/* ===================================
   ALX37 - Minimal Academic Excellence
   =================================== */

:root {
  /* Minimal Color Palette */
  --color-black: #000000;
  --color-white: #FFFFFF;
  --color-gray-900: #111111;
  --color-gray-800: #1a1a1a;
  --color-gray-700: #2a2a2a;
  --color-gray-600: #666666;
  --color-gray-500: #888888;
  --color-gray-400: #aaaaaa;
  --color-gray-300: #cccccc;
  --color-gray-200: #e5e5e5;
  --color-gray-100: #f5f5f5;
  
  /* Accent Colors */
  --color-accent: #4169E1;  /* Royal Blue */
  --color-accent-light: #6495ED;
  --color-accent-dark: #1E3A8A;
  
  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', sans-serif;
  --font-display: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', sans-serif;
  
  /* Spacing Scale */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 3rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 8rem;
  
  /* Transitions */
  --transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 600ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===================================
   Reset
   =================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-white);
  background: var(--color-black);
  overflow-x: hidden;
}

/* ===================================
   Canvas Background
   =================================== */

#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.3;
  z-index: 1;
}

/* ===================================
   Navigation
   =================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-md) 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all var(--transition);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-white);
  text-decoration: none;
  transition: opacity var(--transition);
}

.nav-logo:hover {
  opacity: 0.8;
}

.nav-menu {
  display: flex;
  gap: var(--space-lg);
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-400);
  text-decoration: none;
  transition: color var(--transition);
  position: relative;
}

.nav-link:hover {
  color: var(--color-white);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-white);
  transition: width var(--transition);
}

.nav-link:hover::after {
  width: 100%;
}

/* ===================================
   Container
   =================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ===================================
   Hero / Mission Section
   =================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
  background: radial-gradient(
    ellipse at top center,
    rgba(65, 105, 225, 0.05) 0%,
    transparent 50%
  );
}

.hero-background {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}

/* Cosmic light beam - a divine ray piercing the universal darkness */
.light-beam {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    115deg,
    transparent 0%,
    transparent 46%,
    rgba(255, 255, 255, 0.01) 48%,
    rgba(255, 255, 255, 0.02) 49%,
    rgba(255, 255, 255, 0.05) 49.5%,
    rgba(255, 255, 255, 0.08) 50%,
    rgba(255, 255, 255, 0.05) 50.5%,
    rgba(255, 255, 255, 0.02) 51%,
    rgba(255, 255, 255, 0.01) 52%,
    transparent 54%,
    transparent 100%
  );
  transform-origin: center;
  animation: cosmicBeam 12s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.light-beam::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    115deg,
    transparent 0%,
    transparent 45%,
    rgba(255, 255, 255, 0.02) 48%,
    rgba(255, 255, 255, 0.06) 50%,
    rgba(255, 255, 255, 0.02) 52%,
    transparent 55%,
    transparent 100%
  );
  filter: blur(8px);
  opacity: 0.8;
  animation: glowPulse 6s ease-in-out infinite;
}

.light-beam::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    115deg,
    transparent 0%,
    transparent 45%,
    rgba(147, 197, 253, 0.02) 48%,
    rgba(147, 197, 253, 0.06) 50%,
    rgba(147, 197, 253, 0.02) 52%,
    transparent 55%,
    transparent 100%
  );
  filter: blur(15px);
  mix-blend-mode: screen;
  animation: lightBreath 8s ease-in-out infinite;
}

/* Cosmic dust and glow */
.light-glow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(
      ellipse at 70% 40%,
      rgba(255, 255, 255, 0.02) 0%,
      transparent 40%
    ),
    radial-gradient(
      ellipse at 30% 60%,
      rgba(100, 149, 237, 0.01) 0%,
      transparent 40%
    );
  animation: cosmicDust 20s ease-in-out infinite;
}

/* Subtle star field */
.stars {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(1px 1px at 20% 30%, rgba(255, 255, 255, 0.3), transparent),
    radial-gradient(1px 1px at 40% 60%, rgba(255, 255, 255, 0.2), transparent),
    radial-gradient(1px 1px at 60% 10%, rgba(255, 255, 255, 0.3), transparent),
    radial-gradient(1px 1px at 80% 80%, rgba(255, 255, 255, 0.2), transparent),
    radial-gradient(1px 1px at 10% 90%, rgba(255, 255, 255, 0.2), transparent),
    radial-gradient(1px 1px at 90% 20%, rgba(255, 255, 255, 0.3), transparent);
  background-size: 200% 200%;
  animation: starsFloat 60s linear infinite;
  opacity: 0.4;
}

@keyframes starsFloat {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(-50px, -50px);
  }
}

@keyframes cosmicBeam {
  0%, 100% {
    opacity: 0.6;
    transform: rotate(25deg) scale(1);
  }
  25% {
    opacity: 0.8;
    transform: rotate(25deg) scale(1.02);
  }
  50% {
    opacity: 1;
    transform: rotate(25deg) scale(1.05);
  }
  75% {
    opacity: 0.8;
    transform: rotate(25deg) scale(1.02);
  }
}

@keyframes glowPulse {
  0%, 100% {
    opacity: 0.5;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.1);
  }
}

@keyframes lightBreath {
  0%, 100% {
    opacity: 0.6;
    filter: blur(15px);
  }
  50% {
    opacity: 1;
    filter: blur(20px);
  }
}

@keyframes cosmicDust {
  0%, 100% {
    opacity: 0.5;
    transform: scale(1) rotate(0deg);
  }
  50% {
    opacity: 1;
    transform: scale(1.05) rotate(1deg);
  }
}

.hero-content {
  text-align: center;
  max-width: 800px;
  padding: 0 var(--space-md);
}

.hero-title {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', sans-serif;
  font-size: clamp(3rem, 6vw, 4.5rem);
  font-weight: 200;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-xl);
  position: relative;
  display: inline-block;
}

.hero-title .title-line {
  display: block;
  opacity: 0;
  animation: titleReveal 1.5s ease-out forwards;
  position: relative;
  padding: 0.1em 0;
  line-height: 1.1;
}

.hero-title .title-line:first-child {
  margin-bottom: 0.2em;
  animation-delay: 0.5s;
  color: var(--color-white);
}

.hero-title .title-line:last-child {
  animation-delay: 0.8s;
  color: var(--color-white);
}

/* Title reveal animation */
@keyframes titleReveal {
  0% {
    opacity: 0;
    transform: translateY(20px);
    filter: blur(10px);
  }
  50% {
    filter: blur(5px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}


.hero-statement {
  font-size: clamp(1.125rem, 1.75vw, 1.25rem);
  font-weight: 300;
  line-height: 1.6;
  color: var(--color-gray-400);
  opacity: 0;
  animation: fadeInUp 1.2s ease-out 1.2s forwards;
  max-width: 650px;
  margin: 0 auto;
  letter-spacing: 0.01em;
}

.hero-statement .emphasis {
  color: var(--color-white);
  font-weight: 400;
  font-style: italic;
  position: relative;
  padding: 0 0.1em;
  transition: all var(--transition-slow);
}

/* Subtle underline effect */
.hero-statement .emphasis::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--color-white) 20%,
    var(--color-white) 80%,
    transparent 100%
  );
  opacity: 0.3;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-slow);
}

.hero-statement:hover .emphasis::after {
  transform: scaleX(1);
  opacity: 0.5;
}

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

/* ===================================
   Section Styles
   =================================== */

section {
  padding: var(--space-2xl) 0;
  position: relative;
  z-index: 2;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 300;
  text-align: center;
  margin-bottom: var(--space-2xl);
  letter-spacing: -0.02em;
  color: var(--color-white);
}

/* ===================================
   Problem Section - Premium Design
   =================================== */

.problem {
  background: var(--color-black);
  position: relative;
  overflow: hidden;
}

/* Subtle gradient background */
.problem::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle at 20% 50%,
    rgba(65, 105, 225, 0.03) 0%,
    transparent 50%
  );
  animation: drift 20s ease-in-out infinite;
}

@keyframes drift {
  0%, 100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(50px, -50px);
  }
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
  position: relative;
  z-index: 1;
  padding: var(--space-md) 0;
}

.problem-card {
  padding: var(--space-2xl) var(--space-xl);
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.02) 0%,
    rgba(255, 255, 255, 0.01) 100%
  );
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  backdrop-filter: blur(10px) saturate(1.1);
  -webkit-backdrop-filter: blur(10px) saturate(1.1);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px);
  animation: cardFadeIn 0.8s ease-out forwards;
  animation-delay: calc(var(--card-index, 0) * 0.1s);
}

@keyframes cardFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}


/* Card inner glow */
.problem-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.1) 50%,
    transparent 100%
  );
  opacity: 0;
  transition: opacity 0.4s ease;
}

.problem-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 
    0 20px 40px rgba(0, 0, 0, 0.2),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset;
}

.problem-card:hover::before {
  opacity: 1;
}

/* Problem icon - Minimal design */
.problem-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}



.problem-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-gray-400);
  stroke-width: 1.5;
  fill: none;
  transition: stroke var(--transition);
}

.problem-card:hover .problem-icon {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
}

.problem-card:hover .problem-icon svg {
  stroke: var(--color-white);
}

.problem-number {
  position: absolute;
  top: var(--space-lg);
  left: var(--space-xl);
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--color-gray-600);
  letter-spacing: 0.1em;
  font-family: var(--font-display);
}

.problem-card h3 {
  font-size: 1.25rem;
  font-weight: 400;
  margin-bottom: var(--space-md);
  line-height: 1.3;
  color: var(--color-white);
  letter-spacing: -0.02em;
  font-family: var(--font-display);
}

.problem-card p {
  font-size: 0.875rem;
  color: var(--color-gray-400);
  line-height: 1.6;
  margin: 0;
  letter-spacing: 0;
  max-width: 90%;
}

/* Hover state enhancements */
.problem-card:hover h3 {
  color: var(--color-gray-100);
}

.problem-card:hover p {
  color: var(--color-gray-400);
}

/* ===================================
   Workflow Section
   =================================== */

.workflow {
  background: var(--color-black);
}

.workflow-diagram {
  max-width: 500px;
  margin: 0 auto;
  padding: var(--space-lg) 0;
  position: relative;
}

/* Simple elegant timeline */
.workflow-diagram::before {
  content: '';
  position: absolute;
  left: 30px;
  top: 40px;
  bottom: 40px;
  width: 1px;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    var(--color-gray-700) 10%,
    var(--color-gray-700) 90%,
    transparent 100%
  );
}

.workflow-step {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
  opacity: 0;
  animation: fadeIn 0.8s ease-out forwards;
  animation-delay: calc(var(--step) * 0.15s);
  position: relative;
}

.workflow-step:last-child {
  margin-bottom: 0;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Clean icon design */
.step-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: var(--color-black);
  border: 1px solid var(--color-gray-700);
  position: relative;
  z-index: 2;
  transition: all var(--transition);
}

/* Subtle glow effect */
.step-icon::before {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background: radial-gradient(circle at center, rgba(255, 255, 255, 0.02), transparent 50%);
  opacity: 0;
  transition: opacity var(--transition);
}

.step-icon.human {
  border-color: var(--color-accent);
  background: rgba(65, 105, 225, 0.05);
}

.step-icon.ai {
  border-color: var(--color-gray-700);
}

.step-icon.collaborative {
  border-color: var(--color-accent-light);
  background: rgba(100, 149, 237, 0.05);
}

.step-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-gray-400);
  stroke-width: 1.5;
}

.step-icon.human svg,
.step-icon.collaborative svg {
  stroke: var(--color-accent-light);
}

/* Clean content styling */
.step-content {
  flex: 1;
}

.step-label {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-white);
  margin-bottom: var(--space-xs);
  letter-spacing: -0.01em;
}

.step-description {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  line-height: 1.5;
}

/* Simple task tags */
.step-description span {
  display: inline-block;
  margin-right: var(--space-sm);
  margin-bottom: 4px;
  padding: 4px 12px;
  background: var(--color-gray-900);
  border: 1px solid var(--color-gray-800);
  border-radius: 16px;
  font-size: 0.75rem;
  transition: all var(--transition);
}

.step-description span:hover {
  border-color: var(--color-gray-700);
  background: var(--color-gray-800);
  color: var(--color-gray-300);
}

/* Clean hover effects */
.workflow-step:hover .step-icon {
  transform: scale(1.05);
  border-color: var(--color-gray-600);
}

.workflow-step:hover .step-icon::before {
  opacity: 1;
}

.workflow-step:hover .step-icon.human {
  border-color: var(--color-accent-light);
}

.workflow-step:hover .step-icon.collaborative {
  border-color: var(--color-accent-light);
}

/* Timeline connection dots */
.workflow-step::after {
  content: '';
  position: absolute;
  left: 30px;
  top: 30px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-gray-700);
  transform: translateX(-50%);
  transition: all var(--transition);
}

.workflow-step:hover::after {
  width: 6px;
  height: 6px;
  background: var(--color-gray-500);
}

.workflow-step[data-step="1"] { --step: 1; }
.workflow-step[data-step="2"] { --step: 2; }
.workflow-step[data-step="3"] { --step: 3; }
.workflow-step[data-step="4"] { --step: 4; }
.workflow-step[data-step="5"] { --step: 5; }
.workflow-step[data-step="6"] { --step: 6; }
.workflow-step[data-step="7"] { --step: 7; }


@keyframes fadeIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}


/* ===================================
   Progress Section
   =================================== */

.progress {
  background: var(--color-gray-900);
}

.progress-timeline {
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

.progress-timeline::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-gray-700);
}

.timeline-item {
  position: relative;
  padding-left: 60px;
  margin-bottom: var(--space-lg);
}

.timeline-marker {
  position: absolute;
  left: 16px;
  top: 8px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-gray-800);
  border: 2px solid var(--color-gray-700);
}

.timeline-item.completed .timeline-marker {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.timeline-item.active .timeline-marker {
  background: var(--color-gray-800);
  border-color: var(--color-accent-light);
  box-shadow: 0 0 0 4px rgba(100, 149, 237, 0.2);
}

.timeline-content h3 {
  font-size: 1.125rem;
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.timeline-content p {
  font-size: 0.875rem;
  color: var(--color-gray-400);
}

/* ===================================
   Team Section
   =================================== */

.team {
  background: var(--color-black);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  max-width: 900px;
  margin: 0 auto;
}

.team-member {
  text-align: center;
  padding: var(--space-lg);
  transition: transform var(--transition);
}

.team-member:hover {
  transform: translateY(-4px);
}

.member-initial {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-md);
  border-radius: 50%;
  background: var(--color-gray-900);
  border: 2px solid var(--color-gray-700);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-gray-400);
  transition: all var(--transition);
}

.team-member:hover .member-initial {
  border-color: var(--color-accent);
  color: var(--color-accent-light);
}

.team-member h3 {
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.member-role {
  font-size: 0.875rem;
  color: var(--color-accent-light);
  margin-bottom: var(--space-xs);
}

.member-education {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  margin-bottom: var(--space-xs);
}

.member-bio {
  font-size: 0.875rem;
  color: var(--color-gray-400);
  line-height: 1.6;
  margin-top: var(--space-sm);
}

/* ===================================
   Contact Section
   =================================== */

.contact {
  background: var(--color-gray-900);
  padding: var(--space-xl) 0;
}

.contact-content {
  text-align: center;
}

.contact-content h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  margin-bottom: var(--space-sm);
}

.contact-email {
  font-size: 1.125rem;
  color: var(--color-gray-400);
  text-decoration: none;
  transition: color var(--transition);
}

.contact-email:hover {
  color: var(--color-white);
}

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .hero-title {
    font-size: clamp(2.5rem, 10vw, 4rem);
  }
  
  .section-title {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
  }
  
  .problem-grid,
  .team-grid {
    grid-template-columns: 1fr;
  }
  
  .workflow-diagram::before {
    left: 25px;
  }
  
  .workflow-step::after {
    left: 25px;
  }
  
  .step-icon {
    width: 50px;
    height: 50px;
  }
  
  .step-icon svg {
    width: 20px;
    height: 20px;
  }
  
  .step-content {
    padding-left: 0;
  }
  
  .step-description span {
    font-size: 0.7rem;
    padding: 2px 8px;
  }
  
  .step-action span {
    display: block;
    margin-right: 0;
    margin-bottom: var(--space-xs);
  }
}