/* ===== BASE ===== */
body {
  font-family: Arial, sans-serif;
  background: #f4f6f8;
  color: #111;
  margin: 0;
  transition: background 0.3s, color 0.3s;
}

body.dark {
  background: #0e1621;
  color: #e5e7eb;
}

a {
  color: #1976D2;
  text-decoration: none;
}

.dark a {
  color: #90CAF9;
}

/* ===== HEADER & LOGOS ===== */
.top-header {
  background: #fff;
  padding: 16px;
  border-bottom: 1px solid #ddd;
  position: relative;
  text-align: center;
}

body.dark .top-header {
  background: #020617;
  border-color: #334155;
}

.logo-bar {
  display: flex;
  justify-content: center;
  gap: 40px;
}

.logo-bar img {
  height: 48px;
  opacity: 0;
  animation: fadeIn 1.2s ease forwards;
}

.logo-bar img:nth-child(1){ animation-delay: .2s; }
.logo-bar img:nth-child(2){ animation-delay: .6s; }
.logo-bar img:nth-child(3){ animation-delay: 1s; }

@keyframes fadeIn {
  from { opacity:0; transform: translateY(-10px); }
  to   { opacity:1; transform: translateY(0); }
}

.dark-toggle {
  position: absolute;
  right: 16px;
  top: 16px;
  padding: 8px 14px;
  border-radius: 20px;
  border: none;
  cursor: pointer;
}

/* ===== CONTENT ===== */
.container {
  max-width: 1000px;
  margin: 40px auto;
  padding: 18px;
}

.card {
  background: #fff;
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,.08);
}

body.dark .card {
  background: #020617;
}

.btn {
  display: inline-block;
  background: #1976D2;
  color: #fff;
  padding: 10px 16px;
  border-radius: 8px;
  margin: 6px;
  font-weight: 600;
}

/* ===== PORTFOLIO ===== */
.portfolio-frame {
  margin: 50px auto;
  border: 2px solid #1976D2;
  border-radius: 14px;
  padding: 24px;
  background: #fff;
}

body.dark .portfolio-frame {
  background: #020617;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(260px,1fr));
  gap: 20px;
}

.portfolio-card {
  padding: 20px;
  border-radius: 10px;
  border: 1px solid #ccc;
  text-align: center;
  background: #f9fafb;
}

body.dark .portfolio-card {
  background: #020617;
  border-color: #334155;
}

/* ===== FOOTER ===== */
.bottomline {
  background: #111;
  color: #eee;
  text-align: center;
  padding: 16px;
  margin-top: 60px;
}

.bottomline a {
  color: #64B5F6;
  margin: 0 6px;
}