/* ============================================
   Chatwoot Landing Page — Premium Design System
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Outfit:wght@400;500;600;700;800&display=swap');

/* --- CSS Variables (Light Theme) --- */
:root {
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;

  /* Colors */
  --color-primary: #1f93ff;
  --color-primary-hover: #1a7fd9;
  --color-primary-light: #eff6ff;
  --color-primary-glow: rgba(31, 147, 255, 0.15);
  --color-primary-shadow: rgba(31, 147, 255, 0.25);

  --color-bg: #ffffff;
  --color-bg-alt: #f9fafb;
  --color-bg-card: #ffffff;
  --color-bg-header: rgba(255, 255, 255, 0.85);

  --color-text-primary: #111827;
  --color-text-secondary: #374151;
  --color-text-muted: #6b7280;
  --color-text-faint: #9ca3af;

  --color-border: #e5e7eb;
  --color-border-light: #f3f4f6;
  --color-border-strong: #d1d5db;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 20px var(--color-primary-glow);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Dark Theme --- */
[data-theme="dark"] {
  --color-primary: #3ba0ff;
  --color-primary-hover: #60b3ff;
  --color-primary-light: rgba(59, 160, 255, 0.12);
  --color-primary-glow: rgba(59, 160, 255, 0.2);
  --color-primary-shadow: rgba(59, 160, 255, 0.3);

  --color-bg: #0f1117;
  --color-bg-alt: #161822;
  --color-bg-card: #1a1d2b;
  --color-bg-header: rgba(15, 17, 23, 0.88);

  --color-text-primary: #f1f3f9;
  --color-text-secondary: #c8cdd8;
  --color-text-muted: #8b92a5;
  --color-text-faint: #5c6378;

  --color-border: #2a2d3a;
  --color-border-light: #222530;
  --color-border-strong: #3a3e4f;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 30px var(--color-primary-glow);
}

/* --- Base Reset --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-slow), color var(--transition-slow);
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
}

/* --- Layout Utilities --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.container--narrow {
  max-width: 900px;
}

.container--wide {
  max-width: 1400px;
}

/* ============================================
   HEADER
   ============================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg-header);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-slow), border-color var(--transition-slow), box-shadow var(--transition-slow);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.header__logo img {
  height: 52px;
  width: auto;
  transition: transform var(--transition-base);
}

.header__logo:hover img {
  transform: scale(1.03);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.header__nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
  padding: 4px 0;
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  transition: width var(--transition-base);
}

.header__nav-link:hover {
  color: var(--color-primary);
}

.header__nav-link:hover::after {
  width: 100%;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header__login {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.header__login:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
}

.btn--primary {
  background: var(--color-primary);
  color: #ffffff;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  box-shadow: 0 1px 3px var(--color-primary-shadow);
}

.btn--primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 4px 12px var(--color-primary-shadow);
  transform: translateY(-1px);
}

.btn--primary:active {
  transform: translateY(0);
}

.btn--outline {
  background: var(--color-bg);
  color: var(--color-text-secondary);
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  border: 1px solid var(--color-border-strong);
}

.btn--outline:hover {
  background: var(--color-bg-alt);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--large {
  padding: 14px 32px;
  font-size: 16px;
  border-radius: var(--radius-md);
}

.btn--white {
  background: #ffffff;
  color: var(--color-primary);
  padding: 14px 32px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
}

.btn--white:hover {
  background: #f0f4ff;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.btn--block {
  display: flex;
  width: 100%;
  text-align: center;
}

/* --- Theme Toggle --- */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-card);
  cursor: pointer;
  transition: all var(--transition-base);
  flex-shrink: 0;
}

.theme-toggle:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.theme-toggle:hover svg {
  color: var(--color-primary);
}

.theme-toggle .icon-moon { display: none; }
.theme-toggle .icon-sun { display: block; }

[data-theme="dark"] .theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }

/* --- Language Toggle --- */
.lang-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-card);
  cursor: pointer;
  transition: all var(--transition-base);
  flex-shrink: 0;
  font-family: var(--font-body);
  font-size: 13px;
  gap: 2px;
}

.lang-toggle:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.lang-toggle__active {
  font-weight: 700;
  color: var(--color-primary);
}

.lang-toggle__separator {
  color: var(--color-text-faint);
  margin: 0 2px;
  font-weight: 400;
}

.lang-toggle__inactive {
  font-weight: 500;
  color: var(--color-text-faint);
  transition: color var(--transition-fast);
}

.lang-toggle:hover .lang-toggle__inactive {
  color: var(--color-text-muted);
}

/* --- Mobile Menu Toggle --- */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  border: none;
  background: none;
  cursor: pointer;
  gap: 5px;
  padding: 0;
}

.mobile-menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-secondary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}
.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  padding: 80px 0 100px;
  background: var(--color-bg-alt);
  overflow: hidden;
  transition: background var(--transition-slow);
}

.hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: heroGlow 8s ease-in-out infinite alternate;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -150px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: heroGlow 10s ease-in-out infinite alternate-reverse;
}

@keyframes heroGlow {
  0% { transform: scale(1) translate(0, 0); opacity: 0.6; }
  100% { transform: scale(1.15) translate(20px, -15px); opacity: 1; }
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
  border: 1px solid rgba(31, 147, 255, 0.15);
  animation: fadeInDown 0.6s ease-out;
}

.hero__badge svg {
  width: 16px;
  height: 16px;
}

.hero__title {
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  line-height: 1.15;
  animation: fadeInUp 0.7s ease-out;
}

.hero__title span {
  background: linear-gradient(135deg, var(--color-primary), #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: 18px;
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.7;
  animation: fadeInUp 0.8s ease-out;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  animation: fadeInUp 0.9s ease-out;
}

/* --- Animations --- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-16px); }
  to { opacity: 1; transform: translateY(0); }
}

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

/* Scroll-triggered animation */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   STATS SECTION
   ============================================ */
.stats {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  transition: background var(--transition-slow), border-color var(--transition-slow);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.stats__item {
  padding: 8px 0;
}

.stats__number {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.stats__label {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-top: 4px;
  font-weight: 500;
}

/* ============================================
   FEATURES SECTION
   ============================================ */
.features {
  padding: 96px 0;
  background: var(--color-bg);
  transition: background var(--transition-slow);
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header__title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.section-header__subtitle {
  font-size: 16px;
  color: var(--color-text-muted);
  font-weight: 500;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto;
}

.feature-card {
  padding: 28px;
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), #7c3aed);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.feature-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  transform: translateY(-4px);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  transition: background var(--transition-base), transform var(--transition-base);
}

.feature-card:hover .feature-card__icon {
  background: var(--color-primary);
  transform: scale(1.05);
}

.feature-card__icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
  transition: color var(--transition-base);
}

.feature-card:hover .feature-card__icon svg {
  color: #ffffff;
}

.feature-card__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.feature-card__desc {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============================================
   PRICING SECTION
   ============================================ */
.pricing {
  padding: 96px 0;
  background: var(--color-bg-alt);
  transition: background var(--transition-slow);
}

.pricing__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
}

.pricing__toggle-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.pricing__toggle-label.active {
  color: var(--color-text-primary);
}

.pricing__toggle-switch {
  position: relative;
  width: 48px;
  height: 26px;
  background: var(--color-border-strong);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-base);
  border: none;
  padding: 0;
}

.pricing__toggle-switch.active {
  background: var(--color-primary);
}

.pricing__toggle-switch::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background: #ffffff;
  border-radius: 50%;
  transition: transform var(--transition-base);
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

.pricing__toggle-switch.active::after {
  transform: translateX(22px);
}

.pricing__save-badge {
  font-size: 12px;
  font-weight: 700;
  color: #10b981;
  background: rgba(16, 185, 129, 0.1);
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.pricing__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 960px;
  margin: 0 auto;
}

.pricing-card {
  padding: 32px;
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pricing-card--featured {
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.pricing-card--featured:hover {
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.pricing-card__badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 16px;
  background: var(--color-primary);
  color: #ffffff;
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.pricing-card__header {
  margin-bottom: 24px;
}

.pricing-card__name {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-primary);
}

.pricing-card__desc {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.pricing-card__price-wrap {
  margin-bottom: 28px;
}

.pricing-card__price {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.pricing-card--featured .pricing-card__price {
  color: var(--color-primary);
}

.pricing-card__period {
  font-size: 15px;
  color: var(--color-text-muted);
  font-weight: 500;
}

.pricing-card__features {
  flex: 1;
  margin-bottom: 28px;
}

.pricing-card__features li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 8px 0;
}

.pricing-card__features li svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta {
  padding: 96px 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, #0d6efd 40%, #7c3aed 100%);
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 140%;
  height: 200%;
  background: radial-gradient(ellipse at 30% 50%, rgba(255, 255, 255, 0.06) 0%, transparent 60%);
  pointer-events: none;
}

.cta__content {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.cta__title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.cta__subtitle {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 36px;
  line-height: 1.6;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 64px 0 0;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  transition: background var(--transition-slow), border-color var(--transition-slow);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer__brand-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-top: 16px;
}

.footer__brand-logo {
  height: 48px;
  width: auto;
}

.footer__col-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer__links li {
  margin-bottom: 12px;
}

.footer__links a {
  font-size: 14px;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer__links a:hover {
  color: var(--color-primary);
}

.footer__bottom {
  padding: 24px 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer__copyright {
  font-size: 13px;
  color: var(--color-text-faint);
}

/* ============================================
   CHAT WIDGET
   ============================================ */
.chat-widget-trigger {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  box-shadow: 0 4px 14px var(--color-primary-shadow), 0 0 0 0 rgba(31, 147, 255, 0.3);
  transition: all var(--transition-base);
  z-index: 1000;
  animation: chatPulse 3s ease-in-out infinite;
}

@keyframes chatPulse {
  0%, 100% { box-shadow: 0 4px 14px var(--color-primary-shadow), 0 0 0 0 rgba(31, 147, 255, 0.3); }
  50% { box-shadow: 0 4px 14px var(--color-primary-shadow), 0 0 0 12px rgba(31, 147, 255, 0); }
}

.chat-widget-trigger:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 20px var(--color-primary-shadow);
  animation: none;
}

.chat-widget-trigger svg {
  width: 26px;
  height: 26px;
}

.chat-widget-trigger .icon-close { display: none; }
.chat-widget-trigger.active .icon-chat { display: none; }
.chat-widget-trigger.active .icon-close { display: block; }

/* --- Chat Window --- */
.chat-window {
  position: fixed;
  bottom: 96px;
  right: 28px;
  width: 380px;
  max-height: 520px;
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  z-index: 999;
  transform: scale(0.9) translateY(20px);
  opacity: 0;
  visibility: hidden;
  transform-origin: bottom right;
  transition: all var(--transition-base);
  overflow: hidden;
}

.chat-window.open {
  transform: scale(1) translateY(0);
  opacity: 1;
  visibility: visible;
}

.chat-window__header {
  padding: 16px 20px;
  background: var(--color-primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 12px;
}

.chat-window__avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.chat-window__info h4 {
  font-size: 14px;
  font-weight: 700;
}

.chat-window__info p {
  font-size: 12px;
  opacity: 0.8;
}

.chat-window__messages {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 280px;
  max-height: 340px;
}

.chat-message {
  max-width: 80%;
  padding: 10px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  line-height: 1.5;
  animation: messageSlide 0.3s ease-out;
}

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

.chat-message--bot {
  background: var(--color-bg-alt);
  color: var(--color-text-secondary);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.chat-message--user {
  background: var(--color-primary);
  color: #ffffff;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.chat-window__input {
  padding: 12px 16px;
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: 10px;
  align-items: center;
}

.chat-window__input input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text-primary);
  outline: none;
  transition: border-color var(--transition-fast);
}

.chat-window__input input:focus {
  border-color: var(--color-primary);
}

.chat-window__input input::placeholder {
  color: var(--color-text-faint);
}

.chat-window__input button {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  border: none;
  color: #ffffff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
  flex-shrink: 0;
}

.chat-window__input button:hover {
  background: var(--color-primary-hover);
}

.chat-window__input button svg {
  width: 18px;
  height: 18px;
}

/* --- Typing Indicator --- */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 16px;
  align-self: flex-start;
}

.typing-indicator span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-text-faint);
  animation: typingBounce 1.4s infinite ease-in-out;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30% { transform: translateY(-6px); opacity: 1; }
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing__grid .pricing-card:last-child {
    grid-column: 1 / -1;
    max-width: 400px;
    justify-self: center;
  }
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .header__nav {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--color-bg-card);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 20px 32px;
    gap: 0;
    box-shadow: var(--shadow-lg);
  }

  .header__nav.open {
    display: flex;
  }

  .header__nav-link {
    padding: 12px 0;
    width: 100%;
    border-bottom: 1px solid var(--color-border-light);
  }

  .header__nav-link::after {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .hero {
    padding: 56px 0 72px;
  }

  .hero__title {
    font-size: 1.9rem;
  }

  .hero__subtitle {
    font-size: 16px;
  }

  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .stats__grid {
    gap: 16px;
  }

  .features__grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin: 0 auto;
  }

  .pricing__grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }
  
  .pricing__grid .pricing-card:last-child {
    max-width: none;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .chat-window {
    right: 12px;
    left: 12px;
    bottom: 88px;
    width: auto;
  }
}

@media (max-width: 480px) {
  .header__inner {
    padding: 0 16px;
    height: 64px;
  }

  .header__logo img {
    height: 40px;
  }

  .header__login {
    display: none;
  }

  .stats__grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero__title {
    font-size: 1.6rem;
  }

  .container {
    padding: 0 16px;
  }

  .features,
  .pricing {
    padding: 64px 0;
  }
}