/* Dark glassmorphism portfolio theme: black, blue, red */

:root {
  --bg: #0b0f14; /* near-black */
  --bg-2: #0f1722; /* deep blue-black */
  --panel: rgba(255, 255, 255, 0.06);
  --panel-strong: rgba(255, 255, 255, 0.10);
  --stroke: rgba(255, 255, 255, 0.12);
  --text: #e6edf3;
  --muted: #9aa7b8;
  --accent-blue: #2563eb;
  --accent-red: #ef4444;
  --shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
}

/* Base */
html { scroll-behavior: smooth; }
body {
  background: radial-gradient(1200px 800px at 10% -10%, rgba(37, 99, 235, 0.25), transparent 60%),
              radial-gradient(1000px 700px at 100% 0%, rgba(239, 68, 68, 0.2), transparent 55%),
              linear-gradient(180deg, var(--bg), var(--bg-2));
  color: var(--text);
  min-height: 100vh;
}

/* Typography tweaks */
.fw-extrabold { font-weight: 800; }
.text-muted { color: var(--muted) !important; }

/* Navbar */
.glass-nav {
  background: rgba(11, 15, 20, 0.6);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--stroke);
}
.glass-nav .navbar-brand { color: var(--text); }
.glass-nav .nav-link {
  color: var(--muted);
  transition: color .2s ease;
}
.glass-nav .nav-link:hover,
.glass-nav .nav-link:focus {
  color: #ffffff;
}
.navbar-toggler {
  border-color: var(--stroke);
}
.navbar-toggler .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(230,237,243,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Sections */
.site-main { padding-top: 84px; }
.section-hero { padding: 120px 0 48px; }
.section-spaced { padding: 32px 0; }

.section-title {
  font-weight: 700;
  margin-bottom: 16px;
  position: relative;
}
.section-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 72px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-red));
  border-radius: 2px;
}

/* Glass cards */
.glass-card {
  background: var(--panel);
  border: 1px solid var(--stroke);
  border-radius: 16px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
}

/* Brand gradient text */
.brand-gradient {
  background: linear-gradient(135deg, #ffffff 0%, #bbd0ff 40%, var(--accent-blue) 70%, var(--accent-red) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Buttons */
.btn-accent {
  color: #fff;
  background-image: linear-gradient(135deg, var(--accent-blue), var(--accent-red));
  border: none;
  box-shadow: 0 8px 22px rgba(37, 99, 235, 0.35);
}
.btn-accent:hover, .btn-accent:focus { filter: brightness(1.05); color: #fff; }

.btn-outline-accent {
  color: #dbeafe;
  border: 1px solid var(--panel-strong);
  background: transparent;
}
.btn-outline-accent:hover, .btn-outline-accent:focus {
  color: #fff;
  border-color: transparent;
  background-image: linear-gradient(135deg, rgba(37,99,235,.15), rgba(239,68,68,.15));
}

/* Skills */
.skills-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.skill-chip {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.12);
  border: 1px solid var(--stroke);
  color: #e2e8f0;
  font-size: 0.95rem;
}

/* Projects */
.project-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--stroke);
  border-radius: 12px;
  transition: transform .2s ease, box-shadow .2s ease;
}
.project-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.project-media svg { display: block; }

.badge.tech {
  background: rgba(37, 99, 235, 0.18);
  color: #cfe1ff;
  border: 1px solid rgba(37, 99, 235, 0.35);
}

/* Footer */
footer { border-top: 1px solid var(--stroke); background: rgba(0,0,0,0.25); backdrop-filter: blur(6px); }

/* Language switch buttons active state */
.lang-switch .btn[aria-pressed="true"] {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.24), rgba(239, 68, 68, 0.24));
  color: #fff;
  border-color: transparent;
}

/* Anchor scroll offset for fixed navbar */
section { scroll-margin-top: 96px; }

/* Focus ring */
:focus-visible {
  outline: 2px solid rgba(37, 99, 235, 0.8);
  outline-offset: 2px;
  border-radius: 6px;
}

/* Small screens */
@media (max-width: 576px) {
  .section-hero { padding: 96px 0 32px; }
}