/* =========================================================
   PULZAP — Design System & Aesthetic Themes
   ========================================================= */

:root {
  --font-mono: 'JetBrains Mono', monospace;
  --font-sans: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Newsreader', Georgia, serif;
  
  --transition-smooth: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --border-radius-sm: 6px;
  --border-radius-md: 10px;
  --border-radius-lg: 16px;
  --border-radius-full: 9999px;
}

/* 🌑 THEME 1: OLED Oscuro (Default) */
[data-theme="oled"] {
  --bg-primary: #000000;
  --bg-secondary: #0d0d11;
  --bg-card: #121217;
  --bg-hover: #1c1c24;
  --border-color: #272733;
  --border-glow: rgba(56, 189, 248, 0.3);
  --text-main: #f4f4f5;
  --text-muted: #71717a;
  --text-dim: #52525b;
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.12);
  --accent-text: #000000;
  --badge-bg: #1e293b;
  --badge-text: #94a3b8;
  --radar-color: #38bdf8;
  --font-body: var(--font-sans);
}

/* 📟 THEME 2: Ámbar 1982 (Retro CRT Terminal) */
[data-theme="amber"] {
  --bg-primary: #080500;
  --bg-secondary: #120b00;
  --bg-card: #1c1200;
  --bg-hover: #291a00;
  --border-color: #4a3000;
  --border-glow: rgba(255, 176, 0, 0.4);
  --text-main: #ffb000;
  --text-muted: #c28600;
  --text-dim: #7a5400;
  --accent: #ffb000;
  --accent-soft: rgba(255, 176, 0, 0.15);
  --accent-text: #080500;
  --badge-bg: #2b1c00;
  --badge-text: #ffb000;
  --radar-color: #ffb000;
  --font-body: var(--font-mono);
}

/* 📜 THEME 3: Papel E-Ink (Calm Daylight Reading) */
[data-theme="eink"] {
  --bg-primary: #f6f3eb;
  --bg-secondary: #ece7db;
  --bg-card: #ffffff;
  --bg-hover: #f0ece1;
  --border-color: #d8d2c4;
  --border-glow: rgba(0, 0, 0, 0.1);
  --text-main: #1f1f1f;
  --text-muted: #66635c;
  --text-dim: #949086;
  --accent: #1f1f1f;
  --accent-soft: rgba(0, 0, 0, 0.07);
  --accent-text: #ffffff;
  --badge-bg: #eae5d7;
  --badge-text: #3b3a36;
  --radar-color: #403e39;
  --font-body: var(--font-serif);
}

/* 🌿 THEME 4: Cyber Matrix (Phosphor Green) */
[data-theme="matrix"] {
  --bg-primary: #020803;
  --bg-secondary: #051408;
  --bg-card: #081d0c;
  --bg-hover: #0c2b12;
  --border-color: #12441d;
  --border-glow: rgba(34, 197, 94, 0.35);
  --text-main: #4ade80;
  --text-muted: #22c55e;
  --text-dim: #15803d;
  --accent: #22c55e;
  --accent-soft: rgba(34, 197, 94, 0.15);
  --accent-text: #020803;
  --badge-bg: #09280f;
  --badge-text: #4ade80;
  --radar-color: #22c55e;
  --font-body: var(--font-mono);
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.5;
  min-height: 100vh;
  padding: 1.5rem 1rem 4rem;
  transition: background-color 0.3s ease, color 0.3s ease;
  -webkit-font-smoothing: antialiased;
}

.app-container {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

/* =========================================================
   Header & Radar Status
   ========================================================= */

.app-header {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-color);
}

.brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.pulse-beacon {
  width: 12px;
  height: 12px;
  background-color: var(--accent);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 10px var(--radar-color);
  animation: beacon-heartbeat 2s infinite ease-in-out;
}

@keyframes beacon-heartbeat {
  0%, 100% {
    transform: scale(0.9);
    opacity: 0.7;
  }
  50% {
    transform: scale(1.3);
    opacity: 1;
    box-shadow: 0 0 18px var(--radar-color);
  }
}

.brand-title {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  font-family: var(--font-mono);
}

.brand-badge {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.6rem;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-full);
  font-family: var(--font-mono);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pill-btn {
  background-color: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.45rem 0.9rem;
  font-size: 0.82rem;
  font-family: var(--font-mono);
  border-radius: var(--border-radius-full);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  text-decoration: none;
  transition: var(--transition-smooth);
}

.pill-btn:hover {
  background-color: var(--bg-hover);
  border-color: var(--accent);
}

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

.pill-btn.ghost {
  background: transparent;
}

.sponsor-btn {
  color: var(--text-muted);
}
.sponsor-btn:hover {
  color: var(--text-main);
}

.brand-subtitle {
  font-size: 0.92rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* Theme Dropdown */
.theme-dropdown-container {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 0.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  z-index: 50;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  min-width: 170px;
}

.dropdown-menu.hidden {
  display: none;
}

.menu-item {
  background: transparent;
  color: var(--text-main);
  border: none;
  text-align: left;
  padding: 0.5rem 0.75rem;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.menu-item:hover {
  background-color: var(--accent-soft);
  color: var(--accent);
}

/* Status Bar & Dynamic Radius Indicator */
.status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 0.65rem 1rem;
  border-radius: var(--border-radius-md);
  font-size: 0.82rem;
  font-family: var(--font-mono);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.geo-radar-ping {
  width: 8px;
  height: 8px;
  background-color: var(--accent);
  border-radius: 50%;
  position: relative;
}

.geo-radar-ping::after {
  content: '';
  position: absolute;
  top: -4px;
  left: -4px;
  right: -4px;
  bottom: -4px;
  border: 1px solid var(--radar-color);
  border-radius: 50%;
  animation: radar-wave 1.8s infinite cubic-bezier(0, 0.2, 0.8, 1);
}

@keyframes radar-wave {
  0% { transform: scale(0.5); opacity: 1; }
  100% { transform: scale(2.5); opacity: 0; }
}

.location-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.text-link-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-family: var(--font-mono);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: var(--transition-smooth);
}

.text-link-btn:hover {
  color: var(--accent);
}

/* =========================================================
   Composer Card
   ========================================================= */

.composer-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 1.25rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.composer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.9rem;
}

.alias-input-wrapper {
  display: flex;
  align-items: center;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-full);
  padding: 0.25rem 0.6rem 0.25rem 0.8rem;
  gap: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.alias-prefix {
  color: var(--text-dim);
  font-weight: 600;
}

.alias-input-wrapper input {
  background: transparent;
  border: none;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  outline: none;
  width: 140px;
}

.alias-input-wrapper input::placeholder {
  color: var(--text-dim);
}

.icon-action-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  opacity: 0.7;
  transition: var(--transition-smooth);
}

.icon-action-btn:hover {
  opacity: 1;
  transform: rotate(15deg);
}

/* TTL Toggle */
.ttl-toggle-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.ttl-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  user-select: none;
}

.ttl-label input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  width: 32px;
  height: 18px;
  background-color: var(--bg-hover);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-full);
  position: relative;
  transition: var(--transition-smooth);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 12px;
  height: 12px;
  background-color: var(--text-muted);
  border-radius: 50%;
  transition: var(--transition-smooth);
}

.ttl-label input:checked + .toggle-slider {
  background-color: var(--accent-soft);
  border-color: var(--accent);
}

.ttl-label input:checked + .toggle-slider::before {
  transform: translateX(14px);
  background-color: var(--accent);
}

.toggle-text {
  color: var(--text-main);
  font-weight: 500;
}

.ttl-hint {
  color: var(--text-dim);
  font-size: 0.75rem;
}

/* Textarea */
.textarea-container textarea {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 1.05rem;
  resize: none;
  line-height: 1.6;
}

.textarea-container textarea::placeholder {
  color: var(--text-dim);
}

/* Composer Footer */
.composer-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
}

.char-counter-container {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.char-progress-bar {
  width: 50px;
  height: 4px;
  background-color: var(--bg-secondary);
  border-radius: var(--border-radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background-color: var(--accent);
  transition: width 0.15s ease;
}

.progress-fill.warn {
  background-color: #eab308;
}

.progress-fill.max {
  background-color: #ef4444;
}

.emit-pulse-btn {
  background-color: var(--accent);
  color: var(--accent-text);
  border: none;
  padding: 0.6rem 1.25rem;
  border-radius: var(--border-radius-full);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition-smooth);
}

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

.emit-pulse-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

/* =========================================================
   Feed Header & Stream
   ========================================================= */

.feed-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  padding: 0 0.25rem;
}

.feed-rhythm-badge {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

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

/* Pulse Card */
.pulse-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color 0.2s ease, opacity 0.35s ease, transform 0.35s ease;
}

.pulse-card.zap-new {
  animation: pulse-appear 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.pulse-card.zap-leaving {
  opacity: 0 !important;
  transform: translateY(-8px) scale(0.98);
  pointer-events: none;
}

.pulse-card:hover {
  border-color: var(--border-glow);
}

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

.pulse-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-family: var(--font-mono);
}

.pulse-author-group {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.pulse-alias {
  font-weight: 600;
  color: var(--text-main);
}

.pulse-distance-badge {
  background-color: var(--badge-bg);
  color: var(--badge-text);
  padding: 0.15rem 0.5rem;
  border-radius: var(--border-radius-full);
  font-size: 0.72rem;
}

.pulse-timing-group {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-muted);
}

.pulse-views-badge {
  color: var(--text-muted);
  font-size: 0.72rem;
  font-family: var(--font-mono);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background-color: var(--badge-bg);
  padding: 0.15rem 0.45rem;
  border-radius: var(--border-radius-sm);
}

.pulse-expires-badge {
  color: var(--accent);
  background-color: var(--accent-soft);
  padding: 0.15rem 0.45rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.72rem;
}

.pulse-text {
  font-size: 1rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text-main);
}

/* Loading & Empty States */
.loading-state, .empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  background-color: var(--bg-secondary);
  border: 1px dashed var(--border-color);
  border-radius: var(--border-radius-lg);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.empty-state h4 {
  color: var(--text-main);
  font-size: 1.1rem;
}

.radar-scan {
  width: 40px;
  height: 40px;
  border: 2px solid var(--accent);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* =========================================================
   Location Modal
   ========================================================= */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 100;
}

.modal-overlay.hidden {
  display: none;
}

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 1.5rem;
  max-width: 460px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.modal-card h3 {
  font-size: 1.15rem;
  font-family: var(--font-mono);
}

.modal-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.city-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.chip {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.35rem 0.7rem;
  border-radius: var(--border-radius-full);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.chip:hover, .chip.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.form-row-coords {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.form-row-coords label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  margin-bottom: 0.25rem;
}

.form-row-coords input {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: 0.45rem 0.6rem;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.modal-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  flex-wrap: wrap;
}

/* =========================================================
   Footer & Manifesto
   ========================================================= */

.app-footer {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.manifesto-note {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

.stats-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 1.1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-top: 0.5rem;
}

.stats-header-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.stats-radar-dot {
  width: 6px;
  height: 6px;
  background-color: var(--accent);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 6px var(--accent);
  animation: radar-ping 1.5s infinite;
}

.stats-title {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-weight: 600;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}

.stat-box {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: 0.75rem 0.5rem;
  text-align: center;
  align-items: center;
  transition: var(--transition-smooth);
}

.stat-box:hover {
  border-color: var(--border-glow);
}

.stat-number {
  font-size: 1.4rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--accent);
  line-height: 1;
  letter-spacing: 0.05em;
  text-shadow: 0 0 10px var(--accent-soft);
}

.stat-label {
  font-size: 0.68rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.footer-bottom-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding-top: 0.5rem;
}

.coffee-link {
  color: var(--accent);
  text-decoration: none;
  transition: var(--transition-smooth);
}

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

/* Cooldown Toast */
.toast-notice {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--bg-card);
  border: 1px solid var(--accent);
  color: var(--text-main);
  padding: 0.6rem 1.2rem;
  border-radius: var(--border-radius-full);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  z-index: 200;
  animation: toast-in 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes toast-in {
  from { opacity: 0; transform: translate(-50%, 15px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

@media (max-width: 600px) {
  body { padding: 1rem 0.75rem 3rem; }
  .brand-row { flex-direction: column; align-items: flex-start; }
  .status-bar { flex-direction: column; align-items: flex-start; }
  .composer-header { flex-direction: column; align-items: flex-start; }
}