/* Doongu — studio de développement d'applications.
   Deux thèmes via [data-theme] : dark = palette Doongu, light = palette crème Tabba. */
:root, [data-theme="dark"] {
  --bg: #0E1117;
  --bg-soft: #161B24;
  --card: #1B212C;
  --border: #283041;
  --text: #ECECEC;
  --muted: #9AA3B2;
  --primary: #58D68D;
  --accent: #E67E22;
  --header-bg: rgba(14, 17, 23, 0.75);
  --card-hover-border: #3a4458;
  --radius: 18px;
  --maxw: 1080px;
}
[data-theme="light"] {
  --bg: #F7F3E9;
  --bg-soft: #FFFFFF;
  --card: #FFFFFF;
  --border: #E4DCC9;
  --text: #3D3D3D;
  --muted: #8A8378;
  --primary: #58D68D;
  --accent: #E67E22;
  --header-bg: rgba(247, 243, 233, 0.8);
  --card-hover-border: #d8ccb3;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Poppins', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color .2s ease, color .2s ease;
}

a { color: inherit; text-decoration: none; }

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

/* Header */
header {
  position: sticky; top: 0; z-index: 10;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 20px; letter-spacing: -0.3px; }
.brand img { width: 36px; height: 36px; border-radius: 10px; }
.nav-links { display: flex; gap: 28px; font-size: 15px; color: var(--muted); }
.nav-links a:hover { color: var(--text); }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--primary); color: #0E1117; font-weight: 600;
  padding: 11px 20px; border-radius: 999px; font-size: 15px;
  transition: transform .15s ease, filter .15s ease;
}
.btn:hover { transform: translateY(-1px); filter: brightness(1.05); }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.nav-right { display: flex; align-items: center; gap: 14px; }
.lang-select {
  appearance: none; -webkit-appearance: none;
  background-color: var(--bg-soft); color: var(--text);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2.5 4.5l3.5 3.5 3.5-3.5' fill='none' stroke='%239AA3B2' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center; background-size: 11px;
  border: 1px solid var(--border); border-radius: 999px;
  padding: 9px 36px 9px 16px; font: inherit; font-size: 14px; cursor: pointer;
  transition: border-color .15s ease, background-color .2s ease;
}
.lang-select:hover { border-color: var(--card-hover-border); }
.lang-select:focus-visible { outline: none; border-color: var(--primary); }
.lang-select option { background: var(--bg-soft); color: var(--text); }
.theme-toggle {
  display: inline-grid; place-items: center;
  width: 40px; height: 40px; border-radius: 999px; padding: 0;
  background: var(--bg-soft); color: var(--text);
  border: 1px solid var(--border); font-size: 16px; line-height: 1; cursor: pointer;
}
.theme-toggle:hover { border-color: var(--card-hover-border); }

/* Hero */
.hero { padding: 96px 0 72px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; top: -200px; right: -150px;
  width: 520px; height: 520px; border-radius: 50%;
  background: radial-gradient(circle, rgba(88,214,141,.18), transparent 70%);
  pointer-events: none;
}
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: 1.5px;
  text-transform: uppercase; color: var(--primary);
  border: 1px solid var(--border); border-radius: 999px;
  padding: 6px 14px; margin-bottom: 24px;
}
.hero h1 {
  font-size: clamp(38px, 6vw, 64px); font-weight: 800; line-height: 1.05;
  letter-spacing: -1.5px; max-width: 760px; margin-bottom: 22px;
}
.hero h1 .grad {
  background: linear-gradient(100deg, var(--primary), var(--accent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead { font-size: 19px; color: var(--muted); max-width: 600px; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* Sections */
section { padding: 72px 0; }
.section-title { font-size: clamp(28px, 4vw, 40px); font-weight: 700; letter-spacing: -0.8px; margin-bottom: 14px; }
.section-sub { color: var(--muted); max-width: 560px; margin-bottom: 48px; font-size: 17px; }

/* Cards / services */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 22px; }
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 30px;
  transition: transform .2s ease, border-color .2s ease;
}
.card:hover { transform: translateY(-4px); border-color: var(--card-hover-border); }
.card .ic {
  width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center;
  background: rgba(88,214,141,.12); margin-bottom: 18px; font-size: 24px;
}
.card h3 { font-size: 19px; font-weight: 600; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 15px; }

/* Showcase */
.showcase {
  background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: 24px; padding: 48px; display: grid;
  grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: center;
}
.showcase .tag { color: var(--accent); font-weight: 600; font-size: 14px; letter-spacing: .5px; text-transform: uppercase; }
.showcase h3 { font-size: 30px; font-weight: 700; margin: 10px 0 14px; letter-spacing: -0.5px; }
.showcase p { color: var(--muted); margin-bottom: 24px; }
.showcase .visual {
  aspect-ratio: 4/3; border-radius: 18px; display: grid; place-items: center;
  background: linear-gradient(135deg, #F7F3E9, #E8DCC4);
}
.showcase .visual img { width: 58%; }

/* Contact */
.contact {
  text-align: center;
  background: linear-gradient(160deg, var(--card), var(--bg-soft));
  border: 1px solid var(--border); border-radius: 24px;
  padding: 64px 32px;
}
.contact h2 { font-size: clamp(28px, 4vw, 40px); font-weight: 700; letter-spacing: -0.8px; margin-bottom: 14px; }
.contact p { color: var(--muted); margin-bottom: 30px; font-size: 17px; }
.mail-btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 19px; font-weight: 600; color: #0E1117;
  background: var(--primary); padding: 16px 32px; border-radius: 999px;
  transition: transform .15s ease, filter .15s ease;
}
.mail-btn:hover { transform: translateY(-2px); filter: brightness(1.05); }

/* Footer */
footer { border-top: 1px solid var(--border); padding: 40px 0; color: var(--muted); font-size: 14px; }
.foot { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; }
.foot a:hover { color: var(--text); }

@media (max-width: 760px) {
  .nav-links { display: none; }
  .showcase { grid-template-columns: 1fr; padding: 32px; }
  .hero { padding: 64px 0 48px; }
}