/* ============================================================
   Preferred Plumbing Toolkit — shared design system
   Typography: Geist (sans-serif) + Geist Mono.
   ============================================================ */

:root {
  /* ─── Navy scale (v1.9.3 — rebuilt around #253747 primary navy) ───
     A lighter, warmer base than the prior near-black navy.
     The scale steps both up (lighter, for elevated surfaces) and
     down (darker, for deepest backgrounds and tx-inv text). */
  --navy:       #253747;     /* PRIMARY NAVY — the baseline page tone */
  --navy-dp:    #1A2733;     /* page background (deeper than primary) */
  --navy-dk:    #1F2E3D;     /* card background */
  --navy-md:    #2C4254;     /* elevated surface (panel headers, popovers) */
  --navy-lt:    #344C61;     /* hover/border on dark surfaces */
  --navy-hi:    #3D586F;     /* highest navy step (for emphasis) */

  /* ─── Green accent (v1.9.3 — primary green #31B44B) ───
     Slightly brighter and more saturated than the v1.9.2 green.
     The tinted helpers (glow/soft) are derived from the same RGB
     so transparency overlays stay consistent. */
  --green:      #31B44B;     /* PRIMARY GREEN — action color, locked */
  --green-dk:   #228B33;     /* deeper green for hovers/pressed */
  --green-lt:   #4DC862;     /* lighter green for highlights */
  --green-glow: rgba(49,180,75,.35);   /* shadow / focus ring */
  --green-soft: rgba(49,180,75,.10);   /* subtle wash backgrounds */

  /* Per-tool accent colors for tile icons */
  --accent-est:  #31B44B;
  --accent-dwv:  #3B82F6;
  --accent-gas:  #F5A524;

  /* Text */
  --tx:     #F4F7FA;
  --tx2:    rgba(244,247,250,.72);
  --tx3:    rgba(244,247,250,.48);
  --tx-inv: #1A2733;     /* used on green buttons; matches navy-dp */

  /* Borders & fills */
  --brd:      rgba(255,255,255,.08);
  --brd-hi:   rgba(255,255,255,.18);
  --fill:     rgba(255,255,255,.03);
  --fill-hi:  rgba(255,255,255,.06);
  --fill-max: rgba(255,255,255,.10);

  /* State */
  --red: #FF4D4F; --red-bg: rgba(255,77,79,.10);
  --amb: #F5A524; --amb-bg: rgba(245,165,36,.10);
  --blue:#3B82F6; --blue-bg:rgba(59,130,246,.12);

  /* Shadows */
  --sh-xs: 0 1px 2px rgba(0,0,0,.4);
  --sh:    0 2px 8px rgba(0,0,0,.25), 0 12px 32px rgba(0,0,0,.2);
  --sh-md: 0 4px 16px rgba(0,0,0,.35), 0 20px 48px rgba(0,0,0,.25);
  --sh-lg: 0 8px 24px rgba(0,0,0,.4), 0 32px 64px rgba(0,0,0,.3);

  /* Radii */
  --r-sm: 8px;  --r: 12px;  --r-lg: 16px;  --r-xl: 24px;  --r-full: 999px;

  /* Motion */
  --ease: cubic-bezier(.2,.8,.2,1);
  --ease-out: cubic-bezier(.16,1,.3,1);
  --t: 180ms;  --t-slow: 420ms;

  /* Typography — Geist sans-serif family */
  --font-sans: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Geist Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;

  /* Spacing scale (4px base) */
  --sp-1:4px;  --sp-2:8px;  --sp-3:12px; --sp-4:16px;
  --sp-5:20px; --sp-6:24px; --sp-7:32px; --sp-8:48px;
  --sp-9:64px; --sp-10:80px;

  /* Type scale */
  --fs-micro: 11px;
  --fs-xs:    12px;
  --fs-sm:    13px;
  --fs-md:    14px;
  --fs-base:  15px;
  --fs-lg:    17px;
  --fs-xl:    20px;
  --fs-2xl:   28px;
  --fs-3xl:   40px;
  --fs-4xl:   56px;
  --fs-5xl:   80px;

  --lh-tight:   1.05;
  --lh-snug:    1.2;
  --lh-normal:  1.45;
  --lh-relaxed: 1.6;

  --track-tight: -.035em;
  --track-base:  -.01em;
  --track-wide:  0;
  --track-caps:  .1em;

  /* Header height — static across every page */
  --nav-h: 64px;

  /* Canvas-tool side-panel widths (v1.9.8 — shared across takeoff,
     DWV, gas so all three look identical). Override at the page
     level only when there's a real reason. */
  --side-panel-w-left:  280px;
  --side-panel-w-right: 280px;
}

/* -------- Reset ----- */
*,*::before,*::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  font-weight: 400;
  color: var(--tx);
  /* v1.9.3: solid primary navy backdrop + two soft green glows
     (Option B). Glows kept subtle so the surface still reads as
     a calm workspace, not a hero landing. */
  background:
    radial-gradient(1100px 650px at 92% -8%,  rgba(49,180,75,.06), transparent 60%),
    radial-gradient(900px 550px at -6% 108%,  rgba(49,180,75,.04), transparent 60%),
    var(--navy);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: 'ss01', 'cv11';
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img { max-width: 100%; display: block; }
input, select, textarea, .pp-nav, .pp-btn { font-family: var(--font-sans); }

/* ============================================================
   TOP NAV — static across every page
   ============================================================ */
.pp-nav {
  position: sticky; top: 0; z-index: 500;
  display: flex; align-items: center;
  height: var(--nav-h); min-height: var(--nav-h);
  padding: 0 var(--sp-6);
  background: rgba(15,24,36,.75);
  backdrop-filter: saturate(160%) blur(16px);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  border-bottom: 1px solid var(--brd);
  gap: var(--sp-4);
  flex-shrink: 0;
}
.pp-nav__brand {
  display: flex; align-items: center;
  height: 30px;
  transition: opacity var(--t) var(--ease);
  flex-shrink: 0;
}
.pp-nav__brand:hover { opacity: .78; }
.pp-nav__brand img { height: 24px; width: auto; display: block; }

.pp-nav__links {
  display: flex; gap: 2px;
  margin-left: var(--sp-6);
  padding-left: var(--sp-6);
  border-left: 1px solid var(--brd);
  height: 30px; align-items: center;
}
.pp-nav__link {
  padding: 7px 13px;
  border-radius: var(--r-sm);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--tx2);
  letter-spacing: var(--track-base);
  transition: all var(--t) var(--ease);
  white-space: nowrap;
  line-height: 1;
}
.pp-nav__link:hover { color: var(--tx); background: var(--fill-hi); }
.pp-nav__link.is-active {
  color: var(--tx);
  background: var(--green-soft);
  box-shadow: inset 0 0 0 1px rgba(49,180,75,.28);
}
/* Takeoff is the newest entry — visually emphasized */
.pp-nav__link--takeoff:not(.is-active) {
  background: linear-gradient(180deg, var(--green-lt) 0%, var(--green) 100%);
  color: var(--tx-inv);
  font-weight: 600;
  box-shadow: 0 1px 0 rgba(255,255,255,.24) inset, 0 4px 14px rgba(49,180,75,.30);
  margin-left: var(--sp-3);
}
.pp-nav__link--takeoff.is-active {
  background: linear-gradient(180deg, var(--green-lt) 0%, var(--green) 100%);
  color: var(--tx-inv);
  font-weight: 600;
  box-shadow: 0 1px 0 rgba(255,255,255,.32) inset, 0 4px 14px rgba(49,180,75,.40);
  margin-left: var(--sp-3);
}

.pp-nav__spacer { flex: 1; }

.pp-nav__user {
  display: flex; align-items: center; gap: var(--sp-2);
  padding: 3px 14px 3px 3px;
  border-radius: var(--r-full);
  background: var(--fill);
  border: 1px solid var(--brd);
  cursor: pointer;
  transition: all var(--t) var(--ease);
  position: relative; height: 36px;
}
.pp-nav__user:hover { background: var(--fill-hi); border-color: var(--brd-hi); }
.pp-nav__avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--navy-lt);
  display: flex; align-items: center; justify-content: center;
  font-size: var(--fs-xs); font-weight: 600; color: var(--tx);
  overflow: hidden; flex-shrink: 0;
}
.pp-nav__avatar img   { width: 100%; height: 100%; object-fit: cover; }
.pp-nav__user-meta    { font-size: var(--fs-xs); line-height: 1.2; }
.pp-nav__user-name    { font-weight: 600; color: var(--tx); font-size: var(--fs-xs); letter-spacing: var(--track-base); }
.pp-nav__user-email   { color: var(--tx3); font-size: 10.5px; letter-spacing: 0; }

.pp-nav__menu {
  position: absolute; top: calc(100% + 8px); right: 0;
  min-width: 220px;
  padding: 6px;
  background: var(--navy-md);
  border: 1px solid var(--brd-hi);
  border-radius: var(--r);
  box-shadow: var(--sh-md);
  display: none;
  animation: ppMenuIn 180ms var(--ease-out);
}
.pp-nav__menu.is-open { display: block; }
.pp-nav__menu-item {
  display: flex; align-items: center; gap: var(--sp-3);
  padding: 9px 10px;
  border-radius: var(--r-sm);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--tx);
  transition: background var(--t) var(--ease);
}
.pp-nav__menu-item:hover { background: var(--fill-hi); }
.pp-nav__menu-item.danger { color: var(--red); }
.pp-nav__menu-sep { height: 1px; background: var(--brd); margin: 4px 2px; }

@keyframes ppMenuIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   MOBILE-ONLY nav adjustments (≤720px wide).
   Desktop and tablet layouts above this width are unchanged.
   ============================================================ */
.pp-nav__hamburger {
  display: none;  /* hidden on desktop */
  align-items: center; justify-content: center;
  width: 36px; height: 36px;
  background: transparent;
  color: var(--tx);
  border: 1px solid var(--brd);
  border-radius: var(--r-sm);
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}
.pp-nav__hamburger:hover { background: var(--fill-hi); border-color: var(--brd-hi); }

@media (max-width: 720px) {
  /* Show hamburger, hide the inline links row. */
  .pp-nav__hamburger { display: inline-flex; }
  .pp-nav__links {
    /* Inline links collapse into a slide-down panel absolutely positioned
       under the nav bar. Appears when .pp-nav--mobile-open is set. */
    position: absolute;
    top: 100%; left: 0; right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    height: auto;
    margin: 0;
    padding: var(--sp-3);
    gap: var(--sp-1);
    background: rgba(15,24,36,.98);
    border: 0;
    border-top: 1px solid var(--brd);
    border-bottom: 1px solid var(--brd-hi);
    backdrop-filter: saturate(160%) blur(16px);
    -webkit-backdrop-filter: saturate(160%) blur(16px);
    box-shadow: 0 10px 30px rgba(0,0,0,.5);
    z-index: 499;
  }
  .pp-nav--mobile-open .pp-nav__links {
    display: flex;
    animation: ppMenuIn 180ms var(--ease-out);
  }
  .pp-nav--mobile-open .pp-nav__hamburger {
    background: var(--green-soft);
    border-color: rgba(49,180,75,.3);
    color: var(--green-lt);
  }
  .pp-nav__links .pp-nav__link {
    padding: 13px 14px;
    font-size: var(--fs-md);
    line-height: 1.2;
    border-radius: var(--r);
    text-align: left;
  }

  /* Center the logo between hamburger and user avatar */
  .pp-nav { padding: 0 var(--sp-3); position: relative; }
  .pp-nav__brand {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }
  .pp-nav__brand img { height: 20px; }

  /* Shrink user badge: avatar + initials only, hide email text */
  .pp-nav__user {
    padding: 2px;
    height: 32px;
    gap: 0;
  }
  .pp-nav__user-meta { display: none; }  /* name/email hidden on mobile */
  .pp-nav__avatar { width: 28px; height: 28px; }
}


/* ============================================================
   BUTTONS — unified system (v1.9.4 / extended v1.9.5)

   Kinds (apply ONE):
     .pp-btn--filled   primary action (green fill)
     .pp-btn--ghost    transparent (tertiary)
     .pp-btn--icon     square, icon-only
     .pp-btn--danger   destructive (red)
     .pp-btn--add      "+ Add a thing" (green-tinted, dashed)
   (default — no kind modifier — is the secondary outline style)

   Sizes (apply at most ONE; default is medium):
     .pp-btn--sm       28px tall
     .pp-btn--lg       44px tall

   Shape modifiers:
     .pp-btn--pill     fully rounded (use ONLY on the single
                       most prominent action on a screen — the
                       visual "this is the forward action" cue)

   Compositions:
     .pp-btn-split          wrapper for main+caret pairs (DWV "Save Riser")
       └ .pp-btn--split-main   left half (typically pp-btn--filled)
       └ .pp-btn--split-caret  right half — caret-only

   Backwards compatibility:
     Existing rules .pp-btn--filled / --ghost / --sm / --lg are
     preserved and used as-is by tools that already adopted them.
   ============================================================ */
.pp-btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: var(--sp-2);
  padding: 10px 18px;
  border-radius: var(--r-sm);
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: var(--track-base);
  line-height: 1;
  background: var(--fill);
  color: var(--tx);
  border: 1px solid var(--brd);
  transition: all var(--t) var(--ease);
  cursor: pointer; white-space: nowrap;
  user-select: none;
}
.pp-btn:hover { background: var(--fill-hi); border-color: var(--brd-hi); }
.pp-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--green-glow);
}
.pp-btn:active { transform: translateY(1px); }
.pp-btn:disabled, .pp-btn[aria-disabled="true"] {
  opacity: .5; cursor: not-allowed;
  transform: none;
}

/* ─── Kind: filled (primary action) ─── */
.pp-btn--filled {
  background: linear-gradient(180deg, var(--green-lt) 0%, var(--green) 100%);
  color: var(--tx-inv);
  border-color: transparent;
  font-weight: 600;
  box-shadow: 0 1px 0 rgba(255,255,255,.24) inset, 0 4px 14px rgba(49,180,75,.30);
}
.pp-btn--filled:hover {
  background: linear-gradient(180deg, var(--green-lt) 0%, var(--green-dk) 100%);
  box-shadow: 0 1px 0 rgba(255,255,255,.24) inset, 0 6px 22px rgba(49,180,75,.45);
  transform: translateY(-1px);
}
.pp-btn--filled:active { transform: translateY(0); }

/* ─── Kind: ghost (tertiary) ─── */
.pp-btn--ghost {
  background: transparent;
  border: 1px solid transparent;
  color: var(--tx2);
}
.pp-btn--ghost:hover {
  background: var(--fill-hi);
  border-color: var(--brd);
  color: var(--tx);
}

/* ─── Kind: icon (square, icon-only) ─── */
.pp-btn--icon {
  width: 36px; height: 36px;
  padding: 0;
  border-radius: var(--r-sm);
  background: transparent;
  border: 1px solid transparent;
  color: var(--tx2);
  flex-shrink: 0;
}
.pp-btn--icon:hover {
  background: var(--fill-hi);
  border-color: var(--brd);
  color: var(--tx);
}
.pp-btn--icon svg { width: 16px; height: 16px; }
.pp-btn--icon.pp-btn--sm { width: 28px; height: 28px; }
.pp-btn--icon.pp-btn--sm svg { width: 14px; height: 14px; }
.pp-btn--icon.pp-btn--lg { width: 44px; height: 44px; }
.pp-btn--icon.pp-btn--lg svg { width: 20px; height: 20px; }

/* ─── Kind: danger (destructive) ─── */
.pp-btn--danger {
  background: var(--red-bg);
  color: var(--red);
  border: 1px solid rgba(255,77,79,.32);
}
.pp-btn--danger:hover {
  background: rgba(255,77,79,.18);
  border-color: rgba(255,77,79,.52);
  color: var(--red);
}
.pp-btn--danger:focus-visible {
  box-shadow: 0 0 0 3px rgba(255,77,79,.30);
}

/* ─── Kind: add (new-thing actions — "+ Add task", "+ Add fixture") ───
   A green-tinted dashed-border button. The semantic difference from
   --filled is that this isn't *the* forward action — it's a "create
   another row in this list" action. The dashed border signals "this
   creates something new." */
.pp-btn--add {
  background: var(--green-soft);
  color: var(--green-lt);
  border: 1px dashed rgba(49,180,75,.4);
  font-weight: 600;
}
.pp-btn--add:hover {
  background: rgba(49,180,75,.18);
  border-color: rgba(49,180,75,.6);
  color: var(--green-lt);
}
.pp-btn--add:focus-visible {
  box-shadow: 0 0 0 3px var(--green-glow);
}

/* ─── State: toggled (button is "on") ───
   For toggle buttons that flip between two states (e.g. gas riser's
   "existing" toggle on appliances). Amber fill so the toggled state
   is visually distinct from the primary green action. */
.pp-btn--toggled {
  background: var(--amb);
  color: var(--tx-inv);
  border-color: transparent;
  font-weight: 600;
}
.pp-btn--toggled:hover {
  background: var(--amb);
  filter: brightness(1.08);
  color: var(--tx-inv);
}
.pp-btn--toggled:focus-visible {
  box-shadow: 0 0 0 3px rgba(245,165,36,.30);
}

/* ─── Sizes ─── */
.pp-btn--sm    { padding: 7px 12px;  font-size: var(--fs-xs); height: 28px; }
.pp-btn--lg    { padding: 14px 22px; font-size: var(--fs-md); height: 44px; }
/* default (medium) is 36px from the base padding/font-size */

/* ─── Shape modifier: pill ─── */
.pp-btn--pill { border-radius: var(--r-full); }
.pp-btn--pill.pp-btn--sm { padding-left: 14px; padding-right: 14px; }
.pp-btn--pill.pp-btn--lg { padding-left: 26px; padding-right: 26px; }

/* ─── Composition: split button (main + caret) ─── */
.pp-btn-split {
  display: inline-flex; align-items: stretch;
  border-radius: var(--r-sm);
  position: relative;  /* anchor for absolutely-positioned dropdown menus */
}
.pp-btn-split.pp-btn--pill { border-radius: var(--r-full); }
.pp-btn-split > .pp-btn {
  border-radius: 0;
}
.pp-btn-split > .pp-btn--split-main {
  border-top-left-radius: inherit;
  border-bottom-left-radius: inherit;
  margin: 0;
  border-right: 1px solid rgba(255,255,255,.18);
}
.pp-btn-split > .pp-btn--split-caret {
  width: 32px;
  padding: 0;
  border-top-right-radius: inherit;
  border-bottom-right-radius: inherit;
  font-size: 10px;
  letter-spacing: 0;
}
.pp-btn-split > .pp-btn--split-caret svg { width: 12px; height: 12px; }


/* ============================================================
   STATUS DOT
   ============================================================ */
.pp-dot {
  display: inline-block; width: 8px; height: 8px; border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green-glow);
}
.pp-dot--red  { background: var(--red);  box-shadow: 0 0 8px rgba(255,77,79,.5); }
.pp-dot--amb  { background: var(--amb);  box-shadow: 0 0 8px rgba(245,165,36,.5); }
.pp-dot--gray { background: var(--tx3);  box-shadow: none; }

/* A11Y */
*:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
  border-radius: 4px;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}

/* ============================================================
   TOOL-PAGE BUTTON HARMONIZATION
   Normalize DWV's .btn-split and GAS's .split-btn to one look.
   Both become the same green pill with a caret — same shape,
   same colors, same font, same height.
   ============================================================ */

/* The outer container provides the rounded shape + shadow.
   overflow:hidden means the inner buttons can have 0 radius. */
.btn-split, .split-btn {
  display: inline-flex !important;
  align-items: stretch !important;
  border-radius: var(--r-sm) !important;
  /* Do NOT use overflow:hidden here — the save-menu dropdown (a child of
     .btn-split) is position:absolute and would be clipped. The inner
     buttons zero their own adjacent corners instead. */
  box-shadow: 0 1px 0 rgba(255,255,255,.24) inset,
              0 4px 14px rgba(49,180,75,.30) !important;
  height: 34px !important;
  position: relative;
  background: transparent !important;
  padding: 0 !important;
}

/* Every interior button: identical styling, flat inside the container. */
.btn-split > button,
.split-btn > button,
.btn-split .btn.filled,
.split-btn .btn.filled,
.btn-split-main, .split-main,
.btn-split-arrow, .split-caret {
  background: linear-gradient(180deg, var(--green-lt) 0%, var(--green) 100%) !important;
  color: var(--tx-inv) !important;
  border: none !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  font-family: var(--font-sans) !important;
  font-weight: 600 !important;
  font-size: var(--fs-sm) !important;
  letter-spacing: var(--track-base) !important;
  height: 34px !important;
  padding: 0 16px !important;
  margin: 0 !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  transition: filter var(--t) var(--ease) !important;
  cursor: pointer;
}

/* The caret portion gets a subtle divider + tighter padding. */
.btn-split-arrow, .split-caret,
.btn-split > button:last-child,
.split-btn  > button:last-child {
  padding: 0 11px !important;
  border-left: 1px solid rgba(0,0,0,.22) !important;
  min-width: 34px !important;
  width: 34px !important;
}

/* Gas's caret uses an SVG, DWV's uses the ▾ text character. Force both to
   render the same ▾ unicode glyph for pixel-perfect parity. */
.split-caret svg { display: none !important; }
.split-caret::after,
.btn-split-arrow:empty::after {
  content: '▾';
  font-size: 12px;
  line-height: 1;
  color: var(--tx-inv);
  display: inline-block;
}

/* Hover: both halves brighten together. */
.btn-split:hover  > button,
.btn-split:hover  .btn.filled,
.btn-split:hover  .btn-split-main,
.btn-split:hover  .btn-split-arrow,
.split-btn:hover  > button,
.split-btn:hover  .btn.filled,
.split-btn:hover  .split-main,
.split-btn:hover  .split-caret {
  filter: brightness(1.07) !important;
}