/* ═══════════════════════════════════════════════════════════════════════
   SOGOIAN PERSONALITY ASSESSMENT — DESIGN SYSTEM
   Dark nostalgic psychological terminal. Mobile-first.
   ═══════════════════════════════════════════════════════════════════════ */

/* ── 1. CSS VARIABLES ────────────────────────────────────────────────── */
:root {
  /* Color palette */
  --bg-primary:       #0d0d0d;
  --bg-secondary:     #1a1a1a;
  --bg-tertiary:      #242424;
  --bg-card:          #141414;

  --accent-copper:    #7a5c3a;
  --accent-copper-lt: #a07848;
  --accent-terminal:  #4a7c59;
  --accent-terminal-lt: #5e9e70;
  --accent-danger:    #7a3a3a;

  --text-primary:     #e8e8e0;
  --text-secondary:   #a0a098;
  --text-dim:         #585850;
  --text-accent:      #8fbc8f;

  --border-color:     #2a2a2a;
  --border-accent:    #4a4a3a;

  /* Typography */
  --font-display:  'VT323', monospace;
  --font-ui:       'Space Mono', monospace;
  --font-body:     'Inter', sans-serif;

  /* Spacing scale */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  40px;
  --space-2xl: 64px;

  /* Sizing */
  --touch-target: 52px;
  --border-radius: 2px;
  --border-radius-lg: 4px;

  /* Animation */
  --transition-fast: 120ms ease;
  --transition-base: 240ms ease;
  --transition-slow: 400ms ease;
}

/* ── 2. RESET & BASE ─────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* ── 3. SCAN-LINE OVERLAY ────────────────────────────────────────────── */
.scan-lines {
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.18) 2px,
    rgba(0, 0, 0, 0.18) 4px
  );
  pointer-events: none;
  z-index: 100;
  opacity: 0.6;
}

/* ── 4. SCREEN MANAGEMENT ────────────────────────────────────────────── */
.screen {
  display: none;
  min-height: 100dvh;
  min-height: 100vh; /* fallback for browsers without dvh support */
  min-height: 100dvh;
  position: relative;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.screen--active {
  display: flex;
  flex-direction: column;
}

/* ── 5. LANDING SCREEN ───────────────────────────────────────────────── */
.landing__container {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 100dvh;
  padding: var(--space-xl) var(--space-lg);
  max-width: 480px;
  margin: 0 auto;
  width: 100%;
}

.landing__header {
  padding-top: var(--space-xl);
}

.landing__label {
  font-family: var(--font-ui);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  margin-bottom: var(--space-md);
  text-transform: uppercase;
}

.landing__title {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 14vw, 5.5rem);
  line-height: 0.95;
  color: var(--text-primary);
  letter-spacing: 0.02em;
  margin-bottom: var(--space-sm);
}

.landing__cursor {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--accent-terminal);
  animation: cursor-blink 1.1s step-end infinite;
  margin-top: var(--space-sm);
}

@keyframes cursor-blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.landing__body {
  padding: var(--space-xl) 0;
}

.landing__tagline {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  line-height: 1.9;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  margin-bottom: var(--space-md);
}

.landing__sub {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--accent-copper);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.landing__footer {
  padding-bottom: var(--space-xl);
}

.landing__disclaimer {
  margin-top: var(--space-md);
  font-family: var(--font-ui);
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  line-height: 1.8;
  text-align: center;
}

/* ── 6. BUTTONS ──────────────────────────────────────────────────────── */
.btn {
  display: block;
  width: 100%;
  min-height: var(--touch-target);
  padding: var(--space-md) var(--space-lg);
  font-family: var(--font-ui);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-align: center;
  border-radius: var(--border-radius);
  transition: background-color var(--transition-fast),
              color var(--transition-fast),
              border-color var(--transition-fast),
              transform var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.btn:active {
  transform: scale(0.98);
}

.btn--primary {
  background-color: var(--accent-terminal);
  color: var(--bg-primary);
  border: 1px solid var(--accent-terminal);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background-color: var(--accent-terminal-lt);
  border-color: var(--accent-terminal-lt);
  outline: none;
}

.btn--ghost {
  background-color: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border-color);
  margin-top: var(--space-md);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  color: var(--text-secondary);
  border-color: var(--border-accent);
  outline: none;
}

/* ── 7. QUIZ SCREEN ──────────────────────────────────────────────────── */
#screen-quiz {
  flex-direction: column;
}

.quiz__header {
  padding: var(--space-md) var(--space-lg) 0;
  max-width: 480px;
  margin: 0 auto;
  width: 100%;
}

.quiz__progress-track {
  height: 2px;
  background-color: var(--bg-tertiary);
  border-radius: 1px;
  overflow: hidden;
  margin-bottom: var(--space-sm);
}

.quiz__progress-fill {
  height: 100%;
  background-color: var(--accent-terminal);
  border-radius: 1px;
  width: 0%;
  transition: width var(--transition-slow);
}

.quiz__progress-label {
  font-family: var(--font-ui);
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  text-align: right;
}

.quiz__body {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: var(--space-lg);
  max-width: 480px;
  margin: 0 auto;
  width: 100%;
}

.quiz__prompt-label {
  font-family: var(--font-ui);
  font-size: 0.6rem;
  color: var(--accent-copper);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.quiz__question {
  font-family: var(--font-body);
  font-size: clamp(1rem, 4vw, 1.2rem);
  font-weight: 500;
  line-height: 1.55;
  color: var(--text-primary);
  margin-bottom: var(--space-xl);
  flex-shrink: 0;
}

.quiz__options {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  flex: 1;
}

/* Individual answer option card */
.option-btn {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  width: 100%;
  min-height: var(--touch-target);
  padding: var(--space-md);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.5;
  text-align: left;
  transition: background-color var(--transition-fast),
              border-color var(--transition-fast),
              color var(--transition-fast),
              transform var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
  cursor: pointer;
}

.option-btn:hover,
.option-btn:focus-visible {
  background-color: var(--bg-tertiary);
  border-color: var(--accent-terminal);
  color: var(--text-primary);
  outline: none;
}

.option-btn:active {
  transform: scale(0.99);
  background-color: var(--bg-tertiary);
}

.option-btn.selected {
  background-color: var(--bg-tertiary);
  border-color: var(--accent-terminal-lt);
  color: var(--text-primary);
}

.option-btn.disabled {
  pointer-events: none;
  opacity: 0.5;
}

.option-label {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent-terminal);
  letter-spacing: 0.05em;
  flex-shrink: 0;
  padding-top: 2px;
  min-width: 20px;
}

/* ── 8. RESULT SCREEN ────────────────────────────────────────────────── */
#screen-result {
  flex-direction: column;
  /* No top padding — hero image bleeds to the top edge */
}

.result__container {
  display: flex;
  flex-direction: column;
  max-width: 480px;
  margin: 0 auto;
  width: 100%;
}

/* ── Hero image — first thing seen on result, ~50vh tall ── */
.result__hero-wrap {
  width: 100%;
  height: 50vh;
  overflow: hidden;
  background-color: var(--bg-tertiary);
  flex-shrink: 0;
  /* Extend to full screen width, break out of container max-width */
  max-width: 100vw;
  margin-left: calc(-1 * ((100vw - 100%) / 2));
  margin-right: calc(-1 * ((100vw - 100%) / 2));
}

.result__hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
  filter: saturate(0.75) contrast(1.1);
}

/* Placeholder when image is absent */
.result__image-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  min-height: 200px;
  font-family: var(--font-ui);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  text-align: center;
  padding: var(--space-lg);
}

/* The capturable card — sits below the hero image */
.result__card {
  background-color: var(--bg-card);
  border-left: 1px solid var(--border-accent);
  border-right: 1px solid var(--border-accent);
  border-bottom: 1px solid var(--border-accent);
  border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-lg);
}

.result__card-header {
  padding: var(--space-lg) var(--space-lg) var(--space-md);
  border-bottom: 1px solid var(--border-color);
}

.result__card-label {
  font-family: var(--font-ui);
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.result__archetype-name {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 12vw, 4rem);
  line-height: 1;
  color: var(--text-primary);
  letter-spacing: 0.03em;
}

.result__card-analysis {
  padding: var(--space-lg);
}

.result__analysis {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--text-secondary);
}

.result__card-footer {
  padding: var(--space-sm) var(--space-lg);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
}

.result__watermark {
  font-family: var(--font-ui);
  font-size: 0.55rem;
  color: var(--text-dim);
  letter-spacing: 0.12em;
}

.result__controls {
  padding: 0 var(--space-lg) var(--space-xl);
}

/* ── 9. TRANSITIONS (screen enter/exit) ──────────────────────────────── */
.screen--entering {
  animation: fadeIn var(--transition-slow) ease forwards;
}

.screen--exiting {
  animation: fadeOut var(--transition-base) ease forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeOut {
  from { opacity: 1; }
  to   { opacity: 0; }
}

/* ── 10. UTILITY ─────────────────────────────────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ── 11. RESPONSIVE — TABLET AND ABOVE ───────────────────────────────── */
@media (min-width: 640px) {
  .landing__container,
  .quiz__header,
  .quiz__body,
  .result__container {
    max-width: 560px;
  }

  .quiz__question {
    font-size: 1.15rem;
  }

  .result__archetype-name {
    font-size: 3.5rem;
  }

  /* Cap hero height on larger phones/tablets */
  .result__hero-wrap {
    height: 55vh;
  }
}

@media (min-width: 1024px) {
  .landing__container,
  .quiz__header,
  .quiz__body,
  .result__container {
    max-width: 640px;
  }

  /* Cap hero so it doesn't dominate desktop */
  .result__hero-wrap {
    height: 60vh;
    max-height: 520px;
  }
}

/* ── 12. REDUCED MOTION ──────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .landing__cursor {
    animation: none;
    opacity: 1;
  }
}