* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  font-family: Inter, 'Segoe UI', Arial, sans-serif;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(88, 118, 255, 0.28), transparent 70%),
    radial-gradient(700px 420px at 10% 15%, rgba(138, 93, 255, 0.2), transparent 70%),
    #070b1a;
  color: #eef3ff;
}

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

.container {
  width: 92%;
  max-width: 1180px;
  margin: 0 auto;
}

.topnav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(6, 10, 24, 0.7);
  border-bottom: 1px solid rgba(129, 157, 255, 0.2);
  backdrop-filter: blur(12px);
}

.topnav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
}

.brand {
  font-weight: 800;
  font-size: 26px;
  letter-spacing: 0.3px;
  color: #f4f7ff;
}

.menu {
  display: flex;
  gap: 10px;
  align-items: center;
}

.btn {
  border: 1px solid rgba(144, 165, 255, 0.34);
  background: linear-gradient(135deg, #6f7dff, #8e5dff);
  color: #fff;
  padding: 10px 16px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(91, 109, 255, 0.35);
}

.btn.secondary {
  background: rgba(15, 23, 52, 0.82);
  color: #c2d0ff;
  border-color: rgba(129, 157, 255, 0.35);
}

.hero {
  padding: 96px 0 64px;
}

.hero .container {
  background: linear-gradient(130deg, rgba(34, 52, 120, 0.55), rgba(18, 28, 66, 0.38));
  border: 1px solid rgba(129, 157, 255, 0.25);
  border-radius: 24px;
  padding: 42px;
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.45);
}

.hero h1 {
  font-size: clamp(34px, 5vw, 62px);
  line-height: 1.08;
  margin: 0 0 16px;
  max-width: 900px;
}

.hero p {
  color: #a6b6e8;
  max-width: 820px;
  font-size: 18px;
  line-height: 1.6;
}

.grid {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.grid-3 > * {
  flex: 1 1 280px;
}

.section {
  padding: 26px 0;
}

.card {
  background: rgba(18, 27, 63, 0.72);
  border: 1px solid rgba(129, 157, 255, 0.25);
  border-radius: 18px;
  padding: 22px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.card h3 {
  margin: 0 0 14px;
  font-size: 30px;
}

.muted {
  color: #a6b6e8;
}

.price {
  font-weight: 900;
  font-size: 30px;
  color: #b9c8ff;
}

.tag {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(48, 74, 160, 0.35);
  color: #c9d5ff;
  border: 1px solid rgba(116, 148, 255, 0.45);
  font-size: 12px;
  font-weight: 600;
}

.tag.green {
  background: rgba(24, 88, 64, 0.38);
  border-color: rgba(67, 219, 159, 0.45);
  color: #b5ffe2;
}

.tag.red {
  background: rgba(94, 35, 53, 0.4);
  border-color: rgba(255, 120, 160, 0.5);
  color: #ffd0de;
}

.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 460px;
}

.form {
  display: grid;
  gap: 10px;
}

.input,
select {
  width: 100%;
  padding: 12px 13px;
  border-radius: 12px;
  border: 1px solid rgba(129, 157, 255, 0.38);
  background: rgba(8, 14, 34, 0.85);
  color: #eef3ff;
  outline: none;
}

.input:focus,
select:focus {
  border-color: #8ea8ff;
  box-shadow: 0 0 0 3px rgba(126, 150, 255, 0.2);
}

.dashboard {
  padding: 28px 0 60px;
}

.dashboard-layout {
  display: flex;
  gap: 16px;
  padding: 28px 0 60px;
}

.sidebar {
  width: 250px;
  min-width: 250px;
  height: fit-content;
  position: sticky;
  top: 82px;
}

.side-btn {
  display: block;
  padding: 11px 12px;
  margin-bottom: 8px;
  border-radius: 10px;
  border: 1px solid rgba(129, 157, 255, 0.28);
  background: rgba(10, 18, 44, 0.8);
  color: #c5d2ff;
  font-weight: 700;
}

.side-btn.active {
  background: linear-gradient(135deg, #4b67df, #845af5);
  border-color: rgba(152, 173, 255, 0.6);
  color: #fff;
}

.content-area {
  min-width: 0;
  flex: 1;
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: 10px;
  border-bottom: 1px solid rgba(129, 157, 255, 0.2);
  text-align: left;
  font-size: 14px;
  vertical-align: top;
}

.flash {
  padding: 11px 12px;
  border-radius: 12px;
  margin-bottom: 12px;
}

.flash.ok {
  background: rgba(29, 112, 79, 0.26);
  border: 1px solid rgba(84, 216, 165, 0.5);
  color: #bff8e0;
}

.flash.err {
  background: rgba(110, 35, 56, 0.3);
  border: 1px solid rgba(255, 120, 160, 0.5);
  color: #ffd2df;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.small {
  font-size: 12px;
  color: #9eb0e6;
}

h1,
h2,
h3 {
  color: #eef3ff;
}

@media (max-width: 900px) {
  .dashboard-layout {
    flex-direction: column;
  }

  .sidebar {
    position: static;
    width: 100%;
    min-width: 0;
  }

  .hero .container {
    padding: 28px;
  }
}