/* Inetometr — main page styles
   Tokens: ../tokens.css
   Mobile-first layout; wider screens layered with min-width.
*/

/* ============================================================
   BASE RESET & TYPOGRAPHY
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--semantic-surface-page);
  color: var(--semantic-text-primary);
  font: var(--semantic-text-base) / var(--semantic-leading-normal) var(--semantic-font-ui);
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  line-height: var(--semantic-leading-tight);
  font-weight: var(--semantic-weight-bold);
}

a {
  color: inherit;
  text-decoration: none;
}

/* ============================================================
   HEADER
   ============================================================ */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--semantic-space-4);
  padding: var(--semantic-space-4) var(--semantic-space-6);
  background: var(--semantic-surface-page);
  border-bottom: 1px solid var(--semantic-border-default);
}

.logo {
  font-size: var(--semantic-text-lg);
  font-weight: var(--semantic-weight-bold);
  letter-spacing: .5px;
}

.logo .accent {
  color: var(--semantic-action-primary);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--semantic-space-4);
}

.header-nav .link {
  color: var(--semantic-text-muted);
  font-size: var(--semantic-text-sm);
}

/* ============================================================
   MAIN
   ============================================================ */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--semantic-space-6);
  width: 100%;
}

/* ============================================================
   CARD
   ============================================================ */
.card {
  width: 100%;
  max-width: var(--component-card-max-width);
  background: var(--semantic-surface-card);
  border: var(--component-card-border);
  border-radius: var(--component-card-radius);
  padding: var(--component-card-padding);
  text-align: center;
  box-shadow: var(--semantic-shadow-lg);
}

.card__title {
  font-size: var(--semantic-text-3xl);
  color: var(--semantic-text-primary);
}

.card__sub {
  margin: var(--semantic-space-3) 0 var(--semantic-space-6);
  color: var(--semantic-text-muted);
  font-size: var(--semantic-text-sm);
}

/* ============================================================
   HERO METRIC (the thing that leads)
   ============================================================ */
.hero {
  margin: var(--semantic-space-4) 0 var(--semantic-space-8);
  position: relative;
}

.hero__inner {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: var(--semantic-space-2);
}

.hero__value {
  font-size: var(--component-hero-value-size);
  font-weight: var(--semantic-weight-bold);
  font-family: var(--semantic-font-mono);
  letter-spacing: -.02em;
  line-height: 1;
  min-height: calc(var(--component-hero-value-size) * var(--semantic-leading-tight));
  transition: color var(--semantic-duration-fast) var(--semantic-easing-ease-out);
}

.hero__unit {
  font-size: var(--component-hero-unit-size);
  color: var(--semantic-text-muted);
  font-family: var(--semantic-font-ui);
  font-weight: var(--semantic-weight-medium);
  line-height: 1;
}

.hero__label {
  margin-top: var(--semantic-space-3);
  color: var(--semantic-text-muted);
  font-size: var(--semantic-text-sm);
}

/* Hero values get a subtle emphasis when measured */
.hero__value[data-measured] {
  color: var(--semantic-text-primary);
}

/* Quality badge */
.quality-badge {
  position: absolute;
  top: calc(100% + var(--semantic-space-2));
  left: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--semantic-space-1);
  padding: var(--semantic-space-1) var(--semantic-space-3);
  border-radius: var(--component-btn-radius);
  font-size: var(--semantic-text-xs);
  font-weight: var(--semantic-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--semantic-surface-elevated);
  border: var(--component-card-border);
  color: var(--semantic-text-muted);
  white-space: nowrap;
}

.quality-badge[data-quality="excellent"] {
  background: var(--semantic-feedback-success);
  color: var(--semantic-feedback-success-text, white);
  border-color: var(--semantic-feedback-success);
}

.quality-badge[data-quality="good"] {
  background: var(--semantic-feedback-success);
  color: var(--semantic-feedback-success-text, white);
  border-color: var(--semantic-feedback-success);
}

.quality-badge[data-quality="fair"] {
  background: var(--semantic-feedback-warning);
  color: var(--semantic-feedback-warning-text, #1a1a1a);
  border-color: var(--semantic-feedback-warning);
}

.quality-badge[data-quality="poor"] {
  background: var(--semantic-feedback-error);
  color: var(--semantic-feedback-error-text, white);
  border-color: var(--semantic-feedback-error);
}

/* ============================================================
   METRIC CHIPS (secondary metrics)
   ============================================================ */
.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--component-metric-gap);
  margin: var(--semantic-space-8) 0;
}

.metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--semantic-space-2);
  background: var(--semantic-surface-elevated);
  border: var(--component-card-border);
  border-radius: var(--component-metric-radius);
  padding: var(--component-metric-padding);
  transition: border-color var(--semantic-duration-fast) var(--semantic-easing-ease-out);
}

.metric[data-measured="true"] {
  border-color: var(--semantic-action-primary);
}

.metric__value {
  font-size: var(--component-metric-value-size);
  font-weight: var(--semantic-weight-bold);
  font-family: var(--semantic-font-mono);
  letter-spacing: -.01em;
}

.metric__label {
  color: var(--semantic-text-muted);
  font-size: var(--semantic-text-xs);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--semantic-space-1);
}

.metric__unit {
  font-size: var(--semantic-text-xs);
  color: var(--semantic-text-muted);
  font-weight: var(--semantic-weight-medium);
}

/* Direction indicators (up/down arrows) */
.metric .direction {
  display: inline-flex;
  align-items: center;
  gap: var(--component-direction-gap);
}

/* Metric quality indicator */
.metric__quality {
  font-size: var(--semantic-text-xs);
  font-weight: var(--semantic-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-top: var(--semantic-space-1);
}

.metric__quality--excellent {
  color: var(--semantic-feedback-success);
}

.metric__quality--good {
  color: var(--semantic-feedback-success);
}

.metric__quality--fair {
  color: var(--semantic-feedback-warning);
}

.metric__quality--poor {
  color: var(--semantic-feedback-error);
}

/* ============================================================
   PROGRESS BAR
   ============================================================ */
.progress {
  width: 100%;
  height: var(--component-progress-height);
  background: var(--component-progress-bg);
  border-radius: var(--component-progress-radius);
  overflow: hidden;
  margin: var(--semantic-space-6) 0 var(--semantic-space-6);
}

.progress__fill {
  display: block;
  height: 100%;
  width: 0;
  background: var(--component-progress-fill);
  transition: width var(--semantic-duration-slow) var(--semantic-easing-ease);
}

/* ============================================================
   STATUS (aria-live, status text)
   ============================================================ */
.status {
  min-height: var(--component-status-min-height);
  color: var(--semantic-text-muted);
  font-size: var(--component-status-font-size);
}

.status .phase {
  color: var(--semantic-text-primary);
  font-weight: var(--semantic-weight-medium);
}

.status .result {
  color: var(--semantic-feedback-success);
  font-weight: var(--semantic-weight-semibold);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--semantic-space-2);
  height: var(--component-btn-height);
  padding-inline: var(--component-btn-padding-x);
  border-radius: var(--component-btn-radius);
  border: none;
  background: var(--component-btn-primary-bg);
  color: var(--component-btn-text);
  font-size: var(--component-btn-font-size);
  font-weight: var(--component-btn-font-weight);
  font-family: var(--semantic-font-ui);
  cursor: pointer;
  transition:
    background-color var(--semantic-duration-fast) var(--semantic-easing-ease-out),
    transform var(--semantic-duration-fast) var(--semantic-easing-ease-out);
}

.btn:active {
  transform: scale(.98);
}

.btn:hover:not(:disabled) {
  background: var(--component-btn-primary-hover);
}

.btn:focus-visible {
  outline: var(--component-btn-focus-ring) solid
           max(var(--component-btn-focus-ring-width, 2px), 1px);
  outline-offset: var(--component-btn-focus-offset);
}

.btn:disabled {
  background: var(--component-btn-primary-disabled);
  cursor: wait;
  transform: none;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  padding: var(--semantic-space-4);
  text-align: center;
  color: var(--semantic-text-muted);
  font-size: var(--semantic-text-xs);
  border-top: 1px solid var(--semantic-border-default);
}

.footer a {
  color: var(--semantic-text-muted);
}

.footer a:hover {
  color: var(--semantic-text-primary);
  text-decoration: underline;
}

/* ============================================================
   SMALL SCREENS (mobile base)
   ============================================================ */
@media screen and (max-width: 440px) {
  .card {
    padding: var(--component-card-padding-sm);
  }

  .card__title {
    font-size: var(--semantic-text-2xl);
  }

  .metrics {
    gap: var(--semantic-space-2);
  }

  .metric {
    padding: var(--semantic-space-3);
  }

  .metric__value {
    font-size: var(--semantic-text-xl);
  }

  .hero__value {
    font-size: var(--component-hero-value-min);
    /* fallback for browsers without custom property support:
       font-size: clamp(var(--component-hero-value-min), 22vw, var(--component-hero-value-max));
    */
  }

  .btn {
    width: 100%;
  }
}

/* ============================================================
   UTILITIES
   ============================================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   ADMIN PANEL
   ============================================================ */
.summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(var(--component-admin-card-min-width), 1fr));
  gap: var(--semantic-space-4);
  margin: var(--semantic-space-6) 0;
}

.summary .c {
  background: var(--semantic-surface-elevated);
  border: var(--component-card-border);
  border-radius: var(--component-metric-radius);
  padding: var(--component-metric-padding);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--semantic-space-2);
}

.summary .c .v {
  font-size: var(--semantic-text-2xl);
  font-weight: var(--semantic-weight-bold);
  font-family: var(--semantic-font-mono);
}

.summary .c .l {
  color: var(--semantic-text-muted);
  font-size: var(--semantic-text-xs);
  text-align: center;
}

.admin-table {
  overflow-x: auto;
}

.admin-table table {
  width: 100%;
  border-collapse: collapse;
  background: var(--semantic-surface-elevated);
  border-radius: var(--component-metric-radius);
  overflow: hidden;
}

.admin-table th,
.admin-table td {
  padding: var(--semantic-space-3) var(--semantic-space-4);
  text-align: left;
  font-size: var(--semantic-text-sm);
  border-bottom: 1px solid var(--semantic-border-default);
}

.admin-table th {
  background: var(--semantic-surface-hover);
  color: var(--semantic-text-muted);
  font-weight: var(--semantic-weight-semibold);
}

.admin-table td {
  font-family: var(--semantic-font-mono);
}

.admin-table tbody tr:last-child td {
  border-bottom: none;
}

.admin-table tbody tr:hover {
  background: var(--semantic-surface-hover);
}

/* ============================================================
   EXPERIENCE RATINGS (оценки опыта использования)
   ============================================================ */
.experience-ratings {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--semantic-space-4);
  margin: var(--semantic-space-8) 0;
}

.experience-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--semantic-space-2);
  background: var(--semantic-surface-elevated);
  border: var(--component-card-border);
  border-radius: var(--component-metric-radius);
  padding: var(--component-metric-padding);
}

.experience-card__icon {
  font-size: var(--semantic-text-2xl);
}

.experience-card__title {
  font-size: var(--semantic-text-sm);
  font-weight: var(--semantic-weight-semibold);
  color: var(--semantic-text-primary);
  text-align: center;
}

.experience-card__value {
  font-size: var(--component-metric-value-size);
  font-weight: var(--semantic-weight-bold);
  font-family: var(--semantic-font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.experience-card__value[data-rating="comfortable"] {
  color: var(--semantic-feedback-success);
}

.experience-card__value[data-rating="limited"] {
  color: var(--semantic-feedback-warning);
}

.experience-card__value[data-rating="insufficient"] {
  color: var(--semantic-text-muted);
}

.experience-card__sub {
  font-size: var(--semantic-text-xs);
  color: var(--semantic-text-muted);
  text-align: center;
  line-height: var(--semantic-leading-tight);
}

/* ============================================================
   COMPARISON WITH PREVIOUS RESULT
   ============================================================ */
.comparison {
  margin: var(--semantic-space-6) 0 var(--semantic-space-4);
  padding: var(--semantic-space-4) var(--semantic-space-5);
  background: var(--semantic-surface-elevated);
  border: var(--component-card-border);
  border-radius: var(--component-metric-radius);
}

.comparison__header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--semantic-space-3);
}

.comparison__title {
  font-size: var(--semantic-text-sm);
  font-weight: var(--semantic-weight-semibold);
  color: var(--semantic-text-primary);
}

.comparison__time {
  font-size: var(--semantic-text-xs);
  color: var(--semantic-text-muted);
}

.comparison__row {
  display: flex;
  flex-direction: column;
  gap: var(--semantic-space-2);
}

.comparison__empty {
  font-size: var(--semantic-text-xs);
  color: var(--semantic-text-muted);
  font-style: italic;
}

.comparison__item {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 0.8fr;
  align-items: center;
  gap: var(--semantic-space-2);
  font-size: var(--semantic-text-sm);
}

.comparison__item .comparison__label {
  color: var(--semantic-text-secondary);
  font-size: var(--semantic-text-xs);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.comparison__item .comparison__prev {
  font-family: var(--semantic-font-mono);
  color: var(--semantic-text-muted);
}

.comparison__item .comparison__delta {
  font-family: var(--semantic-font-mono);
  font-weight: var(--semantic-weight-semibold);
  font-size: var(--semantic-text-sm);
}

.comparison__item .comparison__arrow {
  font-size: var(--semantic-text-xs);
  color: var(--semantic-text-muted);
}

.comparison__item[data-trend="improved"] .comparison__delta {
  color: var(--semantic-feedback-success);
}

.comparison__item[data-trend="worse"] .comparison__delta {
  color: var(--semantic-feedback-error);
}

.comparison__item[data-trend="same"] .comparison__delta {
  color: var(--semantic-text-muted);
}

@media screen and (max-width: 440px) {
  .comparison__item {
    grid-template-columns: 1fr 1fr;
    gap: var(--semantic-space-1);
  }
  .comparison__item .comparison__label {
    grid-column: 1 / -1;
  }
}

/* ============================================================
   TRACEROUTE TABLE
   ============================================================ */
.traceroute-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--semantic-surface-elevated);
  border-radius: var(--component-metric-radius);
  overflow: hidden;
}

.traceroute-table th,
.traceroute-table td {
  padding: var(--semantic-space-3) var(--semantic-space-4);
  text-align: left;
  font-size: var(--semantic-text-sm);
  border-bottom: 1px solid var(--semantic-border-default);
}

.traceroute-table th {
  background: var(--semantic-surface-hover);
  color: var(--semantic-text-muted);
  font-weight: var(--semantic-weight-semibold);
}

.traceroute-table td {
  font-family: var(--semantic-font-mono);
}

.traceroute-table tbody tr:last-child td {
  border-bottom: none;
}

.traceroute-table tbody tr:hover {
  background: var(--semantic-surface-hover);
}

/* Loss percent styling */
.traceroute-table td[data-loss-high] {
  color: var(--semantic-feedback-error);
  font-weight: var(--semantic-weight-semibold);
}

.traceroute-table td[data-loss-medium] {
  color: var(--semantic-feedback-warning);
  font-weight: var(--semantic-weight-medium);
}

.traceroute-table td[data-loss-low] {
  color: var(--semantic-feedback-success);
  font-weight: var(--semantic-weight-medium);
}

/* RTT styling - highlight variations */
.traceroute-table td[data-rtt-variable] {
  font-family: var(--semantic-font-mono);
}

/* Empty cell styling */
.traceroute-table td.empty-cell {
  color: var(--semantic-text-muted);
  font-style: italic;
}