:root {
  /* === Easy theming === */
  --color-primary: #984891;   /* change me */
  --color-secondary: #fb00ff; /* change me */

  --bg: #0b0d12;
  --bg-soft: #10131a;
  --text: #e8ecf1;
  --muted: #98a2b3;
  --card: rgba(255,255,255,0.04);
  --border: rgba(255,255,255,0.08);
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 16px;
  --blur: 10px;

  /* derived */
  --grad: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f8fb;
    --bg-soft: #ffffff;
    --text: #0d1117;
    --muted: #4b5563;
    --card: rgba(0,0,0,0.04);
    --border: rgba(0,0,0,0.08);
    --shadow: 0 10px 30px rgba(0,0,0,.08);
  }
}

/* ===== Base ===== */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background:
    radial-gradient(1000px 600px at 80% -10%, rgba(124,92,255,0.05), transparent 60%),
    radial-gradient(800px 500px at 10% 20%, rgba(0,209,178,0.05), transparent 60%),
    var(--bg);
  color: var(--text);
}
.container { width: min(1100px, 92%); margin: 0 auto; }
a, a:hover, a:focus { text-decoration: none; }

/* ===== NAVBAR (desktop) ===== */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(var(--blur));
  background: color-mix(in srgb, var(--bg-soft) 70%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 12px 0;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: .3px; }
.brand .logo { width: 34px; height: 34px; border-radius: 50%; background: var(--grad); box-shadow: var(--shadow); position: relative; }
.brand .logo::after { content:""; position:absolute; inset:3px; border-radius:50%; background: radial-gradient(circle at 30% 30%, #fff6, transparent 60%); }
.brand span { font-size: 1.05rem; }

.links { display: flex; gap: 4px; align-items: center; }
.nav a {
  color: var(--text); padding: 10px 12px; border-radius: 999px; position: relative;
  transition: transform .12s cubic-bezier(.2,.8,.2,1);
}
.nav a:hover { transform: translateY(-1px); }
.nav a::after {
  content: ""; position: absolute; left: 12px; right: 12px; bottom: 6px; height: 2px; border-radius: 2px;
  background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .18s ease;
}
.nav a:hover::after, .nav a.active::after { transform: scaleX(1); }

.cta {
  background: var(--grad); color: white; padding: 10px 16px; border-radius: 999px; border: 0; cursor: pointer;
  box-shadow: var(--shadow); font-weight: 700; letter-spacing: .2px; transition: filter .12s linear, transform .12s cubic-bezier(.2,.8,.2,1);
}
.cta:hover { filter: brightness(1.05); transform: translateY(-1px); }
.menu-btn { display: none; background: transparent; border: 1px solid var(--border); color: var(--text); padding: 8px 10px; border-radius: 10px; }

/* ===== HERO ===== */
.hero { padding: 64px 0 40px; position: relative; overflow: clip; }
.hero .grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
h1 { font-size: clamp(2rem, 2.4rem + 1.5vw, 4.2rem); line-height: 1.05; margin: 14px 0; letter-spacing: -.02em; }
.gradient-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.sub { color: var(--muted); font-size: 1.05rem; }

.hero-card {
  border: 1px solid var(--border); background: var(--card); backdrop-filter: blur(var(--blur));
  border-radius: calc(var(--radius) + 6px);
  padding: 18px; box-shadow: var(--shadow);
  display: grid; gap: 10px;
  transition: border-color .12s linear, box-shadow .12s linear;
  will-change: transform;
}

/* ===== SECTIONS & CARDS ===== */
section { padding: 56px 0; content-visibility: auto; contain-intrinsic-size: 800px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

.card {
  border: 1px solid var(--border);
  background: var(--card);
  backdrop-filter: blur(var(--blur));
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  transition: border-color .12s linear, outline .12s linear, box-shadow .12s linear;
}
/* hover: thicker-looking border via outline, no movement/resize */
.card:hover {
  border-color: color-mix(in srgb, var(--color-primary) 40%, var(--border));
  outline: 2px solid color-mix(in srgb, var(--color-primary) 40%, var(--border));
  outline-offset: -1px;
  box-shadow: 0 14px 40px rgba(0,0,0,.35);
}

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 10px; }
.stat { border: 1px solid var(--border); background: color-mix(in srgb, var(--card) 80%, transparent); border-radius: var(--radius); padding: 12px; text-align: center; }
.stat b { font-size: 1.3rem; display:block; }

/* ===== Reveal Animations ===== */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity .25s ease-out, transform .25s ease-out;
  }
  .reveal.in {
    opacity: 1;
    transform: translateY(0);
  }
  /* ensure no unintended movement on hover even when revealed */
  .card.reveal.in:hover { transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; }
}

/* ===== FOOTER ===== */
footer {
  padding: 40px 0; color: var(--muted);
  border-top: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-soft) 85%, transparent);
}

/* ===== Mobile Icon-Only Nav ===== */
/* hidden by default; appears on ≤900px */
.nav-icons { display: none; }

@media (max-width: 900px) {
  /* layout adjustments */
  .hero .grid { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr 1fr; }

  /* hide the desktop header row on mobile */
  .nav .nav-inner { display: none; }

  /* icon-only top bar: NO BOXES */
  .nav-icons {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: 1fr;
    align-items: center;
    gap: 4px;
    padding: 8px 0;
    position: sticky; top: 0; z-index: 60;

    background: color-mix(in srgb, var(--bg-soft) 90%, transparent);
    backdrop-filter: blur(var(--blur));
    border-bottom: 1px solid var(--border);
    text-align: center;
  }
  .nav-icons a {
    color: var(--text);
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    /* tiny label */
    font-size: 0.65rem;
    line-height: 1;
    padding: 2px 0;

    /* explicitly remove any boxes */
    border: none;
    background: none;
    box-shadow: none;
  }
  .nav-icons i {
    font-size: 1.5rem;  /* bigger icon */
    margin-bottom: 2px;
  }
  /* active page hint */
  .nav-icons a.is-active i { color: var(--color-primary); }
  /* logout color */
  .nav-icons a.icon-danger i { color: #dc3545; }
}

@media (max-width: 640px) {
  /* cheaper effects on low-power screens */
  .nav { backdrop-filter: none; background: color-mix(in srgb, var(--bg-soft) 92%, transparent); }
  .card, .hero-card { box-shadow: 0 6px 18px rgba(0,0,0,.25); }
  .cards { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
}
.cta::after,
.nav-icons a::after {
  display: none !important;
  content: none !important;
}