:root {
  --bg-deep: #050b14;
  --bg-mid: #0a1628;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-active: #1d4ed8;
  --text-hero: #f1f5f9;
  --text-muted: #94a3b8;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-secondary: #475569;
  --error: #dc2626;
  --radius-lg: 16px;
  --radius-md: 10px;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
  --font: "DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  background: #f8fafc;
  min-height: 100dvh;
}

.hero {
  position: relative;
  color: var(--text-hero);
  padding: clamp(2rem, 6vw, 3.5rem) clamp(1.25rem, 5vw, 2rem) clamp(2.5rem, 8vw, 4rem);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 120% 80% at 50% -20%, rgba(59, 130, 246, 0.35), transparent 55%),
    radial-gradient(ellipse 80% 50% at 100% 50%, rgba(99, 102, 241, 0.2), transparent 50%),
    radial-gradient(ellipse 60% 40% at 0% 80%, rgba(14, 165, 233, 0.15), transparent 45%),
    linear-gradient(165deg, var(--bg-deep) 0%, var(--bg-mid) 45%, #0f2744 100%);
}

.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black 0%, transparent 85%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  max-width: 36rem;
  margin: 0 auto;
  text-align: center;
}

.hero__logo {
  margin: 0 auto 1.25rem;
  display: block;
  width: fit-content;
  max-width: 100%;
}

.hero__logo-img {
  display: block;
  height: auto;
  max-height: 5rem;
  width: auto;
  max-width: min(15rem, 55vw);
  object-fit: contain;
}

.hero__title {
  margin: 0 0 0.75rem;
  font-size: clamp(1.5rem, 5vw, 1.875rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.hero__tagline {
  margin: 0 0 1rem;
  font-size: clamp(0.9375rem, 2.8vw, 1.0625rem);
  font-weight: 500;
  color: #cbd5e1;
  line-height: 1.45;
}

.hero__intro {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.main {
  position: relative;
  margin-top: -1.5rem;
  padding: 0 clamp(1rem, 4vw, 1.5rem) clamp(2.5rem, 8vw, 4rem);
}

.form-section {
  position: relative;
  max-width: 32rem;
  margin: 0 auto;
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: clamp(1.5rem, 4vw, 2rem);
  border: 1px solid var(--border);
}

.form-submitting {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10000;
  box-sizing: border-box;
  width: max(100vw, 3000px);
  min-width: 3000px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: linear-gradient(
    180deg,
    rgba(15, 23, 42, 0.38) 0%,
    rgba(15, 23, 42, 0.52) 100%
  );
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 0;
}

.form-submitting[hidden] {
  display: none;
}

.form-submitting__panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
  padding: 1.35rem 1.75rem 1.5rem;
  max-width: 16rem;
  width: 100%;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 14px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.form-submitting__spinner {
  width: 2.5rem;
  height: 2.5rem;
  border: 3px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: form-submitting-spin 0.75s linear infinite;
}

.form-submitting__text {
  margin: 0;
  font-size: 0.9375rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.95);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

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

@media (prefers-reduced-motion: reduce) {
  .form-submitting__spinner {
    animation-duration: 1.4s;
    border-top-color: #fff;
    opacity: 0.9;
  }
}

.form-section__head {
  margin-bottom: 1.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}

.form-section__title {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

.form-section__subtitle {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.survey-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.req {
  color: var(--error);
  font-weight: 600;
}

.field__label {
  display: block;
  margin-bottom: 0.375rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
}

.field__input {
  width: 100%;
  padding: 0.75rem 0.875rem;
  font: inherit;
  font-size: 1rem;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: #fff;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field__input:hover {
  border-color: #cbd5e1;
}

.field__input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.field__input.field__input--invalid {
  border-color: var(--error);
}

.field__input.field__input--invalid:focus {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.15);
}

select.field__input {
  cursor: pointer;
  padding-right: 2rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23475569' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  appearance: none;
}

.phone-row {
  display: flex;
  gap: 0.5rem;
  align-items: stretch;
}

.phone-row__code {
  flex: 0 1 46%;
  min-width: 0;
  max-width: 6.8rem;
  font-family: var(--font), "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", sans-serif;
}

.phone-row__number {
  flex: 1;
  min-width: 0;
}

@media (min-width: 400px) {
  .phone-row__code {
    max-width: 12.5rem;
  }
}

.field__error {
  display: block;
  min-height: 1.25rem;
  margin-top: 0.25rem;
  font-size: 0.8125rem;
  color: var(--error);
}

fieldset.field {
  margin: 0;
  padding: 0;
  border: none;
}

.field--radios legend {
  padding: 0;
}

.radio-list {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.radio {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  cursor: pointer;
  font-size: 0.9375rem;
  color: var(--text);
  line-height: 1.4;
}

.radio input {
  margin-top: 0.2rem;
  flex-shrink: 0;
  width: 1.125rem;
  height: 1.125rem;
  accent-color: var(--accent);
}

.field--other {
  padding-top: 0.25rem;
}

.form-alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
  font-size: 0.875rem;
}

.btn-submit {
  margin-top: 0.5rem;
  width: 100%;
  min-height: 3rem;
  padding: 0.875rem 1.25rem;
  font: inherit;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-hover) 100%);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.35);
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}

.btn-submit:hover {
  background: linear-gradient(180deg, #4f8ff7 0%, var(--accent-hover) 100%);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
}

.btn-submit:active {
  transform: scale(0.98);
  background: var(--accent-active);
}

.btn-submit:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

.success-panel {
  text-align: center;
  padding: 2rem 1rem;
}

.success-panel__text {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 600;
  color: #15803d;
}

.result-dialog {
  margin: auto;
  padding: 0;
  border: none;
  border-radius: 20px;
  box-sizing: border-box;
  width: min(35rem, calc(100vw - 4rem));
  background: var(--surface);
  box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.35);
  overflow: hidden;
}

.result-dialog::backdrop {
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(2px);
}

.result-dialog__inner {
  padding: 0.5rem;
}

.result-dialog[open] .result-dialog__inner {
  animation: result-dialog-in 0.38s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes result-dialog-in {
  from {
    opacity: 0;
    transform: scale(0.96) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.result-dialog__icon-success {
  display: none;
}

.result-dialog--success {
  width: min(24rem, calc(100vw - 4rem));
  background: linear-gradient(165deg, #ecfdf5 0%, #f0fdf4 28%, #ffffff 55%);
  border: 1px solid rgba(16, 185, 129, 0.22);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.7) inset,
    0 28px 56px -16px rgba(5, 150, 105, 0.22),
    0 12px 24px -8px rgba(15, 23, 42, 0.12);
}

.result-dialog--success .result-dialog__inner {
  padding: 2rem 1.75rem 1.5rem;
  text-align: center;
}

.result-dialog--success .result-dialog__icon-success {
  display: block;
}

.result-dialog__check-ring {
  width: 4.25rem;
  height: 4.25rem;
  margin: 0 auto 1.25rem;
  border-radius: 50%;
  background: linear-gradient(145deg, #d1fae5 0%, #a7f3d0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    0 10px 28px rgba(5, 150, 105, 0.28),
    0 0 0 1px rgba(255, 255, 255, 0.6) inset;
  animation: result-check-pop 0.55s cubic-bezier(0.34, 1.4, 0.64, 1) 0.08s both;
}

@keyframes result-check-pop {
  from {
    opacity: 0;
    transform: scale(0.5);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.result-dialog__check-svg {
  width: 2.75rem;
  height: 2.75rem;
  color: #047857;
}

.result-dialog__check-circle {
  opacity: 0.35;
  stroke-dasharray: 151;
  stroke-dashoffset: 151;
  animation: result-draw-circle 0.45s ease forwards 0.15s;
}

.result-dialog__check-mark {
  stroke-dasharray: 32;
  stroke-dashoffset: 32;
  animation: result-draw-check 0.35s ease forwards 0.42s;
}

@keyframes result-draw-circle {
  to {
    stroke-dashoffset: 0;
  }
}

@keyframes result-draw-check {
  to {
    stroke-dashoffset: 0;
  }
}

.result-dialog__title {
  margin: 0 0 0.75rem;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

.result-dialog__title--success {
  color: #065f46;
  font-size: 1.3125rem;
  letter-spacing: -0.03em;
}

.result-dialog--success .result-dialog__title--success {
  margin-bottom: 0.625rem;
}

.result-dialog__title--error {
  color: #b91c1c;
}

.result-dialog__msg {
  margin: 0 0 0.75rem;
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--text-secondary);
  word-break: break-word;
}

.result-dialog--success .result-dialog__msg {
  margin-bottom: 1.125rem;
  color: #166534;
  font-size: 1rem;
  line-height: 1.6;
}

.result-dialog__meta {
  margin: 0 0 1rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.result-dialog__btn {
  width: 100%;
  margin-top: 0.25rem;
  min-height: 2.75rem;
  padding: 0.625rem 1rem;
  font: inherit;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-hover) 100%);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, filter 0.12s ease;
}

.result-dialog__btn:hover {
  background: linear-gradient(180deg, #4f8ff7 0%, var(--accent-hover) 100%);
}

.result-dialog__btn:active {
  background: var(--accent-active);
  transform: scale(0.98);
}

.result-dialog--success .result-dialog__btn {
  margin-top: 0.5rem;
  background: linear-gradient(180deg, #10b981 0%, #059669 100%);
  box-shadow: 0 4px 16px rgba(5, 150, 105, 0.38);
}

.result-dialog--success .result-dialog__btn:hover {
  background: linear-gradient(180deg, #34d399 0%, #10b981 100%);
  filter: brightness(1.02);
}

.result-dialog--success .result-dialog__btn:active {
  background: #047857;
  transform: scale(0.98);
}

@media (prefers-reduced-motion: reduce) {
  .result-dialog[open] .result-dialog__inner,
  .result-dialog__check-ring {
    animation: none;
  }

  .result-dialog__check-circle,
  .result-dialog__check-mark {
    animation: none;
    stroke-dashoffset: 0;
  }

  .result-dialog__check-circle {
    opacity: 0.35;
  }
}

@media (min-width: 480px) {
  .main {
    margin-top: -2rem;
  }
}