/* =============================================================
   The Unwind — The Sleep Yogi
   Warm earth tones (terracotta, sage, sand). Cormorant Garamond
   serif at display sizes; Inter for UI chrome. App-like, calm.
   ============================================================= */

:root {
  /* Type scale (fluid) */
  --text-xs:    clamp(0.75rem, 0.7rem + 0.2vw, 0.85rem);
  --text-sm:    clamp(0.875rem, 0.83rem + 0.25vw, 1rem);
  --text-base:  clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
  --text-lg:    clamp(1.125rem, 1.05rem + 0.4vw, 1.375rem);
  --text-xl:    clamp(1.5rem, 1.3rem + 1vw, 2.25rem);
  --text-2xl:   clamp(2rem, 1.6rem + 2vw, 3.25rem);
  --text-quote: clamp(1.5rem, 1.1rem + 1.8vw, 2.5rem);

  /* Spacing — 4px system */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  --transition-interactive: 240ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Fonts */
  --font-display: 'Cormorant Garamond', 'Cormorant', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Layout widths */
  --content-narrow: 460px;
  --content-default: 560px;

  /* ===== EARTH PALETTE — DEFAULT (DARK / EVENING) ===== */
  /* Twilight clay — designed for nighttime. Warm, low-luminance, no glare. */
  --color-bg:           #211814;
  --color-bg-2:         #2a201a;
  --color-surface:      #2e2419;
  --color-surface-2:    #3a2c1f;
  --color-border:       #4a382a;
  --color-divider:      #3a2c1f;

  --color-text:         #ede1cf;       /* sand, soft */
  --color-text-muted:   #b9a78d;       /* warm taupe */
  --color-text-faint:   #80715d;

  /* Terracotta — primary warm accent */
  --color-primary:      #c97a4f;
  --color-primary-hover:#d68a60;
  --color-primary-soft: #3a261b;

  /* Sage — secondary cool accent */
  --color-sage:         #8aa089;
  --color-sage-hover:   #9bb19a;
  --color-sage-soft:    #2c352e;

  --color-sand:         #d9c8aa;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.25);
  --shadow-md: 0 8px 28px rgba(0,0,0,0.35);
  --shadow-lg: 0 24px 60px rgba(0,0,0,0.45);
}

/* Optional light mode (used if explicit toggle is added later) */
[data-theme="light"] {
  --color-bg:           #f5ede1;
  --color-bg-2:         #efe5d4;
  --color-surface:      #fbf5e9;
  --color-surface-2:    #f1e6d2;
  --color-border:       #d9c8aa;
  --color-divider:      #e3d4b8;

  --color-text:         #3b2a1d;
  --color-text-muted:   #715842;
  --color-text-faint:   #a08869;

  --color-primary:      #b35e36;
  --color-primary-hover:#9a4f2c;
  --color-primary-soft: #ecdac9;

  --color-sage:         #6f8a6f;
  --color-sage-hover:   #5e7960;
  --color-sage-soft:    #dee5d7;

  --color-sand:         #c9b58f;

  --shadow-sm: 0 1px 2px rgba(80,55,30,0.08);
  --shadow-md: 0 8px 24px rgba(80,55,30,0.10);
  --shadow-lg: 0 24px 50px rgba(80,55,30,0.14);
}

/* ============================================================= */
/* App shell                                                      */
/* ============================================================= */
html, body { height: 100%; }

body {
  /* gentle vignette to feel quieter */
  background:
    radial-gradient(ellipse at 50% 0%, var(--color-bg-2) 0%, var(--color-bg) 65%);
  font-feature-settings: "ss01", "calt", "liga";
  letter-spacing: 0.005em;
}

.app {
  min-height: 100dvh;
  display: grid;
  grid-template-columns: 1fr;
  position: relative;
}

.screen {
  display: none;
  min-height: 100dvh;
  padding: max(env(safe-area-inset-top), var(--space-8)) var(--space-6) max(env(safe-area-inset-bottom), var(--space-10));
  align-items: center;
  justify-content: center;
}
.screen.is-active { display: flex; }

.screen__inner {
  width: 100%;
  max-width: var(--content-default);
  display: grid;
  gap: var(--space-8);
  animation: fade-up 700ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

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

/* ============================================================= */
/* Brand mark                                                     */
/* ============================================================= */
.brand {
  display: flex;
  justify-content: center;
}
.brand__mark {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text-muted);
}
.brand__mark svg {
  color: var(--color-primary);
}
.brand__wordmark {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: var(--text-base);
  letter-spacing: 0.04em;
  color: var(--color-text);
}

/* ============================================================= */
/* Screen header                                                  */
/* ============================================================= */
.screen__header {
  text-align: center;
  display: grid;
  gap: var(--space-3);
}
.screen__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-xl);
  line-height: 1.2;
  color: var(--color-text);
  letter-spacing: 0.005em;
}
.screen__title-soft {
  color: var(--color-text-muted);
  font-style: italic;
  font-weight: 300;
}

/* ============================================================= */
/* Welcome screen — quote + steps                                 */
/* ============================================================= */
.welcome__quote-wrap {
  min-height: 12.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-block: var(--space-4);
}
.quote {
  text-align: center;
  max-width: 38ch;
  margin: 0 auto;
}
.quote__text {
  font-family: var(--font-display);
  font-weight: 400;
  font-style: italic;
  font-size: var(--text-quote);
  line-height: 1.25;
  color: var(--color-text);
  letter-spacing: 0.005em;
  min-height: 4.5em;
  max-width: none;
}
.quote__text::after {
  content: "▍";
  display: inline-block;
  margin-left: 0.05em;
  color: var(--color-primary);
  opacity: 0;
  transform: translateY(-0.05em);
  animation: caret-blink 1.1s steps(2) infinite;
}
.quote__text.is-done::after { animation: caret-fade 1.4s ease-out forwards; }
@keyframes caret-blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}
@keyframes caret-fade {
  to { opacity: 0; }
}
.quote__author {
  margin-top: var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  opacity: 0;
  transition: opacity 700ms ease;
}
.quote__author.is-visible { opacity: 1; }

.welcome__steps {
  display: grid;
  gap: var(--space-2);
  text-align: center;
}
.step {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 0.01em;
  max-width: none;
}

.tagline {
  text-align: center;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.32em;
  color: var(--color-text-faint);
  max-width: none;
}

/* ============================================================= */
/* Buttons                                                        */
/* ============================================================= */
.screen__actions {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
}
.screen__actions--secondary { margin-top: var(--space-4); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.95rem 2.25rem;
  min-height: 48px;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn--primary {
  background: var(--color-primary);
  color: #1c130d;
  box-shadow: 0 1px 0 rgba(255,255,255,0.08) inset, var(--shadow-sm);
}
.btn--primary:hover { background: var(--color-primary-hover); }
.btn--primary:active { transform: translateY(1px); }

.btn--ghost {
  color: var(--color-text-muted);
  border-color: var(--color-border);
  letter-spacing: 0.22em;
  font-size: var(--text-xs);
}
.btn--ghost:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

/* practice — paired action buttons */
.btn--practice {
  flex: 1 1 0;
  padding: 1.1rem 1.25rem;
  min-height: 64px;
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  letter-spacing: 0.16em;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  text-transform: uppercase;
  border-radius: var(--radius-lg);
}
.btn--practice:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-surface-2);
}
.btn--practice .btn__label { letter-spacing: inherit; }

/* ============================================================= */
/* Good thing screen                                              */
/* ============================================================= */
.good-form {
  display: grid;
  gap: var(--space-6);
}
.good-form__input {
  width: 100%;
  resize: none;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-text);
  letter-spacing: 0.005em;
  outline: none;
  transition: border-color var(--transition-interactive),
              background var(--transition-interactive);
}
.good-form__input::placeholder {
  color: var(--color-text-faint);
  font-style: italic;
}
.good-form__input:focus {
  border-color: var(--color-primary);
  background: var(--color-surface-2);
}

.hint {
  text-align: center;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
  font-style: italic;
  max-width: none;
}

/* ============================================================= */
/* Needs screen                                                   */
/* ============================================================= */
.needs__grid {
  display: grid;
  gap: var(--space-3);
}
.need-btn {
  width: 100%;
  text-align: left;
  padding: var(--space-5) var(--space-6);
  min-height: 64px;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: 0.005em;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.need-btn:hover {
  background: var(--color-surface-2);
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.need-btn:active { transform: translateY(1px); }
.need-btn--alt {
  font-style: italic;
  color: var(--color-text-muted);
  background: transparent;
  border-color: var(--color-divider);
  margin-top: var(--space-3);
  text-align: center;
}
.need-btn--alt:hover {
  color: var(--color-sage);
  border-color: var(--color-sage);
  background: transparent;
}

/* ============================================================= */
/* Practice screen                                                */
/* ============================================================= */
.practice__eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.32em;
  color: var(--color-text-faint);
  text-align: center;
  max-width: none;
}
.practice__title {
  font-size: var(--text-2xl);
  font-weight: 400;
  font-style: italic;
  color: var(--color-primary);
}
.practice__desc {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  text-align: center;
  margin: 0 auto;
  max-width: 32ch;
}
.practice__actions {
  display: flex;
  gap: var(--space-3);
  align-items: stretch;
}
.practice__footnote {
  text-align: center;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
  font-style: italic;
  max-width: none;
}

/* ============================================================= */
/* Mobile tightening                                              */
/* ============================================================= */
@media (max-width: 480px) {
  .screen { padding-inline: var(--space-5); }
  .screen__inner { gap: var(--space-6); }
  .welcome__quote-wrap { min-height: 10rem; }
  .quote__text { min-height: 4em; }
  .practice__actions { flex-direction: column; }
  .btn--practice { min-height: 56px; }
}

@media (min-width: 720px) {
  .screen__inner { gap: var(--space-10); }
}

/* Small height phones: less padding */
@media (max-height: 700px) {
  .screen { padding-block: var(--space-6); }
  .screen__inner { gap: var(--space-5); }
  .welcome__quote-wrap { min-height: 8rem; }
}