:root {
  --bg: #fff;
  --primary: #2b425c;
  --secondary: #5abfa6;
  --input-bg: #C8D0E2;
  --input-bg-opacity: rgba(200, 208, 226, 0.15);
  --input-border: #C8D0E226;
  --invalid: #dc3545;
  --valid: #198754;
  --font-sans: 'DM Sans', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --radius: 18px;
  --radius-btn: 14px;
  --shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
  --navbar-h: 56px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  line-height: 1.6;
  background: var(--bg);
  color: var(--primary);
  min-height: 100vh;
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  box-shadow: 0 1px 3px rgba(0,0,0,.08);
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  min-height: var(--navbar-h);
  padding: 0 1rem;
}
.back-btn {
  position: absolute;
  left: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--primary);
  padding: 0.5rem;
  text-decoration: none;
  border: 0;
  background: transparent;
  cursor: pointer;
}
.back-btn.invisible { visibility: hidden; pointer-events: none; }
.back-btn svg { display: block; }
.brand { text-decoration: none; color: var(--primary); font-weight: 600; }
.brand-text { font-size: 1.1rem; }
.brand-logo { display: block; height: 24px; width: auto; }

.app-container {
  max-height: calc(100vh - var(--navbar-h));
  overflow-y: auto;
  padding-bottom: 2rem;
}
.container {
  max-width: 480px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
}

.step { display: block; }
.step.hidden { display: none !important; }

.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255,255,255,0.85);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1rem;
}
.loading-overlay.hidden { display: none !important; }
.loading-box { text-align: center; }
.lottie-box { width: 6rem; height: 6rem; margin: 0 auto; }
.lottie-lg { width: 8rem; height: 8rem; }
.loading-text { font-size: 1.1rem; color: #666; }

.register-header { margin-bottom: 1rem; }
.register-header .title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 0.25rem 0;
}
.register-header .description {
  font-size: 0.85rem;
  font-weight: 400;
  color: #555;
  margin: 0;
}

.form-register { display: flex; flex-direction: column; gap: 1rem; }
.input-group {
  position: relative;
  display: block;
}
.input-icon {
  position: absolute;
  left: 1rem;
  top: 0.95rem;
  transform: none;
  color: var(--primary);
  pointer-events: none;
  z-index: 1;
}
.input-group input.form-control {
  width: 100%;
  padding: 0.875rem 1rem 0.875rem 2.75rem;
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  background: var(--input-bg-opacity);
  font-size: 0.9375rem;
  font-family: inherit;
  transition: border-color .2s, box-shadow .2s;
}
.input-group input.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(43, 66, 92, 0.15);
}
.input-group input.form-control.is-invalid { border-color: var(--invalid); }
.input-group input.form-control.is-valid { border-color: var(--valid); }

.password-wrap { position: relative; }
.password-wrap .form-control { padding-right: 4.75rem; }
.toggle-password {
  position: absolute;
  right: 2.15rem;
  top: 0.55rem;
  transform: none;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.toggle-password:focus { outline: none; }
.hp { position: absolute; left: -9999px; opacity: 0; pointer-events: none; }

.invalid-msg {
  display: block;
  font-size: 0.8rem;
  color: var(--invalid);
  margin-top: 0.35rem;
  margin-left: 0.5rem;
  width: 100%;
}
.invalid-msg:empty { display: none; }
.input-group.has-validation .form-control.is-invalid + .invalid-msg { display: block; }

.form-check {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin: 0.25rem 0;
  flex-wrap: wrap;
}
.form-check input[type="checkbox"] {
  width: 1.25rem;
  height: 1.25rem;
  margin-top: 0.2rem;
  accent-color: var(--primary);
}
.form-check label { font-size: 0.9rem; cursor: pointer; flex: 1; }
.form-check .invalid-msg {
  margin-left: 1.75rem;
  margin-top: 0.1rem;
  width: calc(100% - 1.75rem);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-family: inherit;
  font-weight: 500;
  border: none;
  border-radius: var(--radius-btn);
  cursor: pointer;
  text-decoration: none;
  transition: background .2s, transform .05s;
}
.btn:active { transform: scale(0.98); }
.btn-primary {
  background: var(--primary);
  color: #fff;
  width: 100%;
}
.btn-primary:hover { background: #233550; }
.btn-primary:disabled { opacity: 0.7; cursor: not-allowed; }
.btn-secondary { background: #e9ecef; color: #333; }
.btn-secondary:hover { background: #dee2e6; }
.btn-lg { padding: 0.875rem 1.5rem; font-size: 1.05rem; }
.form-actions { margin-top: 0.5rem; }
.form-actions.fixed-bottom {
  position: sticky;
  bottom: 0;
  padding: 1rem 0 1.5rem;
  background: linear-gradient(transparent, var(--bg) 1rem);
  margin-top: 1.5rem;
}

.offcanvas {
  position: fixed;
  inset: 0;
  z-index: 1050;
  visibility: hidden;
  pointer-events: none;
}
.offcanvas.is-open { visibility: visible; pointer-events: auto; }
.offcanvas.is-open .offcanvas-backdrop {
  opacity: 1;
  pointer-events: auto;
}
.offcanvas.is-open .offcanvas-panel { transform: translateX(0); }
.offcanvas-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.4);
  opacity: 0;
  transition: opacity .25s;
  pointer-events: none;
}
.offcanvas-panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 420px;
  background: var(--bg);
  box-shadow: -4px 0 20px rgba(0,0,0,.15);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform .25s;
}
.offcanvas-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  background: var(--primary);
  color: #fff;
}
.offcanvas-title { margin: 0; font-size: 1.1rem; font-weight: 600; }
.offcanvas-close {
  background: transparent;
  border: 0;
  color: #fff;
  font-size: 1.75rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 .25rem;
  opacity: .9;
}
.offcanvas-close:hover { opacity: 1; }
.offcanvas-body {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.kvkk-iframe {
  width: 100%;
  height: 100%;
  min-height: 400px;
  border: 0;
}
.offcanvas-footer {
  display: flex;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-top: 1px solid #eee;
  background: var(--bg);
}
.offcanvas-footer .btn { flex: 1; }

.otp-form { margin-top: 1rem; }
.otp-inputs {
  display: flex;
  gap: 0.5rem;
  justify-content: stretch;
  flex-wrap: nowrap;
  width: 100%;
  margin-bottom: 0.5rem;
}
.otp-digit {
  flex: 1 1 0;
  min-width: 0;
  height: 3.5rem;
  font-size: 1.5rem;
  font-weight: 600;
  text-align: center;
  border: 1px solid var(--input-border);
  border-radius: 12px;
  background: var(--input-bg-opacity);
  color: var(--primary);
  font-family: inherit;
}
.otp-digit:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(43, 66, 92, 0.2);
}
.otp-digit.is-invalid { border-color: var(--invalid); }
.invalid-msg-inline { display: block; margin-bottom: 0.5rem; }
.otp-resend { margin-top: 0.75rem; }
.resend-link { color: var(--primary); font-size: 0.9rem; text-decoration: none; }
.resend-link:hover { text-decoration: underline; }
.resend-countdown { font-size: 0.9rem; color: #666; }
.resend-link.hidden,
.resend-countdown.hidden { display: none !important; }

.confetti-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.success-animation {
  width: 100%;
  height: 15rem;
  margin: 1rem 0;
}
.contact-cards { margin: 1rem 0; }
.contact-card {
  display: flex;
  align-items: center;
  justify-content: space-evenly;
  background: #fff;
  border-radius: 16px;
  border: 0.5px solid rgba(0,0,0,.06);
  box-shadow: var(--shadow);
  min-height: 60px;
  padding: 0.5rem;
}
.contact-link {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem;
  color: #000;
  text-decoration: none;
  font-size: 0.8rem;
  flex: 1;
  justify-content: center;
}
.contact-link:hover { color: var(--primary); }
.contact-icon { font-size: 1.25rem; }
.contact-divider {
  width: 1px;
  height: 2.5rem;
  background: rgba(0,0,0,.1);
}
.contact-text { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 140px; }

.toast-container { position: fixed; z-index: 9998; }

.input-group:has(input:required:invalid:not(.is-invalid))::after,
.form-check:has(input:required:invalid) label::after {
  content: '*';
  color: var(--invalid);
}

.input-group:has(input:required:invalid:not(.is-invalid))::after {
  position: absolute;
  top: 50%;
  right: 1rem;
  transform: translateY(-50%);
  font-size: 1rem;
  line-height: 1;
  pointer-events: none;
}

.password-wrap:has(input:required:invalid:not(.is-invalid))::after {
  right: 1rem;
}

.form-check:has(input:required:invalid) label::after {
  margin-left: 0.15rem;
}

@media (min-width: 480px) {
  .container { padding: 1.5rem; }
  .otp-digit { height: 3.75rem; font-size: 1.75rem; }
}