
  border: 1px solid #ffd1dc;
  font-size: 1.1rem;
  padding: 8px 10px;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.icon-btn:active {
  transform: scale(0.92);
  background: #ffe4e6;
}

/* Modal Overlay */
.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(3px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  animation: fadeIn 0.2s ease;
}

.modal-overlay.hidden {
  display: none;
}

.modal-card {
  background: #ffffff;
  border-radius: 20px;
  padding: 20px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  border: 1.5px solid #ffb3c6;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.modal-header h3 {
  font-family: 'Fredoka', sans-serif;
  color: #ff3377;
  font-size: 1.1rem;
}

.close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: #a0aec0;
  cursor: pointer;
}

.modal-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin-bottom: 14px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.input-group.hidden {
  display: none;
}

.input-group label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-dark);
}

.custom-select, .custom-input, .file-input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid #fbb6ce;
  background: #fff5f8;
  font-size: 0.85rem;
  outline: none;
}

.custom-select:focus, .custom-input:focus {
  border-color: #ff3377;
  background: #ffffff;
}

.primary-btn {
  width: 100%;
  background: linear-gradient(135deg, #ff5388, #ff739d);
  color: #ffffff;
  border: none;
  padding: 12px;
  border-radius: 14px;
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(255, 83, 136, 0.3);
  margin-top: 4px;
}

.primary-btn:active {
  transform: scale(0.98);
}

/* Model Loader Banner */
.model-loader-banner {
  background: #fff5f8;
  border-bottom: 1px solid #fbb6ce;
  padding: 10px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: all 0.3s ease;
}

.model-loader-banner.hidden {
  display: none;
}

.loader-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.loader-icon {
  font-size: 1.3rem;
}

.loader-text-group {
  display: flex;
  flex-direction: column;
}

.loader-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: #d53f8c;
}

.loader-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.progress-bar-container {
  width: 100%;
  height: 6px;
  background: #fed7e2;
  border-radius: 6px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #ff5388, #ff85a1);
  width: 0%;
  transition: width 0.2s ease;
}

/* Chat Messages */
.chat-messages {
  flex: 1;
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: linear-gradient(180deg, #fff9fa 0%, #ffffff 100%);
  scroll-behavior: smooth;
}

.welcome-card {
  background: linear-gradient(135deg, #fff0f5 0%, #ffe4e6 100%);
  border: 1.5px dashed #ff9ebb;
  border-radius: var(--radius-lg);
  padding: 16px;
  text-align: center;
  margin-bottom: 8px;
  animation: fadeIn 0.4s ease-out;
}

.welcome-icon {
  font-size: 2rem;
  margin-bottom: 6px;
}

.welcome-card h3 {
  font-family: 'Fredoka', sans-serif;
  color: #ff3377;
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.welcome-card p {
  font-size: 0.88rem;
  color: #5a6578;
  line-height: 1.4;
}

/* Message Bubbles */
.message {
  display: flex;
  flex-direction: column;
  max-width: 85%;
  animation: slideUp 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.message.user {
  align-self: flex-end;
}

.message.ai {
  align-self: flex-start;
}

.msg-sender {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 3px;
  margin-left: 6px;
}

.message.user .msg-sender {
  margin-left: 0;
  margin-right: 6px;
  align-self: flex-end;
}

.msg-bubble {
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  font-size: 0.95rem;
  line-height: 1.5;
  word-break: break-word;
  white-space: pre-wrap;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.message.user .msg-bubble {
  background: var(--user-msg-bg);
  color: #ffffff;
  border-bottom-right-radius: 4px;
  font-weight: 600;
}

.message.ai .msg-bubble {
  background: var(--ai-msg-bg);
  color: var(--text-dark);
  border: 1px solid #fbb6ce;
  border-bottom-left-radius: 4px;
}

.action-text {
  font-style: italic;
  color: #c53030;
  font-weight: 600;
}

/* Typing Indicator */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 16px;
  background: var(--ai-msg-bg);
  border: 1px solid #fbb6ce;
  border-radius: var(--radius-lg);
  border-bottom-left-radius: 4px;
  width: fit-content;
}

.dot {
  width: 7px;
  height: 7px;
  background: #ff6b9d;
  border-radius: 50%;
  animation: typing 1.4s infinite ease-in-out both;
}

.dot:nth-child(1) { animation-delay: 0s; }
.dot:nth-child(2) { animation-delay: 0.2s; }
.dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1.1); opacity: 1; }
}

/* Quick Action Chips */
.quick-chips {
  display: flex;
  gap: 8px;
  padding: 8px 14px;
  overflow-x: auto;
  white-space: nowrap;
  background: #fff5f8;
  border-top: 1px solid #ffe4e6;
  scrollbar-width: none;
}

.quick-chips::-webkit-scrollbar {
  display: none;
}

.chip {
  background: #ffffff;
  border: 1px solid #ffb3c6;
  color: #ff3377;
  padding: 6px 12px;
  border-radius: 18px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 5px rgba(255, 107, 157, 0.08);
}

.chip:active {
  transform: scale(0.94);
  background: #ffe4e6;
}

/* Input Area */
.chat-input-area {
  padding: 12px 14px;
  background: #ffffff;
  border-top: 1px solid #ffe4e6;
}

.input-form {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  background: #fff5f8;
  border: 1.5px solid #fbb6ce;
  border-radius: 24px;
  padding: 6px 8px 6px 14px;
  transition: border-color 0.2s ease;
}

.input-form:focus-within {
  border-color: #ff3377;
  background: #ffffff;
}

textarea {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text-dark);
  resize: none;
  max-height: 100px;
  padding: 4px 0;
  line-height: 1.4;
}

button[type="submit"] {
  background: linear-gradient(135deg, #ff5388, #ff739d);
  color: white;
  border: none;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  cursor: pointer;
  box-shadow: 0 3px 8px rgba(255, 83, 136, 0.35);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

button[type="submit"]:active {
  transform: scale(0.9);
}

button[type="submit"]:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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