/* ==========================================================================
   e2Core Engineering & High-Technology Systems
   Modern Corporate Design System (Enhanced Blue Aura Edition)
   ========================================================================== */

:root {
  /* Brand Color Tokens */
  --lime: #2f8cff;
  --lime-bright: #69b7ff;
  --lime-glow: rgba(47, 140, 255, 0.55);
  --lime-subtle: rgba(47, 140, 255, 0.08);
  --lime-border: rgba(47, 140, 255, 0.35);

  --bg-deep: #0b1720;
  --bg-base: #11222c;
  --bg-surface: #182e3b;
  --bg-surface-elevated: #1e3949;
  
  --card-bg: rgba(18, 35, 45, 0.88);
  --card-border: rgba(120, 166, 178, 0.24);

  --text-white: #ffffff;
  --text-main: #f0f7f6;
  --text-muted: #8eaeb6;
  --text-dim: #5c7b84;

  --danger: #ff5c5c;
  --danger-bg: rgba(255, 92, 92, 0.12);
  --danger-border: rgba(255, 92, 92, 0.45);

  --font-sans: 'Manrope', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'DM Mono', Consolas, "SF Mono", monospace;

  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
}

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

html, body {
  width: 100%;
  min-height: 100vh;
  font-family: var(--font-sans);
  background-color: var(--bg-deep);
  color: var(--text-main);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Background Atmosphere */
.bg-ambient {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 18% 30%, #244d78 0%, #172f4a 35%, #0d1d31 70%, #07111f 100%);
  z-index: 0;
  pointer-events: none;
}

.bg-ambient::before {
  content: "";
  position: absolute;
  top: 12%;
  left: 5%;
  width: 50vw;
  height: 50vw;
  max-width: 680px;
  max-height: 680px;
  border: 1px solid rgba(47, 140, 255, 0.14);
  border-radius: 50%;
  transform: rotate(-24deg) scaleY(0.35);
  box-shadow: 
    0 0 0 35px rgba(47, 140, 255, 0.025),
    0 0 0 80px rgba(47, 140, 255, 0.015),
    0 0 140px rgba(47, 140, 255, 0.06);
  pointer-events: none;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(rgba(120, 166, 178, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 166, 178, 0.06) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: radial-gradient(ellipse at 50% 40%, black 20%, transparent 80%);
  z-index: 1;
  pointer-events: none;
}

.noise-layer {
  position: fixed;
  inset: 0;
  opacity: 0.025;
  pointer-events: none;
  z-index: 2;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.75' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* App Wrapper */
.app-layout {
  position: relative;
  z-index: 10;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* ==========================================================================
   Top Header Bar & Brand Showcase
   ========================================================================== */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.15rem 5%;
  background: rgba(11, 23, 32, 0.82);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(120, 166, 178, 0.18);
}

.brand-container {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  text-decoration: none;
  position: relative;
}

/* Logo Topbar */
.brand-logo-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 4px 10px;
}

.brand-logo-wrapper::before {
  content: none;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 210px;
  height: 95px;
  background: radial-gradient(
    ellipse at center, 
    rgba(170, 220, 255, 0.88) 0%, 
    rgba(105, 183, 255, 0.65) 28%, 
    rgba(47, 140, 255, 0.32) 55%, 
    rgba(47, 140, 255, 0) 78%
  );
  filter: blur(18px);
  z-index: 0;
  pointer-events: none;
  transition: all 0.35s ease;
}

.brand-container:hover .brand-logo-wrapper::before {
  width: 240px;
  height: 110px;
  background: radial-gradient(
    ellipse at center, 
    rgba(190, 230, 255, 0.95) 0%, 
    rgba(105, 183, 255, 0.78) 32%, 
    rgba(47, 140, 255, 0.42) 60%, 
    rgba(47, 140, 255, 0) 82%
  );
  filter: blur(20px);
}

.brand-logo-img {
  position: relative;
  z-index: 1;
  height: 48px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.65));
}

.brand-tagline {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border-left: 1px solid rgba(120, 166, 178, 0.25);
  padding-left: 1.25rem;
}

.top-telemetry {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.status-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--lime-subtle);
  border: 1px solid var(--lime-border);
  padding: 0.3rem 0.75rem;
  border-radius: 20px;
  color: var(--text-main);
  font-weight: 500;
}

.pulse-indicator {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 10px var(--lime);
  animation: pulseGlow 2.2s infinite;
}

@keyframes pulseGlow {
  0% { transform: scale(0.95); opacity: 0.8; box-shadow: 0 0 0 0 rgba(47, 140, 255, 0.7); }
  70% { transform: scale(1.1); opacity: 1; box-shadow: 0 0 0 7px rgba(47, 140, 255, 0); }
  100% { transform: scale(0.95); opacity: 0.8; box-shadow: 0 0 0 0 rgba(47, 140, 255, 0); }
}

.clock-display {
  padding-left: 1.25rem;
  border-left: 1px solid rgba(120, 166, 178, 0.2);
  color: var(--text-main);
  letter-spacing: 1px;
}

/* ==========================================================================
   Main Two-Column Shell Layout (Vertically Balanced)
   ========================================================================== */
.main-shell {
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
  padding: 2.2rem 5%;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 4rem;
  flex: 1;
}

/* --------------------------------------------------------------------------
   Left Column (Hero & Geographic Gateway Hub)
   -------------------------------------------------------------------------- */
.hero-content {
  display: flex;
  flex-direction: column;
}

.eyebrow-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 1.5px;
  color: var(--lime);
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.eyebrow-pill .code {
  background: rgba(47, 140, 255, 0.12);
  border: 1px solid var(--lime-border);
  padding: 0.18rem 0.45rem;
  border-radius: var(--radius-xs);
  font-weight: 600;
}

.eyebrow-pill .line {
  width: 32px;
  height: 1px;
  background: var(--lime);
  opacity: 0.6;
}

.hero-title {
  font-size: clamp(1.45rem, 2.2vw, 2.1rem);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.5px;
  color: var(--text-white);
  margin-bottom: 0.85rem;
  text-wrap: balance;
}

.hero-title .gradient-text {
  color: var(--lime);
  background: linear-gradient(135deg, var(--lime-bright) 0%, var(--lime) 50%, #1764c0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-description {
  font-size: 1.05rem;
  font-weight: 400;
  line-height: 1.5;
  color: #b0cbd3;
  max-width: 540px;
  margin-bottom: 1.35rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-description::before {
  content: "—";
  color: var(--lime);
  font-weight: 700;
  opacity: 0.85;
}

/* Topology Circuit Panel */
.geo-panel {
  background: rgba(16, 35, 45, 0.75);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(120, 166, 178, 0.25);
  border-radius: var(--radius-md);
  padding: 1.15rem;
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3);
  margin-bottom: 1.5rem;
}

.geo-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(120, 166, 178, 0.15);
}

.geo-head-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.geo-head-left .icon {
  color: var(--lime);
  font-size: 0.85rem;
}

.geo-head .node-count {
  color: var(--lime);
  font-weight: 600;
}

/* Circuit Graphic Container */
.geo-circuit-container {
  position: relative;
  height: 76px;
  margin: 0.75rem 0 0.95rem;
  background: rgba(7, 18, 24, 0.75);
  border: 1px solid rgba(120, 166, 178, 0.18);
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.geo-circuit-svg {
  width: 100%;
  height: 100%;
}

.circuit-line {
  stroke: rgba(120, 166, 178, 0.2);
  stroke-width: 1.2;
  fill: none;
  transition: all 0.3s ease;
}

.circuit-line.active {
  stroke: var(--lime);
  stroke-width: 2;
  filter: drop-shadow(0 0 6px var(--lime-bright));
  stroke-dasharray: 6 3;
  animation: signalFlow 1.2s linear infinite;
}

@keyframes signalFlow {
  to { stroke-dashoffset: -18; }
}

.topo-node {
  cursor: pointer;
  transition: all 0.3s ease;
}

.topo-node-circle {
  fill: #152c38;
  stroke: rgba(120, 166, 178, 0.4);
  stroke-width: 1.5;
  transition: all 0.3s ease;
}

.topo-node-core {
  fill: #7899a6;
  transition: all 0.3s ease;
}

.topo-node-halo {
  opacity: 0;
  transition: opacity 0.3s ease;
}

.topo-node.active .topo-node-circle {
  stroke: var(--lime);
  fill: #183d47;
  filter: drop-shadow(0 0 8px var(--lime));
}

.topo-node.active .topo-node-core {
  fill: var(--lime-bright);
}

.topo-node.active .topo-node-halo {
  opacity: 1;
}

.topo-node-text {
  font-family: var(--font-mono);
  font-size: 8px;
  fill: var(--text-dim);
  transition: fill 0.3s ease;
}

.topo-node.active .topo-node-text {
  fill: var(--lime);
  font-weight: 700;
}

/* 4 Regional Buttons Grid */
.geo-regions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.55rem;
}

.geo-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 0.65rem 0.6rem;
  background: rgba(10, 24, 32, 0.6);
  border: 1px solid rgba(120, 166, 178, 0.2);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
  position: relative;
}

.geo-btn:hover {
  background: rgba(47, 140, 255, 0.08);
  border-color: var(--lime);
  color: var(--text-white);
  transform: translateY(-2px);
}

.geo-btn.active {
  background: rgba(47, 140, 255, 0.14);
  border-color: var(--lime);
  color: var(--text-white);
  box-shadow: inset 0 0 15px rgba(47, 140, 255, 0.12), 0 4px 14px rgba(0, 0, 0, 0.25);
}

.geo-btn-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  margin-bottom: 0.25rem;
}

.geo-flag-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 16px;
  border-radius: 3px;
  overflow: hidden;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

.geo-flag-svg {
  width: 100%;
  height: 100%;
  display: block;
}

.geo-code {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
}

.geo-btn.active .geo-code {
  color: var(--lime);
  font-weight: 700;
}

.geo-label {
  font-size: 0.74rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
}

/* Metrics Row */
.metrics-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.metric-box {
  border-left: 2px solid rgba(120, 166, 178, 0.25);
  padding-left: 0.85rem;
}

.metric-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 1px;
  margin-bottom: 0.25rem;
  text-transform: uppercase;
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-white);
}

.metric-value span {
  font-size: 0.72rem;
  color: var(--lime);
  margin-left: 2px;
}

/* --------------------------------------------------------------------------
   Right Column (Access Card with Lime Aura & Top Banner Alert)
   -------------------------------------------------------------------------- */
.access-card-wrapper {
  display: flex;
  justify-content: center;
}

.access-card {
  width: 100%;
  max-width: 430px;
  background: var(--card-bg);
  backdrop-filter: blur(24px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 1.85rem 2rem;
  box-shadow: 
    0 24px 60px rgba(0, 0, 0, 0.45),
    0 1px 0 rgba(255, 255, 255, 0.08) inset;
  position: relative;
  overflow: hidden;
}

.access-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 140px;
  height: 140px;
  background: radial-gradient(circle at 100% 0%, var(--lime-glow) 0%, transparent 70%);
  pointer-events: none;
}

/* Logo no Card */
.card-brand-showcase {
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(14, 28, 36, 0.65);
  border: 1px solid rgba(47, 140, 255, 0.25);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.25rem;
  margin-bottom: 1.35rem;
  position: relative;
  overflow: hidden;
  box-shadow: 
    0 8px 25px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.card-brand-showcase::before {
  content: none;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 250px;
  height: 120px;
  background: radial-gradient(
    ellipse at center, 
    rgba(170, 220, 255, 0.88) 0%, 
    rgba(105, 183, 255, 0.65) 30%, 
    rgba(47, 140, 255, 0.3) 58%, 
    rgba(47, 140, 255, 0) 80%
  );
  filter: blur(20px);
  z-index: 0;
  pointer-events: none;
  animation: auraGlowPulse 4s infinite alternate ease-in-out;
}

@keyframes auraGlowPulse {
  0% { transform: translate(-50%, -50%) scale(0.95); opacity: 0.85; }
  100% { transform: translate(-50%, -50%) scale(1.08); opacity: 1; filter: blur(22px); }
}

.card-brand-logo {
  position: relative;
  z-index: 1;
  height: 64px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 4px 14px rgba(0, 0, 0, 0.7));
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 1rem;
  margin-bottom: 1.15rem;
  border-bottom: 1px solid rgba(120, 166, 178, 0.15);
}

.card-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--lime);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.card-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-white);
  letter-spacing: -0.5px;
}

.card-subtitle {
  font-size: 0.76rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.card-lock-icon {
  width: 34px;
  height: 34px;
  background: rgba(47, 140, 255, 0.08);
  border: 1px solid var(--lime-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--lime);
  font-size: 1rem;
}

/* Notice Card */
.auth-notice-card {
  margin-bottom: 1.2rem;
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.95rem;
  display: none;
  animation: slideDownAlert 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  box-shadow: 0 4px 20px rgba(255, 92, 92, 0.25);
}

.auth-notice-card.show {
  display: block;
}

@keyframes slideDownAlert {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.notice-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--danger);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.notice-text {
  font-size: 0.76rem;
  color: var(--text-main);
  line-height: 1.4;
  margin-bottom: 0.4rem;
}

.notice-protocol {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--text-muted);
  background: rgba(0, 0, 0, 0.4);
  padding: 0.2rem 0.45rem;
  border-radius: var(--radius-xs);
  display: inline-block;
}

/* Form Styles */
.form-field {
  margin-bottom: 1.05rem;
}

.form-label {
  display: block;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.38rem;
  letter-spacing: 0.3px;
}

.input-container {
  display: flex;
  align-items: center;
  background: rgba(8, 20, 27, 0.75);
  border: 1px solid rgba(120, 166, 178, 0.25);
  border-radius: var(--radius-sm);
  height: 44px;
  padding: 0 0.85rem;
  transition: all 0.25s ease;
}

.input-container:focus-within {
  border-color: var(--lime);
  background: rgba(8, 20, 27, 0.95);
  box-shadow: 0 0 0 3px rgba(47, 140, 255, 0.15);
}

.input-container.node-updated {
  border-color: var(--lime-bright);
  background: rgba(47, 140, 255, 0.12);
  box-shadow: 0 0 15px rgba(47, 140, 255, 0.35);
  transform: scale(1.01);
}

.input-icon {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-right: 0.75rem;
  transition: color 0.2s ease;
}

.input-container:focus-within .input-icon {
  color: var(--lime);
}

.input-box {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  color: var(--text-white);
  height: 100%;
}

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

.toggle-pass-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0.4rem;
  font-size: 0.85rem;
  transition: color 0.2s ease;
}

.toggle-pass-btn:hover {
  color: var(--text-white);
}

.form-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 0.35rem 0 1.25rem;
  font-size: 0.76rem;
}

.checkbox-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
}

.checkbox-wrap input {
  accent-color: var(--lime);
  width: 14px;
  height: 14px;
}

.help-link {
  color: var(--lime);
  text-decoration: none;
  font-size: 0.76rem;
  transition: opacity 0.2s ease;
}

.help-link:hover {
  opacity: 0.85;
  text-decoration: underline;
}

/* Submit Action Button */
.btn-core-submit {
  width: 100%;
  height: 48px;
  background: var(--lime);
  border: 1px solid var(--lime-bright);
  border-radius: var(--radius-sm);
  color: #0b1720;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 1.25rem;
  transition: all 0.25s ease;
  box-shadow: 0 6px 20px rgba(47, 140, 255, 0.25);
}

.btn-core-submit:hover {
  background: var(--lime-bright);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(47, 140, 255, 0.4);
}

.btn-core-submit:active {
  transform: translateY(0);
}

.btn-core-submit:disabled {
  background: #254052;
  border-color: #355365;
  color: #7899a6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-arrow {
  font-size: 1.15rem;
  transition: transform 0.2s ease;
}

.btn-core-submit:hover .btn-arrow {
  transform: translate(2px, -2px);
}

/* ==========================================================================
   Footer Bar
   ========================================================================== */
.footer-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 5%;
  background: rgba(11, 23, 32, 0.82);
  backdrop-filter: blur(16px);
  border-top: 1px solid rgba(120, 166, 178, 0.15);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.footer-secure-tag {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-muted);
}

.footer-secure-tag i {
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--lime);
}

.footer-regions {
  display: flex;
  gap: 0.4rem;
}

.footer-region-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-dim);
  padding: 0.35rem 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: all 0.2s ease;
}

.footer-region-btn:hover, .footer-region-btn.active {
  border-color: rgba(47, 140, 255, 0.4);
  background: rgba(47, 140, 255, 0.1);
  color: var(--lime);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .main-shell {
    grid-template-columns: 1fr;
    gap: 3rem;
    padding: 2rem 5%;
  }
  .hero-content {
    max-width: 600px;
    margin: 0 auto;
  }
  .access-card-wrapper {
    max-width: 480px;
    width: 100%;
    margin: 0 auto;
  }
  .access-card {
    max-width: 100%;
  }
}

@media (max-width: 640px) {
  .topbar {
    padding: 0.9rem 4%;
  }
  .brand-tagline, .clock-display {
    display: none;
  }
  .hero-title {
    font-size: 2.1rem;
    letter-spacing: -1px;
  }
  .geo-regions-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .metrics-row {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .access-card {
    padding: 1.6rem 1.25rem;
  }
  .footer-bar {
    flex-direction: column;
    gap: 0.85rem;
    text-align: center;
  }
  .footer-left {
    flex-direction: column;
    gap: 0.4rem;
  }
  .footer-regions {
    flex-wrap: wrap;
    justify-content: center;
  }
}