/* --- 1. GLOBAL STYLES --- */
:root {
  /* Color Palette - Calming Blues */
  --color-primary: #5b9bd5;        /* Soft blue */
  --color-primary-light: #d0e5f5;  /* Very light blue */
  --color-primary-dark: #4682b4;   /* Steel blue */
  --color-secondary: #8db3e2;      /* Lighter blue */
  --color-accent-calm: #4682b4;    /* Steel blue */
  --color-accent-soft: #e7f2fa;    /* Softest blue */

  /* Text Colors */
  --color-text: #333333;           /* Dark gray for text */
  --color-text-light: #666666;     /* Medium gray for secondary text */

  /* Background Colors */
  --color-background: #ffffff;     /* White background */
  --color-card-bg: #f9fbfd;        /* Very light blue-gray for cards */
  --color-alt-bg: #f0f7fd;         /* Alternative background */
  --color-border: #e0e9f5;         /* Light blue-gray for borders */

  /* Chat Colors */
  --color-bubble-bot: #E3F2FD;
  --color-bubble-user: #E9ECEF;
  --color-error: #D9534F;
  --color-white: #FFFFFF;

  /* Typography */
  --font-primary: 'Lato', sans-serif;
  --font-secondary: 'Montserrat', sans-serif;

  /* Spacing */
  --section-padding: 50px;
  --border-radius: 8px;
  --card-radius: 12px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  color: var(--color-text);
  line-height: 1.6;
  background-color: var(--color-background);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-secondary);
  font-weight: 600;
  margin-bottom: 0.5em;
  color: var(--color-primary-dark);
}

a {
  text-decoration: none;
  color: var(--color-primary);
  transition: color 0.3s ease, transform 0.3s ease;
}

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

section {
  padding: var(--section-padding) 0;
}

.alt-bg {
  background-color: var(--color-alt-bg);
}

.text-center {
  text-align: center;
}

.mt-20 {
  margin-top: 20px;
}

/* --- 2. HEADER --- */
.site-header {
  background-color: var(--color-white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 10px 0;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-title {
  font-size: 1.5rem;
  color: var(--color-primary);
  margin: 0;
}

.site-nav ul {
  display: flex;
  list-style: none;
  gap: 25px;
}

.site-nav a {
  color: var(--color-text);
  font-weight: 500;
  position: relative;
  padding: 5px 0;
}

.site-nav a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: var(--color-primary);
  transition: width 0.3s ease;
}

.site-nav a:hover::after,
.site-nav a.active::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  margin: 5px 0;
  background-color: var(--color-primary);
  border-radius: 3px;
  transition: all 0.3s ease;
}

/* --- 3. HERO SECTION --- */
.hero {
  padding: 50px 0;
  background-color: var(--color-accent-soft);
  position: relative;
  overflow: hidden;
}

.hero.split-layout .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: center;
}

.hero-content {
  z-index: 1;
}

.hero h2 {
  font-size: clamp(2rem, 5vw, 2.8rem);
  line-height: 1.2;
  color: var(--color-primary-dark);
  margin-bottom: 15px;
}

.hero p {
  font-size: 1.1rem;
  color: var(--color-text-light);
  margin-bottom: 25px;
}

.hero-buttons {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.calm-circle {
  width: 220px;
  height: 220px;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
  border-radius: 50%;
  opacity: 0.8;
}

.calm-waves {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, transparent 30%, var(--color-accent-soft) 70%),
              repeating-radial-gradient(circle at center, var(--color-primary-light) 0, var(--color-primary-light) 3px, transparent 3px, transparent 8px);
  border-radius: 50%;
  opacity: 0.4;
  animation: pulse 4s infinite ease-in-out;
}

@keyframes pulse {
  0% { transform: translate(-50%, -50%) scale(0.8); opacity: 0.4; }
  50% { transform: translate(-50%, -50%) scale(1); opacity: 0.2; }
  100% { transform: translate(-50%, -50%) scale(0.8); opacity: 0.4; }
}

/* --- 4. BUTTONS --- */
.btn {
  display: inline-block;
  padding: 10px 24px;
  font-family: var(--font-secondary);
  font-weight: 500;
  border-radius: var(--border-radius);
  transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  text-align: center;
}

.btn-with-image {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 24px;
}

.btn-icon {
  width: 28px;
  height: 28px;
  object-fit: contain;
  vertical-align: middle;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
  box-shadow: 0 4px 12px rgba(91, 155, 213, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(91, 155, 213, 0.4);
  background-color: var(--color-primary-dark);
  color: white;
}

.btn-secondary {
  background-color: white;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

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

/* --- 5. SECTION LAYOUTS --- */
.section-title {
  font-size: 1.8rem;
  text-align: center;
  margin-bottom: 30px;
  color: var(--color-primary-dark);
  position: relative;
}

.section-title:after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 2px;
  background-color: var(--color-primary);
}

.horizontal-cards .container {
  display: flex;
  flex-direction: column;
}

.feature-row {
  display: flex;
  gap: 20px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.feature-card {
  background-color: var(--color-card-bg);
  border-radius: var(--card-radius);
  padding: 20px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
  flex: 1;
  min-width: 250px;
  display: flex;
  align-items: flex-start;
  gap: 15px;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.feature-icon {
  font-size: 2rem;
  margin-top: 0.2rem;
}

.feature-content {
  flex: 1;
}

.feature-card h3 {
  font-size: 1.2rem;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.feature-card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  margin: 0;
}

/* --- 6. HOW IT WORKS --- */
.horizontal-flow {
  background-color: var(--color-alt-bg);
  padding: 40px 0;
}

.process-flow {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.process-step {
  text-align: center;
  padding: 15px;
  flex: 0 0 auto;
  width: 120px;
}

.step-icon {
  width: 40px;
  height: 40px;
  background-color: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin: 0 auto 10px;
}

.process-step h3 {
  font-size: 1.1rem;
  margin-bottom: 5px;
}

.process-step p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin: 0;
}

.process-arrow {
  color: var(--color-primary);
  font-size: 1.5rem;
  font-weight: bold;
}

/* --- 7. ADVANTAGES PAGE --- */
.page-banner {
  background-color: var(--color-accent-soft);
  padding: 30px 0;
  text-align: center;
}

.page-banner.mini {
  padding: 20px 0;
}

.page-banner h2 {
  font-size: 2rem;
  color: var(--color-primary-dark);
  margin: 0;
}

.category-tabs {
  display: flex;
  justify-content: center;
  margin-bottom: 30px;
  flex-wrap: wrap;
  gap: 10px;
}

.tab-btn {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  padding: 8px 20px;
  border-radius: 30px;
  cursor: pointer;
  font-family: var(--font-secondary);
  font-weight: 500;
  transition: all 0.3s ease;
}

.tab-btn:hover, .tab-btn.active {
  background-color: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.advantage-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

.advantage-card {
  background-color: var(--color-card-bg);
  border-radius: var(--card-radius);
  padding: 25px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

.advantage-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.advantage-icon {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.advantage-card h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.advantage-card p {
  color: var(--color-text-light);
  margin: 0;
}

.tech-highlights .split-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: center;
}

.check-list {
  list-style: none;
  padding: 0;
}

.check-list li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 15px;
}

.check-list li::before {
  content: "✓";
  color: var(--color-primary);
  position: absolute;
  left: 0;
  font-weight: bold;
}

.code-snippet {
  background-color: #1e293b;
  border-radius: var(--border-radius);
  padding: 20px;
  overflow: auto;
}

.code-snippet pre {
  margin: 0;
}

.code-snippet code {
  color: #94a3b8;
  font-family: monospace;
  line-height: 1.5;
}

.cta-banner {
  background-color: var(--color-primary);
  color: white;
  text-align: center;
  padding: 40px 0;
}

.cta-banner h2 {
  color: white;
  margin-bottom: 20px;
}

.cta-banner .btn-primary {
  background-color: white;
  color: var(--color-primary);
  border: none;
}

.cta-banner .btn-primary:hover {
  background-color: var(--color-accent-soft);
  color: var(--color-primary-dark);
}

.cta-banner .btn-with-image {
  padding: 12px 28px;
}

/* --- 8. CHAT PAGE --- */
.chat-page {
  background-color: var(--color-alt-bg);
}

.chat-container {
  padding: 30px 0;
  flex: 1;
}

.flex-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 30px;
}

.chat-main {
  background-color: white;
  border-radius: var(--card-radius);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
  overflow: hidden;
}

.chat-interface {
  display: flex;
  flex-direction: column;
  height: 600px;
}

.chat-log {
  flex-grow: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 15px;
  height: 500px;
}

.message {
  display: flex;
  max-width: 80%;
}

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

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

.message-bubble {
  padding: 12px 16px;
  border-radius: 18px;
}

.bot-message .message-bubble {
  background-color: var(--color-bubble-bot);
  border-bottom-left-radius: 4px;
}

.user-message .message-bubble {
  background-color: var(--color-bubble-user);
  border-bottom-right-radius: 4px;
}

.message-bubble p {
  margin: 0;
}

.thinking-animation {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 20px;
}

.chat-form {
  padding: 15px;
  border-top: 1px solid var(--color-border);
  background-color: var(--color-card-bg);
}

#username {
  width: 100%;
  margin-bottom: 10px;
  padding: 10px 15px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-family: var(--font-primary);
}

.message-input-container {
  display: flex;
  gap: 10px;
}

#question {
  flex: 1;
  padding: 10px 15px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  resize: none;
  font-family: var(--font-primary);
}

/* Chat Send Button (webchat.html) - Facebook light blue, rectangular */
#send-button {
  background-color: #1877f2; /* Facebook blue */
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0.5em 1.5em;
  font-weight: 600;
  font-family: var(--font-secondary);
  box-shadow: 0 2px 6px #1877f233;
  display: flex;
  align-items: center;
  gap: 0.5em;
  cursor: pointer;
  transition: background 0.2s;
  font-size: 1rem;
}
#send-button:hover {
  background-color: #145db2;
}
#send-button svg {
  margin: 0;
}

.chat-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.help-panel, .info-panel {
  background-color: white;
  border-radius: var(--card-radius);
  padding: 20px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
}

.help-panel h3, .info-panel h4 {
  margin-bottom: 15px;
  color: var(--color-primary-dark);
}

.quick-tips {
  padding-left: 25px;
}

.quick-tips li {
  margin-bottom: 10px;
  font-size: 0.95rem;
}

.info-panel p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  margin-bottom: 10px;
}

/* --- 9. CONTACT PAGE --- */
.contact-grid {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 30px;
}

.contact-form {
  background-color: white;
  border-radius: var(--card-radius);
  padding: 25px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.form-row {
  display: flex;
  gap: 20px;
  margin-bottom: 15px;
}

.form-group {
  margin-bottom: 15px;
  flex: 1;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--color-text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-family: var(--font-primary);
}

.form-group textarea {
  resize: vertical;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-methods {
  background-color: white;
  border-radius: var(--card-radius);
  padding: 20px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
}

.contact-method {
  display: flex;
  align-items: flex-start;
  margin-bottom: 20px;
}

.contact-method:last-child {
  margin-bottom: 0;
}

.contact-icon {
  font-size: 1.8rem;
  margin-right: 15px;
  margin-top: 2px;
}

.contact-details h4 {
  font-size: 1.1rem;
  margin-bottom: 5px;
}

.contribute-box {
  background-color: var(--color-accent-soft);
  border-radius: var(--card-radius);
  padding: 20px;
}

.contribute-box h3 {
  margin-bottom: 10px;
}

.contribute-box p {
  margin-bottom: 15px;
}

/* --- 10. FOOTER --- */
.site-footer {
  background-color: var(--color-card-bg);
  padding: 30px 0 20px;
  margin-top: auto;
}

.site-footer.compact {
  padding: 15px 0;
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 30px;
  margin-bottom: 20px;
}

.footer-minimal {
  text-align: center;
}

.footer-info h3 {
  color: var(--color-primary-dark);
  margin-bottom: 10px;
}

.footer-links h4 {
  color: var(--color-primary-dark);
  margin-bottom: 10px;
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 5px;
}

.copyright {
  text-align: center;
  padding-top: 15px;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-light);
  font-size: 0.9rem;
}

.site-footer.compact .copyright {
  padding-top: 0;
  border-top: none;
}

/* --- 11. RESPONSIVE --- */
@media (max-width: 950px) {
  .site-nav {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .site-nav.active {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: white;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    padding: 20px;
  }

  .site-nav.active ul {
    flex-direction: column;
    width: 100%;
  }

  .hero.split-layout .container {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    height: 200px;
    order: -1;
  }

  .flex-layout {
    grid-template-columns: 1fr;
  }

  .tech-highlights .split-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .feature-row {
    flex-direction: column;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    flex-direction: column;
    gap: 15px;
    margin-bottom: 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* --- 12. ANIMATIONS --- */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes draw-wave {
  to {
    stroke-dashoffset: 0;
  }
}

.thinking-animation #brainwave {
  stroke-dasharray: 110;
  stroke-dashoffset: 110;
  animation: draw-wave 2s linear infinite;
}

.feature-card, .process-step, .advantage-card {
  animation: fadeIn 0.6s ease both;
}

/* --- 13. ACCESSIBILITY --- */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

.input-error {
  border-color: var(--color-error) !important;
  box-shadow: 0 0 0 2px rgba(217, 83, 79, 0.2);
}

/* Additional styles for enhanced How It Works section */
.process-details {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
  text-align: left;
}

.detail-item {
  background-color: var(--color-card-bg);
  padding: 20px;
  border-radius: var(--card-radius);
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
}

.detail-item h4 {
  font-size: 1.1rem;
  color: var(--color-primary-dark);
  margin-bottom: 10px;
  position: relative;
}

.detail-item p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

.process-step h3 {
  margin-bottom: 8px;
}

.process-step p {
  max-width: 140px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .process-details {
    grid-template-columns: 1fr;
    gap: 15px;
  }
}