/* ============================================================
   30-Day Self-Discovery Challenge — Design System
   Color palette: deep navy + warm amber + soft cream
   ============================================================ */

/* ── CSS Custom Properties ──────────────────────────────────── */
:root {
  --color-bg:          #0f0f1a;
  --color-bg-card:     #1a1a2e;
  --color-bg-elevated: #22223b;
  --color-bg-input:    #16213e;
  --color-border:      rgba(255,255,255,0.08);
  --color-border-focus:rgba(212,175,55,0.6);

  --color-primary:     #d4af37;
  --color-primary-dim: rgba(212,175,55,0.15);
  --color-primary-glow:rgba(212,175,55,0.3);
  --color-accent:      #c9956e;
  --color-accent-dim:  rgba(201,149,110,0.15);

  --color-text:        #f0ede6;
  --color-text-muted:  #9a9bb0;
  --color-text-faint:  #5a5b70;

  --color-success:     #4ade80;
  --color-warning:     #fbbf24;
  --color-error:       #f87171;
  --color-info:        #60a5fa;

  --color-clarity:     #7c3aed;
  --color-commitment:  #d4af37;
  --color-consistency: #10b981;

  --font-sans:    'Inter', system-ui, sans-serif;
  --font-serif:   'Playfair Display', Georgia, serif;

  --radius-sm:    6px;
  --radius-md:    12px;
  --radius-lg:    20px;
  --radius-xl:    28px;
  --radius-full:  9999px;

  --shadow-sm:    0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:    0 4px 20px rgba(0,0,0,0.5);
  --shadow-lg:    0 12px 40px rgba(0,0,0,0.6);
  --shadow-glow:  0 0 30px rgba(212,175,55,0.15);

  --transition:   0.2s ease;
  --transition-slow: 0.4s ease;
  --safe-top:     env(safe-area-inset-top, 0px);
  --safe-bottom:  env(safe-area-inset-bottom, 0px);
}

/* ── Reset & Base ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  min-height: 100%;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Typography ─────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  line-height: 1.25;
  color: var(--color-text);
  font-weight: 700;
}

h1 { font-size: clamp(1.8rem, 5vw, 2.8rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.1rem; font-family: var(--font-sans); font-weight: 600; }

p { color: var(--color-text-muted); line-height: 1.75; }

a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent); }

/* ── App Shell ──────────────────────────────────────────────── */
#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.page { display: none; min-height: 100vh; flex-direction: column; }
.page.active { display: flex; }

/* ── Navigation ─────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  padding-top: var(--safe-top);
  background: rgba(15,15,26,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1rem;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-text);
  font-weight: 700;
  white-space: nowrap;
}

.nav-brand-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 8px var(--color-primary);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  background: none;
  font-family: var(--font-sans);
  white-space: nowrap;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-text);
  background: rgba(255,255,255,0.06);
}

.nav-link.active { color: var(--color-primary); }

/* ── Bottom Tab Bar (mobile) ────────────────────────────────── */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding-bottom: var(--safe-bottom);
  background: rgba(26,26,46,0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--color-border);
}

.bottom-nav-inner {
  display: flex;
  align-items: stretch;
}

.bottom-nav-link {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 0.7rem 0.5rem;
  color: var(--color-text-faint);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  background: none;
  font-family: var(--font-sans);
}

.bottom-nav-link i {
  font-size: 1.2rem;
  line-height: 1;
}

.bottom-nav-link.active {
  color: var(--color-primary);
}

.bottom-nav-link.active i {
  filter: drop-shadow(0 0 6px var(--color-primary-glow));
}

/* ── Main Content Area ──────────────────────────────────────── */
.main-content {
  flex: 1;
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.main-content.padded-bottom {
  padding-bottom: calc(5rem + var(--safe-bottom));
}

/* ── Cards ──────────────────────────────────────────────────── */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: all var(--transition);
}

.card:hover { border-color: rgba(255,255,255,0.12); }
.card.elevated { background: var(--color-bg-elevated); }

.card-hero {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.card-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top right, rgba(212,175,55,0.08) 0%, transparent 60%);
  pointer-events: none;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
  text-align: center;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }

.btn-primary {
  background: var(--color-primary);
  color: #0f0f1a;
}
.btn-primary:hover:not(:disabled) {
  background: #e6c547;
  box-shadow: 0 4px 20px var(--color-primary-glow);
}

.btn-secondary {
  background: rgba(255,255,255,0.06);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover:not(:disabled) {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.15);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
}
.btn-ghost:hover:not(:disabled) { color: var(--color-text); background: rgba(255,255,255,0.05); }

.btn-danger {
  background: rgba(248,113,113,0.12);
  color: var(--color-error);
  border: 1px solid rgba(248,113,113,0.25);
}
.btn-danger:hover:not(:disabled) { background: rgba(248,113,113,0.2); }

.btn-lg { padding: 1rem 2rem; font-size: 1rem; border-radius: var(--radius-lg); }
.btn-sm { padding: 0.5rem 1rem; font-size: 0.8rem; }
.btn-block { width: 100%; }
.btn-icon { padding: 0.6rem; border-radius: var(--radius-md); }

/* ── Form Elements ──────────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.form-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  background: var(--color-bg-input);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: all var(--transition);
  outline: none;
  -webkit-appearance: none;
}

.form-input, .form-select { padding: 0.75rem 1rem; }
.form-textarea {
  padding: 1rem;
  resize: vertical;
  min-height: 120px;
  line-height: 1.7;
}

.form-input::placeholder, .form-textarea::placeholder {
  color: var(--color-text-faint);
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--color-border-focus);
  background: rgba(22,33,62,0.9);
  box-shadow: 0 0 0 3px var(--color-primary-dim);
}

.form-error {
  font-size: 0.8rem;
  color: var(--color-error);
  display: none;
}
.form-error.visible { display: block; }

.form-hint {
  font-size: 0.78rem;
  color: var(--color-text-faint);
}

/* ── Reflection Textarea (large, focused) ───────────────────── */
.reflection-textarea {
  min-height: 260px;
  font-size: 1.05rem;
  line-height: 1.8;
  background: rgba(15,15,26,0.6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  color: var(--color-text);
  transition: all var(--transition);
  resize: none;
  font-family: var(--font-sans);
  width: 100%;
  outline: none;
}

.reflection-textarea:focus {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px var(--color-primary-dim), var(--shadow-glow);
}

.word-count {
  font-size: 0.78rem;
  color: var(--color-text-faint);
  text-align: right;
  margin-top: 0.4rem;
  transition: color var(--transition);
}
.word-count.good { color: var(--color-success); }

/* ── Score/Rating Stars ─────────────────────────────────────── */
.rating-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.rating-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1.5px solid var(--color-border);
  background: var(--color-bg-elevated);
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
}

.rating-btn:hover, .rating-btn.selected {
  border-color: var(--color-primary);
  background: var(--color-primary-dim);
  color: var(--color-primary);
  transform: scale(1.1);
}

/* ── Progress Indicators ────────────────────────────────────── */
.progress-ring-wrap {
  position: relative;
  width: 120px;
  height: 120px;
  flex-shrink: 0;
}

.progress-ring-text {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.progress-ring-pct {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-serif);
  color: var(--color-primary);
  line-height: 1;
}

.progress-ring-label {
  font-size: 0.65rem;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 2px;
}

.progress-bar-track {
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: width 0.8s cubic-bezier(0.4,0,0.2,1);
}

/* ── Phase Badge ─────────────────────────────────────────────── */
.phase-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.phase-clarity {
  background: rgba(124,58,237,0.15);
  color: #a78bfa;
  border: 1px solid rgba(124,58,237,0.3);
}
.phase-commitment {
  background: var(--color-primary-dim);
  color: var(--color-primary);
  border: 1px solid rgba(212,175,55,0.3);
}
.phase-consistency {
  background: rgba(16,185,129,0.12);
  color: #34d399;
  border: 1px solid rgba(16,185,129,0.25);
}

/* ── Checkpoint Badge ───────────────────────────────────────── */
.checkpoint-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.7rem;
  background: linear-gradient(135deg, rgba(212,175,55,0.2), rgba(201,149,110,0.15));
  border: 1px solid rgba(212,175,55,0.4);
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

/* ── Day Grid ───────────────────────────────────────────────── */
.day-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(52px, 1fr));
  gap: 0.5rem;
}

.day-dot {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border);
  background: var(--color-bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-faint);
  cursor: default;
  transition: all var(--transition);
  position: relative;
}

.day-dot.completed {
  background: var(--color-primary-dim);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.day-dot.current {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #0f0f1a;
  box-shadow: 0 0 16px var(--color-primary-glow);
  cursor: pointer;
  animation: pulseDot 2s ease-in-out infinite;
}

.day-dot.checkpoint::after {
  content: '★';
  position: absolute;
  top: -6px;
  right: -4px;
  font-size: 0.55rem;
  color: var(--color-primary);
}

@keyframes pulseDot {
  0%, 100% { box-shadow: 0 0 12px var(--color-primary-glow); }
  50% { box-shadow: 0 0 24px rgba(212,175,55,0.5); }
}

/* ── Streak Display ─────────────────────────────────────────── */
.streak-display {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.streak-flame {
  font-size: 1.4rem;
  animation: flicker 1.5s ease-in-out infinite;
}

@keyframes flicker {
  0%, 100% { transform: scale(1) rotate(-3deg); }
  50% { transform: scale(1.1) rotate(3deg); }
}

.streak-count {
  font-size: 1.8rem;
  font-weight: 700;
  font-family: var(--font-serif);
  color: var(--color-primary);
  line-height: 1;
}

.streak-label {
  font-size: 0.75rem;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── Quote Block ─────────────────────────────────────────────── */
.quote-block {
  padding: 1.25rem 1.5rem;
  border-left: 3px solid var(--color-primary);
  background: var(--color-primary-dim);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.quote-text {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--color-text);
  line-height: 1.7;
}

.quote-author {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
  font-weight: 500;
}

/* ── Auth Page ───────────────────────────────────────────────── */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  background: var(--color-bg);
  position: relative;
  overflow: hidden;
}

.auth-page::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 60% at 70% 20%, rgba(212,175,55,0.07) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 20% 80%, rgba(124,58,237,0.07) 0%, transparent 60%);
  pointer-events: none;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2.5rem 2rem;
  position: relative;
  z-index: 1;
}

.auth-logo {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-logo-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 0.75rem;
  font-size: 1.4rem;
  color: #0f0f1a;
  box-shadow: 0 0 30px rgba(212,175,55,0.3);
}

.auth-logo-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--color-text);
}

.auth-logo-sub {
  font-size: 0.8rem;
  color: var(--color-text-faint);
  margin-top: 0.25rem;
}

.auth-tabs {
  display: flex;
  background: rgba(255,255,255,0.04);
  border-radius: var(--radius-md);
  padding: 3px;
  margin-bottom: 1.75rem;
  gap: 3px;
}

.auth-tab {
  flex: 1;
  padding: 0.55rem;
  border-radius: calc(var(--radius-md) - 2px);
  text-align: center;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  color: var(--color-text-muted);
  border: none;
  background: none;
  font-family: var(--font-sans);
}

.auth-tab.active {
  background: var(--color-bg-elevated);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
}

/* ── Divider ─────────────────────────────────────────────────── */
.divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 1.5rem 0;
  color: var(--color-text-faint);
  font-size: 0.8rem;
}
.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

/* ── Toast Notifications ─────────────────────────────────────── */
#toast-container {
  position: fixed;
  top: calc(1rem + var(--safe-top));
  right: 1rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  pointer-events: all;
  animation: toastIn 0.3s cubic-bezier(0.34,1.56,0.64,1);
  max-width: 340px;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.toast.success { background: rgba(74,222,128,0.15); border: 1px solid rgba(74,222,128,0.3); color: var(--color-success); }
.toast.error   { background: rgba(248,113,113,0.15); border: 1px solid rgba(248,113,113,0.3); color: var(--color-error); }
.toast.info    { background: rgba(96,165,250,0.15);  border: 1px solid rgba(96,165,250,0.3);  color: var(--color-info); }
.toast.warning { background: rgba(251,191,36,0.15);  border: 1px solid rgba(251,191,36,0.3);  color: var(--color-warning); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(20px) scale(0.95); }
  to   { opacity: 1; transform: translateX(0) scale(1); }
}

@keyframes toastOut {
  to { opacity: 0; transform: translateX(20px) scale(0.95); }
}

/* ── Loading Spinner ─────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.1);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

.loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  z-index: 9990;
}

.loading-overlay .spinner { width: 40px; height: 40px; }

/* ── Stats Row ───────────────────────────────────────────────── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.stat-box {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  text-align: center;
  transition: all var(--transition);
}

.stat-box:hover { border-color: rgba(255,255,255,0.12); }

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  font-family: var(--font-serif);
  color: var(--color-primary);
  line-height: 1;
}

.stat-label {
  font-size: 0.7rem;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 0.4rem;
}

/* ── History List ────────────────────────────────────────────── */
.history-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}

.history-item:hover {
  border-color: rgba(212,175,55,0.3);
  background: var(--color-bg-elevated);
  transform: translateX(3px);
}

.history-day-badge {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-primary-dim);
  border: 1px solid rgba(212,175,55,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-primary);
  flex-shrink: 0;
}

.history-meta {
  flex: 1;
  min-width: 0;
}

.history-theme {
  font-weight: 600;
  color: var(--color-text);
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-snippet {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.history-date {
  font-size: 0.72rem;
  color: var(--color-text-faint);
  margin-top: 0.25rem;
}

/* ── Modal ───────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 600px;
  max-height: 85vh;
  overflow-y: auto;
  padding: 2rem;
  transform: scale(0.95) translateY(10px);
  transition: transform var(--transition);
}

.modal-overlay.open .modal {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

/* ── Misc Utilities ──────────────────────────────────────────── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-muted { color: var(--color-text-muted); }
.text-faint { color: var(--color-text-faint); }
.text-primary { color: var(--color-primary); }
.text-success { color: var(--color-success); }
.text-error { color: var(--color-error); }
.text-center { text-align: center; }
.font-bold { font-weight: 700; }
.font-serif { font-family: var(--font-serif); }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.w-full { width: 100%; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.rounded-full { border-radius: 9999px; }
.opacity-50 { opacity: 0.5; }

/* ── Welcome Landing ─────────────────────────────────────────── */
.hero-section {
  padding: 4rem 0 3rem;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.85rem;
  background: var(--color-primary-dim);
  border: 1px solid rgba(212,175,55,0.25);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 6vw, 3.5rem);
  line-height: 1.15;
  color: var(--color-text);
  margin-bottom: 1rem;
}

.hero-title span {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: 2.5rem;
}

.phase-list {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.phase-pill {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
}

/* ── Auto-save indicator ──────────────────────────────────────── */
.autosave-indicator {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  color: var(--color-text-faint);
  transition: all var(--transition);
}
.autosave-indicator.saving { color: var(--color-warning); }
.autosave-indicator.saved  { color: var(--color-success); }
.autosave-indicator i { font-size: 0.7rem; }

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 640px) {
  .nav-links { display: none; }
  .bottom-nav { display: block; }
  .main-content { padding: 1.25rem 1rem; }
  .auth-card { padding: 2rem 1.25rem; border-radius: var(--radius-xl); }
  .stats-row { grid-template-columns: repeat(3, 1fr); gap: 0.5rem; }
  .stat-box { padding: 0.875rem 0.5rem; }
  .stat-value { font-size: 1.5rem; }
  .card-hero { padding: 1.5rem 1.25rem; }
  .card { padding: 1.25rem; }
  .day-grid { grid-template-columns: repeat(auto-fill, minmax(44px, 1fr)); gap: 0.4rem; }
  .modal { padding: 1.5rem; }
  h1 { font-size: 1.8rem; }
  .hero-section { padding: 2rem 0; }
  .grid-2 { grid-template-columns: 1fr; }
}

/* ── Animations ──────────────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-in { animation: fadeIn 0.4s ease forwards; }

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to   { opacity: 1; transform: scale(1); }
}

.scale-in { animation: scaleIn 0.3s cubic-bezier(0.34,1.56,0.64,1) forwards; }

/* ── Scrollbar ───────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* ── Print / reduced motion ─────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}