:root {
  --ink: #101317;
  --muted: #5d6673;
  --line: #dde3ea;
  --paper: #f7f9fb;
  --white: #ffffff;
  --blue: #2457ff;
  --teal: #008c8c;
  --shadow: 0 20px 55px rgba(16, 19, 23, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Pretendard, "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", Arial, sans-serif;
  line-height: 1.6;
}

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

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--blue), var(--teal));
  color: var(--white);
  font-size: 14px;
  font-weight: 900;
}

.auth-page {
  min-height: 100vh;
  background:
    linear-gradient(90deg, rgba(7, 9, 13, 0.86), rgba(7, 9, 13, 0.44)),
    url("../assets/station2-hero.png") center / cover no-repeat;
}

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

.auth-card {
  width: min(420px, 100%);
  padding: 32px;
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.brand-lockup {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-bottom: 28px;
}

.brand-lockup p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
}

.brand-lockup h1 {
  margin: 2px 0 0;
  font-size: 26px;
  line-height: 1.15;
}

.auth-form {
  display: grid;
  gap: 16px;
}

.auth-form label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.auth-form input {
  width: 100%;
  min-height: 48px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  font: inherit;
}

.auth-form input:focus {
  outline: 2px solid rgba(36, 87, 255, 0.22);
  border-color: var(--blue);
}

.auth-form button {
  min-height: 48px;
  border: 0;
  border-radius: 8px;
  color: var(--white);
  background: var(--ink);
  font: inherit;
  font-weight: 900;
  cursor: pointer;
}

.form-error {
  margin: 0 0 16px;
  padding: 11px 12px;
  border-radius: 8px;
  color: #9f1d1d;
  background: #fff0f0;
  font-size: 14px;
  font-weight: 800;
}

.admin-header {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 max(16px, calc((100vw - 1180px) / 2));
  color: var(--white);
  background: var(--ink);
}

.admin-brand,
.admin-header nav {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
}

.admin-header nav {
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.admin-header nav a {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  border-radius: 8px;
  color: var(--ink);
  background: var(--white);
}

.admin-main {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0;
}

.admin-panel {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 12px 30px rgba(16, 19, 23, 0.05);
}

.kicker {
  margin: 0 0 8px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.admin-panel h1 {
  margin: 0;
  font-size: 34px;
}

.admin-panel p:last-child {
  max-width: 720px;
  margin: 12px 0 0;
  color: var(--muted);
}

@media (max-width: 640px) {
  .admin-header {
    align-items: flex-start;
    flex-direction: column;
    padding-top: 16px;
    padding-bottom: 16px;
  }

  .auth-card {
    padding: 24px;
  }
}