/* =============================================
   COMPONENTS — Projects, Tabs, Feature Lists
   ============================================= */

/* =============================================
   PROJECT TABS
   ============================================= */

.project-tabs {
  background: var(--color-ivory);
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(165, 28, 48, 0.08);
  box-shadow: var(--shadow-card);
}

.tab-nav {
  display: flex;
  background: var(--color-beige);
  border-bottom: 1px solid rgba(165, 28, 48, 0.1);
  overflow-x: auto;
  scrollbar-width: none;
}

.tab-nav::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  flex-shrink: 0;
  padding: 1.1rem 1.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: #6a6a6a;
  background: transparent;
  border: none;
  cursor: pointer;
  transition: var(--transition-fast);
  position: relative;
  letter-spacing: 0.02em;
}

.tab-btn::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-crimson);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.tab-btn:hover {
  color: var(--color-crimson);
}

.tab-btn.active {
  color: var(--color-crimson);
}

.tab-btn.active::after {
  transform: scaleX(1);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: fadeIn 0.35s ease;
}

.tab-content-inner {
  padding: 2.5rem;
}

.tab-heading {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-charcoal);
  margin-bottom: 1.25rem;
}

.tab-content-inner p {
  font-size: 0.95rem;
  color: #4a4a4a;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.feature-list li {
  font-size: 0.92rem;
  color: var(--color-charcoal);
  padding-left: 1.5rem;
  position: relative;
  line-height: 1.6;
}

.feature-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-crimson);
}

/* Tech Grid */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
  margin-top: 0.5rem;
}

.tech-item {
  background: var(--color-beige);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.tech-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-crimson);
}

.tech-value {
  font-size: 0.88rem;
  color: var(--color-charcoal);
  font-weight: 500;
}

/* Impact Stats */
.impact-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.stat-item {
  text-align: center;
  background: var(--color-beige);
  border-radius: 12px;
  padding: 1.5rem 1rem;
}

.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-crimson);
  margin-bottom: 0.25rem;
}

.stat-item .stat-label {
  font-size: 0.78rem;
  color: #6a6a6a;
  line-height: 1.4;
}

/* =============================================
   RESPONSIVE — Mobile & Tablet
   ============================================= */

/* =============================================
   RESPONSIVE — 1024px (tablet landscape)
   ============================================= */

@media (max-width: 1024px) {
  .shapes-grid        { grid-template-columns: repeat(2, 1fr); }
  .lab-grid           { grid-template-columns: repeat(2, 1fr); }
  .research-grid      { grid-template-columns: repeat(2, 1fr); }
  .philosophy-grid    { grid-template-columns: repeat(2, 1fr); }
  .achievements-grid  { grid-template-columns: repeat(2, 1fr); }
  .impact-stats       { grid-template-columns: repeat(2, 1fr); }

  .athlete-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .stage-featured {
    grid-template-columns: 1fr;
  }

  .stage-highlights-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .achievement-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

/* =============================================
   RESPONSIVE — 768px (tablet portrait / large phone)
   ============================================= */

@media (max-width: 768px) {

  /* Nav */
  .nav-links,
  .btn-nav { display: none; }

  .nav-hamburger { display: flex; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0;
    top: 60px;
    background: rgba(247, 243, 239, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 1.5rem var(--container-padding) 2rem;
    z-index: 999;
    gap: 0;
    overflow-y: auto;
  }

  .nav-links.open .nav-link {
    font-size: 1.15rem;
    color: var(--color-charcoal);
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-gray-warm);
    border-radius: 0;
    width: 100%;
  }

  .nav-links.open .nav-link::after { display: none; }

  /* Hero split → single column */
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2.5rem;
    padding-top: 4rem;
    padding-bottom: 3rem;
  }

  .hero-portrait { order: -1; }

  .portrait-frame {
    width: min(260px, 75vw);
    aspect-ratio: 3/4;
    margin: 0 auto;
  }

  .hero-ctas {
    justify-content: center;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
  }

  .hero-ctas .btn { width: 100%; max-width: 300px; }

  .hero-tagline {
    margin-left: auto;
    margin-right: auto;
    font-size: 0.95rem;
  }

  /* Grids → 1 column */
  .shapes-grid        { grid-template-columns: 1fr; }
  .philosophy-grid    { grid-template-columns: 1fr; }
  .lab-grid           { grid-template-columns: 1fr; }
  .research-grid      { grid-template-columns: 1fr; }
  .stage-highlights-grid { grid-template-columns: 1fr; }
  .achievements-grid  { grid-template-columns: 1fr; }
  .contact-grid       { grid-template-columns: 1fr; }
  .tech-grid          { grid-template-columns: 1fr; }
  .impact-stats       { grid-template-columns: 1fr; }

  /* Stage featured → stack */
  .stage-featured {
    grid-template-columns: 1fr;
  }
  .stage-featured-text { padding: 2rem; }

  /* Achievement stats */
  .achievement-stats {
    grid-template-columns: repeat(2, 1fr);
    padding: 1.5rem;
    gap: 1rem;
  }

  /* Quote */
  .hero-quote p { font-size: clamp(1.2rem, 5vw, 1.75rem); }

  /* Timeline */
  .timeline-item {
    grid-template-columns: 36px 1fr;
    gap: 1rem;
  }
  .timeline-line { left: 18px; }

  /* Tabs */
  .tab-content-inner { padding: 1.5rem; }

  /* Contact form */
  .contact-form { padding: 1.75rem; }

  /* Video hero height on tablet */
  .video-hero {
    height: 75svh;
    height: 75vh;
    height: 75svh;
  }
}

/* =============================================
   RESPONSIVE — 480px (phone)
   ============================================= */

@media (max-width: 480px) {

  /* Nav container compact */
  .nav-container { padding: 1rem 1.25rem; }

  /* Video hero — short on small phones */
  .video-hero {
    height: 65svh;
    height: 65vh;
    height: 65svh;
  }

  .video-hero-caption { font-size: clamp(1.6rem, 8vw, 2.5rem); }

  /* Hero text tighter */
  .hero-name { font-size: clamp(2.4rem, 11vw, 3.5rem); }
  .hero-sub  { font-size: clamp(1.1rem, 5vw, 1.5rem); }

  /* Portrait smaller on small phones */
  .portrait-frame { width: min(220px, 70vw); }

  /* CTA buttons full-width */
  .hero-ctas .btn { width: 100%; max-width: none; }

  /* Cards — tighter padding */
  .shape-card,
  .lab-card,
  .research-card,
  .achievement-card { padding: 1.5rem; }

  /* Achievement stats — 2 col on phone */
  .achievement-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    padding: 1.25rem;
  }
  .stat-count { font-size: 2rem; }

  /* Timeline tighter */
  .timeline-item { gap: 0.875rem; }
  .timeline-title { font-size: 1.1rem; }

  /* Mindset buttons wrap better */
  .mindset-buttons { gap: 0.4rem; }

  /* Section headings */
  .section-heading { font-size: clamp(1.6rem, 7vw, 2.5rem); }

  /* Contact links */
  .contact-link-text { font-size: 0.88rem; }

  /* Footer nav wrap tighter */
  .footer-nav { gap: 0.2rem 1rem; }

  /* Chatbot full-width on very small screens */
  #chatbot-container {
    bottom: 0.75rem;
    right: 0.75rem;
    left: 0.75rem;
  }
  #chatbot-panel { height: 420px; }
}

/* =============================================
   CHATBOT WIDGET
   ============================================= */

#chatbot-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 9000;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 1rem;
}

/* Toggle button */
#chatbot-toggle {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: var(--gradient-crimson);
  color: var(--color-white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 32px rgba(165, 28, 48, 0.4);
  transition: var(--transition-smooth);
  position: relative;
}

#chatbot-toggle::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid rgba(165, 28, 48, 0.3);
  animation: pulse-ring 2.5s ease-out infinite;
}

#chatbot-toggle:hover {
  transform: scale(1.08);
  box-shadow: 0 12px 40px rgba(165, 28, 48, 0.5);
}

#chatbot-toggle.hidden {
  opacity: 0;
  transform: scale(0.7);
  pointer-events: none;
}

/* Panel */
#chatbot-panel {
  width: 380px;
  height: 520px;
  background: var(--color-ivory);
  border-radius: 20px;
  box-shadow: 0 24px 80px rgba(44, 44, 44, 0.2), 0 4px 16px rgba(165, 28, 48, 0.1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  transform: translateY(16px) scale(0.96);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

#chatbot-panel.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: all;
}

/* Header */
.chatbot-header {
  background: var(--gradient-crimson);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.875rem;
  flex-shrink: 0;
}

.chatbot-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid rgba(255, 255, 255, 0.4);
  flex-shrink: 0;
}

.chatbot-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.chatbot-header-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.chatbot-name {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-white);
  line-height: 1.2;
}

.chatbot-sub {
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.65);
  letter-spacing: 0.03em;
}

#chatbot-close {
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition-fast);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  flex-shrink: 0;
}

#chatbot-close:hover {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.15);
}

/* Messages area */
#chatbot-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  scroll-behavior: smooth;
}

#chatbot-messages::-webkit-scrollbar {
  width: 4px;
}

#chatbot-messages::-webkit-scrollbar-track {
  background: transparent;
}

#chatbot-messages::-webkit-scrollbar-thumb {
  background: var(--color-gray-warm);
  border-radius: 4px;
}

/* Bubbles */
.chat-bubble {
  max-width: 85%;
  padding: 0.75rem 1rem;
  border-radius: 16px;
  font-size: 0.88rem;
  line-height: 1.6;
  animation: fadeUp 0.25s ease forwards;
}

.chat-bubble--user {
  background: var(--gradient-crimson);
  color: var(--color-white);
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.chat-bubble--bot {
  background: var(--color-beige);
  color: var(--color-charcoal);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
  border: 1px solid rgba(165, 28, 48, 0.07);
}

/* Typing indicator */
.chat-typing {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 0.875rem 1rem;
}

.chat-typing span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-crimson-muted);
  animation: typing-dot 1.2s ease infinite;
}

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

@keyframes typing-dot {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30% { transform: translateY(-6px); opacity: 1; }
}

/* Input area */
.chatbot-input-area {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--color-gray-warm);
  display: flex;
  gap: 0.625rem;
  align-items: center;
  background: var(--color-ivory);
  flex-shrink: 0;
}

#chatbot-input {
  flex: 1;
  background: var(--color-beige);
  border: 1.5px solid var(--color-gray-warm);
  border-radius: 50px;
  padding: 0.625rem 1rem;
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: var(--color-charcoal);
  outline: none;
  transition: var(--transition-fast);
}

#chatbot-input:focus {
  border-color: var(--color-crimson);
  background: var(--color-ivory);
  box-shadow: 0 0 0 3px rgba(165, 28, 48, 0.08);
}

#chatbot-input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

#chatbot-send {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--gradient-crimson);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition-fast);
}

#chatbot-send:hover:not(:disabled) {
  transform: scale(1.1);
  box-shadow: 0 4px 16px rgba(165, 28, 48, 0.35);
}

#chatbot-send:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* Mobile */
@media (max-width: 480px) {
  #chatbot-container {
    bottom: 1rem;
    right: 1rem;
    left: 1rem;
    align-items: stretch;
  }

  #chatbot-panel {
    width: 100%;
    height: 460px;
  }

  #chatbot-toggle {
    align-self: flex-end;
  }
}