/* ============================================================
   ZoBud — Design System
   Duolingo energy × Finch warmth. Forest green / amber / teal.
   ============================================================ */

:root {
  /* Sage / forest greens (app primary) */
  --sage: #87A96B;
  --sage-deep: #5e7d47;
  --sage-light: #b8cda3;
  --sage-subtle: #eef3e7;
  --forest-deep: #3c5230;
  --forest-100: #e7f0db;

  /* Amber (energy / eggs) */
  --amber: #FFBF00;
  --amber-deep: #E0A800;
  --amber-soft: #FCEFC4;

  /* Lavender accent (focus depth / repeats) */
  --lavender: #9B87F5;
  --lavender-soft: #ece8fd;

  /* Teal (gems) */
  --teal: #2BB6C4;
  --teal-soft: #d2f0f3;

  /* Soft neutrals (warm cream base) */
  --cream: #FAF8F2;
  --cream-2: #F4F0E6;
  --paper: #ffffff;
  --ink-900: #1F2937;
  --ink-700: #374151;
  --ink-500: #6B7280;
  --ink-400: #9aa3ad;
  --line: #ece6d8;

  /* Urgency scale — bubble + task-card color (matches app) */
  --u-low: #cfe6b4;     --u-low-2: #87A96B;   --u-low-ink: #3f6b2e;
  --u-mid: #fbe6a3;     --u-mid-2: #FFBF00;   --u-mid-ink: #8a6a0a;
  --u-high: #f8d199;    --u-high-2: #F08A24;  --u-high-ink: #9a5212;
  --u-crit: #f4c2bb;    --u-crit-2: #E26D5C;  --u-crit-ink: #9c3a2c;

  /* Semantic */
  --bg: var(--cream);
  --bg-elev: var(--paper);
  --bg-soft: var(--cream-2);
  --text: var(--ink-900);
  --text-soft: var(--ink-500);
  --text-mute: var(--ink-400);
  --border: var(--line);
  --primary: var(--sage);
  --primary-press: var(--sage-deep);
  --accent: var(--amber);

  --shadow-sm: 0 1px 2px rgba(60,82,48,.05), 0 2px 10px rgba(60,82,48,.06);
  --shadow-md: 0 6px 20px rgba(60,82,48,.08), 0 2px 6px rgba(60,82,48,.05);
  --shadow-lg: 0 24px 60px rgba(60,82,48,.14), 0 8px 24px rgba(60,82,48,.09);
  --shadow-phone: 0 40px 90px rgba(40,60,28,.26), 0 12px 30px rgba(40,60,28,.16);
  --shadow-sage: 0 10px 26px rgba(135,169,107,.34);

  --r-sm: 12px;
  --r-md: 18px;
  --r-lg: 28px;
  --r-xl: 40px;
  --r-pill: 999px;

  --maxw: 1200px;
  --font: var(--font-jakarta), system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --ease: cubic-bezier(.22,.61,.36,1);
  --ease-bounce: cubic-bezier(.34,1.56,.64,1);
}

[data-theme="dark"] {
  --bg: #121d11;
  --bg-elev: #1b2a18;
  --bg-soft: #16230f;
  --text: #eef3e7;
  --text-soft: #b6c7a6;
  --text-mute: #7e9170;
  --border: #2a3a23;
  --primary: #9bbd7d;
  --primary-press: #87A96B;
  --cream: #121d11;
  --sage-subtle: rgba(135,169,107,.16);
  --forest-100: rgba(135,169,107,.18);
  --amber-soft: rgba(255,191,0,.16);
  --lavender-soft: rgba(155,135,245,.18);
  --teal-soft: rgba(43,182,196,.18);
  --shadow-lg: 0 24px 70px rgba(0,0,0,.5), 0 8px 24px rgba(0,0,0,.4);
  --shadow-phone: 0 40px 100px rgba(0,0,0,.6), 0 12px 30px rgba(0,0,0,.5);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background .5s var(--ease), color .5s var(--ease);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 { line-height: 1.08; letter-spacing: -.02em; font-weight: 800; }
.display {
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  font-weight: 800;
  letter-spacing: -.035em;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .8rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: var(--primary);
  background: var(--forest-100);
  padding: 7px 14px; border-radius: var(--r-pill);
}
[data-theme="dark"] .eyebrow { background: rgba(43,191,99,.14); }
.section-title { font-size: clamp(2rem, 4vw, 3.1rem); font-weight: 800; }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.3rem); color: var(--text-soft); line-height: 1.6; }

.section { padding: clamp(48px, 7vw, 88px) 0; position: relative; }
.center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--font); font-weight: 700; font-size: 1rem;
  padding: 15px 26px; border-radius: var(--r-pill); border: none; cursor: pointer;
  transition: transform .25s var(--ease-bounce), box-shadow .25s var(--ease), background .25s;
  white-space: nowrap;
}
.btn:active { transform: scale(.96); }
.btn-primary {
  background: var(--primary); color: #fff;
  box-shadow: 0 5px 0 var(--primary-press), 0 12px 22px rgba(135,169,107,.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 7px 0 var(--primary-press), 0 16px 28px rgba(135,169,107,.46); }
.btn-primary:active { transform: translateY(2px); box-shadow: 0 2px 0 var(--primary-press), 0 6px 12px rgba(135,169,107,.4); }
.btn-ghost {
  background: var(--bg-elev); color: var(--text);
  border: 1.5px solid var(--border); box-shadow: var(--shadow-sm);
}
.btn-ghost:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--primary); }
.btn-lg { padding: 18px 32px; font-size: 1.08rem; }

.store-btn {
  display: inline-flex; align-items: center; gap: 11px;
  background: #2b3a2a; color: #fff; padding: 11px 20px; border-radius: var(--r-md);
  transition: transform .25s var(--ease-bounce), box-shadow .25s;
  box-shadow: var(--shadow-sm);
}
[data-theme="dark"] .store-btn { background: #06100b; border: 1px solid var(--border); }
.store-btn:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.store-btn svg,
.store-btn .app-icon { width: 26px; height: 26px; flex: none; }
.store-btn .app-icon { border-radius: 8px; object-fit: cover; }
.store-btn .sb-small { font-size: .62rem; opacity: .8; line-height: 1; letter-spacing: .04em; }
.store-btn .sb-big { font-size: 1.05rem; font-weight: 700; line-height: 1.1; }

/* ---------- Bubble system ----------
   size = energy, color = urgency  (app-matched: soft pastel + ring) */
.bubble {
  position: absolute; border-radius: 50%;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; font-weight: 700; line-height: 1.15;
  box-shadow: inset 0 -5px 12px rgba(255,255,255,.55), 0 8px 20px rgba(60,82,48,.14);
  border: 2px solid rgba(255,255,255,.6);
  will-change: transform; cursor: default;
}
.bubble::after {
  content: ""; position: absolute; top: 12%; left: 16%;
  width: 30%; height: 24%; border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, rgba(255,255,255,.7), rgba(255,255,255,0) 70%);
  pointer-events: none;
}
.u-low  { background: radial-gradient(circle at 40% 32%, #e6f1d6, var(--u-low)); border-color:#bcd99c; color: var(--u-low-ink); }
.u-mid  { background: radial-gradient(circle at 40% 32%, #fdf3cf, var(--u-mid)); border-color:#f3d77e; color: var(--u-mid-ink); }
.u-high { background: radial-gradient(circle at 40% 32%, #fde7c8, var(--u-high)); border-color:#f3c184; color: var(--u-high-ink); }
.u-crit { background: radial-gradient(circle at 40% 32%, #fadcd6, var(--u-crit)); border-color:#eeaea3; color: var(--u-crit-ink); }

@keyframes float-soft {
  0%,100% { transform: translateY(0) translateX(0); }
  50% { transform: translateY(-16px) translateX(6px); }
}
@keyframes float-soft-2 {
  0%,100% { transform: translateY(0) translateX(0); }
  50% { transform: translateY(14px) translateX(-8px); }
}

/* ---------- Cards ---------- */
.card {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation: none !important; }
}