/* =========================================================
   GLOBAL RESET
========================================================= */

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background: radial-gradient(circle at top left, #0f0f1a, #050510 70%);
  color: #ffffff;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 16px;
}

/* =========================================================
   HEADER (Dark Tech)
========================================================= */

.site-header {
  position: sticky;
  top: 20px;
  margin: 0 auto;
  width: 90%;
  border-radius: 14px;
  backdrop-filter: blur(15px);
  background: rgba(10,10,20,0.6);
  box-shadow: 0 0 25px rgba(0,255,255,0.2);
  z-index: 1000;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 20px;
  font-weight: bold;
}

.logo span {
  background: linear-gradient(90deg, #00f5ff, #8a2be2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-nav a {
  margin-left: 18px;
  font-size: 14px;
  opacity: 0.8;
  transition: opacity 0.2s ease;
}

.header-nav a:hover {
  opacity: 1;
}

.btn-primary {
  background: linear-gradient(90deg, #00f5ff, #8a2be2);
  color: #fff;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  box-shadow: 0 0 12px rgba(0,255,255,0.4);
  transition: all 0.3s ease;
}

.btn-primary:hover {
  box-shadow: 0 0 25px rgba(0,255,255,0.8);
  transform: translateY(-2px);
}

/* =========================================================
   HERO SECTION (Neon Tech)
========================================================= */

.hero {
  text-align: center;
  padding: 120px 20px;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-inner {
  width: 100%;
}

.hero h1 {
  font-size: 52px;
  font-weight: 700;
  background: linear-gradient(90deg, #00f5ff, #8a2be2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 18px;
  opacity: 0.75;
  margin-bottom: 60px;
}

/* =========================================================
   UPLOAD BOX (Neon Glass)
========================================================= */

.upload-box {
  background: rgba(255,255,255,0.04);
  border: 2px solid rgba(0,255,255,0.4);
  border-radius: 20px;
  padding: 60px 30px;
  max-width: 520px;
  margin: auto;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(18px);
  box-shadow: 0 0 20px rgba(0,255,255,0.2);
  position: relative;
  overflow: hidden;
}

.upload-box:hover {
  transform: translateY(-6px);
  box-shadow: 0 0 35px rgba(0,255,255,0.6);
}

.upload-box.dragging {
  border-color: #22c55e;
  box-shadow: 0 0 35px rgba(34,197,94,0.7);
}

.upload-icon {
  font-size: 42px;
  margin-bottom: 20px;
  animation: floatIcon 3s infinite ease-in-out;
}

@keyframes floatIcon {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
  100% { transform: translateY(0px); }
}

.upload-title {
  font-size: 18px;
  font-weight: 600;
}

.upload-hint {
  opacity: 0.6;
  margin-top: 10px;
}

/* =========================================================
   PROGRESS BAR
========================================================= */

.progress-container {
  width: 100%;
  height: 6px;
  background: rgba(255,255,255,0.1);
  border-radius: 50px;
  margin-top: 20px;
  overflow: hidden;
  display: none;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #00f5ff, #8a2be2);
  transition: width 0.3s ease;
}

/* =========================================================
   STATUS STATES
========================================================= */

.upload-box.loading {
  border-color: #facc15;
}

.upload-box.success {
  border-color: #00ff9d;
  box-shadow: 0 0 40px rgba(0,255,157,0.7);
  animation: successPulse 0.8s ease;
}

@keyframes successPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.upload-box.error {
  border-color: #ff0055;
  box-shadow: 0 0 30px rgba(255,0,85,0.6);
}

/* =========================================================
   TOOL GRID (Dark Cards)
========================================================= */

.tools {
  padding: 60px 0;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
}

.tool-card {
  background: rgba(255,255,255,0.05);
  border-radius: 16px;
  padding: 28px 18px;
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid rgba(255,255,255,0.08);
}

.tool-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 0 30px rgba(0,255,255,0.4);
}

.tool-icon {
  font-size: 28px;
  margin-bottom: 10px;
}

.tool-name {
  font-weight: 600;
  font-size: 15px;
}

/* =========================================================
   FOOTER
========================================================= */

.site-footer {
  background: rgba(10,10,20,0.9);
  border-top: 1px solid rgba(255,255,255,0.08);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}

.footer-links a {
  margin-right: 18px;
  font-size: 14px;
  opacity: 0.7;
}

.footer-links a:hover {
  opacity: 1;
}

.footer-copy {
  font-size: 14px;
  opacity: 0.6;
  margin-top: 8px;
}

/* =========================================================
   SEO CONTENT (Dark)
========================================================= */

.seo-content {
  padding: 60px 0;
}

.seo-content h2,
.seo-content h3 {
  color: #00f5ff;
}

.seo-content ul {
  margin-top: 10px;
  padding-left: 20px;
}

/* =========================================================
   RESPONSIVE
========================================================= */

@media (max-width: 600px) {
  .hero h1 {
    font-size: 34px;
  }

  .footer-inner {
    flex-direction: column;
  }
}
/* =========================================================
   AI CYBER GRID BACKGROUND
========================================================= */

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,255,255,0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: -2;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  from { background-position: 0 0, 0 0; }
  to { background-position: 0 40px, 40px 0; }
}
/* =========================================================
   FLOATING PARTICLES
========================================================= */

.particles {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}

.particles::before,
.particles::after {
  content: "";
  position: absolute;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0,255,255,0.08) 1px, transparent 1px);
  background-size: 80px 80px;
  animation: particlesMove 60s linear infinite;
}

.particles::after {
  animation-duration: 90s;
  opacity: 0.5;
}

@keyframes particlesMove {
  from { transform: translate(0,0); }
  to { transform: translate(-50px,-50px); }
}
/* =========================================================
   PAGE FADE TRANSITION
========================================================= */

body {
  animation: fadeInPage 0.6s ease forwards;
}

@keyframes fadeInPage {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes popFile {
  0% { transform: scale(0.9); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}
/* ================= DROPDOWN ================= */

.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-toggle {
  background: transparent;
  border: none;
  color: #fff;
  font-size: 14px;
  cursor: pointer;
}

.dropdown-menu {
  position: absolute;
  top: 35px;
  left: 0;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  border-radius: 12px;
  padding: 12px 0;
  min-width: 200px;
  display: none;
  box-shadow: 0 10px 40px rgba(0,0,0,0.5);
}

.dropdown-menu a {
  display: block;
  padding: 10px 16px;
  color: #fff;
  font-size: 14px;
  transition: background 0.2s ease;
}

.dropdown-menu a:hover {
  background: rgba(255,255,255,0.05);
}

.dropdown:hover .dropdown-menu {
  display: block;
}