@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Sans:wght@300;400;500&display=swap');

:root {
  --bg: #0a0c10;
  --bg2: #0f1218;
  --bg3: #141820;
  --card: #161b24;
  --accent: #00e5ff;
  --accent2: #ff4d6d;
  --accent3: #a259ff;
  --text: #e8eaf0;
  --muted: #7a8499;
  --border: rgba(255,255,255,0.07);
  --low: #22c55e;
  --med: #f59e0b;
  --high: #ef4444;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--text); font-family: 'DM Sans', sans-serif; font-size: 16px; line-height: 1.7; overflow-x: hidden; transition: background 0.3s, color 0.3s; }
h1,h2,h3,h4 { font-family: 'Syne', sans-serif; }

/* LIGHT MODE */
body.light {
  --bg: #f4f6fa; --bg2: #eaecf2; --bg3: #e0e3ec; --card: #ffffff;
  --text: #0f1218; --muted: #6b7280; --border: rgba(0,0,0,0.09);
  background: #f4f6fa;
}

/* NAV */
header nav, body > nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.2rem 6%; backdrop-filter: blur(20px);
  background: var(--nav-bg); border-bottom: 1px solid var(--border);
  transition: background 0.3s, border-color 0.3s;
}
:root { --nav-bg: rgba(10,12,16,0.92); }
body.light { --nav-bg: rgba(244,246,250,0.95); }
.nav-logo { font-family: 'Syne', sans-serif; font-weight: 800; font-size: 1.4rem; letter-spacing: 0.08em; color: var(--accent); text-decoration: none; }
.nav-logo span { color: var(--text); }
.nav-subtitle { font-size: 0.72rem; font-weight: 400; color: var(--muted); letter-spacing: 0.01em; font-family: 'DM Sans', sans-serif; vertical-align: middle; }
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 0.9rem; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-cta { background: var(--accent); color: #000; padding: 0.5rem 1.2rem; border-radius: 6px; font-weight: 600; font-size: 0.85rem; text-decoration: none; font-family: 'Syne', sans-serif; letter-spacing: 0.04em; transition: opacity 0.2s; }
.nav-cta:hover { opacity: 0.85; }
.theme-toggle {
  background: var(--card); border: 1px solid var(--border); color: var(--text);
  width: 38px; height: 38px; border-radius: 8px; cursor: pointer;
  display: flex; align-items: center; justify-content: center; font-size: 1rem;
  transition: all 0.3s; flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--accent); }

/* FOOTER */
footer {
  padding: 3rem 6%; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem;
}
footer .logo { font-family: 'Syne', sans-serif; font-weight: 800; color: var(--accent); font-size: 1.2rem; }
footer p { color: var(--muted); font-size: 0.85rem; }
footer nav { display: flex; }
footer nav a { color: var(--muted); text-decoration: none; font-size: 0.85rem; margin-left: 1.5rem; transition: color 0.2s; }
footer nav a:hover { color: var(--text); }

/* BUTTONS */
.btn-primary { background: var(--accent); color: #000; padding: 0.85rem 2rem; border-radius: 8px; font-weight: 700; font-family: 'Syne', sans-serif; letter-spacing: 0.04em; text-decoration: none; font-size: 0.95rem; transition: all 0.2s; display: inline-flex; align-items: center; gap: 0.5rem; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,229,255,0.25); }
.btn-outline { background: transparent; color: var(--text); padding: 0.85rem 2rem; border-radius: 8px; font-weight: 600; font-family: 'Syne', sans-serif; letter-spacing: 0.04em; text-decoration: none; font-size: 0.95rem; border: 1px solid var(--border); transition: all 0.2s; }
.btn-outline:hover { border-color: rgba(255,255,255,0.25); transform: translateY(-2px); }

/* SECTION COMMON */
.section-tag { font-family: 'Syne', sans-serif; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.15em; color: var(--accent); text-transform: uppercase; margin-bottom: 0.8rem; }
.section-title { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; line-height: 1.1; letter-spacing: -0.01em; margin-bottom: 1rem; }
.section-sub { color: var(--muted); max-width: 520px; font-size: 1rem; margin-bottom: 3.5rem; }

@media(max-width:600px) {
  header nav .nav-links { display: none; }
}

/* ── MOBILE NAV ── */
.hamburger {
  display: none; background: transparent; border: 1px solid var(--border);
  color: var(--text); width: 38px; height: 38px; border-radius: 8px;
  cursor: pointer; align-items: center; justify-content: center;
  font-size: 1.1rem; transition: all 0.2s; flex-shrink: 0;
}
.hamburger:hover { border-color: var(--accent); }

.mobile-menu {
  display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: var(--bg); z-index: 200; flex-direction: column;
  padding: 2rem;
}
.mobile-menu.open { display: flex; }
.mobile-menu-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 2.5rem;
}
.mobile-menu-logo { font-family: 'Syne', sans-serif; font-weight: 800; font-size: 1.4rem; color: var(--accent); }
.mobile-close {
  background: transparent; border: 1px solid var(--border); color: var(--text);
  width: 38px; height: 38px; border-radius: 8px; cursor: pointer;
  font-size: 1.2rem; display: flex; align-items: center; justify-content: center;
}
.mobile-nav-links { display: flex; flex-direction: column; gap: 0.5rem; flex: 1; }
.mobile-nav-links a {
  color: var(--text); text-decoration: none; font-family: 'Syne', sans-serif;
  font-size: 1.3rem; font-weight: 700; padding: 0.8rem 0;
  border-bottom: 1px solid var(--border); transition: color 0.2s;
}
.mobile-nav-links a:hover { color: var(--accent); }
.mobile-menu-footer { padding-top: 1.5rem; }
.mobile-cta {
  display: block; background: var(--accent); color: #000; text-align: center;
  padding: 0.9rem; border-radius: 10px; font-family: 'Syne', sans-serif;
  font-weight: 700; text-decoration: none; font-size: 1rem;
}

@media(max-width: 768px) {
  header nav .nav-links { display: none; }
  header nav .nav-cta { display: none; }
  .hamburger { display: flex; }
}

/* ── USER NAV DROPDOWN ── */
.nav-user {
  display: none; align-items: center; gap: 0.6rem; cursor: pointer;
  position: relative;
}
.nav-user.visible { display: flex; }
.nav-user-avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent3), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-family: "Syne", sans-serif; font-weight: 700; font-size: 0.82rem; color: #fff;
  flex-shrink: 0; border: 2px solid rgba(0,229,255,0.3);
}
.nav-user-name { font-size: 0.88rem; font-weight: 600; color: var(--text); max-width: 110px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-user-chevron { font-size: 0.7rem; color: var(--muted); transition: transform 0.2s; }
.nav-user.open .nav-user-chevron { transform: rotate(180deg); }
.nav-dropdown {
  display: none; position: absolute; top: calc(100% + 0.75rem); right: 0;
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 0.5rem; min-width: 190px; z-index: 300;
  box-shadow: 0 8px 30px rgba(0,0,0,0.35);
}
.nav-user.open .nav-dropdown { display: block; }
.nav-dropdown-user {
  padding: 0.6rem 0.75rem 0.75rem;
  border-bottom: 1px solid var(--border); margin-bottom: 0.4rem;
}
.nav-dropdown-user-name { font-weight: 700; font-size: 0.88rem; }
.nav-dropdown-user-email { font-size: 0.75rem; color: var(--muted); }
.nav-dropdown-item {
  display: flex; align-items: center; gap: 0.6rem; padding: 0.6rem 0.75rem;
  border-radius: 8px; text-decoration: none; color: var(--text);
  font-size: 0.85rem; transition: background 0.15s; cursor: pointer;
  border: none; background: transparent; width: 100%; text-align: left;
  font-family: "DM Sans", sans-serif;
}
.nav-dropdown-item:hover { background: var(--bg2); }
.nav-dropdown-item.danger { color: var(--high); }
.nav-dropdown-sep { height: 1px; background: var(--border); margin: 0.4rem 0; }