/* ============================================================================
   STRIKE - PREMIUM COURSE PLATFORM
   Coder Army CSS Hackathon 2025 Submission
   Pure CSS Design with Cyberpunk Aesthetics
   ============================================================================ */

/* ============ CSS VARIABLES & COLOR PALETTE ============ */
:root {
  /* Core Colors */
  --cyber-primary: #00ffff;
  --cyber-secondary: #ff0080;
  --cyber-accent: #ffff00;
  --cyber-success: #00ff88;
  --cyber-warning: #ff6b00;
  --cyber-dark: #0a0a0f;
  --cyber-darker: #050507;
  --cyber-glass: rgba(0, 255, 255, 0.05);
  
  /* Text Colors */
  --text-primary: #e0f6ff;
  --text-secondary: #8dd5f5;
  --text-dim: #4a9cc9;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--cyber-primary) 0%, var(--cyber-secondary) 100%);
  --gradient-accent: linear-gradient(45deg, var(--cyber-accent) 0%, var(--cyber-primary) 100%);
  --gradient-success: linear-gradient(135deg, var(--cyber-success) 0%, var(--cyber-primary) 100%);
  --gradient-glow: radial-gradient(circle at center, var(--cyber-primary) 0%, transparent 70%);
  
  /* Typography */
  --font-primary: 'Orbitron', monospace;
  --font-secondary: 'Inter', sans-serif;
  
  /* Spacing & Sizing */
  --section-padding: clamp(3rem, 8vw, 6rem);
  --container-max: 1200px;
  
  /* Animation Timings */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.4s ease;
  --transition-slow: 0.8s ease;

  --portrait-bg: #0a0a0f; /* your requested background */
  --dsablue: #00d4ff;
  --genai-magenta: #ff3bd6;
  --portrait-width: 420px; /* desktop width */
  --portrait-height: 560px; /* desktop height */
}

/* ============ RESET & BASE STYLES ============ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: clamp(14px, 2vw, 16px);
}

body {
  font-family: var(--font-secondary);
  background: var(--cyber-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* ============ HACKATHON BANNER ============ */
.hackathon-banner {
  /* margin-bottom: 1rem; */
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: linear-gradient(90deg, var(--cyber-dark) 0%, #1a0a2e 50%, var(--cyber-dark) 100%);
  border-bottom: 2px solid var(--cyber-primary);
  padding: 0.5rem 1rem;
  z-index: 2000;
  backdrop-filter: blur(20px);
  box-shadow: 0 2px 20px rgba(0, 255, 255, 0.3);
}

.banner-content {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.live-indicator {
  background: var(--cyber-warning);
  color: var(--cyber-dark);
  padding: 0.2rem 0.8rem;
  border-radius: 15px;
  font-weight: 700;
  font-size: 0.8rem;
  animation: live-pulse 2s ease-in-out infinite;
}

@keyframes live-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.hackathon-title {
  font-family: var(--font-primary);
  font-size: 1rem;
  color: var(--cyber-primary);
  font-weight: 700;
  text-shadow: 0 0 10px var(--cyber-primary);
}

.countdown-timer,
.deadline-timer {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.timer-unit {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--cyber-glass);
  border: 1px solid var(--cyber-primary);
  border-radius: 8px;
  padding: 0.3rem 0.5rem;
  min-width: 40px;
}

.timer-number {
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 700;
  color: var(--cyber-accent);
  text-shadow: 0 0 5px var(--cyber-accent);
}

.timer-label {
  font-size: 0.7rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============ MATRIX PARTICLE BACKGROUND ============ */
.matrix-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  pointer-events: none;
  overflow: hidden;
}

.matrix-layer {
  position: absolute;
  width: 120%;
  height: 120%;
  opacity: 0.4;
}

.matrix-layer::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 20% 80%, var(--cyber-primary) 1px, transparent 1px),
    radial-gradient(circle at 80% 20%, var(--cyber-secondary) 1px, transparent 1px);
  background-size: 50px 50px, 70px 70px;
  animation: matrix-drift 20s linear infinite;
}

.layer-1::before {
  background-size: 40px 40px, 60px 60px;
  animation-duration: 15s;
  opacity: 0.6;
}

.layer-2::before {
  background-size: 60px 60px, 80px 80px;
  animation-duration: 25s;
  animation-direction: reverse;
  opacity: 0.3;
}

.layer-3::before {
  background-size: 80px 80px, 100px 100px;
  animation-duration: 30s;
  opacity: 0.2;
}

@keyframes matrix-drift {
  0% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(-2%, -1%) rotate(0.5deg); }
  66% { transform: translate(1%, -2%) rotate(-0.3deg); }
  100% { transform: translate(0, 0) rotate(0deg); }
}

/* ============ ENERGY FLOW LINES ============ */
.energy-flow {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

.flow-line {
  position: absolute;
  background: var(--gradient-primary);
  border-radius: 2px;
  opacity: 0.3;
  animation: energy-pulse 3s ease-in-out infinite;
}

.line-1 {
  width: 2px;
  height: 300px;
  top: 20%;
  left: 10%;
  animation-delay: 0s;
  transform: rotate(15deg);
}

.line-2 {
  width: 1px;
  height: 200px;
  top: 60%;
  right: 15%;
  animation-delay: 1s;
  transform: rotate(-25deg);
}

.line-3 {
  width: 1px;
  height: 250px;
  bottom: 20%;
  left: 70%;
  animation-delay: 2s;
  transform: rotate(45deg);
}

@keyframes energy-pulse {
  0%, 100% { opacity: 0.1; filter: brightness(0.8); }
  50% { opacity: 0.4; filter: brightness(1.5); }
}

/* ============ NAVIGATION ============ */
.cybernav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 255, 255, 0.2);
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  font-family: var(--font-primary);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--cyber-primary);
  text-shadow: 0 0 10px var(--cyber-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-symbol {
  font-size: 1.8rem;
  animation: symbol-glow 2s ease-in-out infinite alternate;
}

.beta-tag {
  background: var(--gradient-accent);
  color: var(--cyber-dark);
  padding: 0.2rem 0.5rem;
  border-radius: 10px;
  font-size: 0.7rem;
  font-weight: 700;
  margin-left: 0.5rem;
}

@keyframes symbol-glow {
  0% { color: var(--cyber-primary); }
  100% { color: var(--cyber-secondary); }
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  position: relative;
  transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus {
  color: var(--cyber-primary);
  text-shadow: 0 0 5px var(--cyber-primary);
}

.nav-cta {
  background: var(--gradient-success);
  padding: 0.5rem 1.5rem;
  border-radius: 25px;
  color: var(--cyber-dark) !important;
  font-weight: 700;
  box-shadow: 0 0 20px rgba(0, 255, 136, 0.3);
  transition: var(--transition-normal);
}

.nav-cta:hover {
  transform: scale(1.05);
  box-shadow: 0 0 30px rgba(0, 255, 136, 0.5);
}

/* ============ HERO SECTION ============ */
.hero-zone {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space;
  position: relative;
  text-align: center;
  perspective: 1000px;
  overflow: hidden;
  margin-top: 6rem;
  padding-top: 2rem;
}

.hero-zone::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-glow);
  opacity: 0.1;
  filter: blur(100px);
  z-index: -1;
}

.hero-content {
  z-index: 2;
  max-width: 800px;
  padding: 2rem;
}

.hackathon-intro {
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: content-fade 1s ease-out 0.5s forwards;
}

.intro-title {
  font-family: var(--font-secondary);
  font-size: 1.2rem;
  color: var(--text-secondary);
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* Animated Title Reveal */
.title-reveal {
  margin-bottom: 2rem;
}

.cyber-title {
  font-family: var(--font-primary);
  font-size: clamp(3rem, 12vw, 8rem);
  font-weight: 900;
  line-height: 0.9;
  margin-bottom: 0.5rem;
  position: relative;
  white-space: nowrap;
}

.title-char {
  display: inline-block;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: char-reveal 1s ease-out forwards;
  animation-delay: calc(var(--i) * 0.1s + 0.8s);
  transform: translateY(100px) rotateX(90deg);
  opacity: 0;
  filter: drop-shadow(0 0 20px var(--cyber-primary));
}

@keyframes char-reveal {
  0% {
    transform: translateY(100px) rotateX(90deg);
    opacity: 0;
  }
  100% {
    transform: translateY(0) rotateX(0deg);
    opacity: 1;
  }
}

.title-subtitle {
  font-family: var(--font-primary);
  font-size: clamp(1rem, 4vw, 2rem);
  color: var(--cyber-secondary);
  text-transform: uppercase;
  letter-spacing: 0.3em;
  opacity: 0;
  animation: subtitle-fade 1s ease-out 1.4s forwards;
}

@keyframes subtitle-fade {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.premium-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  background: var(--cyber-glass);
  border: 2px solid var(--cyber-accent);
  border-radius: 25px;
  padding: 0.8rem 1.5rem;
  margin-bottom: 2rem;
  backdrop-filter: blur(10px);
  opacity: 0;
  animation: content-fade 1s ease-out 1.6s forwards;
}

.premium-text {
  font-family: var(--font-primary);
  color: var(--cyber-accent);
  font-weight: 700;
  font-size: 1.1rem;
  text-shadow: 0 0 10px var(--cyber-accent);
}

.coming-soon {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 600;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  opacity: 0;
  animation: content-fade 1s ease-out 1.8s forwards;
}

@keyframes content-fade {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Quantum Button */
.quantum-btn {
  position: relative;
  background: transparent;
  border: 2px solid var(--cyber-primary);
  padding: 1rem 2.5rem;
  font-family: var(--font-primary);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--cyber-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  overflow: hidden;
  transition: var(--transition-normal);
  opacity: 0;
  animation: content-fade 1s ease-out 2s forwards;
}

.quantum-btn:hover {
  color: var(--cyber-dark);
  box-shadow: 0 0 30px var(--cyber-primary);
  transform: scale(1.05);
}

.btn-glow {
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: var(--transition-normal);
  z-index: -1;
}

.quantum-btn:hover .btn-glow {
  opacity: 1;
}

.btn-text {
  position: relative;
  z-index: 1;
}
/* ---- Instructor portrait container ---- */
.instructor-portrait {
  position: absolute;
  right: 6vw;                 /* distance from right edge - tweak as needed */
  top: 50%;
  transform: translateY(-50%);
  width: var(--portrait-width);
  height: var(--portrait-height);
  max-width: 36vw;
  max-height: 75vh;
  background: var(--portrait-bg);
  border-radius: 18px;
  box-shadow:
    0 20px 60px rgba(0,0,0,0.7),
    0 0 60px rgba(0,0,0,0.6) inset;
  overflow: hidden;
  z-index: 3; /* above hero-content but below holo-prism if needed */
  display: block;
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.04);
  isolation: isolate;
}

/* the img inside - cover the box, focus center */
.instructor-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transform-origin: center;
  filter: contrast(1.05) saturate(1.08);
  background-color: var(--portrait-bg); /* fallback background */
}

/* soft neon split glow overlay (center line + gradient bleed) */
.instructor-portrait .split-glow {
  position: absolute;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  width: 3px; /* main split line thickness */
  height: 100%;
  pointer-events: none;
  z-index: 4;
  mix-blend-mode: screen;
  background: linear-gradient(
    180deg,
    rgba(255,255,255,0.08) 0%,
    rgba(255,255,255,0.02) 45%,
    rgba(255,255,255,0.08) 100%
  );
}

/* colored glow blades (left blue, right magenta) */
.instructor-portrait::before,
.instructor-portrait::after {
  content: "";
  position: absolute;
  top: -10%;
  height: 120%;
  width: 40%;
  z-index: 2;
  pointer-events: none;
  filter: blur(28px);
  opacity: 0.85;
}

.instructor-portrait::before {
  left: -4%;
  background: linear-gradient(120deg, rgba(0,212,255,0.25), rgba(0,212,255,0.02));
  mix-blend-mode: screen;
  transform: skewX(-10deg);
}

.instructor-portrait::after {
  right: -4%;
  background: linear-gradient(260deg, rgba(255,59,214,0.25), rgba(255,59,214,0.02));
  mix-blend-mode: screen;
  transform: skewX(10deg);
}

/* subtle inner neon border */
.instructor-portrait:focus,
.instructor-portrait:hover {
  outline: none;
  transform: translateY(-50%) scale(1.02);
  transition: transform 300ms ease;
}
.instructor-portrait::marker { content: none; }

/* very thin neon rim to separate from background */
.instructor-portrait .rim {
  position: absolute;
  inset: 1px;
  pointer-events: none;
  border-radius: 16px;
  z-index: 5;
  background: linear-gradient(90deg, rgba(0,212,255,0.06), rgba(255,59,214,0.06));
  mix-blend-mode: screen;
}

/* accessibility helper to hide figcaption visually */
.sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* RESPONSIVE: hide portrait on small screens */
@media (max-width: 900px) {
  .instructor-portrait {
    display: none;
  }
}

/* Tweak for very wide screens: increase size and move more right */
@media (min-width: 1600px) {
  .instructor-portrait {
    width: 520px;
    height: 680px;
    right: 8vw;
  }
}

/* ============ SECTION STYLES ============ */
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-family: var(--font-primary);
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1rem;
}

.section-underline {
  width: 100px;
  height: 3px;
  background: var(--gradient-accent);
  margin: 0 auto;
  border-radius: 2px;
  position: relative;
}

.section-underline::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-accent);
  filter: blur(5px);
  opacity: 0.5;
}

/* ============ FEATURES SECTION ============ */
.features-zone {
  padding: var(--section-padding) 2rem;
  max-width: var(--container-max);
  margin: 0 auto;
}

.features-diagonal {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
}

.feature-node {
  position: relative;
  background: var(--cyber-glass);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255, 0, 128, 0.2);
  border-radius: 15px;
  padding: 2.5rem 1.5rem;
  text-align: center;
  transition: var(--transition-normal);
  overflow: hidden;
}

.feature-node:hover {
  transform: translateY(-15px) scale(1.05);
  border-color: var(--cyber-secondary);
  box-shadow: 0 25px 50px rgba(255, 0, 128, 0.2);
}

.certificate-feature {
  grid-column: span 2;
}

.node-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, var(--cyber-secondary) 0%, transparent 70%);
  opacity: 0;
  transition: var(--transition-normal);
  filter: blur(30px);
}

.feature-node:hover .node-glow {
  opacity: 0.1;
}

.feature-icon {
  font-size: 3rem;
  color: var(--cyber-secondary);
  margin-bottom: 1.5rem;
  filter: drop-shadow(0 0 10px var(--cyber-secondary));
  transition: var(--transition-normal);
}

.feature-node:hover .feature-icon {
  color: var(--cyber-accent);
  transform: scale(1.1);
  filter: drop-shadow(0 0 20px var(--cyber-accent));
}

.feature-title {
  font-family: var(--font-primary);
  font-size: 1.3rem;
  color: var(--cyber-primary);
  margin-bottom: 1rem;
}

.feature-desc {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============ MENTORS SECTION ============ */
.mentors-zone {
  padding: var(--section-padding) 2rem;
  max-width: var(--container-max);
  margin: 0 auto;
}

.mentors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  justify-items: center;
}

.mentor-holo {
  position: relative;
  background: var(--cyber-glass);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(0, 255, 255, 0.2);
  border-radius: 20px;
  padding: 2rem;
  text-align: center;
  transition: var(--transition-normal);
  max-width: 350px;
  width: 100%;
}

.mentor-holo:hover {
  transform: translateY(-10px) scale(1.02);
  border-color: var(--cyber-primary);
  box-shadow: 0 20px 40px rgba(0, 255, 255, 0.2);
}

.pulse-border {
  position: absolute;
  inset: -2px;
  background: var(--gradient-primary);
  border-radius: 22px;
  opacity: 0;
  animation: pulse-glow 2s ease-in-out infinite;
  z-index: -1;
}

.mentor-holo:hover .pulse-border {
  opacity: 0.3;
}

@keyframes pulse-glow {
  0%, 100% { transform: scale(1); opacity: 0.1; }
  50% { transform: scale(1.02); opacity: 0.3; }
}

.mentor-avatar {
  position: relative;
  width: 120px;
  height: 120px;
  margin: 0 auto 1.5rem;
}

.mentor-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--cyber-primary);
  filter: saturate(1.2) contrast(1.1);
}

.avatar-ring {
  position: absolute;
  inset: -5px;
  border: 2px solid var(--cyber-secondary);
  border-radius: 50%;
  opacity: 0;
  animation: ring-rotate 3s linear infinite;
}

.mentor-holo:hover .avatar-ring {
  opacity: 0.6;
}

@keyframes ring-rotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.mentor-name {
  font-family: var(--font-primary);
  font-size: 1.5rem;
  color: var(--cyber-primary);
  margin-bottom: 0.5rem;
}

.mentor-role {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 1rem;
}

.mentor-tags {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.skill-tag {
  background: rgba(0, 255, 255, 0.1);
  color: var(--cyber-primary);
  padding: 0.3rem 0.8rem;
  border-radius: 15px;
  font-size: 0.8rem;
  border: 1px solid rgba(0, 255, 255, 0.3);
}

/* ============ ROADMAP SECTION ============ */
.roadmap-zone {
  padding: var(--section-padding) 2rem;
  max-width: var(--container-max);
  margin: 0 auto;
}

.timeline-container {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline-rail {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: 2px;
  z-index: 1;
  box-shadow: 0 0 10px var(--cyber-primary);
}

.timeline-rail::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  filter: blur(5px);
  opacity: 0.5;
}

.timeline-node {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 25%;
  float: left;
  z-index: 2;
}

.timeline-node:nth-child(odd) .node-label {
  margin-top: 3rem;
}

.timeline-node:nth-child(even) .node-label {
  margin-bottom: 3rem;
  order: -1;
}

.node-core {
  width: 20px;
  height: 20px;
  background: var(--gradient-accent);
  border-radius: 50%;
  border: 3px solid var(--cyber-dark);
  cursor: pointer;
  transition: var(--transition-normal);
  position: relative;
}

.node-core::after {
  content: '';
  position: absolute;
  inset: -10px;
  border: 2px solid var(--cyber-accent);
  border-radius: 50%;
  opacity: 0;
  transition: var(--transition-normal);
}

.timeline-node:hover .node-core {
  transform: scale(1.3);
  box-shadow: 0 0 20px var(--cyber-accent);
}

.timeline-node:hover .node-core::after {
  opacity: 0.6;
  transform: scale(1.5);
}

.node-label {
  background: var(--cyber-glass);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 0, 0.3);
  border-radius: 10px;
  padding: 1rem;
  text-align: center;
  min-width: 150px;
  transition: var(--transition-normal);
}

.timeline-node:hover .node-label {
  border-color: var(--cyber-accent);
  box-shadow: 0 10px 30px rgba(255, 255, 0, 0.2);
}

.node-label h4 {
  font-family: var(--font-primary);
  color: var(--cyber-accent);
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.node-label p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
}

/* ============ THEMES SECTION ============ */
.themes-zone {
  padding: var(--section-padding) 2rem;
  max-width: var(--container-max);
  margin: 0 auto;
  background: rgba(0, 255, 255, 0.02);
  border-radius: 30px;
  border: 1px solid rgba(0, 255, 255, 0.1);
}

/* Section Header */
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title {
  font-family: var(--font-primary);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--cyber-accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  display: inline-block;
  position: relative;
  line-height: 1.1;
}

.section-title .highlight {
  color: #ffea00;
  text-shadow: 0 0 10px #ffea00, 0 0 20px #ffea00, 0 0 40px #ffea00;
  animation: blink-glow 2s infinite alternate;
}

@keyframes blink-glow {
  0% { opacity: 1; text-shadow: 0 0 10px #ffea00, 0 0 20px #ffea00; }
  100% { opacity: 0.6; text-shadow: 0 0 5px #ffea00; }
}

.section-underline {
  width: 100px;
  height: 3px;
  background: var(--cyber-accent);
  margin: 1rem auto 0;
  border-radius: 10px;
}

/* Themes Grid */
.themes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.theme-card {
  background: var(--cyber-glass);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255, 255, 0, 0.2);
  border-radius: 15px;
  padding: 2rem;
  text-align: center;
  transition: var(--transition-normal);
}

.theme-card:hover {
  transform: translateY(-5px);
  border-color: var(--cyber-accent);
  box-shadow: 0 15px 40px rgba(255, 255, 0, 0.2);
}

.theme-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  filter: drop-shadow(0 0 10px var(--cyber-accent));
}
.theme-icon img {
  width: 300px;
  height: 300px;
  object-fit: contain;
}
.theme-card h3 {
  font-family: var(--font-primary);
  color: var(--cyber-accent);
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.theme-card p {
  color: var(--text-secondary);
}


/* ============ SUBMISSION SECTION ============ */
.submit-zone {
  padding: var(--section-padding) 2rem;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.submit-container {
  position: relative;
  max-width: 800px;
  width: 100%;
}

.comet-trail {
  position: absolute;
  top: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  background: radial-gradient(ellipse at center, var(--cyber-success) 0%, transparent 70%);
  border-radius: 50%;
  opacity: 0.1;
  animation: comet-drift 10s ease-in-out infinite;
  filter: blur(20px);
  z-index: 0;
}

@keyframes comet-drift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-30px, 20px) scale(1.2); }
  66% { transform: translate(20px, -30px) scale(0.8); }
}

.submit-glass {
  background: var(--cyber-glass);
  backdrop-filter: blur(25px);
  border: 1px solid rgba(0, 255, 136, 0.3);
  border-radius: 25px;
  padding: 3rem 2rem;
  text-align: center;
  position: relative;
  z-index: 1;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.submit-title {
  font-family: var(--font-primary);
  font-size: 2.5rem;
  color: var(--cyber-success);
  margin-bottom: 1rem;
}

.submit-subtitle {
  color: var(--text-secondary);
  margin-bottom: 3rem;
  font-size: 1.2rem;
}

.submission-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.deadline-box {
  background: rgba(255, 107, 0, 0.1);
  border: 1px solid var(--cyber-warning);
  border-radius: 15px;
  padding: 1.5rem;
}

.deadline-box h4 {
  color: var(--cyber-warning);
  font-family: var(--font-primary);
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.submission-requirements {
  background: rgba(0, 255, 136, 0.1);
  border: 1px solid var(--cyber-success);
  border-radius: 15px;
  padding: 1.5rem;
  text-align: left;
}

.submission-requirements h4 {
  color: var(--cyber-success);
  font-family: var(--font-primary);
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.submission-requirements ul {
  list-style: none;
  padding: 0;
}

.submission-requirements li {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  position: relative;
  padding-left: 1.5rem;
}

.submission-requirements li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--cyber-success);
  font-weight: bold;
}

.submit-btn {
  position: relative;
  background: var(--gradient-success);
  border: none;
  border-radius: 12px;
  padding: 1.5rem 3rem;
  color: var(--cyber-dark);
  font-family: var(--font-primary);
  font-size: 1.3rem;
  font-weight: 700;
  cursor: pointer;
  overflow: hidden;
  transition: var(--transition-normal);
  margin-bottom: 2rem;
}

.submit-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 10px 30px rgba(0, 255, 136, 0.4);
}

.btn-spark {
  position: absolute;
  top: 50%;
  left: -100%;
  width: 100%;
  height: 2px;
  background: var(--cyber-accent);
  transition: var(--transition-fast);
  filter: blur(1px);
}

.submit-btn:hover .btn-spark {
  left: 100%;
}

.coder-army-credit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  opacity: 0.8;
}

.credit-text {
  color: var(--text-dim);
  font-size: 0.9rem;
}

.coder-army-logo {
  font-family: var(--font-primary);
  color: var(--cyber-primary);
  font-weight: 700;
  font-size: 1.1rem;
  text-shadow: 0 0 5px var(--cyber-primary);
}

/* ============ FOOTER ============ */
.cyber-footer {
  background: var(--cyber-darker);
  border-top: 1px solid rgba(0, 255, 255, 0.2);
  padding: 3rem 2rem 1rem;
  position: relative;
  overflow: hidden;
}

.circuit-pattern {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(90deg, transparent 98%, var(--cyber-primary) 100%),
    linear-gradient(0deg, transparent 98%, var(--cyber-secondary) 100%);
  background-size: 50px 50px, 30px 30px;
  opacity: 0.1;
  animation: circuit-flow 15s linear infinite;
}

@keyframes circuit-flow {
  0% { background-position: 0 0, 0 0; }
  100% { background-position: 50px 50px, 30px 30px; }
}

.footer-content {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
  position: relative;
  z-index: 1;
}

.footer-brand {
  font-family: var(--font-primary);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--cyber-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-tag {
  background: var(--cyber-secondary);
  color: var(--cyber-dark);
  padding: 0.2rem 0.5rem;
  border-radius: 8px;
  font-size: 0.7rem;
  margin-left: 0.5rem;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-link {
  color: var(--text-dim);
  text-decoration: none;
  position: relative;
  transition: var(--transition-fast);
}

.footer-link:hover {
  color: var(--cyber-primary);
}

.footer-link::after {
  content: '⚡';
  position: absolute;
  left: -20px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0;
  transition: var(--transition-fast);
  color: var(--cyber-accent);
}

.footer-link:hover::after {
  opacity: 1;
  left: -15px;
}

.footer-bottom {
  text-align: center;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(0, 255, 255, 0.1);
  color: var(--text-dim);
  font-size: 0.9rem;
}

.hackathon-note {
  color: var(--cyber-accent);
  font-weight: 600;
  margin-top: 0.5rem;
}

/* ============ RESPONSIVE DESIGN ============ */
@media (max-width: 768px) {
  .hackathon-banner {
    padding: 0.3rem 1rem;
  }
  
  .banner-content {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .countdown-timer {
    gap: 0.3rem;
  }
  
  .cybernav {
    top: 2.5rem;
  }
  
  .nav-container {
    flex-direction: column;
    gap: 1rem;
  }
  
  .nav-links {
    gap: 1rem;
  }
  
  .hero-zone {
    margin-top: 5rem;
  }
  
  .hero-content {
    padding: 1rem;
  }
  
  .holo-prism {
    top: 10%;
    right: 5%;
    width: 100px;
    height: 100px;
  }
  
  .mentors-grid,
  .features-diagonal,
  .themes-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .certificate-feature {
    grid-column: span 1;
  }
  
  .timeline-container {
    max-width: 100%;
  }
  
  .timeline-node {
    width: 100%;
    margin-bottom: 2rem;
    float: none;
  }
  
  .timeline-node .node-label {
    margin: 1rem 0;
    order: 0;
  }
  
  .timeline-rail {
    display: none;
  }
  
  .submission-info {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
  }
  .themes-zone {
    padding: 3rem 1.2rem;
  }

  .themes-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .section-title {
    font-size: 2rem;
    letter-spacing: 1px;
  }

  .theme-card {
    padding: 1.5rem;
  }
}

@media (max-width: 480px) {
  .section-title {
    font-size: 1.6rem;
  }

  .theme-icon {
    font-size: 2.5rem;
  }

  .theme-card h3 {
    font-size: 1.1rem;
  }
}

@media (max-width: 480px) {
  .submit-glass {
    padding: 2rem 1rem;
  }
  
  .submit-btn {
    padding: 1.2rem 2rem;
    font-size: 1.1rem;
  }
  .section-title {
    font-size: 1.6rem;
  }

  .theme-icon {
    font-size: 2.5rem;
  }

  .theme-card h3 {
    font-size: 1.1rem;
  }
}

@media (max-width: 900px) {
  .cyber-title {
    font-size: clamp(2.5rem, 10vw, 6rem);
  }
  .section-title {
    font-size: clamp(2rem, 8vw, 2.5rem);
  }
}

/* ============ FOCUS STYLES FOR ACCESSIBILITY ============ */
button:focus,
input:focus,
a:focus {
  outline: 2px solid var(--cyber-primary);
  outline-offset: 2px;
}

/* ============ PRINT STYLES ============ */
@media print {
  .matrix-canvas,
  .energy-flow,
  .holo-prism,
  .comet-trail,
  .hackathon-banner {
    display: none;
  }
  
  body {
    background: white;
    color: black;
  }
}

/* ---------- STRIKE CHATBOT BUTTON ---------- */
.strike-bot-button {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  cursor: pointer;
  z-index: 9999;
  transition: transform 0.3s ease;
}

.strike-bot-button:hover {
  transform: scale(1.1);
}

/* Glowing rotating border */
.strike-border {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    #00ffff,
    #ff00ff,
    #00ffff,
    #ff00ff,
    #00ffff
  );
  animation: spin-border 3s linear infinite;
  filter: blur(2px);
  opacity: 0.9;
}

@keyframes spin-border {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Inner transparent circle */
.strike-bot-button::before {
  content: "";
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(3px);
}

/* ⚡ icon styling */
.strike-icon {
  position: relative;
  font-size: 28px;
  color: #00ffff;
  text-shadow: 0 0 8px #00ffff, 0 0 16px #00ffff;
  animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% {
    text-shadow: 0 0 6px #00ffff, 0 0 12px #00ffff, 0 0 24px #00ffff;
  }
  50% {
    text-shadow: 0 0 12px #ff00ff, 0 0 24px #ff00ff, 0 0 48px #ff00ff;
    color: #ff00ff;
  }
}