/* ============================================================
   EKO FARKINDALIK — features.css
   Carbon Calculator · News · Timeline · Documentaries ·
   Sound Player · Page Transitions
   ============================================================ */

/* ─────────────────────────────────────────────────────────────
   SOUND PLAYER WIDGET (floating)
───────────────────────────────────────────────────────────── */
#sound-player {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
  font-family: inherit;
}
.sound-toggle-btn {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--green-dark), var(--green-mid));
  color: white;
  font-size: 1.3rem;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(45,122,79,0.5);
  border: 2px solid rgba(76,175,125,0.4);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}
.sound-toggle-btn:hover { transform: scale(1.1); box-shadow: 0 6px 28px rgba(45,122,79,0.7); }
.sound-toggle-btn.playing::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid var(--green-light);
  animation: main-btn-pulse 1.8s infinite;
  opacity: 0;
}
@keyframes main-btn-pulse {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(1.3); opacity: 0; }
}

.sound-panel {
  background: rgba(10, 24, 16, 0.88);
  backdrop-filter: blur(20px) saturate(130%);
  -webkit-backdrop-filter: blur(20px) saturate(130%);
  border: 1px solid rgba(76, 175, 125, 0.28);
  border-radius: 20px;
  padding: 18px;
  width: 250px;
  display: none;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 16px 48px rgba(0,0,0,0.65), inset 0 1px 1px rgba(255,255,255,0.05);
  transform-origin: bottom right;
  transition: opacity 0.3s, transform 0.3s;
}
.sound-panel.open {
  display: flex;
  animation: panel-open-anim 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}
@keyframes panel-open-anim {
  0% { opacity: 0; transform: scale(0.8) translateY(20px); }
  100% { opacity: 1; transform: scale(1) translateY(0); }
}

.sound-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding-bottom: 8px;
}
.sound-panel-title {
  font-size: 0.76rem;
  color: var(--green-pale);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  margin: 0;
}

/* Auto-Adapt Switch */
.auto-adapt-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  user-select: none;
}
.auto-adapt-switch input { display: none; }
.slider-switch {
  position: relative;
  display: inline-block;
  width: 28px;
  height: 16px;
  background-color: rgba(255,255,255,0.15);
  border-radius: 10px;
  transition: all 0.3s;
}
.slider-switch::before {
  content: "";
  position: absolute;
  height: 12px;
  width: 12px;
  left: 2px;
  bottom: 2px;
  background-color: white;
  border-radius: 50%;
  transition: all 0.3s;
}
.auto-adapt-switch input:checked + .slider-switch { background-color: var(--green-mid); }
.auto-adapt-switch input:checked + .slider-switch::before { transform: translateX(12px); }
.switch-label-txt {
  font-size: 0.68rem;
  color: rgba(255,255,255,0.45);
  font-weight: 600;
}
.auto-adapt-switch input:checked ~ .switch-label-txt { color: var(--green-light); }

/* Sound Indicator */
.sound-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.03);
  padding: 6px 12px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.02);
}
.pulse-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.25);
  transition: background 0.3s, box-shadow 0.3s;
}
.pulse-dot.active {
  background: #4caf7d;
  box-shadow: 0 0 8px #4caf7d;
  animation: indicator-pulse 1.5s infinite;
}
@keyframes indicator-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.indicator-text {
  font-size: 0.76rem;
  color: rgba(255,255,255,0.8);
  font-weight: 500;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

/* Sound Themes */
.sound-themes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.sound-theme-btn {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  padding: 10px 8px;
  color: rgba(255,255,255,0.7);
  font-size: 0.74rem;
  cursor: pointer;
  text-align: center;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex; flex-direction: column; align-items: center; gap: 4px;
}
.sound-theme-btn span.sicon { font-size: 1.25rem; transition: transform 0.2s; }
.sound-theme-btn:hover {
  background: rgba(76,175,125,0.12);
  border-color: rgba(76,175,125,0.35);
  color: white;
}
.sound-theme-btn:hover span.sicon { transform: scale(1.15); }
.sound-theme-btn.active {
  background: rgba(76,175,125,0.22);
  border-color: var(--green-light);
  color: var(--green-light);
  box-shadow: 0 4px 12px rgba(76,175,125,0.15);
  font-weight: 600;
}

/* Controls Row */
.sound-controls-row {
  display: flex;
  align-items: center;
  gap: 10px;
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 10px;
  margin-top: 4px;
}
.ctrl-btn {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: white;
  border-radius: 8px;
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}
.ctrl-btn:hover { background: rgba(255,255,255,0.15); border-color: rgba(255,255,255,0.2); }
.ctrl-btn:active { transform: scale(0.92); }

.volume-row {
  flex: 1;
  display: flex;
  align-items: center;
}
.volume-slider {
  width: 100%;
  -webkit-appearance: none;
  height: 4px;
  border-radius: 2px;
  background: rgba(255,255,255,0.18);
  outline: none;
  cursor: pointer;
}
.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--green-light);
  cursor: pointer;
  box-shadow: 0 0 6px rgba(76,175,125,0.5);
  transition: transform 0.1s;
}
.volume-slider::-webkit-slider-thumb:hover { transform: scale(1.2); }

/* ─────────────────────────────────────────────────────────────
   PAGE TRANSITION OVERLAY
───────────────────────────────────────────────────────────── */
#page-transition {
  position: fixed;
  inset: 0;
  z-index: 9998;
  pointer-events: none;
  overflow: hidden;
}
.transition-leaf {
  position: absolute;
  font-size: 1.5rem;
  opacity: 0;
  pointer-events: none;
  animation: trans-leaf 1.2s ease forwards;
}
@keyframes trans-leaf {
  0%   { opacity: 0; transform: translateY(-20px) rotate(0deg); }
  30%  { opacity: 1; }
  70%  { opacity: 0.7; }
  100% { opacity: 0; transform: translateY(110vh) rotate(540deg); }
}
.transition-drop {
  position: absolute;
  width: 3px;
  border-radius: 0 0 4px 4px;
  background: linear-gradient(to bottom, rgba(66,165,245,0), rgba(66,165,245,0.8));
  opacity: 0;
  animation: trans-rain 1s ease forwards;
}
@keyframes trans-rain {
  0%   { opacity: 0; height: 0; }
  20%  { opacity: 1; }
  100% { opacity: 0; height: 80px; transform: translateY(100vh); }
}
.transition-seed {
  position: absolute;
  font-size: 1.2rem;
  opacity: 0;
  pointer-events: none;
  animation: trans-seed 1.5s ease-out forwards;
}
@keyframes trans-seed {
  0% { opacity: 0; transform: translate(-40px, 40px) rotate(0deg); }
  20% { opacity: 1; }
  100% { opacity: 0; transform: translate(110vw, -30vh) rotate(360deg); }
}
.transition-water {
  position: absolute;
  font-size: 1.3rem;
  opacity: 0;
  pointer-events: none;
  animation: trans-water 1.2s ease-in-out forwards;
}
@keyframes trans-water {
  0% { opacity: 0; transform: translateY(100vh) scale(0.5); }
  35% { opacity: 1; }
  100% { opacity: 0; transform: translateY(-10vh) scale(1.4); }
}
.transition-wind-streak {
  position: absolute;
  height: 2px;
  background: linear-gradient(to right, rgba(255,255,255,0), rgba(255,255,255,0.35), rgba(255,255,255,0));
  pointer-events: none;
  opacity: 0;
  animation: trans-wind 1.1s ease-in-out forwards;
}
@keyframes trans-wind {
  0% { left: -100%; width: 40%; opacity: 0; }
  25% { opacity: 0.8; }
  100% { left: 150%; width: 80%; opacity: 0; }
}
.transition-petal {
  position: absolute;
  font-size: 1.4rem;
  opacity: 0;
  pointer-events: none;
  animation: trans-petal 1.4s ease-out forwards;
}
@keyframes trans-petal {
  0% { opacity: 0; transform: translateY(-20px) translateX(0px) rotate(0deg); }
  20% { opacity: 1; }
  50% { transform: translateY(50vh) translateX(60px) rotate(180deg); }
  100% { opacity: 0; transform: translateY(110vh) translateX(-60px) rotate(360deg); }
}

/* ─────────────────────────────────────────────────────────────
   CARBON CALCULATOR SECTION
───────────────────────────────────────────────────────────── */
#karbon-hesap {
  background: linear-gradient(160deg, #071a0f 0%, #0d2b1a 50%, #051510 100%);
  color: white;
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}
#karbon-hesap .section-title { color: var(--green-light); }
#karbon-hesap .section-subtitle { color: rgba(255,255,255,0.5); }
#karbon-hesap .section-line { background: linear-gradient(90deg, var(--green-dark), var(--green-light)); }

/* What is Carbon Footprint info */
.carbon-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 60px;
}
.carbon-info-card {
  background: rgba(76,175,125,0.07);
  border: 1px solid rgba(76,175,125,0.18);
  border-radius: var(--radius-md);
  padding: 28px 22px;
  transition: var(--transition);
}
.carbon-info-card:hover { background: rgba(76,175,125,0.12); transform: translateY(-4px); }
.carbon-info-card .card-title { color: var(--green-light); }
.carbon-info-card .card-text { color: rgba(255,255,255,0.65); font-size: 0.9rem; }
.carbon-info-card .citation-label { color: rgba(255,255,255,0.3); }
.carbon-info-card .citation-source { color: rgba(255,255,255,0.2); }
.carbon-info-card .citation { border-top-color: rgba(255,255,255,0.08); }

/* Calculator Shell */
.calc-shell {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(76,175,125,0.2);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

/* Step Progress */
.calc-steps-bar {
  display: flex;
  background: rgba(0,0,0,0.3);
  padding: 20px 32px;
  gap: 0;
}
.calc-step-item {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  position: relative;
}
.calc-step-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  width: calc(100% - 44px);
  height: 2px;
  background: rgba(255,255,255,0.1);
  transform: translateY(-50%);
  left: 44px;
  z-index: 0;
}
.step-circle {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  border: 2px solid rgba(255,255,255,0.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  font-weight: 700;
  color: rgba(255,255,255,0.4);
  flex-shrink: 0;
  transition: all 0.4s ease;
  position: relative;
  z-index: 1;
}
.calc-step-item.active .step-circle {
  background: var(--green-mid);
  border-color: var(--green-light);
  color: white;
  box-shadow: 0 0 16px rgba(76,175,125,0.5);
}
.calc-step-item.done .step-circle {
  background: var(--green-dark);
  border-color: var(--green-mid);
  color: var(--green-light);
}
.step-label {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.35);
  font-weight: 500;
  white-space: nowrap;
}
.calc-step-item.active .step-label { color: var(--green-light); }

/* Calculator Body */
.calc-body {
  padding: 40px 48px;
}
.calc-step-panel { display: none; }
.calc-step-panel.active { display: block; animation: fade-in 0.4s ease; }
.calc-step-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.7rem;
  color: white;
  margin-bottom: 8px;
}
.calc-step-subtitle {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.45);
  margin-bottom: 36px;
}

/* Question rows */
.calc-question {
  margin-bottom: 32px;
}
.calc-q-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.calc-q-text {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.8);
  font-weight: 500;
}
.calc-q-value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--green-light);
  min-width: 60px;
  text-align: right;
}
.calc-slider {
  width: 100%;
  -webkit-appearance: none;
  height: 6px;
  border-radius: 3px;
  background: rgba(255,255,255,0.1);
  outline: none;
  cursor: pointer;
}
.calc-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--green-mid), var(--green-light));
  cursor: pointer;
  box-shadow: 0 0 10px rgba(76,175,125,0.5);
  transition: transform 0.15s;
}
.calc-slider::-webkit-slider-thumb:hover { transform: scale(1.2); }
.calc-slider-track {
  position: relative;
}
.calc-slider-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
}
.calc-slider-labels span {
  font-size: 0.7rem;
  color: rgba(255,255,255,0.25);
}
.calc-select {
  width: 100%;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(76,175,125,0.2);
  border-radius: var(--radius-sm);
  color: white;
  padding: 12px 16px;
  font-size: 0.9rem;
  outline: none;
  cursor: pointer;
  transition: var(--transition);
}
.calc-select:focus { border-color: var(--green-light); background: rgba(76,175,125,0.1); }
.calc-select option { background: #0d2b1a; }

/* Nav buttons */
.calc-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.calc-btn {
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}
.calc-btn-next {
  background: linear-gradient(135deg, var(--green-mid), var(--green-light));
  color: white;
  box-shadow: 0 6px 20px rgba(45,122,79,0.35);
}
.calc-btn-next:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(45,122,79,0.5); }
.calc-btn-prev {
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.6);
  border: 1px solid rgba(255,255,255,0.15);
}
.calc-btn-prev:hover { background: rgba(255,255,255,0.1); color: white; }

/* Results Panel */
#calc-results { display: none; }
#calc-results.show { display: block; animation: fade-in 0.6s ease; }

.result-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
  align-items: center;
}
.result-gauge-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.gauge-container {
  position: relative;
  width: 220px;
  height: 220px;
}
.gauge-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}
.gauge-bg { fill: none; stroke: rgba(255,255,255,0.08); stroke-width: 14; }
.gauge-fill {
  fill: none;
  stroke-width: 14;
  stroke-linecap: round;
  stroke-dasharray: 565;
  stroke-dashoffset: 565;
  transition: stroke-dashoffset 2s ease, stroke 1s ease;
}
.gauge-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.gauge-value {
  font-family: 'Playfair Display', serif;
  font-size: 2.8rem;
  font-weight: 900;
  color: white;
  line-height: 1;
}
.gauge-unit { font-size: 0.85rem; color: rgba(255,255,255,0.45); }
.gauge-level {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 20px;
}

.result-breakdown { display: flex; flex-direction: column; gap: 14px; }
.breakdown-item { }
.breakdown-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.65);
  margin-bottom: 6px;
}
.breakdown-bar-bg {
  height: 8px;
  background: rgba(255,255,255,0.08);
  border-radius: 4px;
  overflow: hidden;
}
.breakdown-bar-fill {
  height: 100%;
  border-radius: 4px;
  width: 0;
  transition: width 1.5s ease;
}

.result-comparison {
  background: rgba(255,255,255,0.04);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 32px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  text-align: center;
}
.compare-item {}
.compare-val {
  font-family: 'Playfair Display', serif;
  font-size: 1.8rem;
  font-weight: 900;
  margin-bottom: 4px;
}
.compare-label { font-size: 0.75rem; color: rgba(255,255,255,0.4); }

.result-recs { margin-bottom: 32px; }
.recs-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.2rem;
  color: var(--green-light);
  margin-bottom: 16px;
}
.rec-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.rec-card {
  background: rgba(76,175,125,0.08);
  border: 1px solid rgba(76,175,125,0.2);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
}
.rec-icon { font-size: 2rem; margin-bottom: 10px; }
.rec-title { font-size: 0.85rem; font-weight: 600; color: white; margin-bottom: 6px; }
.rec-desc { font-size: 0.78rem; color: rgba(255,255,255,0.5); line-height: 1.5; }

.calc-restart-btn {
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.6);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 12px 28px;
  border-radius: 50px;
  cursor: pointer;
  font-size: 0.88rem;
  transition: var(--transition);
  margin-top: 24px;
}
.calc-restart-btn:hover { background: rgba(255,255,255,0.1); color: white; }

/* ─────────────────────────────────────────────────────────────
   CLIMATE NEWS SECTION
───────────────────────────────────────────────────────────── */
#haberler {
  background: var(--bg-primary);
  padding: 100px 0;
}
#haberler .section-title { color: var(--text-main); }
#haberler .section-subtitle { color: var(--text-muted); }
#haberler .section-line { background: linear-gradient(90deg, #1565c0, #42a5f5); }

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(66,165,245,0.3); }
.news-card-img {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  position: relative;
  overflow: hidden;
}
.news-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 40%, rgba(10,22,40,0.95) 100%);
}
.news-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.news-tag {
  display: inline-block;
  font-size: 0.67rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 10px;
  align-self: flex-start;
}
.news-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.4;
  margin-bottom: 10px;
}
.news-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 14px;
}
.news-footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
}
.news-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.news-source {
  font-size: 0.7rem;
  color: var(--text-muted);
}
.news-date {
  font-size: 0.68rem;
  color: var(--text-muted);
  opacity: 0.7;
}
.news-read-more {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-color);
  text-decoration: none;
  background: var(--card-bg);
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid var(--accent-color);
  transition: var(--transition);
}
.news-read-more:hover {
  background: var(--accent-color);
  color: white;
}

/* ─────────────────────────────────────────────────────────────
   NATURAL EVENTS TIMELINE
───────────────────────────────────────────────────────────── */
#dogal-olaylar {
  background: linear-gradient(160deg, #1a0a0a 0%, #2d1010 50%, #1a0a0a 100%);
  padding: 100px 0;
  overflow: hidden;
}
#dogal-olaylar .section-title { color: white; }
#dogal-olaylar .section-subtitle { color: rgba(255,255,255,0.45); }
#dogal-olaylar .section-line { background: linear-gradient(90deg, #e65100, #ff8f00); }

.events-scroll-wrap {
  overflow-x: auto;
  padding: 24px 0 48px;
  cursor: grab;
  scrollbar-width: thin;
  scrollbar-color: rgba(230,81,0,0.4) transparent;
}
.events-scroll-wrap::-webkit-scrollbar { height: 4px; }
.events-scroll-wrap::-webkit-scrollbar-track { background: transparent; }
.events-scroll-wrap::-webkit-scrollbar-thumb { background: rgba(230,81,0,0.4); border-radius: 2px; }
.events-track {
  display: flex;
  gap: 0;
  position: relative;
  padding: 80px 60px;
  min-width: max-content;
}
.events-track::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, rgba(230,81,0,0.4), rgba(255,143,0,0.6), rgba(230,81,0,0.4), transparent);
  transform: translateY(-50%);
}
.event-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  width: 220px;
  flex-shrink: 0;
}
.event-item:nth-child(even) { flex-direction: column-reverse; }
.event-item:nth-child(even) .event-card { margin-bottom: 0; margin-top: 16px; }
.event-item:nth-child(odd) .event-card { margin-bottom: 16px; margin-top: 0; }

.event-dot {
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 3px solid;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  animation: event-pulse 3s ease-in-out infinite;
}
@keyframes event-pulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(230,81,0,0.4); }
  50%      { box-shadow: 0 0 0 8px rgba(230,81,0,0); }
}
.event-year {
  font-family: 'Playfair Display', serif;
  font-size: 1rem;
  font-weight: 700;
  color: rgba(255,255,255,0.6);
  margin: 8px 0;
}
.event-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 16px 14px;
  width: 190px;
  text-align: center;
  transition: var(--transition);
}
.event-card:hover { background: rgba(255,255,255,0.1); transform: scale(1.04); }
.event-icon { font-size: 1.8rem; margin-bottom: 6px; }
.event-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: white;
  line-height: 1.3;
  margin-bottom: 6px;
}
.event-location {
  font-size: 0.7rem;
  color: rgba(255,255,255,0.4);
  margin-bottom: 6px;
}
.event-stat {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.4;
  font-style: italic;
}
.event-source {
  font-size: 0.62rem;
  color: rgba(255,255,255,0.2);
  margin-top: 6px;
}
.event-legend {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
}
.event-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.55);
}
.legend-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
}

/* ─────────────────────────────────────────────────────────────
   DOCUMENTARY CENTER
───────────────────────────────────────────────────────────── */
#belgeseller {
  background: linear-gradient(160deg, #0a0a14 0%, #0f0f20 100%);
  padding: 100px 0;
}
#belgeseller .section-title { color: white; }
#belgeseller .section-subtitle { color: rgba(255,255,255,0.45); }
#belgeseller .section-line { background: linear-gradient(90deg, #6a1b9a, #ab47bc); }

.docs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.doc-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
  cursor: pointer;
  background: #111;
}
.doc-card:hover { transform: scale(1.03); box-shadow: 0 20px 60px rgba(0,0,0,0.6); }
.doc-poster {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  position: relative;
  overflow: hidden;
}
.doc-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.4);
  opacity: 0;
  transition: var(--transition);
}
.doc-play-btn span {
  width: 60px; height: 60px;
  border-radius: 50%;
  background: rgba(255,255,255,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: #111;
  box-shadow: 0 0 30px rgba(255,255,255,0.3);
  transform: scale(0.8);
  transition: transform 0.3s ease;
}
.doc-card:hover .doc-play-btn { opacity: 1; }
.doc-card:hover .doc-play-btn span { transform: scale(1); }
.doc-body {
  padding: 20px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}
.doc-meta {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.doc-tag {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 10px;
  background: rgba(171,71,188,0.2);
  color: #ce93d8;
}
.doc-year {
  font-size: 0.7rem;
  color: rgba(255,255,255,0.35);
  align-self: center;
}
.doc-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.1rem;
  color: white;
  margin-bottom: 8px;
  font-weight: 700;
}
.doc-desc {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.6;
  margin-bottom: 14px;
}
.doc-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.doc-rating {
  font-size: 0.75rem;
  color: #ffd54f;
  font-weight: 600;
}
.doc-watch-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, #6a1b9a, #ab47bc);
  color: white;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: 20px;
  transition: var(--transition);
  text-decoration: none;
}
.doc-watch-btn:hover { opacity: 0.85; transform: translateY(-1px); }

/* ─────────────────────────────────────────────────────────────
   RESPONSIVE FEATURES
───────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .carbon-info-grid, .news-grid, .docs-grid { grid-template-columns: repeat(2, 1fr); }
  .result-hero { grid-template-columns: 1fr; }
  .rec-cards { grid-template-columns: 1fr; }
  .result-comparison { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .carbon-info-grid, .news-grid, .docs-grid { grid-template-columns: 1fr; }
  .calc-body { padding: 24px 20px; }
  .calc-steps-bar { padding: 16px 20px; gap: 4px; }
  .step-label { display: none; }
  .result-comparison { grid-template-columns: 1fr; gap: 12px; }
  #sound-player { bottom: 16px; right: 16px; }
}

/* ─────────────────────────────────────────────────────────────
   HAKKIMIZDA / ABOUT US SECTION
───────────────────────────────────────────────────────────── */
#hakkimizda {
  background: linear-gradient(160deg, #041a0a 0%, #0a2e12 50%, #061508 100%);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}
#hakkimizda .section-title { color: var(--green-light); }
#hakkimizda .section-subtitle { color: rgba(255,255,255,0.5); }

/* Floating leaf animations */
.about-bg-canvas {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.about-leaf {
  position: absolute;
  font-size: 2.5rem;
  opacity: 0.12;
  animation: leaf-float 12s ease-in-out infinite;
  user-select: none;
}
.about-leaf-1 { top: 10%; left: 5%; animation-delay: 0s; animation-duration: 14s; }
.about-leaf-2 { top: 25%; right: 8%; animation-delay: 2s; animation-duration: 11s; }
.about-leaf-3 { bottom: 30%; left: 12%; animation-delay: 4s; animation-duration: 16s; }
.about-leaf-4 { top: 60%; right: 15%; animation-delay: 1s; animation-duration: 13s; }
.about-leaf-5 { bottom: 15%; right: 5%; animation-delay: 6s; animation-duration: 18s; }
.about-leaf-6 { top: 45%; left: 2%; animation-delay: 3s; animation-duration: 10s; }
@keyframes leaf-float {
  0%, 100% { transform: translateY(0) rotate(0deg) scale(1); }
  33% { transform: translateY(-25px) rotate(15deg) scale(1.05); }
  66% { transform: translateY(15px) rotate(-10deg) scale(0.95); }
}

/* Project info card */
.about-project-card {
  display: flex;
  gap: 28px;
  align-items: flex-start;
  background: rgba(76,175,125,0.07);
  border: 1px solid rgba(76,175,125,0.2);
  border-radius: 20px;
  padding: 36px 40px;
  margin-bottom: 60px;
  position: relative;
  z-index: 1;
  transition: var(--transition);
}
.about-project-card:hover {
  background: rgba(76,175,125,0.11);
  border-color: rgba(76,175,125,0.35);
}
.about-project-icon {
  font-size: 3.5rem;
  flex-shrink: 0;
  filter: drop-shadow(0 4px 12px rgba(76,175,125,0.4));
}
.about-project-name {
  font-family: 'Playfair Display', serif;
  font-size: 1.6rem;
  font-weight: 900;
  color: white;
  margin-bottom: 12px;
  letter-spacing: 0.03em;
}
.about-project-name span { color: var(--green-light); opacity: 0.7; }
.about-project-desc {
  font-size: 0.92rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.75;
  margin-bottom: 20px;
}
.about-project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.about-meta-tag {
  background: rgba(76,175,125,0.12);
  border: 1px solid rgba(76,175,125,0.25);
  color: var(--green-light);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 20px;
  white-space: nowrap;
}

/* Team Grid */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 60px;
  position: relative;
  z-index: 1;
}
.team-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(76,175,125,0.15);
  border-radius: 20px;
  padding: 36px 24px 28px;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.team-card:hover {
  transform: translateY(-8px);
  border-color: rgba(76,175,125,0.4);
  box-shadow: 0 20px 48px rgba(0,0,0,0.4);
}
.team-card-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: 20px;
  opacity: 0;
  transition: opacity 0.4s;
}
.team-card:hover .team-card-glow { opacity: 1; }
.team-avatar-ring {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  margin: 0 auto 20px;
  padding: 3px;
  background: linear-gradient(135deg, rgba(76,175,125,0.6), rgba(76,175,125,0.1));
  box-shadow: 0 8px 28px rgba(0,0,0,0.3);
}
.team-avatar-bg {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.team-avatar-emoji { font-size: 2.5rem; }
.team-name {
  font-family: 'Playfair Display', serif;
  font-size: 1.2rem;
  font-weight: 800;
  color: white;
  margin-bottom: 8px;
}
.team-role {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--green-light);
  margin-bottom: 14px;
  opacity: 0.85;
}
.team-desc {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.65;
  margin-bottom: 18px;
}
.team-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(76,175,125,0.1);
  border: 1px solid rgba(76,175,125,0.2);
  color: rgba(255,255,255,0.6);
  font-size: 0.72rem;
  padding: 5px 12px;
  border-radius: 20px;
}

/* Mission Statement */
.about-mission {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  background: linear-gradient(135deg, rgba(76,175,125,0.1), rgba(76,175,125,0.03));
  border: 1px solid rgba(76,175,125,0.25);
  border-radius: 20px;
  padding: 36px 40px;
  position: relative;
  z-index: 1;
}
.mission-icon { font-size: 3rem; flex-shrink: 0; margin-top: 4px; }
.mission-content h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.35rem;
  color: var(--green-light);
  margin-bottom: 12px;
}
.mission-content p {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.8;
  margin: 0;
}

/* ─────────────────────────────────────────────────────────────
   İLETİŞİM / CONTACT SECTION
───────────────────────────────────────────────────────────── */
#iletisim {
  background: linear-gradient(160deg, #030d1a 0%, #071525 50%, #030d1a 100%);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}
#iletisim .section-title { color: #42a5f5; }
#iletisim .section-subtitle { color: rgba(255,255,255,0.45); }

/* Animated nature background bubbles */
.contact-nature-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.cn-bubble {
  position: absolute;
  font-size: 2rem;
  opacity: 0;
  animation: cn-rise 15s ease-in-out infinite;
  user-select: none;
}
.cn-b1 { left: 5%; bottom: -10%; animation-delay: 0s; font-size: 2.5rem; }
.cn-b2 { left: 15%; bottom: -10%; animation-delay: 2.5s; font-size: 1.8rem; }
.cn-b3 { left: 30%; bottom: -10%; animation-delay: 5s; font-size: 2rem; }
.cn-b4 { left: 50%; bottom: -10%; animation-delay: 1.5s; font-size: 2.2rem; }
.cn-b5 { left: 65%; bottom: -10%; animation-delay: 4s; font-size: 1.6rem; }
.cn-b6 { left: 78%; bottom: -10%; animation-delay: 3s; font-size: 2.8rem; }
.cn-b7 { left: 88%; bottom: -10%; animation-delay: 6s; font-size: 1.9rem; }
.cn-b8 { left: 42%; bottom: -10%; animation-delay: 7.5s; font-size: 2.1rem; }
@keyframes cn-rise {
  0% { opacity: 0; transform: translateY(0) scale(0.8); }
  10% { opacity: 0.12; }
  80% { opacity: 0.1; }
  100% { opacity: 0; transform: translateY(-110vh) scale(1.1); }
}

/* Contact layout */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 36px;
  align-items: start;
  position: relative;
  z-index: 1;
}

/* Contact info cards (left column) */
.contact-info-col { display: flex; flex-direction: column; gap: 16px; }
.contact-info-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(66,165,245,0.15);
  border-radius: 16px;
  padding: 20px 22px;
  transition: all 0.3s ease;
}
.contact-info-card:hover {
  background: rgba(66,165,245,0.07);
  border-color: rgba(66,165,245,0.3);
  transform: translateX(4px);
}
.ci-icon { font-size: 1.8rem; flex-shrink: 0; }
.ci-body { min-width: 0; }
.ci-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(66,165,245,0.7);
  margin-bottom: 4px;
}
.ci-value {
  font-size: 0.9rem;
  color: white;
  font-weight: 600;
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ci-sub {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.4);
}

/* Contact form card (right column) */
.contact-form-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(66,165,245,0.2);
  border-radius: 24px;
  padding: 40px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.contact-form-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.cf-icon { font-size: 2rem; }
.contact-form-header h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.4rem;
  color: white;
  margin: 0;
}

/* Form fields */
.cf-field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.cf-field {
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.cf-field label {
  font-size: 0.78rem;
  font-weight: 600;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.04em;
}
.cf-field input,
.cf-field textarea {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 12px;
  color: white;
  padding: 14px 16px;
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  transition: all 0.3s;
  resize: vertical;
  width: 100%;
  box-sizing: border-box;
}
.cf-field input::placeholder,
.cf-field textarea::placeholder { color: rgba(255,255,255,0.25); }
.cf-field input:focus,
.cf-field textarea:focus {
  border-color: rgba(66,165,245,0.6);
  background: rgba(66,165,245,0.08);
  box-shadow: 0 0 0 3px rgba(66,165,245,0.12);
}

/* Submit button */
.cf-submit-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 16px 24px;
  background: linear-gradient(135deg, #1565c0, #42a5f5);
  color: white;
  border: none;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 6px 24px rgba(21,101,192,0.35);
  letter-spacing: 0.03em;
  margin-top: 8px;
}
.cf-submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(21,101,192,0.5);
}
.cf-submit-btn:active { transform: scale(0.98); }
.cf-btn-icon { font-size: 1.1rem; }

/* Success message */
.cf-success-msg {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(76,175,125,0.12);
  border: 1px solid rgba(76,175,125,0.3);
  border-radius: 12px;
  padding: 16px 20px;
  margin-top: 16px;
  font-size: 0.88rem;
  color: var(--green-light);
  font-weight: 600;
  animation: fade-in 0.4s ease;
}

/* Responsive — Hakkımızda & İletişim */
@media (max-width: 1024px) {
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-layout { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .team-grid { grid-template-columns: 1fr; }
  .about-project-card { flex-direction: column; padding: 24px; }
  .contact-form-card { padding: 24px 20px; }
  .cf-field-row { grid-template-columns: 1fr; }
  .about-mission { flex-direction: column; padding: 24px; }
}

/* ─────────────────────────────────────────────────────────────
   ENVIRONMENT GALLERY
───────────────────────────────────────────────────────────── */
#galeri {
  background: var(--bg-secondary);
  padding: 100px 0;
}
#galeri .section-title { color: var(--text-main); }
#galeri .section-subtitle { color: var(--text-muted); }
#galeri .section-line { background: linear-gradient(90deg, var(--accent-color), var(--green-light)); }

.gallery-masonry {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 250px;
  cursor: pointer;
}
.gallery-item:nth-child(2), .gallery-item:nth-child(5) {
  grid-row: span 2;
  height: 520px;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.gallery-item:hover img {
  transform: scale(1.1);
}
.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 60%);
  display: flex;
  align-items: flex-end;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.gallery-item:hover .gallery-overlay {
  opacity: 1;
}
.gallery-title {
  color: white;
  font-family: 'Playfair Display', serif;
  font-size: 1.2rem;
  font-weight: 700;
  transform: translateY(10px);
  transition: transform 0.3s ease;
}
.gallery-item:hover .gallery-title {
  transform: translateY(0);
}

@media (max-width: 900px) {
  .gallery-masonry { grid-template-columns: repeat(2, 1fr); }
  .gallery-item:nth-child(2), .gallery-item:nth-child(5) {
    grid-row: span 1;
    height: 250px;
  }
}
@media (max-width: 600px) {
  .gallery-masonry { grid-template-columns: 1fr; }
}