/* ============================================
   ECOIQ — GLOBAL DESIGN SYSTEM
   Theme: Forest Green + Deep Dark + Clean White
   Font: Plus Jakarta Sans + Space Mono
   ============================================ */

:root {
  --dark:        #0a0f0a;
  --dark-mid:    #111a11;
  --dark-light:  #1a2e1a;
  --green:       #22c55e;
  --green-bright:#4ade80;
  --green-muted: #166534;
  --green-glow:  rgba(34,197,94,0.15);
  --blue:        #3b82f6;
  --purple:      #a855f7;
  --orange:      #f97316;
  --white:       #ffffff;
  --text:        #e2ffe2;
  --text-muted:  #6b8f6b;
  --border:      rgba(34,197,94,0.2);
  --glass:       rgba(255,255,255,0.03);
  --shadow:      0 8px 40px rgba(0,0,0,0.4);
  --radius:      16px;
  --radius-sm:   8px;
  --transition:  0.3s cubic-bezier(0.4,0,0.2,1);
}

*,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }
html { scroll-behavior:smooth; }

body {
  background: var(--dark);
  color: var(--text);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 400;
  line-height: 1.7;
  overflow-x: hidden;
}

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ---- CANVAS ---- */
#particleCanvas {
  position: fixed;
  top:0; left:0;
  width:100%; height:100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.3;
}

/* ---- NAVBAR ---- */
.navbar {
  position: fixed;
  top:0; left:0; right:0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2.5rem;
  background: rgba(10,15,10,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  text-decoration: none;
}

.logo-icon { font-size:1.5rem; }
.logo-text {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--green);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: var(--transition);
  position: relative;
  padding-bottom: 2px;
}

.nav-links a::after {
  content:'';
  position: absolute;
  bottom:-4px; left:0;
  width:0; height:2px;
  background: var(--green);
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active { color: var(--green); }
.nav-links a:hover::after,
.nav-links a.active::after { width:100%; }

.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.chat-toggle-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.4rem;
  background: var(--green);
  color: var(--dark);
  border: none;
  border-radius: 50px;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.chat-toggle-btn:hover {
  background: var(--green-bright);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(34,197,94,0.4);
}

.login-btn {
  padding: 0.5rem 1.2rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 50px;
  color: var(--text);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
}

.login-btn:hover {
  border-color: var(--green);
  color: var(--green);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
}

.user-avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  border: 2px solid var(--green);
}

.user-info button {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.3rem 0.8rem;
  border-radius: 50px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: var(--transition);
}

.user-info button:hover { border-color: var(--green); color: var(--green); }
.hidden { display: none !important; }

/* ---- HERO ---- */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 8rem 2rem 4rem;
}

.hero-badge {
  display: inline-block;
  padding: 0.4rem 1.2rem;
  background: var(--green-glow);
  border: 1px solid var(--border);
  border-radius: 50px;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 2rem;
  animation: fadeInUp 0.8s ease both;
}

.hero-title {
  font-size: clamp(3rem,8vw,7rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.title-line {
  display: block;
  animation: fadeInUp 0.8s ease both;
}
.title-line:nth-child(1) { animation-delay:0.1s; }
.title-line:nth-child(2) { animation-delay:0.2s; }
.title-line:nth-child(3) { animation-delay:0.3s; }
.title-line.accent { color: var(--green); }

.hero-subtitle {
  max-width: 600px;
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  animation: fadeInUp 0.8s 0.4s ease both;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  margin-bottom: 4rem;
  animation: fadeInUp 0.8s 0.5s ease both;
  flex-wrap: wrap;
  justify-content: center;
}

.btn {
  padding: 0.85rem 2rem;
  border-radius: 50px;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary {
  background: var(--green);
  color: var(--dark);
}

.btn-primary:hover {
  background: var(--green-bright);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(34,197,94,0.4);
}

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

.btn-ghost:hover {
  border-color: var(--green);
  color: var(--green);
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  gap: 3rem;
  animation: fadeInUp 0.8s 0.6s ease both;
}

.stat { display:flex; flex-direction:column; align-items:center; }
.stat-num {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--green);
  line-height: 1;
}
.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 0.25rem;
}

/* ---- FEATURES ---- */
.features {
  position: relative;
  z-index: 1;
  padding: 6rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-label {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(2rem,4vw,3rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 3rem;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(260px,1fr));
  gap: 1.5rem;
}

.feature-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 2rem;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.feature-card::before {
  content:'';
  position: absolute;
  inset:0;
  opacity:0;
  transition: var(--transition);
}

.feature-card[data-color="green"]::before  { background:linear-gradient(135deg,rgba(34,197,94,0.15),transparent); }
.feature-card[data-color="blue"]::before   { background:linear-gradient(135deg,rgba(59,130,246,0.15),transparent); }
.feature-card[data-color="purple"]::before { background:linear-gradient(135deg,rgba(168,85,247,0.15),transparent); }
.feature-card[data-color="orange"]::before { background:linear-gradient(135deg,rgba(249,115,22,0.15),transparent); }

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--green);
  box-shadow: var(--shadow);
}

.feature-card:hover::before { opacity:1; }
.card-icon { font-size:2rem; }

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  flex: 1;
}

.card-arrow {
  font-size: 1.2rem;
  color: var(--green);
  transition: var(--transition);
}

.feature-card:hover .card-arrow { transform:translateX(4px); }

/* ---- CARBON METER ---- */
.carbon-meter-section {
  position: relative;
  z-index: 1;
  padding: 4rem 2rem 6rem;
  max-width: 1200px;
  margin: 0 auto;
}

.meter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(240px,1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.meter-card {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: var(--transition);
}

.meter-card:hover {
  border-color: var(--green);
  transform: translateY(-4px);
}

.meter-icon { font-size:2rem; margin-bottom:0.75rem; }

.meter-card h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--green);
}

.meter-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.meter-bar {
  height: 8px;
  background: rgba(255,255,255,0.08);
  border-radius: 4px;
  overflow: hidden;
}

.meter-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 1s ease;
}

.meter-fill.red    { background: linear-gradient(90deg,#ef4444,#dc2626); }
.meter-fill.orange { background: linear-gradient(90deg,#f97316,#ea580c); }
.meter-fill.yellow { background: linear-gradient(90deg,#eab308,#ca8a04); }
.meter-fill.green  { background: linear-gradient(90deg,#22c55e,#16a34a); }

/* ---- CHATBOT ---- */
.chatbot-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1999;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.chatbot-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.chatbot-panel {
  position: fixed;
  right: -520px;
  top: 0;
  width: 480px;
  height: 100vh;
  background: var(--dark-mid);
  border-left: 1px solid var(--border);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  transition: right 0.4s cubic-bezier(0.4,0,0.2,1);
  box-shadow: -20px 0 60px rgba(0,0,0,0.5);
}

/* ✅ FIXED: was .chatbot-panel.open — JS toggles .active */
.chatbot-panel.active {
  right: 0;
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--green-glow);
}

.chat-header-info { display:flex; align-items:center; gap:1rem; }

.chat-avatar {
  width:46px; height:46px;
  background: var(--green);
  border-radius: 50%;
  display:flex; align-items:center; justify-content:center;
  font-size:1.3rem;
}

.chat-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
}

.chat-status {
  display:flex; align-items:center; gap:0.4rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.status-dot {
  width:7px; height:7px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.chat-close {
  background:none; border:none;
  color: var(--text-muted);
  font-size:1.1rem; cursor:pointer;
  padding:0.4rem;
  transition: var(--transition);
}

.chat-close:hover { color:var(--white); }

.chat-messages {
  flex:1;
  overflow-y: auto;
  padding: 1.5rem;
  display:flex; flex-direction:column; gap:1.2rem;
  scroll-behavior: smooth;
}

.chat-messages::-webkit-scrollbar { width:4px; }
.chat-messages::-webkit-scrollbar-track { background:transparent; }
.chat-messages::-webkit-scrollbar-thumb { background:var(--border); border-radius:4px; }

.chat-bubble {
  display:flex; gap:0.75rem;
  animation: fadeInUp 0.3s ease;
}

.chat-bubble.user { flex-direction:row-reverse; }

.bubble-avatar {
  width:34px; height:34px;
  border-radius:50%;
  background: var(--green);
  display:flex; align-items:center; justify-content:center;
  font-size:1rem; flex-shrink:0; margin-top:4px;
}

.chat-bubble.user .bubble-avatar {
  background: var(--dark-light);
  font-size:0.7rem; font-family:'Space Mono',monospace;
  font-weight:700; color:var(--green);
}

.bubble-content {
  max-width:80%;
  padding: 1rem 1.2rem;
  border-radius:16px;
  font-size:0.9rem; line-height:1.6;
}

.chat-bubble.ai .bubble-content {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 4px 16px 16px 16px;
}

.chat-bubble.user .bubble-content {
  background: var(--green);
  color: var(--dark);
  border-radius: 16px 4px 16px 16px;
}

.bubble-content p { margin-bottom:0.5rem; }
.bubble-content p:last-child { margin-bottom:0; }

.chat-suggestions {
  display:flex; flex-wrap:wrap; gap:0.5rem; margin-top:0.5rem;
}

.chat-suggestions button {
  padding: 0.4rem 0.9rem;
  background: var(--green-glow);
  border: 1px solid var(--border);
  border-radius: 50px;
  color: var(--green);
  font-size: 0.78rem;
  cursor: pointer;
  transition: var(--transition);
  font-family: 'Plus Jakarta Sans', sans-serif;
}

.chat-suggestions button:hover {
  background: rgba(34,197,94,0.25);
  border-color: var(--green);
}

.chat-input-area {
  padding: 1.2rem 1.5rem 1.5rem;
  border-top: 1px solid var(--border);
}

.chat-input-wrapper {
  display:flex; align-items:flex-end; gap:0.75rem;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.75rem 0.75rem 0.75rem 1.1rem;
  transition: var(--transition);
}

.chat-input-wrapper:focus-within {
  border-color: var(--green);
  box-shadow: 0 0 0 3px var(--green-glow);
}

.chat-input-wrapper textarea {
  flex:1; background:none; border:none; outline:none;
  color: var(--text);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.9rem;
  resize:none; max-height:120px; line-height:1.5;
}

.chat-input-wrapper textarea::placeholder { color:var(--text-muted); }

.send-btn {
  width:38px; height:38px;
  background: var(--green);
  border:none; border-radius:10px;
  color: var(--dark);
  cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  flex-shrink:0;
  transition: var(--transition);
}

.send-btn:hover { background:var(--green-bright); transform:scale(1.05); }
.send-btn:disabled { opacity:0.4; cursor:not-allowed; transform:none; }

.chat-footer-note {
  font-size:0.7rem; color:var(--text-muted);
  text-align:center; margin-top:0.6rem;
  font-family:'Space Mono',monospace;
}

/* ---- TYPING ---- */
.typing-indicator { display:flex; align-items:center; gap:0.3rem; padding:0.8rem 1rem; }
.typing-dot {
  width:7px; height:7px;
  background: var(--green-muted);
  border-radius:50%;
  animation: typingBounce 1.2s infinite ease-in-out;
}
.typing-dot:nth-child(2) { animation-delay:0.2s; }
.typing-dot:nth-child(3) { animation-delay:0.4s; }

/* ---- FOOTER ---- */
.footer {
  position:relative; z-index:1;
  border-top: 1px solid var(--border);
  padding: 2.5rem 2rem;
}

.footer-inner {
  max-width:1200px; margin:0 auto;
  display:flex; align-items:center;
  justify-content:space-between;
  flex-wrap:wrap; gap:1.5rem;
}

.footer-brand { display:flex; flex-direction:column; gap:0.3rem; }
.footer-brand p { font-size:0.8rem; color:var(--text-muted); margin-top:0.3rem; }

.footer-links { display:flex; gap:1.5rem; }
.footer-links a {
  text-decoration:none; color:var(--text-muted);
  font-size:0.85rem; transition:var(--transition);
}
.footer-links a:hover { color:var(--green); }

.footer-note { font-size:0.75rem; color:var(--text-muted); font-family:'Space Mono',monospace; }

/* ---- PAGE STYLES ---- */
.page-hero {
  position:relative; z-index:1;
  padding: 8rem 2rem 4rem;
  text-align:center;
  max-width:900px; margin:0 auto;
}

.page-hero h1 {
  font-size: clamp(2.5rem,5vw,4rem);
  font-weight:800; margin-bottom:1rem;
  animation: fadeInUp 0.8s ease both;
}

.page-hero p {
  font-size:1.1rem; color:var(--text-muted);
  animation: fadeInUp 0.8s 0.1s ease both;
}

.page-content {
  position:relative; z-index:1;
  max-width:1100px; margin:0 auto;
  padding: 2rem 2rem 6rem;
}

/* ---- ANIMATIONS ---- */
@keyframes fadeInUp {
  from { opacity:0; transform:translateY(20px); }
  to   { opacity:1; transform:translateY(0); }
}

@keyframes pulse {
  0%,100% { opacity:1; }
  50%      { opacity:0.4; }
}

@keyframes typingBounce {
  0%,60%,100% { transform:translateY(0); }
  30%          { transform:translateY(-8px); }
}

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

/* ---- SHARED COMPONENTS ---- */
.loading-spinner {
  width:40px; height:40px;
  border: 3px solid var(--border);
  border-top-color: var(--green);
  border-radius:50%;
  animation: spin 0.8s linear infinite;
}

.tag {
  display:inline-block;
  padding: 0.2rem 0.6rem;
  border-radius:4px;
  font-size:0.7rem;
  font-family:'Space Mono',monospace;
  text-transform:uppercase;
  letter-spacing:0.08em;
}

.tag-green  { background:rgba(34,197,94,0.15);  color:var(--green); }
.tag-blue   { background:rgba(59,130,246,0.15);  color:#60a5fa; }
.tag-orange { background:rgba(249,115,22,0.15);  color:#fb923c; }
.tag-red    { background:rgba(239,68,68,0.15);   color:#f87171; }

/* ---- RESPONSIVE ---- */
@media (max-width:768px) {
  .nav-links { display:none; }
  .hero-stats { gap:1.5rem; }
  .chatbot-panel { width:100%; right:-100%; }
  .cards-grid { grid-template-columns:1fr; }
  .footer-inner { flex-direction:column; align-items:flex-start; }
  .hero-cta { flex-direction:column; align-items:center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---- SKIP LINK (Accessibility) ---- */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--green);
  color: var(--dark);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.9rem;
  z-index: 9999;
  text-decoration: none;
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 1rem;
  outline: 3px solid var(--gold, #fff);
  outline-offset: 2px;
}