:root {
  --navy: #071a33;
  --navy-soft: #102c4f;
  --blue: #1457a6;
  --blue-light: #e9f2fc;
  --red: #d71920;
  --green: #17884b;
  --white: #ffffff;
  --background: #f4f7fb;
  --surface: rgba(255, 255, 255, 0.94);
  --text: #162338;
  --muted: #66758b;
  --border: #dce4ee;
  --shadow: 0 20px 50px rgba(7, 26, 51, 0.12);
  --radius-large: 28px;
  --radius-medium: 18px;
  --radius-small: 12px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--background);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(
      circle at top right,
      rgba(20, 87, 166, 0.13),
      transparent 32rem
    ),
    linear-gradient(
      180deg,
      #eef4fb 0,
      #f7f9fc 42%,
      #ffffff 100%
    );
  font-family:
    Inter,
    "Segoe UI",
    Arial,
    sans-serif;
}

button,
a {
  font: inherit;
}

.background-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.35;
  background-image:
    linear-gradient(
      rgba(7, 26, 51, 0.04) 1px,
      transparent 1px
    ),
    linear-gradient(
      90deg,
      rgba(7, 26, 51, 0.04) 1px,
      transparent 1px
    );
  background-size: 32px 32px;
  mask-image:
    linear-gradient(
      to bottom,
      black,
      transparent 75%
    );
}

.site-header {
  border-bottom: 1px solid rgba(220, 228, 238, 0.9);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px);
}

.header-inner {
  width: min(1180px, calc(100% - 40px));
  min-height: 92px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.brand-mark {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 15px;
  color: var(--white);
  background:
    linear-gradient(
      135deg,
      var(--navy),
      var(--blue)
    );
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.04em;
  box-shadow: 0 12px 24px rgba(7, 26, 51, 0.2);
}

.brand-overline,
.brand-title,
.hero h2,
.hero-description,
.panel-label,
.hero-panel h3,
.feature-card h3,
.feature-card p,
.section-label,
.technical-status h2,
.site-footer span,
.error-card h1,
.error-card p {
  margin: 0;
}

.brand-overline {
  margin-bottom: 4px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.brand-title {
  color: var(--navy);
  font-size: clamp(18px, 2.4vw, 25px);
  line-height: 1.1;
}

.system-status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  background: var(--white);
  font-size: 13px;
  font-weight: 700;
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #d49b19;
  box-shadow: 0 0 0 5px rgba(212, 155, 25, 0.12);
}

.system-status.is-online {
  color: var(--green);
  border-color: rgba(23, 136, 75, 0.25);
  background: rgba(23, 136, 75, 0.06);
}

.system-status.is-online .status-dot {
  background: var(--green);
  box-shadow: 0 0 0 5px rgba(23, 136, 75, 0.12);
}

.system-status.is-offline {
  color: var(--red);
  border-color: rgba(215, 25, 32, 0.25);
  background: rgba(215, 25, 32, 0.06);
}

.system-status.is-offline .status-dot {
  background: var(--red);
  box-shadow: 0 0 0 5px rgba(215, 25, 32, 0.12);
}

.page {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 68px 0 44px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.28fr) minmax(340px, 0.72fr);
  align-items: center;
  gap: 52px;
}

.eyebrow,
.section-label {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--red);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.hero h2 {
  max-width: 760px;
  color: var(--navy);
  font-size: clamp(42px, 6vw, 72px);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.hero-description {
  max-width: 680px;
  margin-top: 26px;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.65;
}

.hero-actions {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-height: 48px;
  padding: 0 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: var(--radius-small);
  text-decoration: none;
  font-weight: 800;
  cursor: pointer;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    opacity 160ms ease;
}

.button:not(:disabled):hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--white);
  background:
    linear-gradient(
      135deg,
      var(--navy),
      var(--blue)
    );
  box-shadow: 0 12px 22px rgba(7, 26, 51, 0.18);
}

.button-secondary {
  color: var(--navy);
  border: 1px solid var(--border);
  background: var(--white);
}

.button:disabled {
  opacity: 0.52;
  cursor: not-allowed;
}

.development-notice {
  max-width: 620px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.hero-panel {
  padding: 28px;
  border: 1px solid rgba(220, 228, 238, 0.95);
  border-radius: var(--radius-large);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.panel-heading {
  padding-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 14px;
  border-bottom: 1px solid var(--border);
}

.panel-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 14px;
  color: var(--white);
  background: var(--green);
  font-size: 21px;
  font-weight: 900;
}

.panel-label {
  margin-bottom: 5px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-panel h3 {
  color: var(--navy);
  font-size: 20px;
}

.check-list {
  padding-top: 10px;
}

.check-item {
  padding: 15px 0;
  display: flex;
  align-items: flex-start;
  gap: 13px;
  border-bottom: 1px solid rgba(220, 228, 238, 0.8);
}

.check-item:last-child {
  border-bottom: 0;
}

.check-symbol {
  width: 25px;
  height: 25px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 8px;
  color: var(--blue);
  background: var(--blue-light);
  font-size: 13px;
  font-weight: 900;
}

.check-item strong,
.check-item span {
  display: block;
}

.check-item strong {
  color: var(--navy);
  font-size: 14px;
}

.check-item div > span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.features {
  margin-top: 76px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature-card {
  min-height: 220px;
  padding: 25px;
  border: 1px solid var(--border);
  border-radius: var(--radius-medium);
  background: rgba(255, 255, 255, 0.88);
}

.feature-number {
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.1em;
}

.feature-card h3 {
  margin-top: 34px;
  color: var(--navy);
  font-size: 21px;
}

.feature-card p {
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.technical-status {
  margin-top: 20px;
  padding: 27px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-medium);
  color: var(--white);
  background:
    linear-gradient(
      135deg,
      var(--navy),
      var(--navy-soft)
    );
  box-shadow: 0 18px 36px rgba(7, 26, 51, 0.14);
}

.technical-status .section-label {
  margin-bottom: 7px;
  color: #7db5ef;
}

.technical-status h2 {
  font-size: 22px;
}

.api-result {
  min-width: 260px;
  padding: 13px 16px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.45;
}

.api-result.is-success {
  color: #a4efbf;
}

.api-result.is-error {
  color: #ffb6ba;
}

.site-footer {
  width: min(1180px, calc(100% - 40px));
  min-height: 78px;
  margin: 0 auto;
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
}

.error-page {
  display: grid;
  place-items: center;
  padding: 24px;
}

.error-card {
  width: min(520px, 100%);
  padding: 42px;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-large);
  background: var(--white);
  box-shadow: var(--shadow);
}

.error-code {
  color: var(--red);
  font-size: 60px;
  font-weight: 900;
  letter-spacing: -0.05em;
}

.error-card h1 {
  margin-top: 8px;
  color: var(--navy);
}

.error-card p {
  margin: 14px 0 25px;
  color: var(--muted);
  line-height: 1.6;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .features {
    grid-template-columns: 1fr;
  }

  .technical-status {
    align-items: stretch;
    flex-direction: column;
  }

  .api-result {
    min-width: 0;
  }
}

@media (max-width: 640px) {
  .header-inner {
    width: min(100% - 28px, 1180px);
    padding: 15px 0;
    align-items: flex-start;
    flex-direction: column;
  }

  .page,
  .site-footer {
    width: min(100% - 28px, 1180px);
  }

  .page {
    padding-top: 45px;
  }

  .hero h2 {
    font-size: 43px;
  }

  .hero-panel {
    padding: 22px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px;
}

.login-layout {
  width: min(1050px, 100%);
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 54px;
  align-items: center;
}

.login-intro h1 {
  max-width: 680px;
  margin: 0;
  color: var(--navy);
  font-size: clamp(42px, 6vw, 72px);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.login-intro p {
  max-width: 620px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}

.login-back {
  display: inline-block;
  margin-bottom: 50px;
  color: var(--blue);
  text-decoration: none;
  font-size: 14px;
  font-weight: 800;
}

.login-card {
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-large);
  background: var(--white);
  box-shadow: var(--shadow);
}

.login-card-heading {
  margin-bottom: 30px;
  padding-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 15px;
  border-bottom: 1px solid var(--border);
}

.login-card-heading h2 {
  margin: 0;
  color: var(--navy);
}

.form-field {
  margin-bottom: 20px;
}

.form-field label {
  display: block;
  margin-bottom: 8px;
  color: var(--navy);
  font-size: 13px;
  font-weight: 800;
}

.form-field input {
  width: 100%;
  min-height: 50px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  outline: none;
  color: var(--text);
  background: var(--white);
  font: inherit;
}

.form-field input:focus {
  border-color: var(--blue);
  box-shadow:
    0 0 0 4px
    rgba(20, 87, 166, 0.1);
}

.login-button {
  width: 100%;
  margin-top: 6px;
}

.login-message {
  margin-bottom: 18px;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.45;
}

.login-message.is-error {
  color: #9e151b;
  background: rgba(215, 25, 32, 0.09);
}

.login-message.is-success {
  color: #116b3b;
  background: rgba(23, 136, 75, 0.09);
}

@media (max-width: 820px) {
  .login-layout {
    grid-template-columns: 1fr;
  }

  .login-intro h1 {
    font-size: 46px;
  }

  .login-back {
    margin-bottom: 30px;
  }
}

.button.is-disabled,
.button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
  filter: grayscale(1);
}