* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', Roboto, Helvetica, sans-serif; }
body { background-color: #05010a; color: #e0d4f5; min-height: 100vh; overflow-x: hidden; position: relative; }
.stars { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background-image: radial-gradient(2px 2px at 20px 30px, #ffffff, rgba(0,0,0,0)), radial-gradient(2px 2px at 40px 70px, #ffffff, rgba(0,0,0,0)), radial-gradient(2px 2px at 50px 160px, #ffffff, rgba(0,0,0,0)), radial-gradient(2px 2px at 90px 40px, #ffffff, rgba(0,0,0,0)); background-repeat: repeat; background-size: 200px 200px; animation: drift 100s linear infinite; z-index: -2; opacity: 0.4; }
@keyframes drift { from { transform: translateY(0); } to { transform: translateY(-200px); } }
.glow-orb { position: fixed; border-radius: 50%; filter: blur(100px); z-index: -1; animation: float 10s infinite alternate ease-in-out; }
.orb-1 { width: 400px; height: 400px; background: rgba(138, 43, 226, 0.4); top: -100px; left: -100px; }
.orb-2 { width: 500px; height: 500px; background: rgba(75, 0, 130, 0.4); bottom: -150px; right: -100px; animation-delay: -5s; }
@keyframes float { 0% { transform: translate(0, 0); } 100% { transform: translate(30px, 50px); } }
.glass-panel { background: rgba(255, 255, 255, 0.03); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: 20px; padding: 2rem; box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5); transition: transform 0.3s ease, box-shadow 0.3s ease; }
.glass-panel:hover { box-shadow: 0 8px 32px 0 rgba(138, 43, 226, 0.2); }
.navbar { display: flex; justify-content: space-between; align-items: center; padding: 1.2rem 5%; background: rgba(15, 5, 30, 0.85); backdrop-filter: blur(20px); border-bottom: 1px solid rgba(177, 84, 255, 0.4); box-shadow: 0 4px 30px rgba(138, 43, 226, 0.3); position: sticky; top: 0; z-index: 100; }
.logo { font-size: 2rem; font-weight: 900; background: linear-gradient(90deg, #d18aff, #4da6ff, #d18aff); background-size: 200% auto; -webkit-background-clip: text; -webkit-text-fill-color: transparent; letter-spacing: 2px; animation: shine 3s linear infinite; }
@keyframes shine { to { background-position: 200% center; } }
.nav-links { list-style: none; display: flex; gap: 2.5rem; align-items: center; }
.nav-links a { color: #a99ec2; text-decoration: none; font-weight: 600; font-size: 1.1rem; padding: 0.5rem 1rem; border-radius: 10px; transition: all 0.4s ease; display: block; }
.nav-links a:hover, .nav-links a.active { color: #ffffff; background: rgba(177, 84, 255, 0.15); box-shadow: 0 0 15px rgba(177, 84, 255, 0.3); transform: translateY(-2px); }
.hamburger { display: none; cursor: pointer; flex-direction: column; gap: 6px; z-index: 101; padding: 5px; }
.hamburger span { width: 35px; height: 4px; background: linear-gradient(90deg, #b154ff, #4da6ff); border-radius: 4px; transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55); }
main { padding: 2rem 5%; display: flex; flex-direction: column; gap: 2rem; }
h1, h2 { margin-bottom: 1.5rem; text-align: center; color: #ffffff; font-weight: 600; text-shadow: 0 0 10px rgba(177, 84, 255, 0.5); }
.drop-zone { border: 2px dashed rgba(138, 43, 226, 0.5); border-radius: 15px; padding: 3rem; text-align: center; cursor: pointer; transition: all 0.3s ease; position: relative; overflow: hidden; background: rgba(0,0,0,0.2); }
.drop-zone:hover, .drop-zone.dragover { background: rgba(138, 43, 226, 0.15); border-color: #4da6ff; box-shadow: 0 0 20px rgba(77, 166, 255, 0.2) inset; }
.icon-pulse { width: 60px; height: 60px; background: linear-gradient(135deg, #b154ff, #4da6ff); border-radius: 50%; margin: 0 auto 1.5rem; position: relative; animation: pulse 2s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(177, 84, 255, 0.7); } 70% { box-shadow: 0 0 0 20px rgba(177, 84, 255, 0); } 100% { box-shadow: 0 0 0 0 rgba(177, 84, 255, 0); } }
.workspace { display: grid; grid-template-columns: 1fr 2fr; gap: 2rem; height: 600px; }
.file-list-container, .viewer-container { height: 100%; overflow-y: auto; display: flex; flex-direction: column; }
.file-list-container::-webkit-scrollbar, .viewer-container::-webkit-scrollbar { width: 8px; }
.file-list-container::-webkit-scrollbar-track, .viewer-container::-webkit-scrollbar-track { background: rgba(255,255,255,0.05); border-radius: 4px; }
.file-list-container::-webkit-scrollbar-thumb, .viewer-container::-webkit-scrollbar-thumb { background: rgba(177, 84, 255, 0.5); border-radius: 4px; }
.file-item { background: rgba(255, 255, 255, 0.05); padding: 1rem; border-radius: 10px; margin-bottom: 0.5rem; cursor: pointer; transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1); border: 1px solid transparent; display: flex; align-items: center; justify-content: space-between; }
.file-item:hover { background: rgba(177, 84, 255, 0.2); border-color: rgba(77, 166, 255, 0.5); transform: translateX(10px) scale(1.02); box-shadow: -5px 5px 15px rgba(0,0,0,0.3); }
.viewer-container { justify-content: center; align-items: center; }
.empty-state { color: #8a7b9d; font-size: 1.2rem; }
iframe, img { width: 100%; height: 100%; border: none; border-radius: 10px; object-fit: contain; }
.download-btn { padding: 12px 25px; background: linear-gradient(90deg, #b154ff, #4da6ff); border: none; border-radius: 30px; color: white; cursor: pointer; font-size: 1.1rem; font-weight: bold; text-decoration: none; display: inline-block; margin-top: 1rem; transition: all 0.3s ease; box-shadow: 0 4px 15px rgba(177, 84, 255, 0.4); text-transform: uppercase; letter-spacing: 1px; }
.download-btn:hover { transform: translateY(-3px) scale(1.05); box-shadow: 0 8px 25px rgba(77, 166, 255, 0.6); }
@media (max-width: 768px) {
.workspace { grid-template-columns: 1fr; height: auto; }
.file-list-container { max-height: 350px; }
.viewer-container { height: 450px; }
.hamburger { display: flex; }
.nav-links { position: fixed; top: 0; right: -100%; width: 70%; height: 100vh; background: rgba(10, 2, 20, 0.98); backdrop-filter: blur(25px); flex-direction: column; justify-content: center; align-items: center; transition: right 0.5s cubic-bezier(0.77, 0, 0.175, 1); box-shadow: -10px 0 30px rgba(0,0,0,0.5); z-index: 100; gap: 3rem; border-left: 1px solid rgba(177, 84, 255, 0.3); }
.nav-links.active { right: 0; }
.hamburger { z-index: 105; }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(8px, 8px); background: #4da6ff; }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(6px, -6px); background: #4da6ff; }
.nav-links a { font-size: 1.5rem; padding: 1rem 2rem; width: 100%; text-align: center; }
}