/**
 * PeopleSafe SDLC Journal - Circle 6 Systems Branded Styles
 * Mobile-first responsive design with WCAG AA accessibility.
 */

/* --- CSS Variables --- */
:root {
  --navy: #0a192f;
  --navy-light: #112240;
  --navy-lighter: #1d3461;
  --slate: #8892b0;
  --slate-light: #a8b2d1;
  --lightest: #ccd6f6;
  --white: #e6f1ff;
  --accent: #64ffda;
  --accent-dim: #64ffda33;

  /* SDLC Category Colors */
  --success-color: #64ffda;
  --success-bg: #64ffda15;
  --delight-color: #ffd764;
  --delight-bg: #ffd76415;
  --learning-color: #64b5ff;
  --learning-bg: #64b5ff15;
  --compliment-color: #ff64b5;
  --compliment-bg: #ff64b515;

  /* Layout */
  --max-width: 900px;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --transition: 0.2s ease;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background-color: var(--navy);
  color: var(--slate-light);
  line-height: 1.6;
  min-height: 100vh;
  padding-bottom: 80px;
}

[x-cloak] {
  display: none !important;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: Georgia, 'Times New Roman', serif;
  color: var(--lightest);
  line-height: 1.3;
}

h1 { font-size: 1.75rem; margin-bottom: 0.5rem; }
h2 { font-size: 1.4rem; margin-bottom: 0.5rem; }
h3 { font-size: 1.15rem; margin-bottom: 0.4rem; }
h4 { font-size: 1rem; }

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

a:hover {
  opacity: 0.8;
}

/* --- Layout --- */
.app-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem;
}

.header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--navy-lighter);
  margin-bottom: 1.5rem;
}

.header-logo {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

.header-title {
  font-size: 1.2rem;
  color: var(--lightest);
  font-family: Georgia, serif;
}

.header-subtitle {
  font-size: 0.75rem;
  color: var(--slate);
  display: block;
}

/* --- Navigation --- */
.nav-bar {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.nav-btn {
  background: transparent;
  border: 1px solid var(--navy-lighter);
  color: var(--slate-light);
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.85rem;
  transition: all var(--transition);
}

.nav-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.nav-btn.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

/* Bottom nav for mobile */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--navy-light);
  border-top: 1px solid var(--navy-lighter);
  padding: 0.5rem;
  z-index: 100;
  justify-content: space-around;
}

@media (max-width: 640px) {
  .bottom-nav {
    display: flex;
  }
  .nav-bar {
    display: none;
  }
  body {
    padding-bottom: 70px;
  }
}

.bottom-nav-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  background: none;
  border: none;
  color: var(--slate);
  font-size: 0.65rem;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius);
  transition: color var(--transition);
}

.bottom-nav-btn:hover,
.bottom-nav-btn.active {
  color: var(--accent);
}

.bottom-nav-btn .icon {
  font-size: 1.2rem;
}

/* --- Cards --- */
.card {
  background: var(--navy-light);
  border: 1px solid var(--navy-lighter);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
}

.card-centered {
  max-width: 440px;
  margin: 3rem auto;
  text-align: center;
}

/* --- Forms --- */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  color: var(--slate-light);
  margin-bottom: 0.35rem;
  font-weight: 500;
}

.form-input {
  width: 100%;
  background: var(--navy);
  border: 1px solid var(--navy-lighter);
  color: var(--lightest);
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-dim);
}

.form-input::placeholder {
  color: var(--slate);
}

textarea.form-input {
  resize: vertical;
  min-height: 80px;
}

/* --- SDLC Category Textareas --- */
.sdlc-field {
  border-left: 3px solid transparent;
  padding-left: 0.75rem;
  margin-bottom: 1.25rem;
}

.sdlc-field.success { border-left-color: var(--success-color); }
.sdlc-field.delight { border-left-color: var(--delight-color); }
.sdlc-field.learning { border-left-color: var(--learning-color); }
.sdlc-field.compliment { border-left-color: var(--compliment-color); }

.sdlc-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
  font-weight: 500;
  font-size: 0.9rem;
}

.sdlc-label.success { color: var(--success-color); }
.sdlc-label.delight { color: var(--delight-color); }
.sdlc-label.learning { color: var(--learning-color); }
.sdlc-label.compliment { color: var(--compliment-color); }

.sdlc-icon {
  font-size: 1rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: var(--navy);
  font-weight: 600;
}

.btn-primary:hover:not(:disabled) {
  background: #8affea;
}

.btn-secondary {
  background: transparent;
  border-color: var(--slate);
  color: var(--slate-light);
}

.btn-secondary:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-danger {
  background: transparent;
  border-color: #ff6464;
  color: #ff6464;
}

.btn-danger:hover:not(:disabled) {
  background: #ff646420;
}

.btn-small {
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
}

.btn-block {
  width: 100%;
}

.btn-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* --- Messages --- */
.message {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-size: 0.85rem;
}

.message-error {
  background: #ff646420;
  border: 1px solid #ff6464;
  color: #ff9999;
}

.message-success {
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  color: var(--accent);
}

/* --- Entry Cards (Browse) --- */
.entry-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.entry-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  background: var(--navy);
  border: 1px solid var(--navy-lighter);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color var(--transition);
}

.entry-item:hover {
  border-color: var(--accent);
}

.entry-date {
  font-weight: 500;
  color: var(--lightest);
  font-size: 0.9rem;
}

.entry-preview {
  font-size: 0.8rem;
  color: var(--slate);
  margin-top: 0.2rem;
}

.entry-arrow {
  color: var(--slate);
  font-size: 1.2rem;
}

.month-group {
  margin-bottom: 1.5rem;
}

.month-label {
  font-size: 0.8rem;
  color: var(--slate);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--navy-lighter);
}

/* --- Rollup View --- */
.tab-bar {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--navy-lighter);
  padding-bottom: 0.5rem;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--slate);
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  font-size: 0.85rem;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
}

.tab-btn:hover {
  color: var(--lightest);
}

.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.period-selector {
  margin-bottom: 1rem;
}

.period-select {
  background: var(--navy);
  border: 1px solid var(--navy-lighter);
  color: var(--lightest);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  width: 100%;
  max-width: 300px;
}

.period-select:focus {
  outline: none;
  border-color: var(--accent);
}

.rollup-section {
  margin-bottom: 1.5rem;
}

.rollup-category {
  margin-bottom: 1.25rem;
}

.rollup-category-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--navy-lighter);
}

.rollup-entry-item {
  padding: 0.4rem 0;
  font-size: 0.85rem;
  display: flex;
  gap: 0.5rem;
}

.rollup-entry-date {
  color: var(--slate);
  white-space: nowrap;
  font-size: 0.75rem;
  min-width: 70px;
}

.rollup-entry-text {
  color: var(--slate-light);
}

.reflection-section {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--navy-lighter);
}

.sub-reflection {
  background: var(--navy);
  border-left: 2px solid var(--accent);
  padding: 0.75rem 1rem;
  margin-bottom: 0.5rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.85rem;
}

.sub-reflection-label {
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

/* --- Entry Detail --- */
.entry-detail {
  margin-top: 1rem;
}

.entry-detail-category {
  margin-bottom: 1rem;
  padding: 0.75rem;
  border-radius: var(--radius);
}

.entry-detail-category.success { background: var(--success-bg); border-left: 3px solid var(--success-color); }
.entry-detail-category.delight { background: var(--delight-bg); border-left: 3px solid var(--delight-color); }
.entry-detail-category.learning { background: var(--learning-bg); border-left: 3px solid var(--learning-color); }
.entry-detail-category.compliment { background: var(--compliment-bg); border-left: 3px solid var(--compliment-color); }

.entry-detail-label {
  font-weight: 500;
  font-size: 0.8rem;
  margin-bottom: 0.25rem;
}

.entry-detail-category.success .entry-detail-label { color: var(--success-color); }
.entry-detail-category.delight .entry-detail-label { color: var(--delight-color); }
.entry-detail-category.learning .entry-detail-label { color: var(--learning-color); }
.entry-detail-category.compliment .entry-detail-label { color: var(--compliment-color); }

.entry-detail-text {
  font-size: 0.9rem;
  color: var(--lightest);
  white-space: pre-wrap;
}

/* --- Settings --- */
.settings-section {
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--navy-lighter);
}

.settings-section:last-child {
  border-bottom: none;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  padding: 0.35rem 0;
  font-size: 0.85rem;
}

.stat-label {
  color: var(--slate);
}

.stat-value {
  color: var(--lightest);
  font-weight: 500;
}

/* --- About View --- */
.about-content {
  line-height: 1.8;
}

.about-content h3 {
  margin-top: 1.5rem;
  color: var(--accent);
}

.about-content p {
  margin-bottom: 1rem;
  color: var(--slate-light);
}

.about-content ul {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.about-content li {
  margin-bottom: 0.35rem;
}

/* --- Search --- */
.search-bar {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.search-bar .form-input {
  flex: 1;
}

/* --- Trust Footer --- */
.trust-footer {
  text-align: center;
  padding: 2rem 1rem;
  margin-top: 3rem;
  border-top: 1px solid var(--navy-lighter);
  color: var(--slate);
  font-size: 0.75rem;
}

.trust-footer .privacy-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--accent-dim);
  color: var(--accent);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.trust-footer p {
  max-width: 500px;
  margin: 0.5rem auto;
}

/* --- Loading / Spinner --- */
.loading-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 50vh;
  gap: 1rem;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--navy-lighter);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* --- Empty State --- */
.empty-state {
  text-align: center;
  padding: 2rem;
  color: var(--slate);
}

.empty-state-icon {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  opacity: 0.5;
}

/* --- Passphrase Strength Hint --- */
.passphrase-hint {
  font-size: 0.75rem;
  color: var(--slate);
  margin-top: 0.25rem;
}

/* --- Responsive --- */
@media (min-width: 640px) {
  .app-container {
    padding: 1.5rem;
  }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }
}

@media (min-width: 968px) {
  .app-container {
    padding: 2rem;
  }
}

/* --- Focus & Accessibility --- */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

button:focus:not(:focus-visible) {
  outline: none;
}

/* Screen reader only */
.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;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* --- Print --- */
@media print {
  body {
    background: white;
    color: #333;
    padding: 0;
  }

  .nav-bar, .bottom-nav, .btn, .search-bar, .trust-footer {
    display: none !important;
  }

  .card {
    background: white;
    border: 1px solid #ddd;
    box-shadow: none;
    break-inside: avoid;
  }

  .entry-detail-category {
    border-left-width: 4px;
    background: #f8f8f8;
  }

  .entry-detail-text, .rollup-entry-text {
    color: #333;
  }

  h1, h2, h3, h4 {
    color: #111;
  }
}