/* ============================================================
   THE HUMBLE NURSE — BASE STYLES
   Reset, Nav, Footer, Typography utilities, Animations
   ============================================================ */


/* ── RESET ───────────────────────────────────────────────────  */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--fg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background 0.4s, color 0.4s;
  cursor: none; /* custom cursor — disabled on touch devices below */
}
img { display: block; max-width: 100%; height: auto; }
a   { text-decoration: none; color: inherit; }
button { font-family: inherit; border: none; background: none; cursor: none; }

/* Restore normal cursor on touch screens */
@media (hover: none) {
  body, button { cursor: auto; }
}

/* Scrollbar */
::-webkit-scrollbar       { width: 2px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--red); }


/* ── CUSTOM CURSOR ───────────────────────────────────────────
   Two elements: a dot and a ring that lags behind.
   Controlled in main.js                                      */
#cursor-dot {
  position: fixed;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--fg);
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  mix-blend-mode: difference; /* inverts color over elements */
}
#cursor-ring {
  position: fixed;
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(193, 18, 31, 0.5);
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition:
    width  0.35s var(--ease),
    height 0.35s var(--ease),
    border-color 0.3s;
}
/* Ring expands when hovering links/buttons */
body:has(a:hover)      #cursor-ring,
body:has(button:hover) #cursor-ring {
  width: 52px; height: 52px;
  border-color: var(--red);
}


/* ── NAV ─────────────────────────────────────────────────────
   Fixed top navigation bar                                   */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gutter);
  /* Becomes solid when user scrolls (class added by JS) */
  transition: background 0.4s, border-color 0.4s;
}
.nav.solid {
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-logo img {
  width: 30px; height: 30px;
  border-radius: 5px;
  object-fit: contain;
}
.nav-wordmark {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 2.5px;
  color: var(--fg);
  transition: color 0.4s;
}

/* Desktop links */
.nav-links {
  display: flex;
  gap: 32px;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--fg2);
  transition: color 0.2s;
  position: relative;
}
/* Underline animation on hover */
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 1px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s var(--ease);
}
.nav-links a:hover { color: var(--fg); }
.nav-links a:hover::after { transform: scaleX(1); transform-origin: left; }

/* Right side */
.nav-right { display: flex; align-items: center; gap: 10px; }

/* CTA button in nav */
.nav-cta {
  padding: 8px 20px;
  border-radius: 3px;
  background: var(--red);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  transition: background 0.2s;
  display: inline-block;
}
.nav-cta:hover { background: var(--red-bright); }

/* Theme toggle button (☾ / ☀) */
.theme-btn {
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border2);
  color: var(--fg2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: border-color 0.2s, color 0.2s, background 0.4s;
  background: transparent;
  cursor: pointer;
}
.theme-btn:hover { border-color: var(--red); color: var(--red); }

/* Mobile hamburger button */
.nav-burger {
  display: none; /* shown on mobile only */
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  cursor: pointer;
  background: none;
  border: none;
}
.nav-burger span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--fg);
  border-radius: 2px;
  transition: transform 0.4s var(--ease), opacity 0.3s, background 0.4s;
}
/* X state when open */
.nav-burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Full-screen mobile nav drawer */
.nav-drawer {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 490;
  background: var(--bg);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 36px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s, background 0.4s;
}
.nav-drawer.open {
  display: flex;
  opacity: 1;
  pointer-events: auto;
}
.nav-drawer a {
  font-family: var(--font-display);
  font-size: clamp(40px, 10vw, 72px);
  letter-spacing: 2px;
  color: var(--fg2);
  transition: color 0.2s;
}
.nav-drawer a:hover { color: var(--red); }


/* ── FOOTER ──────────────────────────────────────────────────  */
.footer {
  padding: 44px var(--gutter);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  background: var(--bg);
  transition: background 0.4s, border-color 0.4s;
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 2px;
  color: var(--fg);
  transition: color 0.4s;
}
.footer-copy {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg3);
  margin-top: 4px;
  transition: color 0.4s;
}
.footer-links { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-links a {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg3);
  letter-spacing: 0.5px;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--red); }


/* ── LAYOUT UTILITIES ────────────────────────────────────────  */
.mw    { max-width: var(--max-w); margin: 0 auto; }
.s-pad { padding: 100px var(--gutter); }

/* Eyebrow label above headings */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: '';
  width: 28px; height: 1px;
  background: var(--red);
  flex-shrink: 0;
}

/* Display headings */
.d1 {
  font-family: var(--font-display);
  font-size: clamp(72px, 11vw, 152px);
  line-height: 0.9;
  letter-spacing: -1px;
}
.d2 {
  font-family: var(--font-display);
  font-size: clamp(44px, 6.5vw, 88px);
  line-height: 0.95;
  letter-spacing: -0.3px;
}
.body-lg {
  font-size: clamp(15px, 1.4vw, 17px);
  font-weight: 300;
  line-height: 1.8;
  color: var(--fg2);
  transition: color 0.4s;
}


/* ── SCROLL REVEAL ANIMATIONS ────────────────────────────────
   Elements with .fu class fade up when scrolled into view.
   Controlled by IntersectionObserver in main.js             */
.fu {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.85s var(--ease), transform 0.85s var(--ease);
}
.fu.v { opacity: 1; transform: translateY(0); }

/* Stagger delays for grouped elements */
.d1x { transition-delay: 0.1s; }
.d2x { transition-delay: 0.2s; }
.d3x { transition-delay: 0.3s; }
.d4x { transition-delay: 0.4s; }
.d5x { transition-delay: 0.5s; }

/* Line reveal (text slides up from clip) */
.lrev { overflow: hidden; }
.lrev-in {
  display: block;
  transform: translateY(110%);
  transition: transform 0.95s var(--ease);
}
.lrev.v .lrev-in { transform: translateY(0); }


/* ── BUTTONS ─────────────────────────────────────────────────  */

/* Primary (red filled) */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 3px;
  background: var(--red);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  transition: background 0.2s, transform 0.2s, gap 0.3s var(--ease);
  position: relative;
  overflow: hidden;
}
.btn-primary::before {
  content: '';
  position: absolute; inset: 0;
  background: var(--red-bright);
  transform: translateX(-100%);
  transition: transform 0.4s var(--ease);
}
.btn-primary:hover::before { transform: translateX(0); }
.btn-primary:hover { transform: translateY(-2px); gap: 16px; }
.btn-primary span { position: relative; z-index: 1; }

/* Outline (transparent border) */
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 32px;
  border-radius: 3px;
  border: 1px solid var(--border2);
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  transition: border-color 0.2s, transform 0.2s, color 0.4s;
}
.btn-outline:hover { border-color: var(--fg); transform: translateY(-2px); }


/* ── EKG DIVIDERS ────────────────────────────────────────────
   Animated heartbeat lines between sections.
   Path data in each HTML file.                              */
.ekg-wrap {
  overflow: hidden;
  line-height: 0;
  background: var(--bg);
  transition: background 0.4s;
}
.ekg-wrap.on-bg2 { background: var(--bg2); }
.ekg-svg    { width: 100%; display: block; }
.ekg-glow   {
  stroke: var(--red); stroke-width: 5;
  opacity: 0.05; fill: none;
  stroke-linecap: round; stroke-linejoin: round;
}
.ekg-line   {
  stroke: var(--red); stroke-width: 1.5;
  opacity: 0.45; fill: none;
  stroke-linecap: round; stroke-linejoin: round;
  /* Draws on scroll — controlled by JS */
  stroke-dasharray: 2200;
  stroke-dashoffset: 2200;
  transition: stroke-dashoffset 2.2s var(--ease);
}
.ekg-line.drawn { stroke-dashoffset: 0; }


/* ── MARQUEE TICKER ──────────────────────────────────────────
   Continuously scrolling text strip.
   Edit items in index.html under <!-- MARQUEE ITEMS -->      */
.marquee-wrap {
  overflow: hidden;
  white-space: nowrap;
  padding: 16px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  transition: background 0.4s, border-color 0.4s;
}
.marquee-track {
  display: inline-flex;
  animation: marquee 32s linear infinite;
}
@keyframes marquee {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.marquee-item {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  padding: 0 26px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--fg3);
  transition: color 0.4s;
}
.marquee-dot {
  width: 3px; height: 3px;
  border-radius: 50%;
  background: var(--red);
  flex-shrink: 0;
}


/* ── RESPONSIVE BASE ─────────────────────────────────────────  */
@media (max-width: 900px) {
  /* Hide desktop nav links, show hamburger */
  .nav-links               { display: none; }
  .nav-burger              { display: flex; }
  .nav-right .nav-cta      { display: none; }

  .s-pad { padding: 72px var(--gutter); }
  .footer { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 600px) {
  .nav-wordmark { font-size: 14px; }
}

/* Disable animations for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .fu          { opacity: 1 !important; transform: none !important; }
  .lrev .lrev-in { transform: none !important; }
  .ekg-line    { stroke-dashoffset: 0 !important; }
}


/* ============================================================
   PORTFOLIO SIDE TAB + NAV TREATMENT
   ============================================================
   The red side tab appears on every page.
   It slides in from the right edge.
   Click opens portfolio.html.

   TO EDIT:
   - Change tab text → search "Portfolio Tab Text" below
   - Change tab color → --tab-red variable below
   - Move tab up/down → change `top` value on .port-tab
   - Hide tab on a page → add class "no-port-tab" to <body>
   ============================================================ */

/* ── SIDE TAB ─────────────────────────────────────────────── */
.port-tab {
  position: fixed;
  top: 50%;
  right: 0;
  transform: translateY(-50%) translateX(0);
  z-index: 400;

  /* Red pill shape */
  background: #C1121F;
  color: #fff;
  border-radius: 8px 0 0 8px;  /* rounded left, flush right */

  /* Sizing */
  padding: 0;
  width: 36px;
  overflow: hidden;

  /* Expand on hover */
  transition:
    width 0.4s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.3s;

  cursor: pointer;
  text-decoration: none;
  display: flex;
  align-items: center;

  /* Subtle shadow */
  box-shadow: -3px 0 20px rgba(193, 18, 31, 0.3);
}

.port-tab:hover {
  width: 140px;   /* expands to show full label */
  box-shadow: -4px 0 28px rgba(193, 18, 31, 0.5);
}

/* Inner content — rotated text + icon */
.port-tab-inner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 12px;
  white-space: nowrap;
  min-width: 140px;  /* keeps layout stable during animation */
}

/* Icon dot (always visible) */
.port-tab-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.6);
  flex-shrink: 0;
  animation: tabPulse 2.5s ease infinite;
}
@keyframes tabPulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50%       { opacity: 1;   transform: scale(1.2); }
}

/* Portfolio Tab Text — EDIT label here */
.port-tab-label {
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: #fff;
  font-weight: 400;
}

/* ── NAV PORTFOLIO LINK ───────────────────────────────────── */
/* Red-labeled Portfolio link in the main nav — separated by divider */
.nav-divider {
  width: 1px;
  height: 16px;
  background: rgba(255, 255, 255, 0.12);
  flex-shrink: 0;
}
[data-theme="light"] .nav-divider {
  background: rgba(0, 0, 0, 0.12);
}

/* The Portfolio link in nav gets red treatment */
.nav-links .nav-portfolio-link {
  color: #C1121F !important;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 5px;
}
.nav-links .nav-portfolio-link::after {
  background: #C1121F; /* underline stays red */
}
.nav-links .nav-portfolio-link:hover {
  color: #E63946 !important;
}

/* Small arrow indicator */
.nav-portfolio-link .nav-port-arrow {
  font-size: 10px;
  opacity: 0.7;
  transition: transform 0.2s, opacity 0.2s;
}
.nav-portfolio-link:hover .nav-port-arrow {
  transform: translateX(3px);
  opacity: 1;
}

/* ── PORTFOLIO PAGE — DISTINCT HEADER STRIP ───────────────── */
/* When user lands on portfolio.html, a red accent strip
   appears under the nav to signal "different space"         */
.portfolio-mode-strip {
  background: #C1121F;
  color: #fff;
  text-align: center;
  padding: 8px var(--gutter);
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  z-index: 490;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
.portfolio-mode-strip a {
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  transition: color 0.2s;
}
.portfolio-mode-strip a:hover { color: #fff; }

/* Pushes content below both nav + strip */
.has-portfolio-strip main,
.has-portfolio-strip .port-hero,
.has-portfolio-strip .port-hero-first-section {
  padding-top: calc(var(--nav-h) + 36px + 60px) !important;
}

/* Mobile — hide side tab, show bottom bar instead */
@media (max-width: 768px) {
  .port-tab {
    /* On mobile: sits at bottom center instead of right side */
    top: auto;
    bottom: 20px;
    right: 20px;
    transform: none;
    border-radius: 20px;
    width: auto;
    padding: 0;
  }
  .port-tab:hover {
    width: auto;
  }
  .port-tab-inner {
    padding: 10px 16px;
    min-width: unset;
  }
  .port-tab-dot { display: none; }
  .portfolio-mode-strip { font-size: 9px; padding: 7px 16px; }
}