/* ============================================
   WE MUST HELP — Design System
   ============================================ */

:root {
  --bg-deep: #0f0f1a;
  --bg-surface: #1a1a2e;
  --bg-card: #232340;
  --bg-card-hover: #2a2a4a;

  --text-primary: #e8e6f0;
  --text-secondary: #9896a8;
  --text-muted: #6b6980;

  --accent-now: #ff6b6b;
  --accent-now-soft: rgba(255, 107, 107, 0.15);
  --accent-soon: #4ecdc4;
  --accent-soon-soft: rgba(78, 205, 196, 0.15);
  --accent-learn: #ffe66d;
  --accent-learn-soft: rgba(255, 230, 109, 0.15);

  --accent-primary: #7c6ff7;
  --accent-primary-soft: rgba(124, 111, 247, 0.15);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Lora', Georgia, serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

.screen {
  display: none;
  min-height: 100vh;
}

.screen.active {
  display: block;
}

/* ============================================
   HERO SCREEN
   ============================================ */

#hero {
  display: none;
  position: relative;
  min-height: 100vh;
  justify-content: center;
  align-items: center;
  padding: 2rem;
  overflow: hidden;
}

#hero.active {
  display: flex;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
  text-align: center;
}

.hero-title {
  font-family: var(--font-sans);
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--text-secondary);
  border-left: 3px solid var(--accent-primary);
  padding-left: 1.25rem;
  margin: 0 auto 1.5rem;
  max-width: 480px;
  text-align: left;
}

.hero-quote cite {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  font-style: normal;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
}

.hero-subtitle strong {
  color: var(--text-primary);
}

.hero-bg-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: clamp(15rem, 30vw, 35rem);
  font-weight: 700;
  color: rgba(124, 111, 247, 0.03);
  letter-spacing: -0.05em;
  user-select: none;
  pointer-events: none;
  z-index: 1;
}

/* Location Input */
.location-input {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.location-box {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 0.25rem;
  width: 100%;
  max-width: 320px;
  transition: border-color 0.2s;
}

.location-box:focus-within {
  border-color: var(--accent-primary);
}

.location-box input {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1.05rem;
  padding: 0.75rem 1rem;
  outline: none;
}

.location-box input::placeholder {
  color: var(--text-muted);
}

.btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: none;
  background: var(--accent-primary-soft);
  color: var(--accent-primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.2s;
}

.btn-icon:hover {
  background: rgba(124, 111, 247, 0.25);
}

.btn-primary {
  background: var(--accent-primary);
  color: #fff;
  border: none;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  width: 100%;
  max-width: 320px;
}

.btn-primary:hover:not(:disabled) {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ============================================
   APP HEADER
   ============================================ */

.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background: rgba(15, 15, 26, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.logo {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.tab-nav {
  display: flex;
  gap: 0.25rem;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 0.2rem;
}

.tab {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border: none;
  background: none;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}

.tab:hover {
  color: var(--text-secondary);
}

.tab.active {
  background: var(--bg-surface);
  color: var(--text-primary);
}

.tab.active[data-tab="now"] { color: var(--accent-now); }
.tab.active[data-tab="soon"] { color: var(--accent-soon); }
.tab.active[data-tab="learn"] { color: var(--accent-learn); }

.tab-icon {
  font-size: 0.75rem;
  font-weight: 700;
}

.location-badge {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  cursor: pointer;
  transition: border-color 0.2s;
}

.location-badge:hover {
  border-color: var(--accent-primary);
}

/* ============================================
   TAB PANELS
   ============================================ */

.tab-panel {
  display: none;
  padding: 1.5rem;
  max-width: 720px;
  margin: 0 auto;
}

.tab-panel.active {
  display: block;
}

.panel-intro {
  margin-bottom: 1.5rem;
}

.panel-intro h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.panel-intro p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ============================================
   CARDS
   ============================================ */

.card-feed {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  transition: border-color 0.2s, background 0.2s;
  cursor: pointer;
}

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

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.card-category {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

.card-category.mutual-aid {
  background: var(--accent-now-soft);
  color: var(--accent-now);
}

.card-category.volunteer {
  background: var(--accent-soon-soft);
  color: var(--accent-soon);
}

.card-category.civic {
  background: var(--accent-primary-soft);
  color: var(--accent-primary);
}

.card-category.food {
  background: rgba(255, 180, 50, 0.15);
  color: #ffb432;
}

.card-category.emergency {
  background: rgba(255, 70, 70, 0.15);
  color: #ff4646;
}

.card-urgency {
  font-size: 0.75rem;
  color: var(--accent-now);
  font-weight: 500;
  white-space: nowrap;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 0.4rem;
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 0.75rem;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.card-meta-item {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.card-action {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1rem;
  padding: 0.5rem 1rem;
  background: var(--accent-primary-soft);
  color: var(--accent-primary);
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.card-action:hover {
  background: rgba(124, 111, 247, 0.25);
}

/* Now cards - left accent border */
#panel-now .card {
  border-left: 3px solid var(--accent-now);
}

#panel-soon .card {
  border-left: 3px solid var(--accent-soon);
}

/* ============================================
   LEARN GRID
   ============================================ */

.learn-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.learn-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.learn-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}

.learn-card-number {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-learn);
  margin-bottom: 0.75rem;
}

.learn-card h4 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.learn-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.learn-card-time {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ============================================
   FEED END
   ============================================ */

.feed-end {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.feed-end p:first-child {
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.feed-end-sub {
  font-size: 0.85rem;
}

.link-btn {
  background: none;
  border: none;
  color: var(--accent-primary);
  font-family: var(--font-sans);
  font-size: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.link-btn:hover {
  opacity: 0.8;
}

/* ============================================
   MODAL
   ============================================ */

.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  justify-content: center;
  align-items: center;
  padding: 1rem;
}

.modal.open {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 2rem;
  max-width: 640px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.modal-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.modal-details {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  padding: 1rem;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
}

.modal-detail {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.modal-detail strong {
  color: var(--text-primary);
}

.modal-cta {
  width: 100%;
  padding: 0.85rem;
  background: var(--accent-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
}

.modal-cta:hover {
  opacity: 0.9;
}

.modal-links {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.modal-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent-primary);
  font-size: 0.85rem;
  text-decoration: none;
  font-weight: 500;
}

.modal-link:hover {
  text-decoration: underline;
}

/* Field Manual article view */
.article-view {
  line-height: 1.7;
}

.article-view h4 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.article-view h5 {
  font-size: 1rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--accent-learn);
}

.article-view p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.article-view ul {
  margin: 0.5rem 0 1rem 1.25rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.article-view li {
  margin-bottom: 0.4rem;
}

.article-view .callout {
  background: var(--accent-learn-soft);
  border-left: 3px solid var(--accent-learn);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.5rem 0;
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--text-primary);
  font-size: 0.95rem;
}

/* ============================================
   RESPONSIVE
   ============================================ */

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

@media (min-width: 960px) {
  .learn-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  #panel-learn {
    max-width: 960px;
  }
}

@media (max-width: 640px) {
  .app-header {
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
  }

  .header-left, .header-right {
    display: none;
  }

  .tab-panel {
    padding: 1rem;
  }

  .hero-quote {
    font-size: 1rem;
  }
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

.card, .learn-card {
  animation: fadeInUp 0.4s ease both;
}

.card:nth-child(2), .learn-card:nth-child(2) { animation-delay: 0.05s; }
.card:nth-child(3), .learn-card:nth-child(3) { animation-delay: 0.1s; }
.card:nth-child(4), .learn-card:nth-child(4) { animation-delay: 0.15s; }
.card:nth-child(5), .learn-card:nth-child(5) { animation-delay: 0.2s; }
.card:nth-child(6), .learn-card:nth-child(6) { animation-delay: 0.25s; }
.learn-card:nth-child(7) { animation-delay: 0.3s; }
.learn-card:nth-child(8) { animation-delay: 0.35s; }
.learn-card:nth-child(9) { animation-delay: 0.4s; }
.learn-card:nth-child(10) { animation-delay: 0.45s; }
.learn-card:nth-child(11) { animation-delay: 0.5s; }
.learn-card:nth-child(12) { animation-delay: 0.55s; }
.learn-card:nth-child(n+13) { animation-delay: 0.6s; }

/* Subtle pulse for urgent items */
@keyframes urgentPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.card-urgency {
  animation: urgentPulse 2s ease-in-out infinite;
}

/* Loading state for feeds */
.feed-loading {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1rem;
  animation: feedLoadingPulse 1.8s ease-in-out infinite;
}

@keyframes feedLoadingPulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}