*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --nav-h:       65px;
  --side-nav-w:  240px;
  --space-gutter-x: 8px;
  --space-card-gap: 8px;
  --space-section-gap: 24px;
  --space-card-pad: 12px;
  --space-content-gap: 8px;
  --bg:          #050505;
  --surface-panel: #0c0c0c;
  --surface-panel-alt: #121212;
  --surface-card: #141414;
  --surface-card-alt: #1a1a1a;
  --surface-card-soft: #1f1f1f;
  --border-strong: #2a2a2a;
  --nav-bg:      var(--surface-panel);
  --panel-bg:    var(--surface-panel);
  --dropdown-bg: var(--surface-panel-alt);
  --dropdown-bg-solid: var(--surface-panel-alt);
  --dropdown-border: rgba(255,255,255,0.12);
  --dropdown-shadow: 0 22px 48px rgba(0,0,0,0.52);
  --dropdown-hover: rgba(255,255,255,0.06);
  --dropdown-icon: #a1a1aa;
  --dropdown-tag-bg: rgba(255,255,255,0.05);
  --app-select-caret: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='none'%3E%3Cpath d='M5.25 7.75L10 12.25L14.75 7.75' stroke='%23a1a1aa' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  --surface:     var(--surface-card);
  --border:      var(--border-strong);
  --border-soft: #2b2b2b;
  --accent:      #f5f5f5;
  --accent-bg-soft: rgba(255,255,255,0.08);
  --accent-bg: rgba(255,255,255,0.12);
  --accent-bg-strong: rgba(255,255,255,0.18);
  --accent-border: rgba(255,255,255,0.22);
  --accent-border-strong: rgba(255,255,255,0.32);
  --accent-ring: rgba(255,255,255,0.10);
  --state-info-bg: rgba(255,255,255,0.06);
  --state-info-border: rgba(255,255,255,0.18);
  --state-info-fg: #f5f5f5;
  --state-success-bg: color-mix(in srgb, var(--success) 10%, transparent);
  --state-success-border: color-mix(in srgb, var(--success) 34%, var(--border));
  --state-success-fg: color-mix(in srgb, var(--success) 62%, var(--text));
  --state-warn-bg: color-mix(in srgb, var(--warning) 11%, transparent);
  --state-warn-border: color-mix(in srgb, var(--warning) 36%, var(--border));
  --state-warn-fg: color-mix(in srgb, var(--warning) 62%, var(--text));
  --state-queued-bg: color-mix(in srgb, #c4b5fd 10%, transparent);
  --state-queued-border: color-mix(in srgb, #c4b5fd 34%, var(--border));
  --state-queued-fg: color-mix(in srgb, #c4b5fd 68%, var(--text));
  --state-danger-bg: color-mix(in srgb, var(--danger) 10%, transparent);
  --state-danger-border: color-mix(in srgb, var(--danger) 34%, var(--border));
  --state-danger-fg: color-mix(in srgb, var(--danger) 62%, var(--text));
  --success:     #22c55e;
  --danger:      #ef4444;
  --warning:     #eab308;
  --text:        #f5f5f5;
  --text-sub:    #a1a1aa;
  --text-dim:    #6b7280;
  --radius:      10px;
}

@media (min-width: 400px) {
  :root {
    --space-gutter-x: 12px;
    --space-card-gap: 12px;
    --space-section-gap: 28px;
    --space-card-pad: 12px;
    --space-content-gap: 12px;
  }
}

@media (min-width: 768px) {
  :root {
    --space-gutter-x: 16px;
    --space-card-gap: 16px;
    --space-section-gap: 32px;
    --space-card-pad: 16px;
    --space-content-gap: 12px;
  }
}

@media (min-width: 1200px) {
  :root {
    --space-gutter-x: 20px;
    --space-card-gap: 20px;
    --space-section-gap: 40px;
    --space-card-pad: 20px;
    --space-content-gap: 12px;
  }
}

html[data-theme="light"] {
  --bg:          #f4f6fb;
  --surface-panel: #ffffff;
  --surface-panel-alt: #f8fafc;
  --surface-card: #ffffff;
  --surface-card-alt: #f1f5f9;
  --surface-card-soft: #eef2ff;
  --border-strong: #cbd5e1;
  --nav-bg:      var(--surface-panel);
  --panel-bg:    var(--surface-panel);
  --surface:     var(--surface-card);
  --border:      var(--border-strong);
  --border-soft: #e2e8f0;
  --accent:      #2563eb;
  --accent-bg-soft: color-mix(in srgb, var(--accent) 10%, transparent);
  --accent-bg: color-mix(in srgb, var(--accent) 16%, transparent);
  --accent-bg-strong: color-mix(in srgb, var(--accent) 24%, transparent);
  --accent-border: color-mix(in srgb, var(--accent) 42%, var(--border));
  --accent-border-strong: color-mix(in srgb, var(--accent) 62%, var(--border));
  --accent-ring: color-mix(in srgb, var(--accent) 18%, transparent);
  --state-info-bg: var(--accent-bg-soft);
  --state-info-border: var(--accent-border);
  --state-info-fg: color-mix(in srgb, var(--accent) 70%, var(--text));
  --state-success-bg: color-mix(in srgb, var(--success) 10%, transparent);
  --state-success-border: color-mix(in srgb, var(--success) 34%, var(--border));
  --state-success-fg: color-mix(in srgb, var(--success) 70%, var(--text));
  --state-warn-bg: color-mix(in srgb, var(--warning) 11%, transparent);
  --state-warn-border: color-mix(in srgb, var(--warning) 36%, var(--border));
  --state-warn-fg: color-mix(in srgb, var(--warning) 72%, var(--text));
  --state-queued-bg: color-mix(in srgb, #8b5cf6 10%, transparent);
  --state-queued-border: color-mix(in srgb, #8b5cf6 34%, var(--border));
  --state-queued-fg: color-mix(in srgb, #7c3aed 74%, var(--text));
  --state-danger-bg: color-mix(in srgb, var(--danger) 10%, transparent);
  --state-danger-border: color-mix(in srgb, var(--danger) 34%, var(--border));
  --state-danger-fg: color-mix(in srgb, var(--danger) 76%, var(--text));
  --success:     #16a34a;
  --danger:      #dc2626;
  --warning:     #ca8a04;
  --text:        #0f172a;
  --text-sub:    #475569;
  --text-dim:    #94a3b8;
  --dropdown-bg: var(--surface-panel-alt);
  --dropdown-bg-solid: var(--surface-panel);
  --dropdown-border: rgba(15,23,42,0.14);
  --dropdown-shadow: 0 14px 32px rgba(15,23,42,0.14);
  --dropdown-hover: rgba(37,99,235,0.10);
  --dropdown-icon: #64748b;
  --dropdown-tag-bg: rgba(15,23,42,0.06);
  --app-select-caret: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='none'%3E%3Cpath d='M5.25 7.75L10 12.25L14.75 7.75' stroke='%2364748b' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}

html { font-family: 'Inter', system-ui, sans-serif; font-weight: 400; background: var(--bg); color: var(--text); }
body,
button,
input,
select,
textarea {
  font-family: inherit;
}
body {
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(255,255,255,0.06), transparent 26%),
    radial-gradient(circle at top right, rgba(255,255,255,0.04), transparent 18%),
    linear-gradient(180deg, rgba(255,255,255,0.01), transparent 24%),
    var(--bg);
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-section-gap) var(--space-gutter-x) var(--space-gutter-x);
  display: flex;
  flex-direction: column;
}

.page-title { margin-bottom: var(--space-section-gap); }
.page-title h1 { font-size: 1.5rem; font-weight: 400; letter-spacing: -.03em; margin-bottom: .2rem; }
.page-title p { font-size: .82rem; color: var(--text-sub); }
.page-title-actions {
  margin-top: .9rem;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-content-gap);
}

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-card-gap); margin-bottom: .1rem; }
@media (max-width: 680px) { .grid { grid-template-columns: 1fr; } }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: var(--space-card-pad); }
.card.card-active { border-color: rgba(255,255,255,0.28); }

.card-label { font-size: .75rem; font-weight: 600; text-transform: none; letter-spacing: .02em; color: var(--text-dim); margin-bottom: 1.1rem; }
.card-label span { color: var(--text-sub); font-weight: 400; text-transform: none; letter-spacing: 0; }

.btn { display: inline-block; padding: .62rem .95rem; border: none; border-radius: 8px; font-family: inherit; font-size: .83rem; font-weight: 500; cursor: pointer; transition: opacity .2s, background .2s; letter-spacing: .01em; }
.btn:disabled { opacity: .3; cursor: not-allowed; }
.btn-sm { padding: .32rem .65rem; font-size: .74rem; }
.btn-full { width: 100%; }
.btn-blue  { background: var(--accent); color: #111; }
.btn-blue:not(:disabled):hover { background: #eaeaea; }
.btn-green { background: #16a34a; color: #fff; }
.btn-green:not(:disabled):hover { background: #15803d; }
.btn-red   { background: #b91c1c; color: #fff; }
.btn-red:not(:disabled):hover   { background: #991b1b; }
.btn-row { display: flex; gap: .6rem; }

body.with-side-nav select:not([multiple]):not([size]),
body.with-side-nav select:not([multiple])[size="1"] {
  color-scheme: dark;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  padding-right: 2.1rem;
  background-image: var(--app-select-caret);
  background-repeat: no-repeat;
  background-position: right .65rem center;
  background-size: 16px 16px;
}

html[data-theme="light"] body.with-side-nav select:not([multiple]):not([size]),
html[data-theme="light"] body.with-side-nav select:not([multiple])[size="1"] {
  color-scheme: light;
}

body.with-side-nav select:not([multiple]):not([size])::-ms-expand,
body.with-side-nav select:not([multiple])[size="1"]::-ms-expand {
  display: none;
}

body.with-side-nav select:not([multiple]):not([size])::-moz-focus-inner,
body.with-side-nav select:not([multiple])[size="1"]::-moz-focus-inner {
  border: 0;
}

body.with-side-nav select:not([multiple]):not([size]):-moz-focusring,
body.with-side-nav select:not([multiple])[size="1"]:-moz-focusring {
  color: transparent;
  text-shadow: 0 0 0 var(--text);
}

@supports selector(select::picker) {
  body.with-side-nav select:not([multiple]):not([size]),
  body.with-side-nav select:not([multiple])[size="1"] {
    background-image: none;
  }

  body.with-side-nav select:not([multiple]):not([size])::picker(select),
  body.with-side-nav select:not([multiple])[size="1"]::picker(select) {
    background: var(--dropdown-bg);
    border: 1px solid var(--dropdown-border);
    color: var(--text);
    border-radius: 10px;
    box-shadow: var(--dropdown-shadow);
  }

  body.with-side-nav select:not([multiple]):not([size])::picker-icon,
  body.with-side-nav select:not([multiple])[size="1"]::picker-icon {
    color: var(--dropdown-icon);
  }

  body.with-side-nav select:not([multiple]):not([size]):open,
  body.with-side-nav select:not([multiple])[size="1"]:open {
    background-color: var(--surface-card-soft);
  }
}

@supports selector(option::checkmark) {
  body.with-side-nav select:not([multiple]):not([size]) option::checkmark,
  body.with-side-nav select:not([multiple])[size="1"] option::checkmark {
    color: var(--accent);
  }
}

/* Native number spinners inherit color-scheme, so they repaint with the theme. */
body.with-side-nav input[type="number"] {
  color-scheme: dark;
}

html[data-theme="light"] body.with-side-nav input[type="number"] {
  color-scheme: light;
}

body.with-side-nav input[type="number"]::-webkit-inner-spin-button,
body.with-side-nav input[type="number"]::-webkit-outer-spin-button {
  opacity: 0;
  height: auto;
  margin-left: .35rem;
  border-left: 1px solid var(--border-soft);
  background: var(--surface-card-alt);
  transition: opacity .15s ease, background .15s ease;
}

body.with-side-nav input[type="number"]:hover::-webkit-inner-spin-button,
body.with-side-nav input[type="number"]:hover::-webkit-outer-spin-button,
body.with-side-nav input[type="number"]:focus::-webkit-inner-spin-button,
body.with-side-nav input[type="number"]:focus::-webkit-outer-spin-button {
  opacity: 1;
}

body.with-side-nav input[type="number"]::-webkit-inner-spin-button:hover,
body.with-side-nav input[type="number"]::-webkit-outer-spin-button:hover {
  background: var(--accent-bg-soft);
}

@media (max-width: 980px) {
  main { min-height: calc(100vh - var(--nav-h)); }
}

.stats { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: .6rem; margin-bottom: .6rem; }
.stats-row2 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: .6rem; margin-bottom: 1.1rem; }
.stat { background: rgba(255,255,255,0.02); border: 1px solid var(--border-soft); border-radius: 8px; padding: .8rem .75rem; text-align: center; }
.stat-num { font-size: 1.65rem; font-weight: 400; line-height: 1; margin-bottom: .2rem; letter-spacing: -.02em; }
.stat-lbl { font-size: .65rem; text-transform: none; letter-spacing: .02em; color: var(--text-dim); }
.s-sent      .stat-num { color: var(--success); }
.s-failed    .stat-num { color: var(--danger); }
.s-pending   .stat-num { color: var(--warning); }
.s-scheduled .stat-num { color: #a78bfa; }
.s-clicks    .stat-num { color: #22d3ee; }
.s-rate      .stat-num { color: #fb923c; }

.badge { display: inline-flex; align-items: center; gap: .3rem; font-size: .68rem; font-weight: 500; text-transform: none; letter-spacing: .02em; padding: .18rem .5rem; border-radius: 4px; }
.badge::before { content: ''; width: 4px; height: 4px; border-radius: 50%; flex-shrink: 0; }
.badge-sent      { color: #86efac; background: rgba(34,197,94,0.08); }
.badge-sent::before      { background: var(--success); }
.badge-delivered { color: #67e8f9; background: rgba(6,182,212,0.1); }
.badge-delivered::before { background: #06b6d4; }
.badge-failed    { color: #fca5a5; background: rgba(239,68,68,0.08); }
.badge-failed::before    { background: var(--danger); }
.badge-pending   { color: #fde68a; background: rgba(234,179,8,0.08); }
.badge-pending::before   { background: var(--warning); }
.badge-scheduled { color: #c4b5fd; background: rgba(167,139,250,0.08); }
.badge-scheduled::before { background: #a78bfa; }
.badge-yes { color: #86efac; background: rgba(34,197,94,0.08); }
.badge-yes::before { background: var(--success); }
.badge-no  { color: var(--text-dim); background: rgba(74,85,104,0.15); }
.badge-no::before  { background: var(--text-dim); }
.badge-ready    { color: #fde68a; background: rgba(234,179,8,0.08); }
.badge-ready::before    { background: var(--warning); }
.badge-active   { color: #93c5fd; background: rgba(59,130,246,0.1); }
.badge-active::before   { background: var(--accent); }
.badge-complete { color: #86efac; background: rgba(34,197,94,0.06); }
.badge-complete::before { background: var(--success); }
.badge-queued   { color: #c4b5fd; background: rgba(167,139,250,0.08); }
.badge-queued::before   { background: #a78bfa; }
.badge-paused   { color: #fde68a; background: rgba(234,179,8,0.08); }
.badge-paused::before   { background: var(--warning); }

.panel { display: none; }
.panel.active { display: block; }