:root {
  --bg: #0a0d0f;
  --bg2: #0f1417;
  --bg3: #141a1e;
  --panel: #161d22;
  --border: #1e2d35;
  --border2: #243540;
  --green: #00ff88;
  --green2: #00cc6a;
  --green3: #007a40;
  --amber: #ffb300;
  --amber2: #cc8a00;
  --cyan: #00d4ff;
  --cyan2: #0099bb;
  --red: #ff4444;
  --text: #c8d8e0;
  --text2: #7a9aaa;
  --text3: #ffffff;
  --mono: 'Share Tech Mono', monospace;
  --sans: 'Exo 2', sans-serif;
  --nav-w: 72px;
  --transition: 0.2s ease;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  display: flex;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.03) 2px, rgba(0,0,0,0.03) 4px);
  pointer-events: none;
  z-index: 9999;
}

/* ============================================ */
/* SIDEBAR                                      */
/* ============================================ */
#sidebar {
  position: fixed;
  left: 0; top: 0; bottom: 0;
  width: var(--nav-w);
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0;
  z-index: 100;
}

#logo-block {
  width: 100%;
  padding: 18px 0 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

#logo-block .callsign {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--green);
  letter-spacing: 1px;
}

#logo-block .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s infinite;
}

/* Logo de antena animado */
.antenna-container {
  padding: 15px 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.antenna-icon {
  width: 42px;
  height: 42px;
}

/* Ondas de transmisión */
.wave {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: transmitWave 1.5s ease-in-out infinite;
}

.wave1 { animation-delay: 0s; }
.wave2 { animation-delay: 0.3s; }
.wave3 { animation-delay: 0.6s; }

@keyframes transmitWave {
  0% { stroke-dashoffset: 100; opacity: 1; }
  50% { stroke-dashoffset: 0; opacity: 0.5; }
  100% { stroke-dashoffset: -100; opacity: 0; }
}

/* Efecto de pulso en la torre */
.antenna-icon rect:first-child {
  animation: towerPulse 2s ease-in-out infinite;
}

@keyframes towerPulse {
  0%, 100% { opacity: 0.8; }
  50% { opacity: 1; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0,255,136,0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(0,255,136,0); }
}

.nav-items {
  flex: 1;
  width: 100%;
  padding: 8px 0;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: none;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px 0;
  cursor: pointer;
  color: var(--text3);
  text-decoration: none;
  font-size: 9px;
  font-family: var(--mono);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  transition: color var(--transition);
  border-left: 2px solid transparent;
  position: relative;
}

.nav-item:hover { color: var(--text2); }
.nav-item.active { color: var(--green); border-left-color: var(--green); }

.nav-icon {
  width: 24px; height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-icon svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
}

#status-bar {
  width: 100%;
  padding: 8px 12px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.status-dot {
  display: flex;
  align-items: center;
  gap: 5px;
  font-family: var(--mono);
  font-size: 8px;
  color: var(--text3);
}

.status-dot::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green);
}

/* ============================================ */
/* MAIN CONTENT                                 */
/* ============================================ */
#main {
  margin-left: var(--nav-w);
  flex: 1;
  min-height: 100vh;
  padding: 0;
}

#topbar {
  position: sticky;
  top: 0;
  background: rgba(10,13,15,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  padding: 10px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 50;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.topbar-title {
  font-family: var(--mono);
  font-size: 18px;
  color: var(--green);
  letter-spacing: 2px;
}

.topbar-sub {
  font-size: 11px;
  color: var(--text3);
  font-family: var(--mono);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

#clock {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--amber);
  letter-spacing: 1px;
}

#txrx-status {
  font-family: var(--mono);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 10px;
  border: 1px solid var(--border2);
  background: rgba(0,0,0,0.2);
}

.status-tx { color: var(--red); font-weight: bold; }
.status-rx { color: var(--green); }
.status-idle { color: var(--text2); }

.lang-toggle {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text2);
  cursor: pointer;
  padding: 4px 8px;
  border: 1px solid var(--border2);
  border-radius: 2px;
  background: none;
  transition: all var(--transition);
}

.lang-toggle:hover { color: var(--cyan); border-color: var(--cyan2); }

.page-content {
  padding: 20px 28px 28px 28px;
}

/* ============================================ */
/* SECTIONS                                     */
/* ============================================ */
.section {
  display: none;
  padding: 28px;
  min-height: calc(100vh - 56px);
  animation: fadeIn 0.3s ease;
}

.section.active { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

.section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.section-header h1 {
  font-family: var(--mono);
  font-size: 16px;
  color: var(--green);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.section-header .tag {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--text3);
  padding: 2px 8px;
  border: 1px solid var(--border2);
  border-radius: 2px;
}

/* ============================================ */
/* GRIDS                                        */
/* ============================================ */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

@media (max-width: 1200px) { .grid-4 { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 900px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
}

/* ============================================ */
/* PANELS                                       */
/* ============================================ */
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg3);
}

.panel-header .label {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text3);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.panel-header .indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
}

.panel-body { padding: 16px; }

/* ============================================ */
/* STATS                                        */
/* ============================================ */
.stat {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 14px 16px;
}

.stat-label {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--text3);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.stat-value {
  font-family: var(--mono);
  font-size: 22px;
  color: var(--green);
  line-height: 1;
}

.stat-unit {
  font-size: 10px;
  color: var(--text3);
  margin-top: 3px;
}

/* ============================================ */
/* SERVICE CARDS                                */
/* ============================================ */
.service-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 20px;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  display: block;
  color: inherit;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px;
  height: 100%;
  background: var(--green3);
  transition: background var(--transition);
}

.service-card:hover {
  border-color: var(--border2);
  background: var(--bg3);
  transform: translateY(-2px);
  box-shadow: 0 0 10px rgba(0,255,136,0.2);
}

.service-card:hover::before { background: var(--green); }

.service-card .sc-icon {
  width: 36px;
  height: 36px;
  margin-bottom: 12px;
  color: var(--green);
}

.service-card h3 {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text);
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.service-card p {
  font-size: 12px;
  color: var(--text3);
  line-height: 1.5;
}

.service-card .sc-status {
  margin-top: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 9px;
  color: var(--green);
}

.service-card .sc-status::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s infinite;
}

.service-card.amber::before { background: var(--amber2); }
.service-card.amber:hover::before { background: var(--amber); }
.service-card.amber .sc-icon,
.service-card.amber .sc-status { color: var(--amber); }
.service-card.amber .sc-status::before { background: var(--amber); }

.service-card.cyan::before { background: var(--cyan2); }
.service-card.cyan:hover::before { background: var(--cyan); }
.service-card.cyan .sc-icon,
.service-card.cyan .sc-status { color: var(--cyan); }
.service-card.cyan .sc-status::before { background: var(--cyan); }

/* ============================================ */
/* SDR SECTION                                  */
/* ============================================ */
.sdr-frame-wrap {
  position: relative;
  width: 100%;
  padding-top: 62%;
  background: #000;
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.sdr-frame-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* ============================================ */
/* WEATHER                                      */
/* ============================================ */
.weather-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
}

.wx-card {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 12px;
  text-align: center;
}

.wx-icon {
  font-size: 24px;
  margin-bottom: 6px;
}

.wx-val {
  font-family: var(--mono);
  font-size: 18px;
  color: var(--cyan);
}

.wx-label {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--text3);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-top: 4px;
}

/* ============================================ */
/* PROPAGATION BANDS                            */
/* ============================================ */
.band-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}

.band-row:last-child { border: none; }

.band-name {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text2);
  width: 48px;
  flex-shrink: 0;
}

.band-bar-wrap {
  flex: 1;
  height: 6px;
  background: var(--bg);
  border-radius: 1px;
  overflow: hidden;
}

.band-bar {
  height: 100%;
  border-radius: 1px;
  transition: width 1s ease;
  background: rgba(255,255,255,0.05);
  position: relative;
  overflow: hidden;
}

/* Efecto de flujo en la barra */
.band-bar::after {
  content: "";
  position: absolute;
  top: 0;
  left: -40%;
  width: 40%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: flow 2s linear infinite;
}

@keyframes flow {
  0% { left: -40%; }
  100% { left: 100%; }
}

.band-cond {
  font-family: var(--mono);
  font-size: 10px;
  white-space: nowrap;
  min-width: 95px;
  text-align: center;
  padding: 4px 8px;
  border-radius: 4px;
  font-weight: 500;
  flex-shrink: 0;
}

@media (max-width: 640px) {
  .band-cond {
    min-width: 85px;
    font-size: 9px;
    padding: 3px 6px;
  }
  .band-name {
    width: 42px;
    font-size: 10px;
  }
  .band-row {
    gap: 8px;
  }
}

/* Colores de propagación */
.band-bar.excellent, .band-cond.excellent { background: var(--green); color: var(--green); }
.band-bar.very_good, .band-cond.very_good { background: var(--green2); color: var(--green2); }
.band-bar.good, .band-cond.good { background: var(--green3); color: var(--green3); }
.band-bar.fair, .band-cond.fair { background: var(--amber); color: var(--amber); }
.band-bar.poor, .band-cond.poor { background: var(--red); color: var(--red); }

/* ============================================ */
/* NODE STATUS                                  */
/* ============================================ */
.node-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}

.node-card {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 14px;
  position: relative;
}

.node-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--green3);
}

.node-card.online::before { background: var(--green); }
.node-card.offline::before { background: var(--red); }

.node-name {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}

.node-status {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.node-status.online { color: var(--green); }
.node-status.offline { color: var(--red); }

.node-info {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--text3);
  margin-top: 4px;
}

/* ============================================ */
/* LOGBOOK TABLE                                */
/* ============================================ */
.log-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 11px;
}

.log-table th {
  padding: 8px 12px;
  text-align: left;
  font-size: 9px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text3);
  border-bottom: 1px solid var(--border);
  background: var(--bg3);
}

.log-table td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text2);
  vertical-align: middle;
}

.log-table tr:hover td { background: rgba(255,255,255,0.02); }

.log-table .callsign-cell { color: var(--green); }
.log-table .freq-cell { color: var(--amber); }
.log-table .mode-badge {
  display: inline-block;
  padding: 2px 6px;
  border: 1px solid var(--border2);
  border-radius: 1px;
  font-size: 9px;
  color: var(--cyan);
}

.log-table .rst-cell { color: var(--text); }

/* ============================================ */
/* BLOG                                         */
/* ============================================ */
.blog-list { display: flex; flex-direction: column; gap: 1px; }

.blog-item {
  display: flex;
  align-items: stretch;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
  cursor: pointer;
  transition: border-color var(--transition);
  text-decoration: none;
  color: inherit;
}

.blog-item:hover { border-color: var(--border2); }

.blog-stripe {
  width: 3px;
  background: var(--border2);
  flex-shrink: 0;
}

.blog-stripe.ham { background: var(--green3); }
.blog-stripe.tech { background: var(--cyan2); }
.blog-stripe.dx { background: var(--amber2); }

.blog-content { padding: 16px 20px; flex: 1; }

.blog-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.blog-date {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--text3);
  letter-spacing: 0.5px;
}

.blog-tag {
  font-family: var(--mono);
  font-size: 9px;
  padding: 1px 6px;
  border: 1px solid var(--border2);
  border-radius: 1px;
  color: var(--text3);
}

.blog-title {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
  line-height: 1.3;
}

.blog-excerpt {
  font-size: 12px;
  color: var(--text3);
  line-height: 1.5;
}

.blog-arrow {
  display: flex;
  align-items: center;
  padding: 16px;
  color: var(--text3);
  font-size: 16px;
}

/* ============================================ */
/* GALLERY                                      */
/* ============================================ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 8px;
}

.gallery-item {
  aspect-ratio: 4/3;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
  cursor: pointer;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text3);
  font-family: var(--mono);
  font-size: 10px;
  transition: border-color var(--transition);
}

.gallery-item:hover { border-color: var(--border2); }

.gallery-item .placeholder-icon {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0.4;
}

.gallery-item img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ============================================ */
/* ABOUT / QRZ                                  */
/* ============================================ */
.profile-card {
  display: flex;
  gap: 28px;
  align-items: flex-start;
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 2px;
  margin-bottom: 20px;
}

.avatar-hex {
  flex-shrink: 0;
  width: 96px;
  height: 96px;
  background: var(--bg3);
  border: 2px solid var(--green3);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 24px;
  color: var(--green);
  letter-spacing: -1px;
}

.profile-info h2 {
  font-family: var(--mono);
  font-size: 20px;
  color: var(--green);
  letter-spacing: 2px;
  margin-bottom: 4px;
}

.profile-info .qth {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.profile-info p {
  font-size: 13px;
  color: var(--text2);
  max-width: 500px;
  line-height: 1.6;
}

.awards-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.award-badge {
  font-family: var(--mono);
  font-size: 9px;
  padding: 3px 10px;
  border: 1px solid var(--border2);
  border-radius: 2px;
  color: var(--amber);
  letter-spacing: 0.5px;
}

/* ============================================ */
/* IFRAME                                       */
/* ============================================ */
.iframe-wrap {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
  background: var(--bg3);
}

.iframe-wrap iframe {
  width: 100%;
  border: none;
  display: block;
}

/* ============================================ */
/* TERMINAL                                     */
/* ============================================ */
.terminal {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--green);
  line-height: 2;
  padding: 16px;
  background: #050708;
  border: 1px solid var(--border);
  border-radius: 2px;
  box-shadow: inset 0 0 10px rgba(0,0,0,0.6);
  max-height: 180px;
  overflow: auto;
}

.terminal .dim { color: var(--text3); }
.terminal .amber { color: var(--amber); }
.terminal .cyan { color: var(--cyan); }

/* ============================================ */
/* SCROLLBAR                                    */
/* ============================================ */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 2px; }
.terminal::-webkit-scrollbar-thumb { background: var(--green3); }

/* ============================================ */
/* HERO                                         */
/* ============================================ */
.hero {
  margin-bottom: 20px;
  padding: 10px 0 5px 0;
}

.hero h1 {
  font-size: 28px;
  margin: 0;
  letter-spacing: 2px;
  color: var(--green);
}

.hero p {
  opacity: 0.7;
  margin: 4px 0 10px;
}

.hero-status span {
  display: inline-block;
  margin-right: 10px;
  font-size: 10px;
  padding: 4px 12px;
  border-radius: 20px;
  background: rgba(0, 255, 136, 0.08);
  border: 1px solid var(--green3);
  color: var(--green);
}

/* ============================================ */
/* SERVICES GRID (HOME)                         */
/* ============================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
  margin-top: 10px;
}

.services-grid .service-card {
  padding: 16px;
  border: 1px solid var(--border);
  background: var(--bg2);
  text-decoration: none;
  transition: 0.2s;
  position: relative;
  overflow: hidden;
}

.services-grid .service-card:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
  box-shadow: 0 0 10px rgba(0,255,136,0.2);
}

.services-grid .service-card.amber { border-left: 3px solid var(--amber); }
.services-grid .service-card.cyan { border-left: 3px solid var(--cyan); }

.services-grid .service-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(0,255,136,0.08), transparent 70%);
  opacity: 0;
  transition: opacity 0.3s;
}

.services-grid .service-card:hover::after { opacity: 1; }

/* ============================================ */
/* LIVE BAR                                     */
/* ============================================ */
.live-bar {
  background: #0a0c10;
  border: 1px solid var(--border);
  border-left: 2px solid var(--green);
  padding: 6px 12px;
  font-size: 12px;
  font-family: var(--mono);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 15px;
  margin-top: 5px;
}

.live-dot {
  width: 8px;
  height: 8px;
  background: #00ff88;
  border-radius: 50%;
  animation: pulse 1s infinite;
}

/* ============================================ */
/* LAYOUTS                                      */
/* ============================================ */
.propagation-terminal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 20px;
}

.stats-bottom {
  margin-top: 30px;
  opacity: 0.7;
}

.stats-bottom .stat {
  background: var(--bg3);
}

/* ============================================ */
/* RESPONSIVE                                   */
/* ============================================ */
@media (max-width: 768px) {
  :root { --nav-w: 56px; }
  
  .page-content { padding: 16px 16px 20px 16px; }
  .section { padding: 16px; }
  .profile-card { flex-direction: column; }
  .topbar-right .topbar-sub { display: none; }
  #topbar { padding: 8px 16px; }
  
  .hero h1 { font-size: 22px; }
  .services-grid { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .terminal { font-size: 10px; }
  .propagation-terminal-grid { grid-template-columns: 1fr; gap: 16px; }
  
  .hero-status span {
    display: block;
    margin-bottom: 5px;
  }
  
  .live-bar {
    font-size: 10px;
    padding: 5px 8px;
  }
  
  .services-grid .service-card {
    padding: 14px;
  }
}

@media (max-width: 480px) {
  #topbar {
    padding: 6px 10px;
  }
  
  .topbar-left {
    gap: 8px;
  }
  
  .topbar-title {
    font-size: 14px;
    letter-spacing: 1px;
  }
  
  .topbar-sub {
    font-size: 9px;
    white-space: nowrap;
  }
  
  .topbar-right {
    gap: 10px;
    align-items: center;
  }
  
  #clock {
    font-size: 11px;
    letter-spacing: 0;
  }
  
  #txrx-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    font-size: 10px;
    padding: 2px 6px;
    line-height: 1;
  }
}
/* Rango medio: tablet vertical (557px - 775px) - 2 columnas */
@media (min-width: 557px) and (max-width: 775px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .services-grid .service-card {
        padding: 14px 12px;
    }
    
    .services-grid .service-card h3 {
        font-size: 12px;
        margin-bottom: 4px;
    }
    
    .services-grid .service-card p {
        font-size: 10px;
        line-height: 1.3;
        margin-bottom: 8px;
    }
    
    .services-grid .service-card .sc-status {
        font-size: 8px;
    }
    
    /* Stats grid también a 2 columnas */
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    /* Propagación y terminal apilados */
    .propagation-terminal-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    /* Bandas más compactas */
    .band-row {
        gap: 6px;
        padding: 6px 0;
    }
    
    .band-name {
        width: 35px;
        font-size: 9px;
    }
    
    .band-cond {
        min-width: 65px;
        font-size: 8px;
        padding: 2px 5px;
    }
    
    .band-bar-wrap {
        height: 5px;
    }
    
    /* Terminal más compacta */
    .terminal {
        font-size: 10px;
        padding: 12px;
        max-height: 160px;
    }
    
    /* Hero más compacto */
    .hero h1 {
        font-size: 24px;
    }
    
    .hero-status span {
        font-size: 9px;
        padding: 3px 10px;
        margin-right: 6px;
    }
    
    /* Stats bottom */
    .stats-bottom {
        margin-top: 20px;
    }
    
    .stat-value {
        font-size: 18px;
    }
    
    .stat-label {
        font-size: 8px;
    }
}