/* ----------------------------------------------------------------
   Anketa — design tokens
   World: premium academic / editorial. Ink navy stage, warm paper
   card, bronze-gold accent. Fraunces for question voice, Manrope
   for interface text.
------------------------------------------------------------------- */

:root {
  --ink-950: #0b0e1a;
  --ink-900: #12162a;
  --ink-800: #1a2036;
  --paper-0: #fbf7f0;
  --paper-1: #f3ecdf;
  --paper-line: #e4d9c4;
  --text-900: #211c14;
  --text-600: #5c5544;
  --text-450: #857d68;
  --accent-700: #8a5a12;
  --accent-600: #a06c1c;
  --accent-500: #c9932c;
  --accent-100: #f4e6c8;
  --error-700: #96351f;
  --error-100: #f6e2da;
  --success-700: #3f6b45;

  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 10px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-1: 180ms;
  --dur-2: 320ms;
  --dur-3: 520ms;

  --shadow-card: 0 1px 2px rgba(11, 14, 26, 0.06), 0 24px 48px -20px rgba(11, 14, 26, 0.45);
  --shadow-btn: 0 1px 1px rgba(138, 90, 18, 0.15), 0 10px 20px -10px rgba(138, 90, 18, 0.55);
  --shadow-tile: 0 1px 2px rgba(33, 28, 20, 0.04);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper-0: #fbf7f0;
    --paper-1: #f3ecdf;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--ink-950);
  color: var(--text-900);
  font-family: "Manrope", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

.bg-glow {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(760px 520px at 18% -8%, rgba(201, 147, 44, 0.22), transparent 60%),
    radial-gradient(680px 520px at 100% 8%, rgba(97, 76, 130, 0.16), transparent 55%),
    linear-gradient(180deg, var(--ink-950) 0%, var(--ink-900) 42%, var(--ink-800) 100%);
}

.shell {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px 16px calc(28px + env(safe-area-inset-bottom));
}

/* ---------------- Card ---------------- */

.card {
  width: 100%;
  max-width: 560px;
  background: var(--paper-0);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 30px 26px 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
  min-height: 420px;
}

@media (min-width: 560px) {
  .card {
    padding: 42px 44px 32px;
  }
}

/* ---------------- Progress header ---------------- */

.progress-head {
  display: flex;
  align-items: center;
  gap: 12px;
}

.progress-track {
  position: relative;
  flex: 1;
  height: 5px;
  border-radius: 99px;
  background: var(--paper-line);
  overflow: hidden;
}

.progress-fill {
  position: absolute;
  inset: 0;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--accent-600), var(--accent-500));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur-3) var(--ease-out);
}

.progress-count {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-450);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.icon-btn {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--text-600);
  padding: 6px;
  margin: -6px;
  border-radius: 99px;
  display: inline-flex;
  cursor: pointer;
  transition: background var(--dur-1) var(--ease-out), color var(--dur-1) var(--ease-out);
}
.icon-btn:hover {
  background: var(--paper-1);
  color: var(--text-900);
}
.icon-btn:disabled {
  opacity: 0;
  pointer-events: none;
}
.icon-btn svg {
  width: 18px;
  height: 18px;
  display: block;
}

/* ---------------- Question body ---------------- */

.stage {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-height: 0;
}

.q-wrap {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.q-title {
  font-family: "Alegreya", "Georgia", serif;
  font-optical-sizing: auto;
  font-weight: 600;
  font-size: clamp(21px, 4.4vw, 27px);
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--text-900);
  margin: 0;
}

.q-hint {
  font-size: 13.5px;
  font-style: italic;
  color: var(--text-450);
  margin-top: -10px;
}

.q-error {
  font-size: 13px;
  font-weight: 600;
  color: var(--error-700);
  background: var(--error-100);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  display: none;
}
.q-error.show {
  display: block;
}

/* ---------------- Inputs ---------------- */

.text-input,
.textarea-input {
  width: 100%;
  border: 1.5px solid var(--paper-line);
  background: #fff;
  border-radius: var(--radius-md);
  padding: 13px 15px;
  font: inherit;
  font-size: 16px;
  color: var(--text-900);
  transition: border-color var(--dur-1) var(--ease-out), box-shadow var(--dur-1) var(--ease-out);
}
.text-input::placeholder,
.textarea-input::placeholder {
  color: var(--text-450);
}
.text-input:focus,
.textarea-input:focus {
  outline: none;
  border-color: var(--accent-500);
  box-shadow: 0 0 0 4px var(--accent-100);
}
.textarea-input {
  resize: vertical;
  min-height: 96px;
  line-height: 1.5;
}

.other-field {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur-2) var(--ease-out);
}
.other-field.open {
  grid-template-rows: 1fr;
}
.other-field > div {
  overflow: hidden;
  min-height: 0;
}
.other-field .text-input {
  margin-top: 2px;
  opacity: 0;
  transition: opacity var(--dur-1) var(--ease-out);
}
.other-field.open .text-input {
  opacity: 1;
  transition-delay: 120ms;
}

/* ---------------- Options (tiles) ---------------- */

.options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tile {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 14px;
  border: 1.5px solid var(--paper-line);
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: var(--shadow-tile);
  cursor: pointer;
  transition: border-color var(--dur-1) var(--ease-out), background var(--dur-1) var(--ease-out), transform var(--dur-1) var(--ease-out);
  -webkit-tap-highlight-color: transparent;
}
.tile:hover {
  border-color: var(--accent-500);
}
.tile:active {
  transform: scale(0.99);
}
.tile input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  pointer-events: none;
}
.tile-mark {
  flex: none;
  width: 20px;
  height: 20px;
  border-radius: 999px;
  border: 1.5px solid var(--paper-line);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  transition: border-color var(--dur-1) var(--ease-out), background var(--dur-1) var(--ease-out);
}
.tile input[type="checkbox"] ~ .tile-mark {
  border-radius: 6px;
}
.tile-mark svg {
  width: 12px;
  height: 12px;
  opacity: 0;
  transform: scale(0.6);
  transition: opacity var(--dur-1) var(--ease-out), transform var(--dur-1) var(--ease-out);
}
.tile-label {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text-900);
  line-height: 1.35;
}

.tile.selected {
  border-color: var(--accent-600);
  background: var(--accent-100);
}
.tile.selected .tile-mark {
  background: var(--accent-600);
  border-color: var(--accent-600);
}
.tile.selected .tile-mark svg {
  opacity: 1;
  transform: scale(1);
}

.tile:focus-within {
  outline: none;
  box-shadow: 0 0 0 4px var(--accent-100);
  border-color: var(--accent-500);
}

/* ---------------- Footer nav ---------------- */

.stage-footer {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: auto;
  padding-top: 4px;
}

.btn {
  appearance: none;
  border: none;
  font: inherit;
  font-weight: 700;
  font-size: 15.5px;
  border-radius: var(--radius-md);
  padding: 13px 20px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform var(--dur-1) var(--ease-out), box-shadow var(--dur-1) var(--ease-out), opacity var(--dur-1) var(--ease-out), background var(--dur-1) var(--ease-out);
}
.btn svg {
  width: 17px;
  height: 17px;
}
.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  flex: 1;
  background: linear-gradient(180deg, var(--accent-500), var(--accent-700));
  color: #fff8ec;
  box-shadow: var(--shadow-btn);
}
.btn-primary:hover {
  box-shadow: 0 1px 1px rgba(138, 90, 18, 0.2), 0 14px 26px -10px rgba(138, 90, 18, 0.65);
}
.btn-primary:disabled {
  opacity: 0.45;
  box-shadow: none;
  cursor: not-allowed;
  transform: none;
}

.btn-ghost {
  background: transparent;
  color: var(--text-600);
  padding: 13px 16px;
}
.btn-ghost:hover {
  color: var(--text-900);
}

.btn-primary .spinner {
  display: none;
}
.btn-primary.loading .btn-label,
.btn-primary.loading svg.arrow {
  display: none;
}
.btn-primary.loading .spinner {
  display: inline-flex;
}

.spinner {
  width: 17px;
  height: 17px;
  border-radius: 50%;
  border: 2.2px solid rgba(255, 248, 236, 0.35);
  border-top-color: #fff8ec;
  animation: spin 0.7s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ---------------- Intro screen ---------------- */

.intro {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.intro-mark {
  width: 46px;
  height: 46px;
  color: var(--accent-600);
}

.intro-title {
  font-family: "Alegreya", "Georgia", serif;
  font-weight: 600;
  font-optical-sizing: auto;
  font-size: clamp(26px, 6vw, 33px);
  line-height: 1.22;
  letter-spacing: -0.015em;
  margin: 0;
  color: var(--text-900);
  max-width: 30ch;
}

.intro-body {
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--text-600);
  margin: 0;
  max-width: 46ch;
}

.intro-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  font-size: 13px;
  color: var(--text-450);
  font-weight: 600;
}
.intro-meta span:not(:last-child)::after {
  content: "·";
  margin-left: 10px;
  color: var(--paper-line);
}

.intro-cta {
  margin-top: 4px;
  align-self: flex-start;
  padding: 14px 26px;
}

/* ---------------- Success screen ---------------- */

.success {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  justify-content: center;
  flex: 1;
}

.success-mark {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--success-700);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
.success-mark svg {
  width: 26px;
  height: 26px;
}
.success-mark svg path {
  stroke-dasharray: 24;
  stroke-dashoffset: 24;
  animation: draw 0.5s var(--ease-out) 0.15s forwards;
}
@keyframes draw {
  to {
    stroke-dashoffset: 0;
  }
}

.success-title {
  font-family: "Alegreya", "Georgia", serif;
  font-weight: 600;
  font-size: clamp(23px, 5vw, 28px);
  margin: 0;
  color: var(--text-900);
}

.success-body {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-600);
  max-width: 44ch;
  margin: 0;
}

.success-body + .success-body {
  padding-top: 2px;
  border-top: 1px solid var(--paper-line);
  margin-top: 6px;
}

/* ---------------- Transition between steps ---------------- */

.q-wrap {
  animation: step-in var(--dur-2) var(--ease-out);
}
@keyframes step-in {
  from {
    opacity: 0;
    transform: translateX(14px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}
.q-wrap.dir-back {
  animation-name: step-in-back;
}
@keyframes step-in-back {
  from {
    opacity: 0;
    transform: translateX(-14px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.shake {
  animation: shake 0.36s var(--ease-out);
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  50% { transform: translateX(5px); }
  75% { transform: translateX(-3px); }
}

/* ---------------- Loading / error screens ---------------- */

.status-screen {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  justify-content: center;
  flex: 1;
  color: var(--text-600);
}
.status-screen .btn-primary {
  align-self: flex-start;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

@media (max-width: 380px) {
  .card {
    padding: 24px 18px 20px;
    border-radius: 18px;
  }
}