/* ─── Design System: The Terminal Echo ─── */

:root {
  --surface: #131313;
  --surface-low: #1b1b1b;
  --surface-container: #1f1f1f;
  --surface-high: #2a2a2a;
  --surface-highest: #353535;
  --surface-lowest: #0e0e0e;

  --primary: #00FF41;
  --primary-dim: #69df5c;
  --primary-fixed: #72ff70;
  --on-primary: #003907;

  --on-surface: #e2e2e2;
  --on-surface-variant: #b9ccb2;
  --outline: #84967e;
  --outline-variant: #3b4b37;

  --error: #ffb4ab;
  --error-container: #93000a;

  --font: 'Space Grotesk', monospace;
}

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

body {
  background: var(--surface);
  color: var(--on-surface);
  font-family: var(--font);
  min-height: 100vh;
}

/* ─── Header ─── */
header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 60px;
  background: var(--surface);
  box-shadow: 0 0 15px rgba(0, 255, 65, 0.08);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  color: var(--primary);
  font-weight: 700;
  font-size: 0.875rem;
}

.logo-text {
  color: var(--primary);
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.header-nav {
  display: flex;
  gap: 2rem;
}

.nav-link {
  color: var(--on-surface-variant);
  text-decoration: none;
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.5rem 0;
  transition: color 0.1s;
}

.nav-link:hover { color: var(--primary-fixed); }
.nav-link.active { color: var(--primary); border-bottom: 1px solid var(--primary); }

/* ─── Main ─── */
main {
  padding: 100px 5.5rem 4rem 5.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

/* ─── Sections ─── */
.section { display: none; }
.section.active { display: block; }

.section-label {
  font-size: 0.6875rem;
  color: var(--on-surface-variant);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 3px;
  height: 1rem;
  background: var(--primary);
}

.section-title {
  font-size: 3.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 3rem;
  line-height: 1;
}

.cursor { color: var(--primary); }

/* ─── Grid ─── */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

/* Digital Self Card in fleet grid */
.self-card {
  background: var(--surface-high);
  padding: 2rem;
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.15s;
  text-align: center;
}

.self-card:hover {
  transform: translateX(2px);
  box-shadow: 0 0 20px rgba(0, 255, 65, 0.12);
}

.self-card.selected {
  box-shadow: inset 0 0 0 1px var(--primary);
}

.self-card .self-avatar {
  width: 120px;
  height: 120px;
  margin: 0 auto 1.25rem;
  border: 1px solid rgba(59, 75, 55, 0.15);
}

.self-card .self-avatar img {
  width: 100%;
  height: 100%;
}

.self-card .self-name {
  color: var(--primary);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  letter-spacing: 0.05em;
}

.self-card .self-score {
  font-size: 2rem;
  font-weight: 700;
  color: var(--on-surface);
  margin-bottom: 0.75rem;
}

/* Large avatar for detail view */
.avatar-container-lg {
  width: 160px;
  height: 160px;
  margin: 0 auto 1.5rem;
  border: 1px solid rgba(59, 75, 55, 0.15);
}

.avatar-container-lg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.self-card .self-status {
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.self-card .self-status.active { color: var(--primary); }
.self-card .self-status.frozen { color: var(--error); }

/* ─── Cards ─── */
.card {
  background: var(--surface-high);
  padding: 2rem;
  margin-bottom: 1.5rem;
  transition: transform 0.1s;
}

.card:hover { transform: translateX(2px); }

.card-hero { background: var(--surface-low); }

.card-label {
  font-size: 0.6875rem;
  color: var(--on-surface-variant);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

/* ─── Score Display ─── */
.score-display {
  font-size: 4rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 1rem;
}

.score-bar {
  width: 100%;
  height: 4px;
  background: var(--surface-highest);
  margin-bottom: 1rem;
}

.score-bar-fill {
  height: 100%;
  background: var(--primary);
  transition: width 0.8s ease;
}

.score-meta {
  display: flex;
  gap: 2rem;
  font-size: 0.75rem;
}

/* ─── Info Rows ─── */
.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  font-size: 0.875rem;
}

/* ─── Avatar ─── */
.avatar-container {
  width: 120px;
  height: 120px;
  margin: 0 auto 1.5rem;
  border: 1px solid rgba(59, 75, 55, 0.15);
}

.avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar-preview-container {
  display: flex;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.avatar-preview {
  width: 200px;
  height: 200px;
  border: 2px solid var(--primary);
}

/* ─── Credit Card ─── */
.credit-card {
  width: 100%;
  max-width: 360px;
  aspect-ratio: 1.586;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  padding: 24px;
  position: relative;
  margin-bottom: 1.5rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.cc-logo {
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--on-surface-variant);
}

.cc-chip {
  width: 36px;
  height: 28px;
  background: linear-gradient(135deg, #d4af37, #c5a028);
  margin-bottom: 20px;
}

.cc-number {
  font-size: 18px;
  letter-spacing: 3px;
  margin-bottom: 20px;
  color: #fff;
}

.cc-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.cc-label-sm {
  font-size: 8px;
  letter-spacing: 2px;
  color: var(--outline);
  text-transform: uppercase;
}

.cc-value-sm {
  font-size: 12px;
  color: var(--on-surface);
  margin-top: 2px;
}

.cc-brand {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 1px;
}

.cc-type {
  font-size: 9px;
  color: var(--outline);
  letter-spacing: 2px;
}

/* ─── Chips ─── */
.chip-row { display: flex; gap: 0.5rem; margin-top: 1rem; }

.chip {
  background: var(--surface-highest);
  border-left: 2px solid var(--primary);
  color: var(--primary);
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.75rem;
  text-transform: uppercase;
}

/* ─── Stat Cards ─── */
.stat-card {
  background: var(--surface-container);
  padding: 1.5rem;
}

.stat-label {
  font-size: 0.625rem;
  color: var(--on-surface-variant);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
}

/* ─── Color Classes ─── */
.pulse { color: var(--primary); }
.ghost { color: var(--on-surface-variant); }
.dim { color: var(--outline); }
.error-text { color: var(--error); }

/* ─── Buttons ─── */
.btn-primary {
  display: block;
  width: 100%;
  padding: 1rem 2rem;
  background: var(--primary);
  color: var(--on-primary);
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  margin-top: 1.5rem;
  transition: box-shadow 0.15s;
}

.btn-primary:hover {
  box-shadow: 0 0 20px rgba(0, 255, 65, 0.3);
}

.btn-primary:active { transform: scale(0.98); }

.btn-secondary {
  background: none;
  border: 1px solid rgba(132, 150, 126, 0.2);
  color: var(--primary);
  font-family: var(--font);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  padding: 0.5rem 1rem;
  cursor: pointer;
}

/* ─── Forms ─── */
.card-form { max-width: 600px; }

.form-group { margin-bottom: 2rem; }

.form-label {
  display: block;
  font-size: 0.6875rem;
  color: var(--on-surface-variant);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.form-input {
  width: 100%;
  background: none;
  border: none;
  border-bottom: 1px solid var(--outline);
  color: var(--on-surface);
  font-family: var(--font);
  font-size: 1rem;
  padding: 0.75rem 0;
  outline: none;
  transition: border-color 0.15s;
}

.form-input:focus { border-bottom-color: var(--primary); }
.form-input::placeholder { color: var(--outline); }

/* ─── Log Output ─── */
.log-output {
  margin-top: 1.5rem;
  font-size: 0.8125rem;
  line-height: 2;
}

.log-line { padding: 0.25rem 0; }
.log-ok { color: var(--primary); }
.log-ok::before { content: '✓ '; }
.log-fail { color: var(--error); }
.log-fail::before { content: '✗ '; }
.log-info { color: var(--on-surface-variant); }
.log-info::before { content: '  '; }
.log-tx { color: var(--outline); font-size: 0.75rem; }
.log-tx::before { content: '  tx '; }

/* ─── Activity Log ─── */
.activity-log {
  font-size: 0.8125rem;
}

.activity-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0;
}

.activity-icon { font-weight: 700; }
.activity-icon.ok { color: var(--primary); }
.activity-icon.fail { color: var(--error); }

/* ─── Data Source Rows ─── */
.data-source-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 0;
  font-size: 0.875rem;
}

.data-source-row .ghost { width: 140px; flex-shrink: 0; }

.mini-bar {
  flex: 1;
  height: 3px;
  background: var(--surface-highest);
}

.mini-bar-fill {
  height: 100%;
  background: var(--primary);
}

/* ─── Credit Source ─── */
.credit-source-name {
  font-size: 0.6875rem;
  color: var(--on-surface-variant);
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.credit-source-value {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

/* ─── Loans List ─── */
.loan-item {
  background: var(--surface-container);
  padding: 1.5rem;
  margin-bottom: 0.75rem;
}

.loan-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.loan-item-amount { font-size: 1.25rem; font-weight: 700; color: var(--primary); }

.loan-item-status {
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.75rem;
  background: var(--surface-highest);
  border-left: 2px solid var(--primary);
  color: var(--primary);
}

.loan-item-status.overdue {
  border-left-color: var(--error);
  color: var(--error);
}

/* ─── Agent Status ─── */
.agent-status-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  font-size: 0.875rem;
}

/* ─── Timeline ─── */
.timeline-item {
  padding: 0.75rem 0;
  padding-left: 1.5rem;
  border-left: 1px solid var(--outline-variant);
  font-size: 0.8125rem;
  position: relative;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -3px;
  top: 1rem;
  width: 5px;
  height: 5px;
  background: var(--primary);
}

.timeline-item.error::before { background: var(--error); }

/* ─── Error Message ─── */
.error-msg {
  color: var(--error);
  font-size: 0.875rem;
  padding: 1rem 0;
}

/* ─── Footer ─── */
footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 4rem 0;
}

footer .ghost {
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
}

.footer-copy {
  font-size: 0.6875rem;
  color: var(--on-surface-variant);
  letter-spacing: 0.2em;
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  main { padding: 100px 1.75rem 4rem; }
  .grid-2 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .section-title { font-size: 2rem; }
  .header-nav { gap: 1rem; }
}