/* ============================================================
   MoodPathways — base.css
   Global design tokens, reset, typography, utilities
   ============================================================ */

/* ── Design Tokens ─────────────────────────────────────────── */
:root {
  /* Palette – deep indigo-teal / soft sage */
  --clr-bg:          #F0F4F8;
  --clr-surface:     #FFFFFF;
  --clr-surface-alt: #E8EFF6;
  --clr-border:      #D0DCE8;

  --clr-ink:         #0D1B2A;
  --clr-ink-soft:    #4A6070;
  --clr-ink-muted:   #7A96A8;

  --clr-primary:     #1A5F7A;
  --clr-primary-d:   #0F3D52;
  --clr-primary-l:   #C8DFE8;
  --clr-primary-xl:  #EAF3F7;

  --clr-accent:      #2E9E88;
  --clr-accent-d:    #1D7A68;
  --clr-accent-l:    #C3EAE2;

  --clr-danger:      #C84B31;
  --clr-warn:        #B07D1A;
  --clr-success:     #277A4E;

  /* Severity spectrum */
  --clr-low:         #277A4E;
  --clr-mild:        #5D8A2A;
  --clr-moderate:    #A07020;
  --clr-elevated:    #B05030;
  --clr-high:        #8A3060;

  /* Focus ring */
  --clr-focus:       #1A5F7A;

  /* Typography */
  --font-sans:    "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-serif:   "Lora", "Georgia", "Times New Roman", serif;
  --font-mono:    "JetBrains Mono", "Fira Code", ui-monospace, monospace;

  /* Sizing */
  --radius-sm:    6px;
  --radius:       12px;
  --radius-lg:    20px;
  --radius-xl:    28px;
  --radius-full:  9999px;

  --shadow-sm:    0 1px 4px rgba(13,27,42,.06), 0 0 1px rgba(13,27,42,.04);
  --shadow:       0 4px 16px rgba(13,27,42,.10), 0 1px 4px rgba(13,27,42,.06);
  --shadow-lg:    0 12px 40px rgba(13,27,42,.14), 0 4px 12px rgba(13,27,42,.08);

  --measure:      68ch;
  --wrap-width:   1180px;

  /* Transitions */
  --ease-out:     cubic-bezier(.22,.68,0,1.2);
  --transition:   .18s var(--ease-out);
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --clr-bg:          #0A1520;
    --clr-surface:     #111F2D;
    --clr-surface-alt: #162230;
    --clr-border:      #213040;

    --clr-ink:         #E8F0F5;
    --clr-ink-soft:    #8AAABB;
    --clr-ink-muted:   #4A6878;

    --clr-primary:     #4A9FBF;
    --clr-primary-d:   #6ABDD8;
    --clr-primary-l:   #102838;
    --clr-primary-xl:  #0A1E2A;

    --clr-accent:      #3DC0A5;
    --clr-accent-d:    #5AD5BB;
    --clr-accent-l:    #0A2820;

    --clr-danger:      #E86B50;
    --clr-warn:        #D4A040;
    --clr-success:     #4AA870;

    --clr-low:         #4AA870;
    --clr-mild:        #84B844;
    --clr-moderate:    #D4A040;
    --clr-elevated:    #D87050;
    --clr-high:        #C06090;

    --shadow-sm:       0 1px 4px rgba(0,0,0,.25);
    --shadow:          0 4px 16px rgba(0,0,0,.35);
    --shadow-lg:       0 12px 40px rgba(0,0,0,.45);
  }
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
img, video, svg { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; }
a { color: inherit; }

/* ── Base ───────────────────────────────────────────────────── */
body {
  background: var(--clr-bg);
  color: var(--clr-ink);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; }

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.2;
  color: var(--clr-ink);
}
h1 { font-size: clamp(2rem, 1.4rem + 2.4vw, 3.2rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.4rem, 1.1rem + 1vw, 1.9rem); letter-spacing: -.01em; }
h3 { font-size: 1.2rem; letter-spacing: -.005em; }
h4 { font-size: 1rem; font-family: var(--font-sans); font-weight: 600; }

p { margin-bottom: 1em; }
p:last-child { margin-bottom: 0; }

:focus-visible {
  outline: 2.5px solid var(--clr-focus);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ── Layout helpers ─────────────────────────────────────────── */
.wrap {
  width: min(var(--wrap-width), 100% - 2.5rem);
  margin-inline: auto;
}
.wrap-narrow {
  width: min(36rem, 100% - 2.5rem);
  margin-inline: auto;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 1rem;
  background: var(--clr-primary);
  color: #fff;
  padding: .6rem 1.2rem;
  border-radius: var(--radius);
  font-weight: 600;
  z-index: 200;
  text-decoration: none;
}
.skip-link:focus { left: 1rem; }

/* ── Utilities ──────────────────────────────────────────────── */
.text-muted  { color: var(--clr-ink-soft); }
.text-small  { font-size: .875rem; }
.text-fine   { font-size: .82rem; color: var(--clr-ink-muted); }
.text-center { text-align: center; }
.inline      { display: inline; }
.flex        { display: flex; }
.grid        { display: grid; }
.stack       { display: grid; gap: 1rem; }
.cluster     { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  min-height: 46px;
  padding: .6rem 1.4rem;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--clr-primary);
  background: transparent;
  color: var(--clr-primary);
  font-family: var(--font-sans);
  font-size: .95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}
.btn:hover {
  background: var(--clr-primary-xl);
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 4px var(--clr-primary-l);
}
.btn-primary {
  background: var(--clr-primary);
  color: #fff;
  border-color: var(--clr-primary);
}
.btn-primary:hover {
  background: var(--clr-primary-d);
  border-color: var(--clr-primary-d);
  color: #fff;
  box-shadow: 0 4px 16px rgba(26,95,122,.35);
}
.btn-accent {
  background: var(--clr-accent);
  color: #fff;
  border-color: var(--clr-accent);
}
.btn-accent:hover {
  background: var(--clr-accent-d);
  border-color: var(--clr-accent-d);
  color: #fff;
}
.btn-quiet {
  border-color: var(--clr-border);
  color: var(--clr-ink-soft);
}
.btn-quiet:hover {
  background: var(--clr-surface-alt);
  color: var(--clr-ink);
  border-color: var(--clr-ink-muted);
}
.btn-danger {
  border-color: var(--clr-danger);
  color: var(--clr-danger);
}
.btn-danger:hover { background: rgba(200,75,49,.08); }
.btn-sm { min-height: 36px; padding: .35rem .9rem; font-size: .875rem; }
.btn[disabled] { opacity: .45; cursor: not-allowed; pointer-events: none; }

.linklike {
  background: none;
  border: 0;
  color: var(--clr-primary);
  font: inherit;
  font-size: .95rem;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: .18em;
  padding: 0;
}

/* ── Forms ──────────────────────────────────────────────────── */
label {
  display: grid;
  gap: .4rem;
  font-weight: 600;
  font-size: .92rem;
  color: var(--clr-ink-soft);
}
label span.hint {
  font-weight: 400;
  font-size: .82rem;
  color: var(--clr-ink-muted);
}
input:not([type=checkbox]):not([type=radio]),
textarea,
select {
  font: 400 1rem/1.4 var(--font-sans);
  color: var(--clr-ink);
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius);
  padding: .72rem 1rem;
  width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
}
input:focus, textarea:focus, select:focus {
  border-color: var(--clr-primary);
  outline: none;
  box-shadow: 0 0 0 3px var(--clr-primary-l);
}
[aria-invalid="true"] { border-color: var(--clr-danger) !important; }
.field-error { color: var(--clr-danger); font-size: .85rem; font-weight: 500; }
input[type=checkbox] { width: 1.15rem; height: 1.15rem; accent-color: var(--clr-primary); }
textarea.code { font-family: var(--font-mono); font-size: .85rem; line-height: 1.5; resize: vertical; }

/* ── Flash messages ─────────────────────────────────────────── */
.flash {
  border-radius: var(--radius);
  padding: .9rem 1.1rem;
  margin-block: .75rem;
  border-left: 4px solid var(--clr-accent);
  background: var(--clr-accent-l);
  font-size: .95rem;
}
.flash-error { border-color: var(--clr-danger); background: rgba(200,75,49,.1); }
.flash-info  { border-color: var(--clr-warn);   background: rgba(176,125,26,.1); }

/* ── Severity pills / badges ────────────────────────────────── */
.pill {
  display: inline-block;
  padding: .18rem .7rem;
  border-radius: var(--radius-full);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .03em;
  text-transform: uppercase;
}
.lvl-low      { background: rgba(39,122,78,.15); color: var(--clr-low); }
.lvl-mild     { background: rgba(93,138,42,.15); color: var(--clr-mild); }
.lvl-moderate { background: rgba(160,112,32,.15); color: var(--clr-moderate); }
.lvl-elevated { background: rgba(176,80,48,.15); color: var(--clr-elevated); }
.lvl-high     { background: rgba(138,48,96,.15); color: var(--clr-high); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .22rem .7rem;
  border-radius: var(--radius-sm);
  font-size: .8rem;
  font-weight: 500;
  background: var(--clr-surface-alt);
  border: 1px solid var(--clr-border);
  color: var(--clr-ink-soft);
}

/* ── Panels / cards ─────────────────────────────────────────── */
.panel {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 2.5vw, 2rem);
  box-shadow: var(--shadow-sm);
}
.panel + .panel { margin-top: 1.25rem; }

/* ── Tables ─────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(--radius); }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: .92rem;
}
th {
  font-weight: 600;
  font-size: .82rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--clr-ink-muted);
  background: var(--clr-bg);
  padding: .65rem 1rem;
  text-align: left;
  white-space: nowrap;
}
td {
  padding: .75rem 1rem;
  border-top: 1px solid var(--clr-border);
  color: var(--clr-ink-soft);
  vertical-align: middle;
}
tr:hover td { background: var(--clr-primary-xl); }

/* ── Tabs ───────────────────────────────────────────────────── */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  border-bottom: 2px solid var(--clr-border);
  padding-bottom: 0;
  margin-bottom: 1.5rem;
}
.tabs a {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .55rem 1.1rem;
  border-radius: var(--radius) var(--radius) 0 0;
  font-size: .9rem;
  font-weight: 600;
  color: var(--clr-ink-soft);
  text-decoration: none;
  border: 1px solid transparent;
  border-bottom: none;
  margin-bottom: -2px;
  transition: color var(--transition), background var(--transition);
}
.tabs a:hover { color: var(--clr-primary); background: var(--clr-primary-xl); }
.tabs a[aria-current="page"] {
  color: var(--clr-primary);
  background: var(--clr-surface);
  border-color: var(--clr-border);
  border-bottom-color: var(--clr-surface);
}
.tabs .count {
  background: var(--clr-primary-l);
  color: var(--clr-primary);
  border-radius: var(--radius-full);
  padding: .05rem .45rem;
  font-size: .75rem;
  font-weight: 700;
}

/* ── Sparklines ─────────────────────────────────────────────── */
.spark { overflow: visible; }
.spark-base { stroke: var(--clr-border); stroke-width: 1; }
.spark-line { stroke: var(--clr-primary); stroke-width: 2; fill: none; stroke-linejoin: round; }
.spark-dot  { fill: var(--clr-primary); }

/* ── Progress bar ───────────────────────────────────────────── */
progress {
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border: 0;
  border-radius: var(--radius-full);
  background: var(--clr-border);
  overflow: hidden;
  color: var(--clr-primary);
}
progress::-webkit-progress-bar   { background: var(--clr-border); border-radius: var(--radius-full); }
progress::-webkit-progress-value { background: currentColor; border-radius: var(--radius-full); }
progress::-moz-progress-bar      { background: currentColor; border-radius: var(--radius-full); }

/* ── Actions row ────────────────────────────────────────────── */
.actions { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }
.page-head { margin-bottom: 2rem; }
.page-head .lede { font-size: 1.05rem; color: var(--clr-ink-soft); max-width: var(--measure); margin-top: .5rem; }
.empty {
  border: 1.5px dashed var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  color: var(--clr-ink-soft);
}
.empty-icon { font-size: 2.5rem; margin-bottom: .75rem; opacity: .4; }

/* ── Unsplash-style disorder images ─────────────────────────── */
.disorder-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-lg);
  display: block;
  background: var(--clr-surface-alt);
}

@media (max-width: 600px) {
  body { font-size: .96rem; }
}