/* ============================================================
   4-h.me  ·  田野手記 Field Journal  v1
   ============================================================ */

:root {
  --ink: #1F2E1F;
  --moss: #3E5C3A;
  --moss-deep: #2A4129;
  --marigold: #D8943B;
  --tomato: #C44E36;
  --sky: #6E9DB8;
  --cream: #F8F2E4;
  --cream-deep: #F0E9D7;
  --sage-soft: #DDE5D4;
  --night: #1A2218;
}

.paper-bg {
  background-color: var(--cream);
  background-image:
    radial-gradient(at 12% 18%, rgba(216,148,59,0.06) 0px, transparent 50%),
    radial-gradient(at 88% 72%, rgba(110,157,184,0.06) 0px, transparent 55%),
    radial-gradient(at 64% 92%, rgba(196,78,54,0.04) 0px, transparent 50%),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' seed='5'/><feColorMatrix values='0 0 0 0 0.12  0 0 0 0 0.18  0 0 0 0 0.12  0 0 0 0.04 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  background-attachment: fixed, fixed, fixed, fixed;
}
.dark .paper-bg {
  background-color: var(--night);
  background-image:
    radial-gradient(at 14% 20%, rgba(216,148,59,0.10) 0px, transparent 50%),
    radial-gradient(at 86% 70%, rgba(110,157,184,0.08) 0px, transparent 55%),
    radial-gradient(at 64% 92%, rgba(196,78,54,0.07) 0px, transparent 50%),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' seed='5'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 0.03 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

.field-rule {
  position: relative;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--moss) 0 6px, transparent 6px 12px);
  opacity: 0.4;
}
.dark .field-rule {
  background: repeating-linear-gradient(90deg, var(--sage-soft) 0 6px, transparent 6px 12px);
  opacity: 0.3;
}

.field-label {
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.32em;
  font-size: 0.6875rem;
  color: var(--moss);
  font-weight: 600;
}
.dark .field-label { color: var(--sage-soft); }

.stamp {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  padding: 0.25rem 0.75rem;
  border: 1.5px solid var(--moss);
  color: var(--moss);
  background: transparent;
  border-radius: 2px;
  text-transform: uppercase;
  transform: rotate(-2deg);
  box-shadow: inset 0 0 0 2px var(--cream);
}
.dark .stamp {
  border-color: var(--sage-soft);
  color: var(--sage-soft);
  box-shadow: inset 0 0 0 2px var(--night);
}
.stamp-tomato { color: var(--tomato); border-color: var(--tomato); transform: rotate(2deg); }
.stamp-marigold { color: var(--marigold); border-color: var(--marigold); }

.ink-underline {
  display: inline-block;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 12' preserveAspectRatio='none'><path d='M2 6 Q 50 1, 100 5 T 198 6' stroke='%233E5C3A' stroke-width='3' stroke-linecap='round' fill='none' opacity='0.7'/></svg>");
  background-repeat: no-repeat;
  background-position: 0 95%;
  background-size: 100% 0.5em;
  padding-bottom: 0.15em;
}
.dark .ink-underline {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 12' preserveAspectRatio='none'><path d='M2 6 Q 50 1, 100 5 T 198 6' stroke='%23DDE5D4' stroke-width='3' stroke-linecap='round' fill='none' opacity='0.7'/></svg>");
}
.ink-underline-marigold {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 12' preserveAspectRatio='none'><path d='M2 6 Q 50 1, 100 5 T 198 6' stroke='%23D8943B' stroke-width='3' stroke-linecap='round' fill='none' opacity='0.85'/></svg>");
}

.sprite { position: absolute; pointer-events: none; z-index: 0; opacity: 0.5; }
.dark .sprite { opacity: 0.35; }

.polaroid {
  background: var(--cream);
  border: 1px solid rgba(31,46,31,0.08);
  box-shadow: 0 1px 0 rgba(31,46,31,0.04), 0 8px 28px rgba(31,46,31,0.08);
  padding: 1.5rem 1.5rem 1.75rem;
  position: relative;
}
.dark .polaroid {
  background: #232c20;
  border-color: rgba(255,255,255,0.05);
  box-shadow: 0 1px 0 rgba(0,0,0,0.2), 0 8px 28px rgba(0,0,0,0.4);
}
.polaroid-tilt-l { transform: rotate(-0.6deg); }
.polaroid-tilt-r { transform: rotate(0.6deg); }

.washi {
  position: absolute;
  width: 60px;
  height: 20px;
  background: repeating-linear-gradient(45deg, rgba(216,148,59,0.55) 0 6px, rgba(216,148,59,0.75) 6px 12px);
  border-radius: 1px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.08);
  top: -10px;
  left: 50%;
  transform: translateX(-50%) rotate(-3deg);
}

.btn-ink {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Fraunces', 'Noto Serif TC', serif;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.7rem 1.5rem;
  background: var(--ink);
  color: var(--cream);
  border-radius: 999px;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  box-shadow: 0 4px 0 -1px var(--moss-deep);
}
.btn-ink:hover { transform: translateY(-2px); box-shadow: 0 6px 0 -1px var(--moss-deep); }
.btn-ink:active { transform: translateY(1px); box-shadow: 0 2px 0 -1px var(--moss-deep); }
.btn-ink:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Atkinson Hyperlegible', 'Noto Sans TC', sans-serif;
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--ink);
  border-radius: 999px;
  transition: all 0.18s ease;
}
.dark .btn-ghost { color: var(--cream); border-color: var(--cream); }
.btn-ghost:hover { background: var(--ink); color: var(--cream); }
.dark .btn-ghost:hover { background: var(--cream); color: var(--ink); }

.field-input {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.95rem;
  background: transparent;
  color: var(--ink);
  border: none;
  border-bottom: 2px solid var(--ink);
  padding: 0.6rem 0.25rem;
  width: 100%;
  transition: border-color 0.2s ease;
}
.dark .field-input { color: var(--cream); border-bottom-color: var(--cream); }
.field-input::placeholder { color: rgba(31,46,31,0.4); }
.dark .field-input::placeholder { color: rgba(248,242,228,0.4); }
.field-input:focus { outline: none; border-bottom-color: var(--marigold); }

.field-input-boxed {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.875rem;
  background: rgba(255,255,255,0.5);
  color: var(--ink);
  border: 1.5px dashed var(--moss);
  padding: 0.6rem 0.875rem;
  border-radius: 6px;
}
.dark .field-input-boxed { background: rgba(255,255,255,0.04); color: var(--cream); border-color: var(--sage-soft); }
.field-input-boxed:focus { outline: none; border-style: solid; border-color: var(--marigold); }

.index-mark {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  color: var(--tomato);
  border: 1.5px solid var(--tomato);
  padding: 0.2rem 0.65rem;
  border-radius: 2px;
  text-transform: uppercase;
  display: inline-block;
  transform: rotate(-3deg);
  background: var(--cream);
}
.dark .index-mark { background: var(--night); }

.reveal { opacity: 0; transform: translateY(12px); animation: revealIn 0.6s cubic-bezier(0.22,1,0.36,1) forwards; }
.reveal-1 { animation-delay: 0.05s; }
.reveal-2 { animation-delay: 0.18s; }
.reveal-3 { animation-delay: 0.32s; }
.reveal-4 { animation-delay: 0.46s; }
.reveal-5 { animation-delay: 0.60s; }
.reveal-6 { animation-delay: 0.74s; }
@keyframes revealIn { to { opacity: 1; transform: translateY(0); } }

/* Result card entrance — runs each time x-show flips it on */
.card-enter { animation: cardEnter 0.5s cubic-bezier(0.22,1,0.36,1) both; }
@keyframes cardEnter {
  0%   { opacity: 0; transform: translateY(18px) scale(0.98) rotate(0.6deg); }
  100% { opacity: 1; transform: translateY(0) scale(1) rotate(0.6deg); }
}

[x-cloak] { display: none !important; }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--moss); border-radius: 4px; border: 2px solid var(--cream); }
.dark ::-webkit-scrollbar-thumb { border-color: var(--night); }

input:-webkit-autofill { -webkit-box-shadow: 0 0 0 30px var(--cream) inset; -webkit-text-fill-color: var(--ink); }
.dark input:-webkit-autofill { -webkit-box-shadow: 0 0 0 30px var(--night) inset; -webkit-text-fill-color: var(--cream); }

@keyframes shake { 0%,100%{transform:translateX(0)} 25%{transform:translateX(-6px)} 75%{transform:translateX(6px)} }
.shake { animation: shake 0.3s ease-in-out 1; }

::selection { background: var(--marigold); color: var(--ink); }
.dark ::selection { background: var(--marigold); color: var(--night); }

body { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

/* Prevent decorative sprites / blobs from causing sideways scroll on mobile */
html, body { overflow-x: hidden; }

/* Keyboard focus: visible outline on all interactive elements */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--marigold);
  outline-offset: 2px;
  border-radius: 3px;
}

/* Respect users who prefer reduced motion: kill transforms/animations,
   force content visible so nothing stays hidden. */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal,
  .card-enter {
    opacity: 1 !important;
    transform: none !important;
    animation: none !important;
  }
}