/* ============================================================
   Alp Eren Demirkan Portfolio — Custom Styles
   ============================================================ */

/* ── Base ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

body {
  background-color: #030712;
  color: #f9fafb;
}

/* ── Gradient Text ────────────────────────────────────────── */
.gradient-text {
  background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 50%, #06B6D4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Gradient Background ──────────────────────────────────── */
.gradient-bg {
  background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
}

/* ── Primary Button ───────────────────────────────────────── */
.btn-primary {
  background: linear-gradient(135deg, #3B82F6 0%, #7C3AED 100%);
  transition: opacity 0.2s, transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 0 30px rgba(59, 130, 246, 0.5);
}

.btn-primary:active {
  transform: translateY(0);
}

/* ── Section Label ────────────────────────────────────────── */
.section-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  background: linear-gradient(135deg, #3B82F6, #8B5CF6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Navbar ───────────────────────────────────────────────── */
#navbar.scrolled {
  background: rgba(3, 7, 18, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(55, 65, 81, 0.5);
}

/* ── Orb / Glow Blobs ─────────────────────────────────────── */
.orb {
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}

.orb-blue   { background: radial-gradient(circle, #3B82F6 0%, transparent 70%); }
.orb-purple { background: radial-gradient(circle, #8B5CF6 0%, transparent 70%); }
.orb-cyan   { background: radial-gradient(circle, #06B6D4 0%, transparent 70%); }

/* ── Grid Background ──────────────────────────────────────── */
.grid-bg {
  background-image:
    linear-gradient(rgba(59,130,246,0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,0.15) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* ── Scroll Indicator ─────────────────────────────────────── */
.scroll-dot {
  animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50%       { transform: translateY(8px); opacity: 0.3; }
}

/* ── Stat Card ────────────────────────────────────────────── */
.stat-card {
  background: rgba(17, 24, 39, 0.6);
  border: 1px solid rgba(55, 65, 81, 0.6);
  transition: border-color 0.2s, transform 0.2s;
}

.stat-card:hover {
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateY(-2px);
}

/* ── About Card ───────────────────────────────────────────── */
.about-card {
  background: linear-gradient(145deg, rgba(17, 24, 39, 0.8), rgba(10, 15, 30, 0.9));
  transition: transform 0.3s, box-shadow 0.3s;
}

.about-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(59, 130, 246, 0.15);
}

/* ── Profile Photo ────────────────────────────────────────── */
.profile-photo-wrap {
  position: relative;
}

/* Animated gradient ring */
.profile-ring {
  background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 50%, #06B6D4 100%);
  animation: ringRotate 4s linear infinite;
  background-size: 200% 200%;
}

@keyframes ringRotate {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Soft glow behind photo */
.profile-glow {
  background: radial-gradient(ellipse at center,
    rgba(59, 130, 246, 0.25) 0%,
    rgba(139, 92, 246, 0.15) 40%,
    transparent 70%
  );
  filter: blur(40px);
  transform: scale(1.2);
}

/* Image itself */
.profile-img {
  display: block;
  max-height: 420px;
  transition: transform 0.5s ease;
  user-select: none;
}

.profile-ring:hover .profile-img {
  transform: scale(1.03);
}

/* Floating info badges */
.profile-badge {
  animation: badgeFloat 3s ease-in-out infinite;
}

.profile-badge:last-of-type {
  animation-delay: 1.5s;
}

@keyframes badgeFloat {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-6px); }
}

/* ── Tech Card ────────────────────────────────────────────── */
.tech-card {
  background: rgba(17, 24, 39, 0.5);
  cursor: default;
  transform: translateY(0);
  transition: border-color 0.25s, transform 0.25s, background 0.25s, box-shadow 0.25s;
}

.tech-card:hover {
  background: rgba(17, 24, 39, 0.9);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

/* ── Project Cards ────────────────────────────────────────── */
.project-card-featured {
  background: linear-gradient(145deg, rgba(17, 24, 39, 0.7), rgba(10, 15, 30, 0.9));
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}

.project-card-featured:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 60px rgba(59, 130, 246, 0.1);
}

.project-card {
  background: rgba(17, 24, 39, 0.5);
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.3);
}

.project-preview {
  background: linear-gradient(135deg, rgba(17, 24, 39, 0.9), rgba(31, 41, 55, 0.6));
  border: 1px solid rgba(55, 65, 81, 0.5);
}

/* ── Tags ─────────────────────────────────────────────────── */
.tag {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.7rem;
  font-weight: 600;
  color: #94a3b8;
  background: rgba(55, 65, 81, 0.4);
  border: 1px solid rgba(55, 65, 81, 0.6);
  letter-spacing: 0.02em;
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}

.tag:hover {
  color: #3B82F6;
  background: rgba(59, 130, 246, 0.1);
  border-color: rgba(59, 130, 246, 0.3);
}

/* ── Contact Cards ────────────────────────────────────────── */
.contact-info-card {
  background: rgba(17, 24, 39, 0.5);
  transition: border-color 0.25s, transform 0.25s;
}

.contact-info-card:hover {
  border-color: rgba(59, 130, 246, 0.3);
  transform: translateX(4px);
}

/* ── Certificate Cards ────────────────────────────────────── */
.cert-category-card {
  background: rgba(17, 24, 39, 0.5);
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}

.cert-category-card:hover {
  border-color: rgba(59, 130, 246, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.25);
}

.cert-item {
  font-size: 0.75rem;
  color: #9ca3af;
  line-height: 1.5;
  padding-left: 0.75rem;
  position: relative;
}

.cert-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3B82F6, #8B5CF6);
}

/* ── Social Icon Buttons ──────────────────────────────────── */
.social-icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: rgba(17, 24, 39, 0.7);
  border: 1px solid rgba(55, 65, 81, 0.7);
  color: #9ca3af;
  transition: color 0.2s, background 0.2s, border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.social-icon-btn:hover {
  color: #ffffff;
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.5);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.2);
}

/* ── Contact Form ─────────────────────────────────────────── */
.contact-form {
  background: linear-gradient(145deg, rgba(17, 24, 39, 0.7), rgba(10, 15, 30, 0.9));
}

.form-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: #9ca3af;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.form-input {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: 0.75rem;
  background: rgba(17, 24, 39, 0.6);
  border: 1px solid rgba(55, 65, 81, 0.7);
  color: #f9fafb;
  font-size: 0.875rem;
  font-family: 'Inter', sans-serif;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
  outline: none;
}

.form-input::placeholder { color: #4b5563; }

.form-input:focus {
  border-color: rgba(59, 130, 246, 0.6);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
  background: rgba(17, 24, 39, 0.9);
}

/* ── Scroll Reveal ────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.15s; }
.reveal-delay-2 { transition-delay: 0.3s; }
.reveal-delay-3 { transition-delay: 0.45s; }
.reveal-delay-4 { transition-delay: 0.6s; }

/* ── Nav Active Link ──────────────────────────────────────── */
.nav-link.active {
  color: #ffffff;
}

/* ── Scrollbar ────────────────────────────────────────────── */
::-webkit-scrollbar        { width: 6px; }
::-webkit-scrollbar-track  { background: #030712; }
::-webkit-scrollbar-thumb  { background: rgba(59, 130, 246, 0.4); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(59, 130, 246, 0.7); }

/* ── Selection ────────────────────────────────────────────── */
::selection {
  background: rgba(59, 130, 246, 0.3);
  color: #ffffff;
}

/* ── Hero: iOS Safari full-height fix ─────────────────────── */
.hero-section {
  min-height: 100vh;
  min-height: 100svh; /* safe viewport height — iOS 15.4+ */
  padding-top: 80px;
  padding-bottom: 80px;
}

/* ── Profile badge spacing (room for absolute badges) ──────── */
.profile-photo-wrap {
  padding: 1.5rem 1.5rem 0.5rem;
}

/* ── iOS form zoom fix (font-size >= 16px prevents auto-zoom) */
@media (max-width: 768px) {
  .form-input {
    font-size: 1rem; /* 16px — prevents iOS auto-zoom on focus */
  }
}

/* ── Disable expensive hover effects on touch devices ──────── */
@media (hover: none) {
  .tech-card:hover,
  .project-card:hover,
  .project-card-featured:hover,
  .stat-card:hover {
    transform: none;
    box-shadow: none;
  }

  .contact-info-card:hover {
    transform: none;
  }

  .btn-primary:hover {
    transform: none;
    opacity: 1;
  }
}

/* ── Responsive tweaks ────────────────────────────────────── */
@media (max-width: 640px) {
  .orb { display: none; }

  /* Reduce animation complexity on small screens */
  .profile-ring {
    animation: none;
    background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 50%, #06B6D4 100%);
  }
}

/* ── Safe area insets (iPhone notch/home indicator) ────────── */
@supports (padding: max(0px)) {
  nav {
    padding-left:  max(1.5rem, env(safe-area-inset-left));
    padding-right: max(1.5rem, env(safe-area-inset-right));
  }

  footer {
    padding-bottom: max(2.5rem, calc(env(safe-area-inset-bottom) + 1rem));
  }
}