/* =========================================================
   Arcana Calculator - style.css
   Dark (default) + Light theme, tere diye green design tokens ke sath
   ========================================================= */

/* ---------- 1. Design tokens ---------- */
:root {
  --bg-primary: #050f0a;
  --bg-secondary: #0a1a10;
  --bg-card: #0d2018;
  --bg-card-hover: #123023;

  --green-primary: #00e676;
  --green-secondary: #00c853;
  --green-dim: #1a4d35;
  --green-glow: rgba(0, 230, 118, 0.12);

  --text-primary: #e8f5e9;
  --text-secondary: #81c784;
  --text-muted: #4caf50;

  --btn-text: #04140b;
  --header-bg: rgba(5, 15, 10, 0.88);

  --border: rgba(0, 230, 118, 0.18);
  --shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
  --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.35);

  --white: #ffffff;
  --danger: #ff5252;
  --star: #ffc107;

  --radius: 20px;
  --radius-sm: 12px;
  --radius-lg: 28px;
  --radius-pill: 999px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  --container-w: 1200px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.15s ease;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  color-scheme: dark;
}

[data-theme="light"] {
  --bg-primary: #f5faf7;
  --bg-secondary: #eaf4ee;
  --bg-card: #ffffff;
  --bg-card-hover: #f2f9f4;

  --green-primary: #00a152;
  --green-secondary: #008f47;
  --green-dim: #d7ecdf;
  --green-glow: rgba(0, 200, 83, 0.10);

  --text-primary: #0d2018;
  --text-secondary: #1a4d35;
  --text-muted: #2e7d52;

  --btn-text: #ffffff;
  --header-bg: rgba(245, 250, 247, 0.9);

  --border: rgba(0, 180, 90, 0.2);
  --shadow: 0 4px 30px rgba(13, 32, 24, 0.08);
  --shadow-sm: 0 2px 8px rgba(13, 32, 24, 0.06);

  color-scheme: light;
}

/* ---------- 2. Reset + base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-primary);
  background-image:
    radial-gradient(900px 500px at 15% -5%, var(--green-glow), transparent 60%),
    radial-gradient(800px 500px at 100% 30%, var(--green-glow), transparent 60%);
  background-attachment: fixed;
  overflow-x: hidden;
  transition: background-color var(--transition), color var(--transition);
}
body.modal-open { overflow: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--green-primary); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--green-secondary); text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 var(--space-3); color: var(--text-primary); }
p { margin: 0 0 var(--space-4); }
ul, ol { margin: 0 0 var(--space-4); padding-left: 22px; }
li { margin-bottom: 6px; }
::selection { background: var(--green-primary); color: var(--btn-text); }
[hidden] { display: none !important; }
section[id] { scroll-margin-top: 84px; }

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

.wrap { width: 100%; max-width: var(--container-w); margin: 0 auto; padding: 0 var(--space-4); }
.center { text-align: center; }

.skip-link {
  position: absolute; left: -9999px; top: 8px; z-index: 999;
  background: var(--green-primary); color: var(--btn-text);
  padding: 8px 16px; border-radius: var(--radius-sm); font-weight: 700;
}
.skip-link:focus { left: 8px; text-decoration: none; }

/* ---------- 3. Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border: 1px solid transparent; border-radius: var(--radius-pill);
  font: inherit; font-weight: 700; font-size: 15px; line-height: 1.2; cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition), background var(--transition), border-color var(--transition);
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-primary {
  background: linear-gradient(135deg, var(--green-primary), var(--green-secondary));
  color: var(--btn-text);
  box-shadow: 0 6px 20px var(--green-glow);
}
.btn-primary:hover { color: var(--btn-text); box-shadow: 0 8px 28px rgba(0, 230, 118, 0.3); }
.btn-ghost { background: transparent; color: var(--green-primary); border-color: var(--border); }
.btn-ghost:hover { background: var(--green-glow); color: var(--green-primary); border-color: var(--green-primary); }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .6; cursor: not-allowed; transform: none; }

/* ---------- 4. Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--header-bg);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.h-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); min-height: 66px; }

.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--text-primary); font-weight: 800; font-size: 20px; letter-spacing: -.3px; }
.logo:hover { text-decoration: none; color: var(--text-primary); }
.logo-ico { font-size: 26px; line-height: 1; filter: drop-shadow(0 0 8px var(--green-glow)); }
.logo-txt em { font-style: normal; color: var(--green-primary); }

.site-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 4px; }
.site-nav li { margin: 0; }
.site-nav a {
  display: block; padding: 9px 15px; border-radius: var(--radius-pill);
  color: var(--text-secondary); font-weight: 600; font-size: 15px;
}
.site-nav a:hover { background: var(--green-glow); color: var(--green-primary); text-decoration: none; }
.site-nav a.active { background: var(--green-glow); color: var(--green-primary); }

.h-actions { display: flex; align-items: center; gap: 8px; }
.theme-toggle {
  width: 42px; height: 42px; border-radius: 50%; cursor: pointer;
  background: var(--bg-card); border: 1px solid var(--border);
  font-size: 18px; line-height: 1; display: grid; place-items: center;
  transition: background var(--transition), transform var(--transition-fast);
}
.theme-toggle:hover { background: var(--bg-card-hover); transform: rotate(15deg); }
[data-theme="dark"] .ico-moon { display: none; }
[data-theme="light"] .ico-sun { display: none; }

.menu-toggle {
  display: none; width: 42px; height: 42px; border-radius: 12px; cursor: pointer;
  background: var(--bg-card); border: 1px solid var(--border);
  flex-direction: column; align-items: center; justify-content: center; gap: 5px; padding: 0;
}
.menu-toggle span { display: block; width: 20px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: transform var(--transition), opacity var(--transition); }
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 5. Hero ---------- */
.hero { padding: var(--space-8) 0 var(--space-6); text-align: center; }
.hero-inner { max-width: 860px; }
.hero-badge {
  display: inline-block; margin-bottom: var(--space-4); padding: 7px 16px;
  background: var(--green-glow); border: 1px solid var(--border); border-radius: var(--radius-pill);
  color: var(--green-primary); font-size: 14px; font-weight: 700;
}
.hero h1 { font-size: clamp(30px, 5.4vw, 52px); font-weight: 800; letter-spacing: -1px; margin-bottom: var(--space-4); }
.grad {
  background: linear-gradient(135deg, var(--green-primary), var(--star));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero-lead { font-size: 18px; color: var(--text-primary); }
.hero-sub { color: var(--text-secondary); }
.hero-chips { list-style: none; padding: 0; margin: var(--space-5) 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.hero-chips li { margin: 0; padding: 7px 14px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-pill); font-size: 14px; font-weight: 600; color: var(--text-secondary); }
.hero-btns { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }

/* ---------- 6. Tool ---------- */
.tool-section { padding: var(--space-5) 0 var(--space-8); }
.tool-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: var(--space-6); box-shadow: var(--shadow);
}
.tool-head { text-align: center; margin-bottom: var(--space-5); }
.tool-head h2 { font-size: clamp(24px, 3.4vw, 32px); margin-bottom: 6px; }
.tool-head p { color: var(--text-secondary); margin: 0; }

.tool-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: var(--space-6); align-items: start; }

.field { margin: 0 0 var(--space-4); padding: 0; border: 0; min-width: 0; }
.field label, .field legend { display: block; margin-bottom: 7px; font-weight: 700; font-size: 14px; color: var(--text-primary); padding: 0; }
.opt { color: var(--text-muted); font-weight: 500; }
.field input[type="text"], .field input[type="date"], .field select {
  width: 100%; padding: 13px 15px; font: inherit; font-size: 16px;
  color: var(--text-primary); background: var(--bg-secondary);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.field input:focus, .field select:focus {
  outline: none; border-color: var(--green-primary); box-shadow: 0 0 0 3px var(--green-glow);
}
.field input::placeholder { color: var(--text-muted); opacity: .7; }

.method { display: grid; gap: 10px; }
.method-opt {
  display: flex; gap: 12px; align-items: flex-start; margin: 0 !important; cursor: pointer;
  padding: 12px 14px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg-secondary); transition: border-color var(--transition-fast), background var(--transition-fast);
}
.method-opt input { margin-top: 5px; accent-color: var(--green-primary); flex-shrink: 0; }
.method-opt span { display: block; }
.method-opt b { display: block; font-size: 15px; color: var(--text-primary); }
.method-opt small { display: block; color: var(--text-secondary); font-size: 13px; line-height: 1.4; margin-top: 2px; }
.method-opt:hover { border-color: var(--green-primary); }
.method-opt:has(input:checked) { border-color: var(--green-primary); background: var(--green-glow); }
.method-note { font-size: 13px; color: var(--text-muted); margin: 4px 0 0; }

.form-error {
  margin: 0 0 var(--space-3); padding: 10px 14px; border-radius: var(--radius-sm);
  background: rgba(255, 82, 82, .12); border: 1px solid var(--danger); color: var(--danger); font-size: 14px; font-weight: 600;
}
.form-privacy { margin: var(--space-3) 0 0; font-size: 13px; color: var(--text-muted); text-align: center; }

/* Preview */
.tool-preview { text-align: center; padding: var(--space-4); background: var(--bg-secondary); border: 1px dashed var(--border); border-radius: var(--radius); }
.preview-flip { width: 100%; max-width: 230px; margin: 0 auto var(--space-3); perspective: 900px; }
.preview-flip img { width: 100%; height: auto; border-radius: 10px; box-shadow: 0 10px 34px rgba(0, 0, 0, .45), 0 0 0 1px var(--border); }
.preview-text { margin: 0; font-weight: 700; color: var(--text-secondary); }
.preview-flip.is-revealing img { animation: cardReveal .8s var(--transition) both; }
@keyframes cardReveal {
  0%   { transform: rotateY(90deg) scale(.92); opacity: .4; }
  100% { transform: rotateY(0) scale(1); opacity: 1; }
}

/* ---------- 7. Result pop-up ---------- */
.modal { position: fixed; inset: 0; z-index: 300; overflow-y: auto; -webkit-overflow-scrolling: touch; padding: var(--space-5) var(--space-3); }
.modal-backdrop { position: fixed; inset: 0; background: rgba(2, 8, 5, .82); }
.modal-box {
  position: relative; z-index: 1; width: 100%; max-width: 1000px; margin: 0 auto;
  background: var(--bg-primary); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: var(--space-5); box-shadow: var(--shadow);
  animation: modalIn .3s var(--transition) both;
}
@keyframes modalIn { from { opacity: 0; transform: translateY(18px) scale(.98); } to { opacity: 1; transform: none; } }
.modal-close {
  position: absolute; top: 14px; right: 14px; z-index: 3; width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid var(--border); background: var(--bg-card); color: var(--text-primary); font-size: 16px; cursor: pointer;
}
.modal-close:hover { background: var(--bg-card-hover); color: var(--green-primary); }

/* Ye hissa image + PDF me jata hai - isme blur/filter wali cheez mat lagana */
.res-capture {
  background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: var(--space-5); margin-top: var(--space-6);
}
.res-top { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-3); margin-bottom: var(--space-4); }
.res-who { margin: 0; font-size: 20px; font-weight: 800; color: var(--text-primary); }
.res-sub { margin: 2px 0 0; font-size: 14px; color: var(--text-secondary); }
.res-brand { font-weight: 800; color: var(--green-primary); font-size: 15px; white-space: nowrap; }

.res-grid { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: var(--space-5); align-items: start; }
.res-cardbox { text-align: center; }
.res-cardbox > img { width: 100%; max-width: 250px; margin: 0 auto 12px; border-radius: 10px; box-shadow: 0 10px 30px rgba(0, 0, 0, .45), 0 0 0 1px var(--border); }
.res-title { margin: 0 0 var(--space-3); font-size: 22px; color: var(--green-primary); }
.res-second { display: flex; align-items: center; gap: 12px; text-align: left; padding: 10px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-sm); }
.res-second img { width: 56px; height: auto; border-radius: 5px; flex-shrink: 0; }
.res-second p { margin: 0; font-size: 13px; line-height: 1.45; color: var(--text-secondary); }

.res-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: var(--space-4); }
.chip {
  display: inline-block; padding: 6px 13px; border-radius: var(--radius-pill);
  background: var(--green-glow); border: 1px solid var(--border);
  font-size: 13px; font-weight: 700; color: var(--text-primary);
}
.chip b { color: var(--green-primary); }

.res-block { margin-bottom: var(--space-3); padding: 14px 16px; background: var(--bg-secondary); border: 1px solid var(--border); border-left-width: 4px; border-radius: var(--radius-sm); }
.res-block h4 { margin: 0 0 4px; font-size: 13px; text-transform: uppercase; letter-spacing: 1px; }
.res-block p { margin: 0; font-size: 15px; }
.res-meaning  { border-left-color: var(--green-primary); }
.res-meaning h4 { color: var(--green-primary); }
.res-guidance { border-left-color: var(--star); }
.res-guidance h4 { color: var(--star); }
.res-shadow   { border-left-color: var(--danger); }
.res-shadow h4 { color: var(--danger); }
.res-meta { margin: var(--space-3) 0 0; font-size: 13px; color: var(--text-muted); }

.res-extra { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: var(--space-4); margin-top: var(--space-5); }
.res-steps-box, .res-chart-box { padding: 16px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-sm); }
.res-steps-box h4, .res-chart-box h4 { margin: 0 0 var(--space-3); font-size: 15px; }
.res-chart-box h4 small { color: var(--text-muted); font-weight: 600; margin-left: 6px; }
.res-steps { margin: 0; padding-left: 20px; font-size: 14px; color: var(--text-secondary); }
.res-steps li { margin-bottom: 6px; }
.res-steps b { color: var(--text-primary); }

/* Graph (JS yahi classes banayega: .bar-col > .bar-val + .bar-track > .bar-fill + .bar-lbl) */
.res-chart { display: flex; align-items: stretch; gap: 6px; height: 190px; }
.bar-col { flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: center; }
.bar-val { font-size: 12px; font-weight: 800; color: var(--text-primary); height: 18px; line-height: 18px; }
.bar-track { flex: 1; width: 100%; display: flex; align-items: flex-end; }
.bar-fill { width: 100%; min-height: 4px; border-radius: 6px 6px 0 0; background: linear-gradient(180deg, var(--green-primary), var(--green-secondary)); }
.bar-col.is-peak .bar-fill { background: linear-gradient(180deg, var(--star), #ff9800); }
.bar-lbl { font-size: 11px; color: var(--text-muted); height: 18px; line-height: 18px; }
.res-chart-note { margin: var(--space-3) 0 0; font-size: 12px; color: var(--text-muted); }

.res-credit { margin: var(--space-5) 0 0; padding-top: var(--space-4); border-top: 1px solid var(--border); text-align: center; font-size: 14px; color: var(--text-secondary); }
.res-credit a { font-weight: 700; }

/* Download / share */
.res-actions { margin-top: var(--space-5); padding: var(--space-5); text-align: center; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); }
.res-actions h4 { margin-bottom: var(--space-3); font-size: 18px; }
.res-btns { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.res-msg { margin: var(--space-3) 0 0; font-size: 14px; font-weight: 600; color: var(--green-primary); }

/* Coffee box */
.coffee-box {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
  margin-top: var(--space-4); padding: var(--space-4) var(--space-5);
  background: var(--green-glow); border: 1px solid var(--border); border-radius: var(--radius);
}
.coffee-box h4 { margin: 0 0 4px; font-size: 16px; }
.coffee-box p { margin: 0; font-size: 13px; color: var(--text-secondary); }
.coffee-box .btn { flex-shrink: 0; }

/* ---------- 8. Sections (How to use / Article / FAQ) ---------- */
.section { padding: var(--space-8) 0; }
.section-alt { background: var(--bg-secondary); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.sec-title { text-align: center; font-size: clamp(26px, 3.6vw, 36px); margin-bottom: var(--space-3); }
.sec-lead { text-align: center; max-width: 640px; margin: 0 auto var(--space-6); color: var(--text-secondary); }

.howto-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-4); }
.howto-card {
  position: relative; padding: var(--space-5); padding-top: var(--space-6);
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  transition: transform var(--transition), background var(--transition), border-color var(--transition);
}
.howto-card:hover { transform: translateY(-4px); background: var(--bg-card-hover); border-color: var(--green-primary); }
.howto-card h3 { font-size: 18px; margin-bottom: 8px; }
.howto-card h3 small { color: var(--text-muted); font-weight: 500; font-size: 13px; }
.howto-card p { margin: 0; font-size: 15px; color: var(--text-secondary); }
.howto-num {
  position: absolute; top: -16px; left: var(--space-5); width: 36px; height: 36px; border-radius: 50%;
  display: grid; place-items: center; font-weight: 800;
  background: linear-gradient(135deg, var(--green-primary), var(--green-secondary)); color: var(--btn-text);
  box-shadow: 0 4px 14px var(--green-glow);
}

/* Article */
.article { max-width: 820px; }
.article h2 { font-size: clamp(24px, 3.2vw, 30px); margin: var(--space-7) 0 var(--space-3); padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.article h2:first-child { margin-top: 0; }
.article h3 { font-size: 20px; margin: var(--space-5) 0 var(--space-2); color: var(--green-primary); }
.article p, .article li { font-size: 17px; color: var(--text-primary); }
.article li b, .article p b { color: var(--green-primary); }
.article em { color: var(--text-secondary); }

.table-wrap { overflow-x: auto; margin: var(--space-4) 0 var(--space-5); border: 1px solid var(--border); border-radius: var(--radius-sm); -webkit-overflow-scrolling: touch; }
.cards-table { width: 100%; border-collapse: collapse; min-width: 480px; background: var(--bg-card); }
.cards-table th, .cards-table td { padding: 11px 16px; text-align: left; border-bottom: 1px solid var(--border); font-size: 15px; }
.cards-table th { background: var(--bg-secondary); color: var(--green-primary); font-size: 13px; text-transform: uppercase; letter-spacing: .8px; }
.cards-table td:first-child { color: var(--text-muted); font-family: ui-monospace, Menlo, Consolas, monospace; white-space: nowrap; }
.cards-table td:nth-child(2) { font-weight: 700; white-space: nowrap; }
.cards-table td:last-child { color: var(--text-secondary); }
.cards-table tbody tr:last-child td { border-bottom: 0; }
.cards-table tbody tr:hover { background: var(--bg-card-hover); }

/* FAQ (+ / - accordion) */
.faq-wrap { max-width: 820px; }
.faq-list { margin-top: var(--space-5); display: grid; gap: 10px; }
.faq-item { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); transition: border-color var(--transition), background var(--transition); }
.faq-item[open] { border-color: var(--green-primary); background: var(--bg-card-hover); }
.faq-item summary {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-3);
  padding: 16px 20px; cursor: pointer; list-style: none; font-weight: 700; font-size: 16px; color: var(--text-primary);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--green-primary); }
.faq-ico { position: relative; width: 22px; height: 22px; flex-shrink: 0; border-radius: 50%; background: var(--green-glow); border: 1px solid var(--border); }
.faq-ico::before, .faq-ico::after { content: ""; position: absolute; left: 50%; top: 50%; background: var(--green-primary); border-radius: 2px; transform: translate(-50%, -50%); transition: transform var(--transition), opacity var(--transition); }
.faq-ico::before { width: 10px; height: 2px; }
.faq-ico::after  { width: 2px; height: 10px; }
.faq-item[open] .faq-ico::after { transform: translate(-50%, -50%) rotate(90deg); opacity: 0; }
.faq-a { padding: 0 20px 18px; }
.faq-a p { margin: 0; color: var(--text-secondary); font-size: 16px; }

.cta-box { margin-top: var(--space-7); padding: var(--space-6); text-align: center; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.cta-box h2 { font-size: 26px; }
.cta-box p { color: var(--text-secondary); }

/* ---------- 9. Footer ---------- */
.site-footer { margin-top: 0; padding: var(--space-7) 0 var(--space-5); background: var(--bg-secondary); border-top: 1px solid var(--border); }
.f-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: var(--space-6); }
.f-grid p { font-size: 14px; color: var(--text-secondary); margin: var(--space-3) 0 0; }
.f-col h4 { font-size: 15px; text-transform: uppercase; letter-spacing: 1px; color: var(--green-primary); margin-bottom: var(--space-3); }
.f-col ul { list-style: none; margin: 0; padding: 0; }
.f-col li { margin-bottom: 8px; }
.f-col a { color: var(--text-secondary); font-size: 14px; }
.f-col a:hover { color: var(--green-primary); }
#tools-toggle:hover { color: var(--text-primary); }
.f-coffee { display: inline-block; padding: 8px 14px; background: var(--green-glow); border: 1px solid var(--border); border-radius: var(--radius-pill); font-size: 13px; font-weight: 700; }
.f-bottom { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-3); margin-top: var(--space-6); padding-top: var(--space-4); border-top: 1px solid var(--border); }
.f-bottom p { margin: 0; font-size: 14px; color: var(--text-muted); }
.f-links { display: flex; flex-wrap: wrap; gap: var(--space-4); }
.f-links a { font-size: 14px; color: var(--text-secondary); }
.f-links a:hover { color: var(--green-primary); }
.f-note { margin: var(--space-4) 0 0; font-size: 13px; color: var(--text-muted); text-align: center; }

/* ---------- 10. Responsive ---------- */
@media (max-width: 1000px) {
  .howto-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .f-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .menu-toggle { display: flex; }
  .site-nav {
    position: absolute; top: 100%; left: 0; right: 0; display: none;
    background: var(--bg-primary); border-bottom: 1px solid var(--border); box-shadow: var(--shadow);
    padding: var(--space-3) var(--space-4) var(--space-4);
  }
  .site-nav.open { display: block; }
  .site-nav ul { flex-direction: column; gap: 4px; }
  .site-nav a { padding: 12px 14px; border-radius: var(--radius-sm); }

  .tool-grid { grid-template-columns: 1fr; }
  .tool-preview { order: -1; }
  .preview-flip { max-width: 170px; }
  .res-grid { grid-template-columns: 1fr; }
  .res-cardbox > img { max-width: 210px; }
  .res-extra { grid-template-columns: 1fr; }
  .coffee-box { flex-direction: column; text-align: center; }
}

@media (max-width: 640px) {
  .hero { padding-top: var(--space-6); }
  .tool-card { padding: var(--space-4); border-radius: var(--radius); }
  .modal { padding: var(--space-3) var(--space-2); }
  .modal-box { padding: var(--space-3); border-radius: var(--radius); }
  .res-capture { padding: var(--space-4); margin-top: var(--space-6); }
  .res-top { flex-direction: column; gap: 4px; }
  .howto-grid { grid-template-columns: 1fr; gap: var(--space-5); }
  .f-grid { grid-template-columns: 1fr; gap: var(--space-5); }
  .f-bottom { flex-direction: column; text-align: center; }
  .article p, .article li { font-size: 16px; }
  .btn { padding: 12px 20px; }
}

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