/* =====================================================
   Sürdürülebilirlik.com.tr by Türkçev Çevre - Component Styles
   Buttons, Cards, Forms, and Reusable Components
   ===================================================== */

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  border: 2px solid transparent;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent-500);
  color: var(--primary-900);
  border-color: var(--accent-500);
}

.btn-primary:hover {
  background: var(--accent-400);
  border-color: var(--accent-400);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 255, 136, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--glass-border);
}

.btn-secondary:hover {
  background: var(--glass-bg);
  border-color: var(--accent-500);
  color: var(--accent-500);
}

.btn-outline {
  background: transparent;
  color: var(--accent-500);
  border-color: var(--accent-500);
}

.btn-outline:hover {
  background: var(--accent-500);
  color: var(--primary-900);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
  padding: var(--spacing-sm) var(--spacing-md);
}

.btn-ghost:hover {
  color: var(--accent-500);
}

.btn-sm {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.875rem;
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: 1.125rem;
}

.btn svg {
  width: 20px;
  height: 20px;
}

/* ===== CARDS ===== */
.card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--accent-500);
}

.card-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
}

.card-glass:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.card-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
}

.card-icon svg {
  width: 32px;
  height: 32px;
  fill: var(--primary-900);
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.card-description {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* Service Cards */
.service-card {
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-500), var(--accent-400));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

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

/* Project Cards */
.project-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
}

.project-card-image {
  width: 100%;
  height: 240px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-card-image {
  transform: scale(1.05);
}

.project-card-content {
  padding: var(--spacing-xl);
}

.project-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.project-card-metric {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--accent-500);
  margin-top: var(--spacing-md);
}

.project-card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to top, rgba(10, 22, 40, 0.95), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--spacing-xl);
}

.project-card:hover .project-card-overlay {
  opacity: 1;
}

/* ===== TAGS & BADGES ===== */
.tag {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
}

.tag-accent {
  background: rgba(0, 255, 136, 0.1);
  border-color: rgba(0, 255, 136, 0.3);
  color: var(--accent-500);
}

.tag-carbon {
  background: rgba(45, 52, 54, 0.2);
  border-color: var(--carbon);
  color: var(--carbon);
}

[data-theme="dark"] .tag-carbon {
  color: var(--neutral-300);
}

.tag-water {
  background: rgba(9, 132, 227, 0.1);
  border-color: var(--water);
  color: var(--water);
}

.tag-energy {
  background: rgba(253, 203, 110, 0.1);
  border-color: var(--energy);
  color: var(--energy);
}

.tag-waste {
  background: rgba(162, 155, 254, 0.1);
  border-color: var(--waste);
  color: var(--waste);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: var(--accent-500);
  color: var(--primary-900);
}

/* ===== FORMS ===== */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-md);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-primary);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--accent-500);
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-md) center;
  background-size: 20px;
  padding-right: var(--spacing-3xl);
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  cursor: pointer;
}

.form-checkbox input {
  width: 20px;
  height: 20px;
  accent-color: var(--accent-500);
  cursor: pointer;
}

/* ===== COUNTERS ===== */
.counter-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
}

.counter-item {
  text-align: center;
  padding: var(--spacing-xl);
}

.counter-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.counter-icon svg {
  width: 100%;
  height: 100%;
  fill: var(--accent-500);
}

.counter-value {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}

.counter-value .suffix {
  font-size: 1.5rem;
  color: var(--accent-500);
}

.counter-label {
  font-size: 1rem;
  color: var(--text-secondary);
}

/* ===== TESTIMONIALS ===== */
.testimonial-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  position: relative;
}

.testimonial-quote {
  font-size: 4rem;
  color: var(--accent-500);
  opacity: 0.3;
  position: absolute;
  top: var(--spacing-md);
  left: var(--spacing-lg);
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-text {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  padding-left: var(--spacing-lg);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.testimonial-avatar {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

.testimonial-info h4 {
  font-size: 1rem;
  margin-bottom: var(--spacing-xs);
}

.testimonial-info p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0;
}

/* ===== ACCORDION ===== */
.accordion {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.accordion-item {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.accordion-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  background: transparent;
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
}

.accordion-header:hover {
  color: var(--accent-500);
}

.accordion-icon {
  width: 24px;
  height: 24px;
  transition: transform var(--transition-base);
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.accordion-item.active .accordion-content {
  max-height: 500px;
}

.accordion-body {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== TABS ===== */
.tabs {
  display: flex;
  flex-direction: column;
}

.tab-list {
  display: flex;
  gap: var(--spacing-sm);
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  overflow-x: auto;
}

.tab-button {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.tab-button:hover {
  color: var(--text-primary);
  background: var(--glass-bg);
}

.tab-button.active {
  color: var(--accent-500);
  background: rgba(0, 255, 136, 0.1);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

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

/* ===== SLIDERS ===== */
.slider {
  position: relative;
  overflow: hidden;
}

.slider-track {
  display: flex;
  transition: transform var(--transition-slow);
}

.slider-slide {
  flex: 0 0 100%;
  padding: 0 var(--spacing-md);
}

.slider-nav {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-xl);
}

.slider-dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  background: var(--glass-border);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.slider-dot.active {
  background: var(--accent-500);
  width: 32px;
}

.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  z-index: 10;
}

.slider-arrow:hover {
  background: var(--accent-500);
  border-color: var(--accent-500);
}

.slider-arrow:hover svg {
  fill: var(--primary-900);
}

.slider-arrow svg {
  width: 24px;
  height: 24px;
  fill: var(--text-primary);
}

.slider-prev { left: var(--spacing-md); }
.slider-next { right: var(--spacing-md); }

/* ===== PROGRESS BAR ===== */
.progress {
  height: 8px;
  background: var(--glass-bg);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-500), var(--accent-400));
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 22, 40, 0.8);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  max-width: 600px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(20px);
  transition: transform var(--transition-base);
}

.modal-overlay.active .modal {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--glass-border);
}

.modal-header h3 {
  margin: 0;
}

.modal-close {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--warning-500);
}

.modal-close svg {
  width: 20px;
  height: 20px;
  fill: var(--text-primary);
}

.modal-body {
  padding: var(--spacing-xl);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-md);
  padding: var(--spacing-xl);
  border-top: 1px solid var(--glass-border);
}

/* ===== TIMELINE ===== */
.timeline {
  position: relative;
  padding-left: var(--spacing-3xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--glass-border);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--spacing-2xl);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--spacing-3xl) + 6px);
  top: 8px;
  width: 14px;
  height: 14px;
  border-radius: var(--radius-full);
  background: var(--accent-500);
  border: 3px solid var(--bg-primary);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--accent-500);
  margin-bottom: var(--spacing-sm);
}

.timeline-content h4 {
  margin-bottom: var(--spacing-sm);
}

.timeline-content p {
  color: var(--text-secondary);
  margin: 0;
}

/* ===== PROCESS STEPS ===== */
.process-steps {
  display: flex;
  gap: var(--spacing-md);
  overflow-x: auto;
  padding: var(--spacing-md) 0;
}

.process-step {
  flex: 1;
  min-width: 200px;
  text-align: center;
  padding: var(--spacing-xl);
  position: relative;
}

.process-step::after {
  content: '';
  position: absolute;
  top: 40px;
  right: -20px;
  width: 40px;
  height: 2px;
  background: var(--glass-border);
}

.process-step:last-child::after {
  display: none;
}

.process-number {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
  color: var(--primary-900);
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-lg);
}

.process-step h4 {
  margin-bottom: var(--spacing-sm);
}

.process-step p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0;
}

/* ===== LOGO STRIP ===== */
.logo-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-3xl);
  flex-wrap: wrap;
  padding: var(--spacing-xl) 0;
}

.logo-strip img {
  height: 40px;
  opacity: 0.5;
  filter: grayscale(100%);
  transition: all var(--transition-base);
}

.logo-strip img:hover {
  opacity: 1;
  filter: grayscale(0%);
}

/* ===== NEWSLETTER FORM ===== */
.newsletter-form {
  display: flex;
  gap: var(--spacing-md);
  max-width: 500px;
}

.newsletter-form .form-input {
  flex: 1;
}

/* ===== FILTER BAR ===== */
.filter-bar {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  padding: var(--spacing-lg);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-xl);
}

.filter-group {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.filter-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* ===== TOOLTIP ===== */
.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--primary-900);
  color: var(--neutral-50);
  font-size: 0.75rem;
  border-radius: var(--radius-md);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: 100;
}

.tooltip:hover::after {
  opacity: 1;
  visibility: visible;
  bottom: calc(100% + 8px);
}

/* ===== LOADING SPINNER ===== */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--glass-border);
  border-top-color: var(--accent-500);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

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

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 1;
  transition: opacity var(--transition-base);
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}