/* ===================================
   Variables
   =================================== */
:root {
  /* Color scheme */
  color-scheme: light;
  accent-color: hsl(207 45% 62%);

  /* Brand palette (calming, minimalist, stationery-inspired) */
  --color-background: hsl(40 44% 96%); /* cream */
  --color-surface: hsl(40 35% 98%); /* paper surface */
  --color-text: hsl(210 10% 18%); /* refined charcoal */
  --color-heading: hsl(210 12% 14%);
  --color-primary: hsl(207 45% 62%); /* pastel blue */
  --color-primary-600: hsl(207 45% 56%);
  --color-primary-700: hsl(207 45% 48%);
  --color-accent: hsl(16 47% 58%); /* muted terracotta */
  --color-accent-600: hsl(16 47% 52%);
  --color-success: hsl(154 40% 40%);
  --color-warning: hsl(32 85% 50%);
  --color-danger: hsl(0 65% 48%);

  /* Neutral grays */
  --gray-50:  hsl(40 20% 98%);
  --gray-100: hsl(40 16% 96%);
  --gray-200: hsl(220 13% 91%);
  --gray-300: hsl(216 12% 84%);
  --gray-400: hsl(218 11% 65%);
  --gray-500: hsl(220 9% 46%);
  --gray-600: hsl(215 14% 34%);
  --gray-700: hsl(217 19% 27%);
  --gray-800: hsl(215 28% 17%);
  --gray-900: hsl(221 39% 11%);

  /* Typography */
  --font-sans: "Inter", "SF Pro Text", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --font-serif: "Cormorant Garamond", "Iowan Old Style", "Sitka Text", Georgia, "Times New Roman", serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  /* Type scale */
  --fs-100: 0.75rem;   /* 12px */
  --fs-200: 0.875rem;  /* 14px */
  --fs-300: 1rem;      /* 16px */
  --fs-400: 1.125rem;  /* 18px */
  --fs-500: 1.25rem;   /* 20px */
  --fs-600: 1.5rem;    /* 24px */
  --fs-700: 1.875rem;  /* 30px */
  --fs-800: 2.25rem;   /* 36px */
  --fs-900: 3rem;      /* 48px */

  /* Line heights */
  --lh-tight: 1.15;
  --lh-normal: 1.5;
  --lh-relaxed: 1.65;

  /* Spacing scale (0–96px) */
  --space-0: 0;
  --space-1: 2px;
  --space-2: 4px;
  --space-3: 8px;
  --space-4: 12px;
  --space-5: 16px;
  --space-6: 20px;
  --space-7: 24px;
  --space-8: 32px;
  --space-9: 40px;
  --space-10: 48px;
  --space-11: 56px;
  --space-12: 64px;
  --space-13: 72px;
  --space-14: 80px;
  --space-15: 96px;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-pill: 9999px;

  /* Shadows (subtle, paper-like) */
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 1px rgba(16, 24, 40, 0.04);
  --shadow-md: 0 2px 8px rgba(16, 24, 40, 0.08), 0 4px 12px rgba(16, 24, 40, 0.06);
  --shadow-lg: 0 8px 24px rgba(16, 24, 40, 0.12), 0 16px 32px rgba(16, 24, 40, 0.08);

  /* Transitions */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
  --easing-standard: cubic-bezier(0.2, 0, 0, 1);

  /* Layout */
  --container-max: 1200px;
  --container-pad: clamp(16px, 4vw, 32px);

  /* Focus ring */
  --focus-ring: 0 0 0 3px hsl(207 45% 62% / 0.35);
}

/* ===================================
   Reset / Normalize
   =================================== */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }

body, h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }

/* Forms inherit fonts/colors */
input, button, textarea, select { font: inherit; color: inherit; }

/* Remove list styles on lists that explicitly opt-in with role="list" */
ul[role="list"], ol[role="list"] { list-style: none; padding: 0; margin: 0; }

/* Smooth fonts */
body { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; }

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ===================================
   Base
   =================================== */
body {
  min-height: 100dvh;
  background-color: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--fs-300);
  line-height: var(--lh-relaxed);
}

main { display: block; }

p { max-width: 65ch; }

h1, h2, h3, h4, h5, h6 {
  color: var(--color-heading);
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: var(--lh-tight);
  letter-spacing: -0.01em;
  text-wrap: balance;
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
}

h1 { font-size: clamp(2rem, 2vw + 1.5rem, var(--fs-900)); }
h2 { font-size: clamp(1.75rem, 1.6vw + 1.2rem, var(--fs-800)); }
h3 { font-size: clamp(1.5rem, 1vw + 1rem, var(--fs-700)); }
h4 { font-size: var(--fs-600); }
h5 { font-size: var(--fs-500); }
h6 { font-size: var(--fs-400); }

p + p { margin-top: var(--space-4); }

a {
  color: var(--color-primary);
  text-decoration: none;
  text-underline-offset: 2px;
  transition: color var(--duration-normal) var(--easing-standard);
}

a:hover { text-decoration: underline; }

a:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

hr { border: 0; border-top: 1px solid var(--gray-200); margin: var(--space-8) 0; }

/* Responsive typography for buttons/inputs */
small { font-size: var(--fs-200); }

/* ===================================
   Utilities
   =================================== */
.container { max-width: var(--container-max); margin-inline: auto; padding-inline: var(--container-pad); }

.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }

.gap-xs { gap: var(--space-3); }
.gap-sm { gap: var(--space-5); }
.gap-md { gap: var(--space-7); }
.gap-lg { gap: var(--space-9); }

.grid-auto-fit { grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); }

.hidden { display: none !important; }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

/* ===================================
   Components
   =================================== */
/* Button */
.btn {
  --_bg: var(--color-surface);
  --_fg: var(--color-text);
  --_bd: var(--gray-300);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: calc(var(--space-5) - 1px) var(--space-7);
  background-color: var(--_bg);
  color: var(--_fg);
  border: 1px solid var(--_bd);
  border-radius: var(--radius-md);
  line-height: 1.2;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--duration-normal) var(--easing-standard),
              color var(--duration-normal) var(--easing-standard),
              border-color var(--duration-normal) var(--easing-standard),
              box-shadow var(--duration-fast) var(--easing-standard),
              transform var(--duration-fast) var(--easing-standard);
}

.btn:hover { background-color: var(--gray-100); border-color: var(--gray-300); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; box-shadow: var(--focus-ring); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.6; cursor: not-allowed; pointer-events: none; }

/* Primary button */
.btn-primary {
  --_bg: var(--color-primary);
  --_fg: #fff;
  --_bd: transparent;
  background-color: var(--_bg);
  color: var(--_fg);
  border-color: var(--_bd);
}

.btn-primary:hover { background-color: var(--color-primary-600); }
.btn-primary:active { background-color: var(--color-primary-700); }

/* Accent button (terracotta) */
.btn-accent {
  --_bg: var(--color-accent);
  --_fg: #fff;
  --_bd: transparent;
  background-color: var(--_bg);
  color: var(--_fg);
  border-color: var(--_bd);
}

.btn-accent:hover { background-color: var(--color-accent-600); }

/* Ghost button */
.btn-ghost {
  --_bg: transparent;
  --_fg: var(--color-primary);
  --_bd: transparent;
  background-color: transparent;
  color: var(--_fg);
  border-color: var(--_bd);
}

.btn-ghost:hover { background-color: hsl(207 45% 62% / 0.08); }

/* Inputs */
.input, input[type="text"], input[type="email"], input[type="password"], input[type="search"], input[type="tel"], input[type="url"], input[type="number"], select, textarea {
  width: 100%;
  padding: var(--space-5) var(--space-6);
  background-color: var(--color-surface);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  color: var(--color-text);
  line-height: var(--lh-normal);
  transition: border-color var(--duration-normal) var(--easing-standard), box-shadow var(--duration-fast) var(--easing-standard), background-color var(--duration-normal) var(--easing-standard);
}

.input::placeholder,
input::placeholder,
textarea::placeholder { color: var(--gray-500); }

.input:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; box-shadow: var(--focus-ring); border-color: var(--color-primary); }

input:disabled, select:disabled, textarea:disabled { background-color: var(--gray-50); color: var(--gray-500); cursor: not-allowed; }

input[aria-invalid="true"], .input.is-invalid, select[aria-invalid="true"], textarea[aria-invalid="true"] { border-color: var(--color-danger); box-shadow: 0 0 0 3px hsl(0 65% 48% / 0.15); }

/* Card */
.card {
  background-color: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--duration-normal) var(--easing-standard), transform var(--duration-fast) var(--easing-standard);
}

.card:hover { box-shadow: var(--shadow-md); }

/* ===================================
   Header & Footer styles
   =================================== */
/* Skip link for accessibility */
.skip-link { position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.skip-link:focus { left: 16px; top: 16px; width: auto; height: auto; background: #fff; border: 1px solid var(--gray-300); padding: var(--space-4) var(--space-6); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: color-mix(in oklab, var(--color-surface) 88%, white); border-bottom: 1px solid var(--gray-200); backdrop-filter: saturate(120%) blur(6px); }
.header-inner { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: var(--space-5); min-height: 64px; }
 .brand-link { font-weight: 700; font-family: var(--font-serif); font-size: 1.25rem; color: var(--color-heading); }

/* Brand logo image sizing (desktop + mobile) */
.brand-link img { width: 120px; height: auto; display: block; }
@media (max-width: 640px) {
  .brand-link img { width: 80px; }
}
.menu-toggle { display: none; }
.menu-toggle { appearance: none; border: 1px solid var(--gray-300); background: var(--color-surface); color: var(--color-text); border-radius: var(--radius-md); padding: var(--space-4) var(--space-6); cursor: pointer; }
.menu-icon { width: 20px; height: 14px; display: inline-block; margin-right: 8px; background:
  linear-gradient(currentColor, currentColor) 0 0/100% 2px no-repeat,
  linear-gradient(currentColor, currentColor) 0 50%/100% 2px no-repeat,
  linear-gradient(currentColor, currentColor) 0 100%/100% 2px no-repeat; }
.primary-nav { justify-self: end; }
.nav-list { display: flex; gap: var(--space-7); align-items: center; }
.nav-list a { color: var(--color-heading); font-weight: 600; }
.nav-list a:hover { color: var(--color-primary); text-decoration: none; }

@media (max-width: 860px) {
  .header-inner { grid-template-columns: auto 1fr auto; }
  .menu-toggle { display: inline-flex; align-items: center; justify-content: center; }

  /* Make the primary nav dropdown full-width and anchored below the header */
  .site-header { position: sticky; top: 0; z-index: 60; }

  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    width: 100%;
    box-sizing: border-box;
    background: var(--color-surface);
    border-top: 1px solid var(--gray-200);
    border-bottom: 1px solid var(--gray-200);
    transform: translateY(-10%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--duration-normal) var(--easing-standard), opacity var(--duration-fast) var(--easing-standard);
    padding: 0; /* avoid extra horizontal gaps */
    z-index: 55;
  }

  .primary-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  /* Inner list should keep page gutters while the dropdown touches edges */
  .primary-nav .nav-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
    align-items: stretch;
    padding: var(--space-6) var(--container-pad);
    margin: 0;
    max-height: calc(100vh - 64px);
    overflow: auto;
    -webkit-overflow-scrolling: touch;
  }

  .primary-nav .nav-list a { display: block; width: 100%; padding: calc(var(--space-3) + 2px) 0; }
}

/* Footer */
.site-footer { background: var(--color-surface); border-top: 1px solid var(--gray-200); margin-top: var(--space-12); }
.footer-grid { display: grid; grid-template-columns: 1.1fr 1fr 1fr; gap: var(--space-10); padding-top: var(--space-10); padding-bottom: var(--space-10); }
.footer-title { margin: 0 0 var(--space-4) 0; font-size: var(--fs-500); }
.footer-links { display: grid; gap: 8px; }
.footer-links a { color: var(--color-heading); }
.footer-links a:hover { color: var(--color-primary); text-decoration: none; }
.footer-bottom { border-top: 1px solid var(--gray-200); padding: var(--space-6) 0; color: var(--gray-600); }
@media (max-width: 980px) { .footer-grid { grid-template-columns: 1fr; } }

/* Cookie banner (consent) */
.cookie-banner { position: fixed; left: 0; right: 0; bottom: 0; z-index: 100; background: var(--color-surface); border-top: 1px solid var(--gray-200); box-shadow: 0 -8px 24px rgba(16, 24, 40, 0.06); }
.cookie-inner { display: grid; grid-template-columns: 1fr auto; gap: var(--space-6); padding: var(--space-6) var(--container-pad); align-items: center; }
.cookie-inner p { margin: 0; color: var(--gray-700); }
.cookie-actions { display: flex; gap: var(--space-4); }
@media (max-width: 720px) { .cookie-inner { grid-template-columns: 1fr; } .cookie-actions { justify-content: start; } }

/* ===================================
   Accessibility & Misc
   =================================== */
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

/* Media elements should not exceed container */
figure { margin: 0; }

/* Image frame utility for content sections */
.image-frame { max-width: 520px; margin-top: var(--space-6); margin-bottom: var(--space-6); }
.image-frame img { width: 100%; height: auto; display: block; border-radius: 8px; box-shadow: var(--shadow-sm); }
@media (max-width: 640px) { .image-frame { max-width: 320px; margin-inline: auto; } }

/* Link styles within cards/lists can inherit better */
.card a { color: inherit; text-decoration-color: hsl(210 10% 18% / 0.3); }
.card a:hover { color: var(--color-primary); text-decoration: underline; }

/* Subtle selection color */
::selection { background: hsl(207 45% 62% / 0.25); color: inherit; }