/* ============================================================
   SMILE BABY v2 — Reusable Components
   ============================================================ */

/* ── Section Title ────────────────────────────────────── */
.section-title {
  text-align: center;
  margin-bottom: var(--sp-12);
}

.section-title h2 {
  font-size: var(--fs-3xl);
  color: var(--ink-dark);
  margin-bottom: var(--sp-4);
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--primary);
  border-radius: var(--radius-full);
}

.section-title p {
  max-width: 600px;
  margin: var(--sp-6) auto 0;
  color: var(--ink-soft);
  font-size: var(--fs-md);
}

/* ── Buttons ──────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 12px 28px;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  font-weight: var(--fw-semibold);
  line-height: 1;
  border: 2px solid transparent;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.15);
  transform: translateX(-100%);
  transition: transform var(--duration-base) var(--ease-default);
}

.btn:hover::before {
  transform: translateX(0);
}

.btn:active {
  transform: scale(0.97);
}

/* Primary (green filled) */
.btn-primary {
  background: var(--primary);
  color: #FFFFFF;
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  box-shadow: var(--shadow-primary);
}

/* Outline */
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #FFFFFF;
  box-shadow: var(--shadow-primary);
}

/* Accent (red filled) */
.btn-accent {
  background: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
}

.btn-accent:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  box-shadow: 0 8px 20px rgba(227, 24, 55, 0.25);
}

/* White / Ghost */
.btn-white {
  background: var(--white);
  color: var(--primary);
  border-color: #FFFFFF;
}

.btn-white:hover {
  background: transparent;
  color: #FFFFFF;
  border-color: #FFFFFF;
}

/* Large */
.btn-lg {
  padding: 16px 36px;
  font-size: var(--fs-md);
}

/* Small */
.btn-sm {
  padding: 8px 20px;
  font-size: var(--fs-sm);
}

/* Icon-only button */
.btn-icon {
  padding: 12px;
  border-radius: var(--radius-full);
  width: 44px;
  height: 44px;
}

/* ── Cards ────────────────────────────────────────────── */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: var(--transition-base);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
}

/* Service Card */
.service-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--sp-8);
  box-shadow: var(--shadow-card);
  transition: var(--transition-base);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary);
  transform: scaleX(0);
  transition: transform var(--duration-base) var(--ease-default);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
}

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

.service-card .service-icon {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-xl);
  background: var(--primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--sp-5);
  font-size: 2rem;
  color: var(--primary);
  transition: var(--transition-base);
}

.service-card:hover .service-icon {
  background: var(--primary);
  color: #FFFFFF;
  transform: scale(1.1);
}

.service-card h3 {
  font-family: var(--font-body);
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--sp-3);
  color: var(--ink);
}

.service-card p {
  font-size: var(--fs-sm);
  color: var(--ink-soft);
  line-height: var(--lh-relaxed);
}

.service-card .service-link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  margin-top: var(--sp-4);
  color: var(--primary);
  font-weight: var(--fw-medium);
  font-size: var(--fs-sm);
  transition: var(--transition-fast);
}

.service-card .service-link:hover {
  gap: var(--sp-2);
  color: var(--primary-dark);
}

/* Doctor Card */
.doctor-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition-base);
}

.doctor-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
}

.doctor-card .doctor-photo {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-default);
}

.doctor-card:hover .doctor-photo {
  transform: scale(1.05);
}

.doctor-card .doctor-photo-wrapper {
  overflow: hidden;
  position: relative;
}

.doctor-card .doctor-photo-wrapper::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: linear-gradient(to top, rgba(255,255,255,0.9), transparent);
}

.doctor-card .doctor-info {
  padding: var(--sp-5) var(--sp-6);
  text-align: center;
}

.doctor-card .doctor-name {
  font-family: var(--font-body);
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  color: var(--ink);
  margin-bottom: var(--sp-1);
}

.doctor-card .doctor-specialty {
  font-size: var(--fs-sm);
  color: var(--primary);
  font-weight: var(--fw-medium);
  margin-bottom: var(--sp-3);
}

.doctor-card .doctor-exp {
  font-size: var(--fs-xs);
  color: var(--ink-soft);
}

/* News Card */
.news-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition-base);
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
}

.news-card .news-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-default);
}

.news-card:hover .news-img {
  transform: scale(1.05);
}

.news-card .news-img-wrapper {
  overflow: hidden;
}

.news-card .news-body {
  padding: var(--sp-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-card .news-meta {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-size: var(--fs-xs);
  color: var(--ink-soft);
  margin-bottom: var(--sp-3);
}

.news-card .news-date {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
}

.news-card .news-category {
  background: var(--primary-bg);
  color: var(--primary);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-weight: var(--fw-medium);
}

.news-card h3 {
  font-family: var(--font-body);
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  line-height: var(--lh-snug);
  margin-bottom: var(--sp-3);
  color: var(--ink);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card p {
  font-size: var(--fs-sm);
  color: var(--ink-soft);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.news-card .news-link {
  margin-top: var(--sp-4);
  color: var(--primary);
  font-weight: var(--fw-medium);
  font-size: var(--fs-sm);
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  transition: var(--transition-fast);
}

.news-card .news-link:hover {
  gap: var(--sp-2);
  color: var(--primary-dark);
}

/* ── Badges ───────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  padding: 4px 12px;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-full);
  line-height: 1.4;
  white-space: nowrap;
}

.badge-primary {
  background: var(--primary-bg);
  color: var(--primary-dark);
}

.badge-accent {
  background: var(--accent-bg);
  color: var(--accent-dark);
}

.badge-success {
  background: rgba(22, 163, 74, 0.1);
  color: #15803D;
}

.badge-warning {
  background: rgba(245, 158, 11, 0.1);
  color: #B45309;
}

.badge-info {
  background: rgba(14, 165, 233, 0.1);
  color: #0369A1;
}

.badge-neutral {
  background: var(--cream);
  color: var(--ink-soft);
}

/* ── Stat Card ────────────────────────────────────────── */
.stat-card {
  background: var(--white);
  padding: var(--sp-6) var(--sp-8);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--primary);
  box-shadow: var(--shadow-card);
  transition: var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.stat-card .stat-number {
  font-family: var(--font-heading);
  font-size: var(--fs-4xl);
  font-weight: var(--fw-bold);
  color: var(--primary);
  line-height: 1;
  margin-bottom: var(--sp-2);
}

.stat-card .stat-label {
  font-size: var(--fs-sm);
  color: var(--ink-soft);
  font-weight: var(--fw-medium);
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
}

/* ── FAQ Accordion ────────────────────────────────────── */
.faq-item {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  margin-bottom: var(--sp-4);
  overflow: hidden;
  border: 1px solid var(--line);
  transition: var(--transition-base);
}

.faq-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.faq-item.active {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-5) var(--sp-6);
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  color: var(--ink);
  gap: var(--sp-4);
  transition: var(--transition-fast);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--duration-base) var(--ease-default);
}

.faq-question .faq-icon::before {
  content: '+';
  font-size: var(--fs-xl);
  font-weight: var(--fw-light);
  color: var(--primary);
  line-height: 1;
}

.faq-item.active .faq-question .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-slow) var(--ease-default),
              padding var(--duration-base) var(--ease-default);
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding: 0 var(--sp-6) var(--sp-6);
  color: var(--ink-soft);
  line-height: var(--lh-relaxed);
  font-size: var(--fs-base);
}

/* ── Forms ────────────────────────────────────────────── */
.form-group {
  margin-bottom: var(--sp-5);
}

.form-label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--ink);
  margin-bottom: var(--sp-2);
}

.form-label .required {
  color: var(--accent);
  margin-left: 2px;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  font-size: var(--fs-base);
  color: var(--ink);
  background: var(--white);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--ink-soft);
  opacity: 0.6;
}

.form-input:hover,
.form-textarea:hover,
.form-select:hover {
  border-color: var(--line-2);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-bg);
}

.form-input.error,
.form-textarea.error,
.form-select.error {
  border-color: var(--error);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.08);
}

.form-error {
  font-size: var(--fs-xs);
  color: var(--error);
  margin-top: var(--sp-1);
}

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

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2364748B' d='M1.41.59 6 5.17 10.59.59 12 2 6 8 0 2z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 44px;
}

.form-checkbox,
.form-radio {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  cursor: pointer;
  font-size: var(--fs-sm);
  color: var(--ink);
}

.form-checkbox input,
.form-radio input {
  accent-color: var(--primary);
  width: 18px;
  height: 18px;
}

/* ── Modal ────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-base);
  padding: var(--sp-6);
}

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

.modal-content {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(20px) scale(0.97);
  transition: transform var(--duration-base) var(--ease-out);
}

.modal-overlay.active .modal-content {
  transform: translateY(0) scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-6);
  border-bottom: 1px solid var(--line);
}

.modal-header h3 {
  font-family: var(--font-body);
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  margin-bottom: 0;
}

.modal-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--ink-soft);
  transition: var(--transition-fast);
  font-size: var(--fs-xl);
}

.modal-close:hover {
  background: var(--cream);
  color: var(--ink);
}

.modal-body {
  padding: var(--sp-6);
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-6);
  border-top: 1px solid var(--line);
}

/* ── Slider ───────────────────────────────────────────── */
.slider-container {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

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

.slider-slide {
  min-width: 100%;
  flex-shrink: 0;
}

.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  cursor: pointer;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-md);
}

.slider-btn:hover {
  background: var(--white);
  box-shadow: var(--shadow-lg);
}

.slider-btn.prev { left: 16px; }
.slider-btn.next { right: 16px; }

.slider-dots {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  margin-top: var(--sp-5);
}

.slider-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  border: none;
  background: var(--line);
  cursor: pointer;
  transition: var(--transition-fast);
  padding: 0;
}

.slider-dot.active {
  background: var(--primary);
  width: 28px;
}

/* ── Wave Divider ─────────────────────────────────────── */
.wave-divider {
  position: relative;
  width: 100%;
  overflow: hidden;
  line-height: 0;
}

.wave-divider svg {
  position: relative;
  display: block;
  width: calc(100% + 1.3px);
  height: 60px;
}

.wave-divider .wave-fill {
  fill: var(--cream);
}

.wave-divider.wave-white .wave-fill {
  fill: var(--white);
}

.wave-divider.wave-primary .wave-fill {
  fill: var(--primary);
}

.wave-divider.flip {
  transform: rotate(180deg);
}

/* ── Top Bar ──────────────────────────────────────────── */
.top-bar {
  background: var(--primary-dark);
  color: #FFFFFF;
  font-size: var(--fs-xs);
  padding: var(--sp-2) 0;
}

.top-bar .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.top-bar-info {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
}

.top-bar-info a {
  color: rgba(255, 255, 255, 0.85);
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  transition: var(--transition-fast);
}

.top-bar-info a:hover {
  color: #FFFFFF;
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

/* ── Language Switcher ────────────────────────────────── */
.lang-switcher {
  position: relative;
}

.lang-switcher-toggle {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  cursor: pointer;
  background: rgba(255, 255, 255, 0.1);
  transition: var(--transition-fast);
}

.lang-switcher-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #FFFFFF;
}

.lang-switcher-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 140px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: var(--transition-fast);
  z-index: var(--z-dropdown);
  overflow: hidden;
}

.lang-switcher.open .lang-switcher-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 10px 16px;
  font-size: var(--fs-sm);
  color: var(--ink);
  cursor: pointer;
  transition: var(--transition-fast);
  width: 100%;
  background: none;
  border: none;
  text-align: left;
}

.lang-option:hover {
  background: var(--cream);
  color: var(--primary);
}

.lang-option.active {
  color: var(--primary);
  font-weight: var(--fw-semibold);
}

/* ── Contact Cards ────────────────────────────────────── */
.c-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: flex-start;
  gap: var(--sp-4);
  transition: var(--transition-base);
}

.c-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.c-card .c-card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: var(--primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.4rem;
  color: var(--primary);
}

.c-card .c-card-body h4 {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  font-weight: var(--fw-semibold);
  color: var(--ink);
  margin-bottom: var(--sp-1);
}

.c-card .c-card-body p {
  font-size: var(--fs-sm);
  color: var(--ink-soft);
  margin-bottom: 0;
}

.c-card .c-card-body a {
  color: var(--primary);
  font-weight: var(--fw-medium);
}

/* ── Career Banner ────────────────────────────────────── */
.career-banner {
  position: relative;
  padding: var(--sp-16) 0;
  background-color: transparent;
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  color: #FFFFFF;
}

.career-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 0;
}

.career-banner .wrap {
  position: relative;
  z-index: 1;
}

.career-banner h2 {
  color: #FFFFFF;
  font-size: var(--fs-3xl);
}

.career-banner p {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--fs-lg);
  max-width: 600px;
}

/* ── Alert Boxes ──────────────────────────────────────── */
.alert {
  padding: var(--sp-4) var(--sp-5);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  margin-bottom: var(--sp-4);
}

.alert-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 1px;
}

.alert-success {
  background: rgba(22, 163, 74, 0.08);
  color: #15803D;
  border: 1px solid rgba(22, 163, 74, 0.2);
}

.alert-error {
  background: rgba(220, 38, 38, 0.08);
  color: #B91C1C;
  border: 1px solid rgba(220, 38, 38, 0.2);
}

.alert-warning {
  background: rgba(245, 158, 11, 0.08);
  color: #B45309;
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.alert-info {
  background: rgba(14, 165, 233, 0.08);
  color: #0369A1;
  border: 1px solid rgba(14, 165, 233, 0.2);
}

/* ── Glassmorphism Panel ──────────────────────────────── */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

/* ── Back to Top Button ───────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--primary);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-sticky);
  box-shadow: var(--shadow-primary);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: var(--transition-base);
  cursor: pointer;
  border: none;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-4px);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

/* ── Modal (Qabul Formasi) ────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  padding: 20px;
}
.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}
.modal-content {
  background: var(--white);
  width: 100%;
  max-width: 450px;
  border-radius: var(--radius-xl);
  padding: 30px;
  position: relative;
  transform: translateY(20px);
  transition: all 0.3s ease;
  box-shadow: var(--shadow-2xl);
}
.modal-overlay.active .modal-content {
  transform: translateY(0);
}
.modal-close {
  position: absolute;
  top: 15px;
  right: 15px;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--ink-soft);
  cursor: pointer;
  line-height: 1;
  transition: color 0.2s;
}
.modal-close:hover {
  color: var(--error);
}
.modal-title {
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  color: var(--ink-dark);
  margin-bottom: 5px;
}
.modal-desc {
  font-size: var(--fs-sm);
  color: var(--ink-soft);
  margin-bottom: 20px;
}

/* App-like Mobile Bottom Nav */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: var(--white);
  box-shadow: 0 -5px 20px rgba(0,0,0,0.05);
  z-index: 1000;
  padding: 10px 15px;
  padding-bottom: env(safe-area-inset-bottom, 15px);
  border-top: 1px solid var(--line);
}
.mobile-bottom-nav .nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: var(--ink-soft);
  text-decoration: none;
  flex: 1;
  font-size: 0.75rem;
  font-weight: 600;
  transition: all 0.2s ease;
}
.mobile-bottom-nav .nav-item.active {
  color: var(--primary);
}
.mobile-bottom-nav .nav-item svg {
  width: 22px;
  height: 22px;
}



/* Instagram Button */
.btn-instagram { border: 1.5px solid transparent; background: linear-gradient(var(--white), var(--white)) padding-box, linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888) border-box; color: #dc2743; display: inline-flex; align-items: center; gap: 8px; font-weight: 700; } .btn-instagram:hover { background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888); color: white; border-color: transparent; } .btn-instagram svg { fill: url(#ig-grad); transition: 0.3s; } .btn-instagram:hover svg { fill: currentColor; } .dark-theme .btn-instagram { background: linear-gradient(var(--ink-dark), var(--ink-dark)) padding-box, linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888) border-box; }