/* ── Reset & Base (adapted from sevasek.com) ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --accent:      #4F46E5;
  --accent-dark: #3730A3;
  --accent-bg:   #EEF2FF;
  --success:     #10B981;

  --dark:   #09090B;
  --mid:    #52525B;
  --muted:  #A1A1AA;
  --light:  #F4F4F5;
  --white:  #FAFAFA;
  --border: #E4E4E7;

  --radius: 16px;
}

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--dark);
  background: var(--white);
  line-height: 1.6;
  font-size: 16px;
}

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.narrow    { max-width: 680px; margin: 0 auto; }

/* ── Navigation (sticky, blurred like sevasek) ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.logo {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  color: var(--dark);
  text-decoration: none;
}
.nav-toggle {
  display: none;
}
.nav-hamburger {
  display: none;
  width: 40px;
  height: 40px;
  padding: 0;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: 8px;
}
.nav-hamburger-bars {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 18px;
  height: 14px;
}
.nav-hamburger-bars span {
  display: block;
  height: 2px;
  background: var(--dark);
  border-radius: 1px;
  transition: transform 0.15s, opacity 0.15s;
}
.nav-toggle:focus-visible + .nav-hamburger {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.nav-toggle:checked + .nav-hamburger .nav-hamburger-bars span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle:checked + .nav-hamburger .nav-hamburger-bars span:nth-child(2) {
  opacity: 0;
}
.nav-toggle:checked + .nav-hamburger .nav-hamburger-bars span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}
.nav-links {
  display: flex;
  gap: 24px;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--mid);
  text-decoration: none;
}
.nav-links a:hover { color: var(--dark); }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ── Buttons (exact from sevasek) ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  font-family: inherit;
  line-height: 1.25;
  text-decoration: none;
  cursor: pointer;
  /* 1px on every variant so a `.btn-secondary` border doesn't change height
     vs a borderless `<button class="btn">` (Edit vs Delete on Sends). */
  border: 1px solid transparent;
  transition: opacity 0.15s, transform 0.15s;
  text-align: center;
  appearance: none;
  -webkit-appearance: none;
}
.btn:hover { opacity: 0.88; transform: translateY(-1px); }
.btn-sm { padding: 8px 18px; font-size: 0.875rem; background: var(--dark); color: #fff; }
.btn-primary { background: var(--accent); color: #fff; font-size: 1rem; }
.btn-primary:hover { background: var(--accent-dark); opacity: 1; }
.btn-secondary {
  background: var(--white);
  color: var(--dark);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--light); }

/* ── Typography & Eyebrows ── */
.eyebrow {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}
h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}
p { color: var(--mid); }
.muted { color: var(--muted); font-size: 0.92rem; }

/* ── Cards (sevasek style) ── */
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  padding: 28px 32px;
  margin-bottom: 24px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.02);
}
.card:hover { box-shadow: 0 8px 32px rgba(0,0,0,0.06); }
.card-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; }

/* ── Forms ── */
.form-group { margin-bottom: 20px; }
label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
}
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="datetime-local"],
textarea,
select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  background: var(--white);
  color: var(--dark);
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}
textarea { min-height: 160px; resize: vertical; }

.form-check {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  margin-bottom: 0;
}
.form-check input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  flex-shrink: 0;
  cursor: pointer;
}

/* ── Status / Messages ── */
.alert {
  padding: 16px 20px;
  border-radius: 10px;
  margin-bottom: 24px;
  font-size: 0.95rem;
}
.alert-success {
  background: #ECFDF5;
  border: 1px solid #A7F3D0;
  color: #059669;
}
.alert-error {
  background: #FEF2F2;
  border: 1px solid #FECACA;
  color: #DC2626;
}

/* ── Tables (for management) ── */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
}
th, td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
th {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--light);
}
tr:hover { background: var(--light); }

/* ── Page Layouts ── */
.page-header {
  padding: 72px 0 48px;
  border-bottom: 1px solid var(--border);
}
.page-header h1 { margin-bottom: 8px; }
.page-header p { font-size: 1.05rem; max-width: 520px; }

.section { padding: 48px 0; }

.hero {
  padding: 80px 0 60px;
  background: linear-gradient(160deg, var(--white) 55%, var(--accent-bg) 100%);
}

/* ── Unsubscribe / Landing specifics ── */
.unsubscribe-form { max-width: 520px; }
.reason-options {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}
.reason-options label {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
}
.reason-options input { margin: 0; }

/* ── Compose page ── */
.compose-preview {
  background: var(--light);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  margin-top: 24px;
  font-family: monospace;
  white-space: pre-wrap;
  font-size: 0.9rem;
  color: var(--dark);
}

/* ── Footer ── */
footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 80px;
}

/* ── Admin subnav ── */
.admin-subnav {
  background: var(--white);
  border-bottom: 1px solid var(--border);
}
.admin-subnav-inner {
  display: flex;
  align-items: center;
  min-height: 44px;
  gap: 0;
}
.admin-subnav-list {
  padding: 0 20px 0 0;
  margin-right: 4px;
  border-right: 1px solid var(--border);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--dark);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 220px;
  flex-shrink: 0;
}
.admin-list-switcher {
  width: auto;
  padding: 6px 8px;
  font-size: 0.875rem;
  border: none;
  background: transparent;
  font-weight: 600;
  cursor: pointer;
  color: var(--dark);
  max-width: 200px;
  outline: none;
}
.admin-list-switcher:focus { outline: 2px solid var(--accent); border-radius: 4px; }
.admin-list-name {
  font-size: 0.875rem;
  font-weight: 600;
}
.admin-nav-menu {
  display: flex;
  flex: 1;
  min-width: 0;
}
.admin-nav-toggle,
.admin-nav-summary {
  display: none;
}
.admin-subnav-tabs {
  display: flex;
  align-items: stretch;
  flex: 1;
  overflow-x: auto;
  scrollbar-width: none;
}
.admin-subnav-tabs::-webkit-scrollbar { display: none; }
.admin-tab {
  display: inline-flex;
  align-items: center;
  padding: 0 16px;
  height: 44px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--mid);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: color 0.15s;
  flex-shrink: 0;
}
.admin-tab:hover { color: var(--dark); opacity: 1; transform: none; }
.admin-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

/* Admin layout helpers — wrap on phones without changing desktop. */
.table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.table-responsive table {
  margin-top: 0;
  min-width: 36rem;
}
.split {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
}
.split.middle { align-items: center; }
.split > :first-child {
  min-width: 0;
  flex: 1 1 12rem;
}
.cluster {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
  flex-wrap: wrap;
  align-items: center;
}
.stat-row {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}
.truncate {
  display: block;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Responsive */
@media (max-width: 600px) {
  .container { padding: 0 16px; }
  .card { padding: 20px; }
  .nav-links { gap: 16px; }
  .admin-subnav-list { max-width: 140px; }
  .admin-tab { padding: 0 10px; font-size: 0.8rem; }
}

@media (max-width: 480px) {
  .container { padding: 0 14px; }
  .card { padding: 16px; }
  .stat-row { gap: 16px; }
  .stat-row > div { flex: 1 1 40%; }
  .admin-subnav-inner { flex-wrap: wrap; }
  .admin-subnav-list {
    max-width: none;
    width: 100%;
    border-right: none;
    padding: 8px 0 0;
  }
  .admin-subnav-tabs { width: 100%; }
  .admin-list-switcher { max-width: 100%; }
}

@media (max-width: 360px) {
  nav { padding: 10px 0; }
  .container { padding: 0 12px; }
  .card { padding: 14px; }
  .nav-hamburger { display: flex; }
  .nav-toggle {
    display: block;
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }
  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 0;
  }
  .nav-toggle:checked ~ .nav-links {
    display: flex;
  }
  .nav-links a {
    padding: 12px 0;
    border-top: 1px solid var(--border);
  }
  .admin-nav-menu {
    display: block;
    width: 100%;
    flex: none;
    padding: 0 0 8px;
  }
  .admin-nav-toggle {
    display: block;
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }
  .admin-nav-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 10px 0;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent);
    cursor: pointer;
  }
  .admin-nav-toggle:focus-visible + .admin-nav-summary {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }
  .admin-nav-summary::after {
    content: "";
    width: 7px;
    height: 7px;
    border-right: 2px solid var(--mid);
    border-bottom: 2px solid var(--mid);
    transform: rotate(45deg);
    margin-right: 6px;
  }
  .admin-nav-toggle:checked + .admin-nav-summary::after {
    transform: rotate(-135deg);
    margin-top: 4px;
  }
  .admin-nav-toggle:not(:checked) ~ .admin-subnav-tabs {
    display: none;
  }
  .admin-nav-toggle:checked ~ .admin-subnav-tabs {
    display: flex;
    flex-direction: column;
    overflow: visible;
    width: 100%;
  }
  .admin-tab {
    width: 100%;
    height: 40px;
    padding: 0 8px;
    border-bottom: 1px solid var(--border);
    border-left: 2px solid transparent;
  }
  .admin-tab.active {
    border-bottom-color: var(--border);
    border-left-color: var(--accent);
  }
}