/* BookrMD marketing site */

:root {
  --paper: #f7f8f4;
  --paper2: #f0ebe5;
  --ink: #1c1512;
  --ink-soft: rgba(28, 21, 18, 0.68);
  --pine: #ea580c;
  --pine-deep: #c2410c;
  --pine-100: #ffedd5;
  --mint: #fbbf24;
  --mint-bright: #f59e0b;
  --amber: #f59e0b;
  --line: #e8e1d9;
}

html {
  scroll-behavior: smooth;
}

::selection {
  background: var(--pine);
  color: var(--paper);
}

body {
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* --- type helpers --- */
.h-display {
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 0.98;
}

.h2 {
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.05;
  font-size: clamp(1.9rem, 4.2vw, 3.1rem);
}

.eyebrow {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--pine);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--pine);
  opacity: 0.6;
}

.serif-accent {
  font-family: "Newsreader", Georgia, serif;
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
}

/* --- buttons --- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--pine);
  color: var(--paper);
  font-weight: 600;
  font-size: 14px;
  padding: 0.72rem 1.25rem;
  border-radius: 0.75rem;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), background 0.2s, box-shadow 0.35s;
  box-shadow: 0 1px 0 rgba(28, 21, 18, 0.08);
}

.btn-primary:hover {
  background: var(--pine-deep);
  transform: translateY(-1px);
  box-shadow: 0 10px 24px -12px rgba(234, 88, 12, 0.55);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 14px;
  padding: 0.72rem 1.25rem;
  border-radius: 0.75rem;
  border: 1px solid var(--line);
  color: var(--ink);
  background: transparent;
  transition: border-color 0.2s, background 0.2s;
}

.btn-ghost:hover {
  border-color: var(--pine);
  background: var(--pine-100);
}

.btn-light {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--mint-bright);
  color: var(--ink);
  font-weight: 700;
  font-size: 14px;
  padding: 0.78rem 1.35rem;
  border-radius: 0.75rem;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), filter 0.2s;
}

.btn-light:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
}

/* --- nav --- */
.nav-link {
  padding: 0.5rem 0.75rem;
  border-radius: 0.6rem;
  transition: color 0.2s, background 0.2s;
}

.nav-link:hover {
  color: var(--ink);
  background: var(--pine-100);
}

.nav-link.active {
  color: var(--pine);
  font-weight: 600;
}

/* --- ECG pulse divider (signature) --- */
.ecg {
  width: 100%;
  overflow: visible;
}

.ecg path {
  fill: none;
  stroke: var(--pine);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1200;
  stroke-dashoffset: 1200;
}

.ecg.on-mint path {
  stroke: var(--mint-bright);
}

.reveal-visible .ecg path,
.ecg.play path {
  animation: ecg-draw 2.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes ecg-draw {
  to {
    stroke-dashoffset: 0;
  }
}

.ecg-dot {
  animation: ecg-blink 1.6s ease-in-out infinite;
}

@keyframes ecg-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.25; }
}

/* --- cards --- */
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.45s, border-color 0.3s;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(234, 88, 12, 0.35);
  box-shadow: 0 24px 48px -24px rgba(28, 21, 18, 0.18);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: var(--pine-100);
  color: var(--pine-deep);
}

.chip.on-dark {
  background: rgba(251, 191, 36, 0.14);
  color: var(--mint);
}

/* --- appointment mockup card --- */
.appt {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 1rem;
  box-shadow: 0 18px 40px -22px rgba(28, 21, 18, 0.25);
}

.appt-status {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--mint-bright);
  box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.25);
}

/* --- scroll reveal --- */
.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-visible, .js .reveal-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }

/* --- background texture: subtle grid + grain --- */
.bg-grid {
  background-image:
    linear-gradient(rgba(234, 88, 12, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(234, 88, 12, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, black 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, black 40%, transparent 100%);
}

.grain::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.5;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.03 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* --- dark section --- */
.section-dark {
  background: var(--ink);
  color: var(--paper);
}

.section-dark .card {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.1);
}

.section-dark .card:hover {
  border-color: rgba(251, 191, 36, 0.4);
  box-shadow: 0 24px 48px -24px rgba(0, 0, 0, 0.6);
}

/* --- footer --- */
.footer-link {
  transition: color 0.2s;
}

.footer-link:hover {
  color: var(--mint-bright);
}

/* --- FAQ --- */
details.faq {
  border-bottom: 1px solid var(--line);
}

details.faq summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 0;
  font-weight: 600;
}

details.faq summary::-webkit-details-marker {
  display: none;
}

details.faq summary::after {
  content: "+";
  font-family: "JetBrains Mono", monospace;
  color: var(--pine);
  font-size: 18px;
  transition: transform 0.3s;
}

details.faq[open] summary::after {
  transform: rotate(45deg);
}

details.faq p {
  padding-bottom: 1.1rem;
  color: var(--ink-soft);
  line-height: 1.65;
}

/* --- misc --- */
.num-badge {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  color: var(--pine);
  border: 1px solid var(--line);
  border-radius: 999px;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  background: #fff;
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .ecg path { animation: none; stroke-dashoffset: 0; }
  .ecg-dot { animation: none; }
}