:root {
  --blue: #3b6cff;
  --purple: #7b3fe4;
  --pink: #c93cff;
  --orange: #ff9f1c;
  --yellow: #ffd166;
  --bg-dark: #0b0e1a;
  --glass: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.08);
  --text-main: #ffffff;
  --text-muted: rgba(255, 255, 255, 0.7);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #1b1f3b 0%, var(--bg-dark) 60%), linear-gradient(135deg, var(--purple), var(--blue));
  background-attachment: fixed;
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
}

.pp-brand { font-size: 1.6rem; font-weight: 700; display: inline-flex; gap: 2px; }
.pp-brand .pixel { background: linear-gradient(180deg, #5cc3ff 0%, #2f7bff 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.pp-brand .pulse { background: linear-gradient(180deg, #ff4f9a 0%, #c4005f 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

nav { position: fixed; top: 0; left: 0; width: 100%; z-index: 100; padding: 16px 24px; display: flex; justify-content: space-between; align-items: center; background: rgba(11, 14, 26, 0.6); backdrop-filter: blur(12px); border-bottom: 1px solid var(--glass-border); transition: transform 0.3s ease; }
nav.hidden { transform: translateY(-100%); }
.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: white; }
.nav-logo img { height: 32px; filter: drop-shadow(0 0 8px rgba(255,160,80,0.5)); }
.nav-links { display: flex; gap: 24px; align-items: center; transition: opacity 0.3s; }
.nav-links a { color: var(--text-muted); text-decoration: none; font-size: 0.95rem; font-weight: 500; transition: color 0.2s, text-shadow 0.2s; position: relative; }
.nav-links a:hover, .nav-links a.active { color: white; text-shadow: 0 0 12px rgba(255,255,255,0.4); }
.nav-links a.active::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 100%; height: 2px; background: linear-gradient(90deg, var(--yellow), var(--orange)); border-radius: 2px; }
.btn-auth { padding: 8px 16px; border-radius: 8px; border: 1px solid var(--glass-border); background: var(--glass); color: white; cursor: pointer; font-weight: 500; transition: all 0.2s; }
.btn-auth:hover { background: rgba(255,255,255,0.1); transform: translateY(-1px); }

.hamburger { display: none; flex-direction: column; justify-content: space-between; width: 28px; height: 20px; background: transparent; border: none; cursor: pointer; padding: 0; z-index: 110; }
.hamburger span { display: block; width: 100%; height: 3px; background: white; border-radius: 2px; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); transform-origin: center; }
.hamburger.active span:nth-child(1) { transform: translateY(8.5px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.active span:nth-child(3) { transform: translateY(-8.5px) rotate(-45deg); }

.mobile-menu { position: fixed; top: 69px; left: 0; width: 100%; background: rgba(11, 14, 26, 0.95); backdrop-filter: blur(16px); border-bottom: 1px solid var(--glass-border); padding: 20px 24px; display: flex; flex-direction: column; gap: 14px; transform: translateY(-20px); opacity: 0; pointer-events: none; transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1); z-index: 99; }
.mobile-menu.active { transform: translateY(0); opacity: 1; pointer-events: auto; }
.mobile-menu a { color: var(--text-muted); text-decoration: none; font-size: 1.15rem; font-weight: 500; padding: 12px 0; border-bottom: 1px solid var(--glass-border); transition: color 0.2s, transform 0.2s; }
.mobile-menu a:hover, .mobile-menu a.active { color: white; transform: translateX(4px); }
.mobile-menu .btn-auth { margin-top: 8px; width: 100%; text-align: center; }

main { padding-top: 80px; width: 100%; }
section { min-height: calc(100vh - 80px); padding: 80px 24px; display: none; flex-direction: column; align-items: center; justify-content: center; position: relative; opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
section.active { display: flex; }
section.visible { opacity: 1; transform: translateY(0); }
#about { padding-top: 30px; }

.section-title { font-size: 2.4rem; margin-bottom: 40px; text-align: center; background: linear-gradient(90deg, var(--yellow), var(--orange), var(--pink)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; position: relative; display: inline-block; }
.section-title::after { content: ''; position: absolute; bottom: -8px; left: 50%; transform: translateX(-50%); width: 60px; height: 3px; background: linear-gradient(90deg, var(--blue), var(--purple)); border-radius: 2px; }

.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; max-width: 1000px; width: 100%; background: var(--glass); border: 1px solid var(--glass-border); border-radius: 20px; padding: 40px; backdrop-filter: blur(10px); }
.about-img img { width: 100%; border-radius: 12px; filter: drop-shadow(0 10px 30px rgba(0,0,0,0.5)); }
.about-text p { line-height: 1.6; margin-bottom: 16px; color: var(--text-muted); font-size: 1.05rem; }
.about-text h3 { font-size: 1.4rem; margin-bottom: 12px; color: white; }

.portfolio-filters { display: flex; gap: 10px; justify-content: center; margin-bottom: 30px; flex-wrap: wrap; }
.filter-btn { padding: 8px 18px; border-radius: 20px; border: 1px solid var(--glass-border); background: var(--glass); color: var(--text-muted); cursor: pointer; font-size: 0.9rem; transition: all 0.2s; }
.filter-btn:hover, .filter-btn.active { background: rgba(59, 108, 255, 0.2); color: white; border-color: var(--blue); }

.portfolio-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; max-width: 1100px; width: 100%; }
.project-card { background: var(--glass); border: 1px solid var(--glass-border); border-radius: 16px; overflow: hidden; cursor: pointer; transition: transform 0.3s, box-shadow 0.3s; position: relative; }
.project-card:hover { transform: translateY(-8px); box-shadow: 0 12px 40px rgba(0,0,0,0.4); }
.project-thumb { height: 200px; background: linear-gradient(135deg, #1a1f3a, #2a2f5a); display: flex; align-items: center; justify-content: center; font-size: 3rem; color: rgba(255,255,255,0.2); }
.project-info { padding: 20px; position: relative; }
.project-info h3 { margin-bottom: 8px; color: white; }
.project-info p { color: var(--text-muted); font-size: 0.95rem; }
.category-badge { display: inline-block; padding: 4px 10px; border-radius: 20px; font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 8px; background: rgba(255,255,255,0.08); color: var(--text-muted); border: 1px solid var(--glass-border); }
.category-badge.mobilne { background: rgba(59, 108, 255, 0.2); color: #5cc3ff; border-color: rgba(59, 108, 255, 0.3); }
.category-badge.desktop { background: rgba(123, 63, 228, 0.2); color: #a87aff; border-color: rgba(123, 63, 228, 0.3); }
.category-badge.web { background: rgba(255, 159, 28, 0.2); color: #ffaa55; border-color: rgba(255, 159, 28, 0.3); }
.category-badge.console { background: rgba(201, 60, 255, 0.2); color: #d988ff; border-color: rgba(201, 60, 255, 0.3); }
.category-badge.games { background: rgba(255, 79, 154, 0.2); color: #ff88aa; border-color: rgba(255, 79, 154, 0.3); }

.project-card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: linear-gradient(90deg, var(--blue), var(--purple), var(--pink)); opacity: 0; transition: opacity 0.3s; }
.project-card:hover::before { opacity: 1; }

.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.85); backdrop-filter: blur(8px); z-index: 200; display: flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none; transition: opacity 0.4s ease; }
.modal-overlay.active { opacity: 1; pointer-events: auto; }
.modal-content { width: 90%; max-width: 900px; max-height: 85vh; background: #12152a; border-radius: 20px; border: 1px solid var(--glass-border); overflow: hidden; transform: scale(0.85); opacity: 0; transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.4s; display: flex; flex-direction: column; }
.modal-overlay.active .modal-content { transform: scale(1); opacity: 1; }
.modal-header { padding: 16px 24px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--glass-border); background: rgba(255,255,255,0.02); }
.modal-title { font-size: 1.3rem; font-weight: 600; }
.macos-close { width: 28px; height: 28px; border-radius: 50%; border: none; cursor: pointer; background: #ff5f57; color: white; font-size: 14px; display: flex; align-items: center; justify-content: center; box-shadow: 0 2px 8px rgba(0,0,0,0.3); transition: transform 0.2s, filter 0.2s; }
.macos-close:hover { transform: scale(1.1); filter: brightness(1.2); }
.macos-close::before { content: '✕'; }
.modal-body { padding: 24px; overflow-y: auto; flex: 1; }
.carousel { position: relative; width: 100%; height: 300px; margin-bottom: 20px; background: #0f1221; border-radius: 12px; overflow: hidden; display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.3); }
.carousel-btn { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(0,0,0,0.5); border: none; color: white; padding: 12px; cursor: pointer; border-radius: 50%; transition: background 0.2s; }
.carousel-btn:hover { background: rgba(255,255,255,0.2); }
.carousel-btn.prev { left: 10px; }
.carousel-btn.next { right: 10px; }
.modal-desc { margin-bottom: 24px; color: var(--text-muted); line-height: 1.5; }
.modal-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn { padding: 10px 20px; border-radius: 8px; border: none; cursor: pointer; font-weight: 500; transition: all 0.2s; text-decoration: none; display: inline-flex; align-items: center; gap: 6px; }
.btn-primary { background: linear-gradient(135deg, var(--blue), var(--purple)); color: white; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(59, 108, 255, 0.4); }
.btn-secondary { background: var(--glass); border: 1px solid var(--glass-border); color: white; }
.btn-secondary:hover { background: rgba(255,255,255,0.1); }
.video-placeholder { width: 100%; height: 180px; background: #0f1221; border-radius: 12px; margin-bottom: 20px; display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.4); border: 1px dashed var(--glass-border); }

.contact-container { max-width: 600px; width: 100%; text-align: center; }
.contact-toggle { background: linear-gradient(135deg, var(--orange), var(--pink)); color: white; border: none; padding: 12px 28px; border-radius: 50px; font-size: 1rem; font-weight: 600; cursor: pointer; margin-bottom: 20px; transition: transform 0.2s, box-shadow 0.2s; }
.contact-toggle:hover { transform: scale(1.05); box-shadow: 0 8px 24px rgba(255, 159, 28, 0.4); }
.contact-form-wrapper { max-height: 0; overflow: hidden; transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s; opacity: 0; }
.contact-form-wrapper.open { max-height: 600px; opacity: 1; }
.contact-form { background: var(--glass); border: 1px solid var(--glass-border); border-radius: 16px; padding: 24px; text-align: left; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-size: 0.9rem; color: var(--text-muted); }
.form-group input, .form-group textarea { width: 100%; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--glass-border); background: rgba(0,0,0,0.3); color: white; font-family: inherit; transition: border-color 0.2s, box-shadow 0.2s; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(59, 108, 255, 0.2); }
.chat-section { margin-top: 24px; padding: 20px; background: rgba(255,255,255,0.03); border-radius: 12px; border: 1px solid var(--glass-border); display: none; }
.chat-section.active { display: block; animation: fadeIn 0.4s; }
.chat-messages { height: 150px; overflow-y: auto; margin-bottom: 12px; padding: 10px; background: rgba(0,0,0,0.2); border-radius: 8px; }
.chat-msg { margin-bottom: 8px; padding: 8px 12px; border-radius: 8px; max-width: 80%; }
.chat-msg.client { background: rgba(59, 108, 255, 0.3); align-self: flex-end; margin-left: auto; }
.chat-msg.system { background: rgba(255,255,255,0.1); }

.auth-container, .dashboard-container { max-width: 450px; width: 100%; background: var(--glass); border: 1px solid var(--glass-border); border-radius: 20px; padding: 32px; text-align: center; backdrop-filter: blur(12px); }
.auth-container h2, .dashboard-container h2 { margin-bottom: 20px; }
.auth-container input { width: 100%; padding: 12px; margin-bottom: 12px; border-radius: 8px; border: 1px solid var(--glass-border); background: rgba(0,0,0,0.3); color: white; }
.auth-container button { width: 100%; padding: 12px; border-radius: 8px; border: none; background: linear-gradient(135deg, var(--blue), var(--purple)); color: white; font-weight: 600; cursor: pointer; transition: transform 0.2s; }
.auth-container button:hover { transform: translateY(-2px); }
.dashboard-tabs { display: flex; gap: 10px; margin-bottom: 20px; justify-content: center; }
.tab-btn { padding: 8px 16px; border-radius: 6px; background: transparent; border: 1px solid var(--glass-border); color: var(--text-muted); cursor: pointer; transition: all 0.2s; }
.tab-btn.active { background: rgba(59, 108, 255, 0.2); border-color: var(--blue); color: white; }
.tab-content { display: none; text-align: left; }
.tab-content.active { display: block; animation: fadeIn 0.3s; }
.file-item { padding: 10px; background: rgba(255,255,255,0.05); border-radius: 8px; margin-bottom: 8px; display: flex; justify-content: space-between; align-items: center; }
.file-item a { color: var(--blue); text-decoration: none; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.seo { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.pulse { display: inline-flex; gap: 6px; }
.pulse span { width: 8px; height: 8px; background: linear-gradient(135deg, var(--orange), var(--yellow)); animation: pulse 1.4s infinite ease-in-out; }
.pulse span:nth-child(2) { animation-delay: 0.15s; }
.pulse span:nth-child(3) { animation-delay: 0.3s; }
.pulse span:nth-child(4) { animation-delay: 0.45s; }
@keyframes pulse { 0% { transform: scale(0.8); opacity: 0.4; } 50% { transform: scale(1.6); opacity: 1; } 100% { transform: scale(0.8); opacity: 0.4; } }

@media (max-width: 850px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .mobile-menu { display: flex; }
  .about-grid { grid-template-columns: 1fr; }
  .modal-content { width: 95%; max-height: 90vh; }
  .section-title { font-size: 2rem; }
}