/* =========================================================
   SlothTask — style.css
   Design System: Warm off-white + earthy sage green palette
   ========================================================= */

/* ─── Google Font Import ──────────────────────────────── */
/* (Loaded via HTML <link> for performance) */

/* ─── Design Tokens ───────────────────────────────────── */
:root {
  /* Colors */
  --clr-bg:           #f7f4ef;
  --clr-surface:      #ffffff;
  --clr-surface-alt:  #f0ede6;
  --clr-border:       #e2ddd4;

  --clr-primary:      #4a7c59;   /* sage green */
  --clr-primary-dark: #375c42;
  --clr-primary-light:#6da17e;
  --clr-primary-pale: #eaf3ec;

  --clr-accent:       #c8864b;   /* warm amber */
  --clr-accent-pale:  #fdf3e7;

  --clr-text:         #2c2c2a;
  --clr-text-muted:   #6b6660;
  --clr-text-subtle:  #9a958f;

  --clr-error:        #c0392b;
  --clr-error-pale:   #fdf0ef;

  --clr-status:       #2d6a9f;
  --clr-status-pale:  #edf4fc;

  /* Category Colors */
  --clr-start:        #2e7d52;   /* Start Here — deep green */
  --clr-start-pale:   #e8f5ee;
  --clr-next:         #1a6596;   /* Next Steps — calm blue */
  --clr-next-pale:    #e8f2fb;
  --clr-quick:        #b5640e;   /* Quick Wins — warm amber */
  --clr-quick-pale:   #fef4e6;
  --clr-later:        #7a6f6a;   /* Do Later — neutral */
  --clr-later-pale:   #f5f2ef;

  /* Typography */
  --font-display:  'Outfit', system-ui, sans-serif;
  --font-body:     'Inter', system-ui, sans-serif;

  /* Spacing */
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Radius */
  --radius-sm:  0.5rem;
  --radius-md:  1rem;
  --radius-lg:  1.5rem;
  --radius-xl:  2rem;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:  0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg:  0 8px 24px rgba(0,0,0,0.10), 0 4px 8px rgba(0,0,0,0.04);
  --shadow-focus: 0 0 0 3px rgba(74, 124, 89, 0.25);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-mid:  250ms ease;
  --transition-slow: 400ms ease;

  /* Layout */
  --max-width: 760px;
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(74,124,89,0.07) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 100%, rgba(200,134,75,0.05) 0%, transparent 60%);
}

/* ─── Utility ─────────────────────────────────────────── */
.hidden {
  display: none !important;
}

/* ─── Header ──────────────────────────────────────────── */
.site-header {
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: var(--space-md) var(--space-lg);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.logo-group {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo-icon {
  font-size: 2rem;
  line-height: 1;
  animation: slowSway 4s ease-in-out infinite;
}

@keyframes slowSway {
  0%, 100% { transform: rotate(-4deg); }
  50%       { transform: rotate(4deg); }
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--clr-primary-dark);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.logo-tagline {
  font-size: 0.72rem;
  color: var(--clr-text-muted);
  font-weight: 400;
  letter-spacing: 0.01em;
}

.header-badge {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--clr-primary);
  background: var(--clr-primary-pale);
  border: 1px solid rgba(74,124,89,0.2);
  padding: var(--space-xs) var(--space-sm);
  border-radius: 2rem;
  white-space: nowrap;
}

/* ─── Main Content ────────────────────────────────────── */
.main-content {
  flex: 1;
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg) var(--space-3xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

/* ─── Hero ────────────────────────────────────────────── */
.hero {
  text-align: center;
  padding: var(--space-xl) 0 var(--space-lg);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--clr-text);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: var(--space-md);
}

.hero-title em {
  color: var(--clr-primary);
  font-style: normal;
}

.hero-description {
  font-size: 1.05rem;
  color: var(--clr-text-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ─── Cards ───────────────────────────────────────────── */
.card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition-mid);
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: var(--space-lg);
  letter-spacing: -0.02em;
}

/* ─── Input Card ──────────────────────────────────────── */
.input-card {
  position: relative;
}

.textarea-wrapper {
  position: relative;
  margin-bottom: var(--space-lg);
}

.task-textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.975rem;
  line-height: 1.65;
  color: var(--clr-text);
  background: var(--clr-surface-alt);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  resize: vertical;
  min-height: 140px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  outline: none;
}

.task-textarea::placeholder {
  color: var(--clr-text-subtle);
  font-style: italic;
}

.task-textarea:focus {
  border-color: var(--clr-primary-light);
  box-shadow: var(--shadow-focus);
  background: var(--clr-surface);
}

.task-textarea:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.char-counter {
  position: absolute;
  bottom: 0.6rem;
  right: var(--space-md);
  font-size: 0.72rem;
  color: var(--clr-text-subtle);
  pointer-events: none;
  font-variant-numeric: tabular-nums;
}

.char-counter.near-limit {
  color: var(--clr-accent);
}

/* ─── Buttons ─────────────────────────────────────────── */
.input-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  border-radius: var(--radius-md);
  padding: 0.75rem var(--space-xl);
  cursor: pointer;
  transition:
    background var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    opacity var(--transition-fast);
  outline: none;
  letter-spacing: 0.01em;
}

.btn:focus-visible {
  box-shadow: var(--shadow-focus);
}

.btn-primary {
  background: var(--clr-primary);
  color: white;
  box-shadow: 0 4px 14px rgba(74,124,89,0.35);
}

.btn-primary:hover:not(:disabled) {
  background: var(--clr-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(74,124,89,0.45);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(74,124,89,0.3);
}

.btn-primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background: var(--clr-surface-alt);
  color: var(--clr-text-muted);
  border: 1.5px solid var(--clr-border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--clr-border);
  color: var(--clr-text);
  transform: translateY(-1px);
}

.btn-secondary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-sm {
  font-size: 0.85rem;
  padding: 0.5rem var(--space-lg);
}

.btn-icon {
  font-size: 1.1em;
}

/* ─── Validation Message ──────────────────────────────── */
.validation-msg {
  margin-top: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--clr-error-pale);
  border: 1px solid rgba(192,57,43,0.2);
  border-radius: var(--radius-sm);
  color: var(--clr-error);
  font-size: 0.875rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  animation: slideDown 200ms ease;
}

.validation-msg::before {
  content: '⚠️';
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── Status / Loading Card ───────────────────────────── */
.status-card {
  background: var(--clr-status-pale);
  border-color: rgba(45,106,159,0.15);
  animation: fadeIn var(--transition-mid);
}

.status-inner {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

/* Spinner */
.spinner {
  position: relative;
  width: 56px;
  height: 56px;
  flex-shrink: 0;
}

.spinner-ring {
  position: absolute;
  inset: 0;
  border: 3px solid rgba(45,106,159,0.15);
  border-top-color: var(--clr-status);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.sloth-spinner {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  animation: pulse 2s ease-in-out infinite;
}

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

@keyframes pulse {
  0%, 100% { opacity: 0.7; transform: scale(0.95); }
  50%       { opacity: 1;   transform: scale(1.05); }
}

.status-text-group {
  flex: 1;
}

.status-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--clr-status);
  margin-bottom: 0.2rem;
}

.status-detail {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
}

/* Progress Bar */
.progress-wrap {
  margin-top: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.progress-bar-track {
  flex: 1;
  height: 8px;
  background: rgba(45,106,159,0.1);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--clr-primary-light), var(--clr-status));
  border-radius: 4px;
  width: 0%;
  transition: width 300ms ease;
}

.progress-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-status);
  min-width: 2.5rem;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* ─── Error Card ──────────────────────────────────────── */
.error-card {
  background: var(--clr-error-pale);
  border-color: rgba(192,57,43,0.15);
  animation: fadeIn var(--transition-mid);
}

.error-inner {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.error-icon {
  font-size: 2rem;
  line-height: 1;
}

.error-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--clr-error);
  margin-bottom: 0.2rem;
}

.error-detail {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  line-height: 1.5;
}

/* ─── Results Section ─────────────────────────────────── */
.results-section {
  animation: fadeInUp 400ms ease;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

.results-heading {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--clr-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.results-heading-icon {
  animation: slowSway 4s ease-in-out infinite;
}

.results-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

/* Category result cards */
.result-card {
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  border: 1.5px solid transparent;
  box-shadow: var(--shadow-sm);
  animation: fadeInUp 350ms ease both;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.result-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.result-card:nth-child(1) { animation-delay: 0ms; }
.result-card:nth-child(2) { animation-delay: 60ms; }
.result-card:nth-child(3) { animation-delay: 120ms; }
.result-card:nth-child(4) { animation-delay: 180ms; }

/* Category: Start Here */
.result-card--start {
  background: var(--clr-start-pale);
  border-color: rgba(46,125,82,0.25);
}
.result-card--start .result-card-label {
  color: var(--clr-start);
  background: rgba(46,125,82,0.1);
}

/* Category: Next Steps */
.result-card--next {
  background: var(--clr-next-pale);
  border-color: rgba(26,101,150,0.2);
}
.result-card--next .result-card-label {
  color: var(--clr-next);
  background: rgba(26,101,150,0.1);
}

/* Category: Quick Wins */
.result-card--quick {
  background: var(--clr-quick-pale);
  border-color: rgba(181,100,14,0.2);
}
.result-card--quick .result-card-label {
  color: var(--clr-quick);
  background: rgba(181,100,14,0.1);
}

/* Category: Do Later */
.result-card--later {
  background: var(--clr-later-pale);
  border-color: rgba(122,111,106,0.15);
}
.result-card--later .result-card-label {
  color: var(--clr-later);
  background: rgba(122,111,106,0.1);
}

.result-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.result-card-icon {
  font-size: 1.3rem;
  line-height: 1;
  flex-shrink: 0;
}

.result-card-label {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.6rem;
  border-radius: 2rem;
}

.result-card-tasks {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.result-task-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--clr-text);
}

.result-task-item::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
  margin-top: 0.5rem;
  opacity: 0.5;
}

.result-task-text {
  flex: 1;
}

/* Tip / note under a task */
.result-task-tip {
  display: block;
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  margin-top: 0.15rem;
}

/* Results footer note */
.results-note {
  margin-top: var(--space-lg);
  font-size: 0.8rem;
  color: var(--clr-text-subtle);
  text-align: center;
  padding: var(--space-sm);
}

/* ─── Footer ──────────────────────────────────────────── */
.site-footer {
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  padding: var(--space-xl) var(--space-lg);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-text {
  font-size: 0.8rem;
  color: var(--clr-text-subtle);
  text-align: center;
  line-height: 1.6;
}

.footer-text strong {
  color: var(--clr-text-muted);
}

/* ─── Responsive ──────────────────────────────────────── */
@media (max-width: 600px) {
  :root {
    --space-xl: 1.5rem;
    --space-2xl: 2rem;
    --space-3xl: 2.5rem;
  }

  .header-inner {
    flex-wrap: wrap;
    gap: var(--space-sm);
  }

  .header-badge {
    font-size: 0.68rem;
  }

  .main-content {
    padding: var(--space-lg) var(--space-md) var(--space-2xl);
    gap: var(--space-lg);
  }

  .hero {
    padding: var(--space-lg) 0 var(--space-sm);
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .hero-description {
    font-size: 0.95rem;
  }

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

  .input-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .results-grid {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 640px) {
  .results-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .result-card--start {
    grid-column: 1 / -1;
  }
}

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

/* High contrast focus outlines */
:focus-visible {
  outline: 2px solid var(--clr-primary);
  outline-offset: 2px;
}