/* ==========================================================================
   NASA Space Apps Challenge Valencia - Space & Aerospace Theme
   Design System & Custom Styles
   ========================================================================== */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Orbitron:wght@500;700;800;900&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  /* Color Palette */
  --bg-dark: #040714;
  --bg-card: rgba(13, 22, 45, 0.65);
  --bg-card-hover: rgba(20, 34, 66, 0.85);
  --bg-glass: rgba(15, 23, 42, 0.7);
  
  --primary-cyan: #00f0ff;
  --primary-cyan-glow: rgba(0, 240, 255, 0.4);
  --secondary-purple: #9d4edd;
  --secondary-purple-glow: rgba(157, 78, 221, 0.4);
  --accent-orange: #ff6b00;
  --accent-orange-glow: rgba(255, 107, 0, 0.4);
  --nasa-red: #e11d48;
  --success-green: #10b981;
  
  --text-main: #f8fafc;
  --text-muted: #ffffff;
  --text-dim: #94a3b8;
  
  --border-color: rgba(255, 255, 255, 0.1);
  --border-glow: rgba(0, 240, 255, 0.3);
  
  /* Fonts */
  --font-heading: 'Orbitron', sans-serif;
  --font-subheading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Shadows & Glows */
  --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.35);
  --glow-purple: 0 0 20px rgba(157, 78, 221, 0.35);
  --glow-orange: 0 0 20px rgba(255, 107, 0, 0.35);
  --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  
  --transition-fast: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base resets & Canvas background */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-body);
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

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

.text-muted {
  color: #ffffff !important;
}

/* Typography Utility */
.font-orbitron {
  font-family: var(--font-heading);
}

.font-outfit {
  font-family: var(--font-subheading);
}

.text-cyan {
  color: var(--primary-cyan) !important;
}

.text-purple {
  color: var(--secondary-purple) !important;
}

.text-orange {
  color: var(--accent-orange) !important;
}

.text-glow-cyan {
  text-shadow: 0 0 12px var(--primary-cyan-glow);
}

.text-glow-orange {
  text-shadow: 0 0 12px var(--accent-orange-glow);
}

/* Section Styling */
section {
  position: relative;
  padding: 100px 0;
}

@media (max-width: 768px) {
  section {
    padding: 60px 0;
  }
}

.section-title-wrap {
  margin-bottom: 3.5rem;
  text-align: center;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 50px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid var(--border-glow);
  color: var(--primary-cyan);
  font-family: var(--font-heading);
  font-size: 0.82rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 2.6rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  background: linear-gradient(135deg, #ffffff 30%, var(--primary-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 720px;
  margin: 1rem auto 0 auto;
}

/* Glassmorphism Cards */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: var(--card-shadow);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
}

.glass-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  transform: translateY(-5px);
  box-shadow: var(--glow-cyan), var(--card-shadow);
}

/* Navbar */
.navbar-space {
  background: rgba(4, 7, 20, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: var(--transition-fast);
  padding: 1rem 0;
}

.navbar-space.scrolled {
  padding: 0.6rem 0;
  background: rgba(4, 7, 20, 0.95);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

.navbar-brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-badge {
  background: linear-gradient(135deg, var(--nasa-red), var(--accent-orange));
  color: #fff;
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  letter-spacing: 1px;
}

.brand-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.15rem;
  color: #fff;
  letter-spacing: 1px;
}

.nav-link-space {
  color: var(--text-muted) !important;
  font-family: var(--font-subheading);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.5rem 1rem !important;
  transition: var(--transition-fast);
  position: relative;
}

.nav-link-space:hover,
.nav-link-space.active {
  color: var(--primary-cyan) !important;
}

.nav-link-space::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary-cyan);
  transition: var(--transition-fast);
  transform: translateX(-50%);
  box-shadow: 0 0 8px var(--primary-cyan);
}

.nav-link-space:hover::after,
.nav-link-space.active::after {
  width: 70%;
}

/* Custom Buttons */
.btn-space-primary {
  background: linear-gradient(135deg, #00c6ff, #0072ff);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  padding: 12px 28px;
  border-radius: 50px;
  border: none;
  box-shadow: 0 0 20px rgba(0, 198, 255, 0.4);
  transition: var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 1px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.btn-space-primary:hover {
  background: linear-gradient(135deg, #0072ff, #00c6ff);
  color: #fff;
  box-shadow: 0 0 30px rgba(0, 240, 255, 0.8);
  transform: translateY(-2px);
}

.btn-space-outline {
  background: transparent;
  color: #fff;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  padding: 11px 26px;
  border-radius: 50px;
  border: 1px solid var(--primary-cyan);
  transition: var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 1px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.btn-space-outline:hover {
  background: rgba(0, 240, 255, 0.15);
  color: var(--primary-cyan);
  box-shadow: 0 0 20px var(--primary-cyan-glow);
  transform: translateY(-2px);
}

.btn-space-accent {
  background: linear-gradient(135deg, var(--accent-orange), #ff0055);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  padding: 12px 28px;
  border-radius: 50px;
  border: none;
  box-shadow: 0 0 20px var(--accent-orange-glow);
  transition: var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 1px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.btn-space-accent:hover {
  color: #fff;
  box-shadow: 0 0 30px rgba(255, 107, 0, 0.8);
  transform: translateY(-2px);
}

/* HERO SECTION */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 120px;
  padding-bottom: 80px;
  position: relative;
}

.hero-telemetry-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid var(--border-glow);
  border-radius: 30px;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  color: var(--primary-cyan);
  margin-bottom: 1.5rem;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--primary-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--primary-cyan);
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 240, 255, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(0, 240, 255, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 240, 255, 0); }
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

@media (max-width: 992px) {
  .hero-title {
    font-size: 2.5rem;
  }
}

@media (max-width: 576px) {
  .hero-title {
    font-size: 2rem;
  }
}

.hero-dates-highlight {
  background: linear-gradient(90deg, #ffffff, var(--primary-cyan), var(--secondary-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 2.5rem auto;
  line-height: 1.6;
}

/* COUNTDOWN TIMER HUD */
.countdown-container {
  background: rgba(10, 18, 40, 0.75);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(0, 240, 255, 0.25);
  border-radius: 20px;
  padding: 2rem;
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.5), inset 0 0 20px rgba(0, 240, 255, 0.05);
  max-width: 780px;
  margin: 0 auto 3rem auto;
}

.countdown-label {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  letter-spacing: 2px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 1.2rem;
}

.countdown-boxes {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.countdown-box {
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  min-width: 100px;
  padding: 1rem 0.5rem;
  box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.6);
  position: relative;
  overflow: hidden;
}

.countdown-box::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-cyan), var(--secondary-purple));
}

.countdown-num {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
  text-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
}

.countdown-unit {
  font-size: 0.75rem;
  font-family: var(--font-subheading);
  color: var(--primary-cyan);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 6px;
}

/* HACKATHON / ABOUT SECTION */
.anniversary-badge {
  background: linear-gradient(135deg, rgba(255, 107, 0, 0.2), rgba(157, 78, 221, 0.2));
  border: 1px solid var(--accent-orange);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.2rem;
  margin-bottom: 2rem;
}

.anniversary-icon {
  font-size: 2.5rem;
  color: var(--accent-orange);
}

.timeline-years-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.year-chip {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 0.8rem;
  text-align: center;
  transition: var(--transition-fast);
  cursor: pointer;
}

.year-chip:hover {
  border-color: var(--primary-cyan);
  background: rgba(0, 240, 255, 0.1);
  transform: scale(1.05);
}

.year-chip .year-num {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--primary-cyan);
}

/* AGENDA SECTION */
.agenda-tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.agenda-tab-btn {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  padding: 12px 28px;
  border-radius: 50px;
  transition: var(--transition-fast);
  cursor: pointer;
}

.agenda-tab-btn:hover,
.agenda-tab-btn.active {
  background: linear-gradient(135deg, var(--primary-cyan), #0072ff);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 0 20px var(--primary-cyan-glow);
}

.timeline-wrapper {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.timeline-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 24px;
  width: 2px;
  background: linear-gradient(180deg, var(--primary-cyan), var(--secondary-purple), transparent);
}

@media (min-width: 768px) {
  .timeline-wrapper::before {
    left: 50%;
    transform: translateX(-50%);
  }
}

.timeline-item {
  position: relative;
  margin-bottom: 2.5rem;
}

.timeline-node {
  position: absolute;
  top: 20px;
  left: 15px;
  width: 20px;
  height: 20px;
  background: var(--bg-dark);
  border: 3px solid var(--primary-cyan);
  border-radius: 50%;
  z-index: 2;
  box-shadow: 0 0 10px var(--primary-cyan);
}

@media (min-width: 768px) {
  .timeline-node {
    left: 50%;
    transform: translateX(-50%);
  }
}

.timeline-content {
  margin-left: 60px;
}

@media (min-width: 768px) {
  .timeline-item:nth-child(odd) .timeline-content {
    margin-left: 0;
    margin-right: 50%;
    padding-right: 40px;
    text-align: right;
  }
  
  .timeline-item:nth-child(even) .timeline-content {
    margin-left: 50%;
    padding-left: 40px;
    text-align: left;
  }
}

.time-tag {
  display: inline-block;
  background: rgba(0, 240, 255, 0.15);
  color: var(--primary-cyan);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 0.6rem;
}

.paella-highlight {
  background: linear-gradient(135deg, rgba(255, 107, 0, 0.2), rgba(255, 0, 85, 0.15));
  border: 1px solid var(--accent-orange);
}

/* SPONSORS & PARTNERS */
.sponsor-tier-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--primary-cyan);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 2rem;
  text-align: center;
  position: relative;
}

.sponsor-logo-card {
  background: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 16px;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 120px;
  transition: var(--transition-normal);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.sponsor-logo-card:hover {
  background: #ffffff;
  border-color: var(--primary-cyan);
  transform: translateY(-5px);
  box-shadow: 0 0 25px var(--primary-cyan-glow), 0 10px 25px rgba(0, 0, 0, 0.4);
}

.sponsor-logo-card img {
  max-height: 75px;
  max-width: 85%;
  object-fit: contain;
  filter: none;
  transition: var(--transition-fast);
}

.sponsor-logo-card:hover img {
  transform: scale(1.05);
}

/* MENTORS & STAFF CARDS */
.mentor-card {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.mentor-avatar-wrap {
  position: relative;
  width: 110px;
  height: 110px;
  margin: 0 auto 1.2rem auto;
  border-radius: 50%;
  padding: 4px;
  background: linear-gradient(135deg, var(--primary-cyan), var(--secondary-purple));
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
}

.mentor-avatar {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  background-color: #0b132b;
}

.mentor-name {
  font-family: var(--font-subheading);
  font-weight: 700;
  font-size: 1.2rem;
  margin-bottom: 0.3rem;
  color: #fff;
}

.mentor-role {
  font-size: 0.88rem;
  color: var(--primary-cyan);
  margin-bottom: 0.8rem;
}

.mentor-company {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.social-icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: var(--transition-fast);
  margin: 0 4px;
}

.social-icon-btn:hover {
  background: var(--primary-cyan);
  color: var(--bg-dark);
  box-shadow: 0 0 12px var(--primary-cyan);
}

/* FAQ ACCORDION */
.accordion-space .accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px !important;
  margin-bottom: 1rem;
  overflow: hidden;
}

.accordion-space .accordion-button {
  background: transparent;
  color: #fff;
  font-family: var(--font-subheading);
  font-weight: 600;
  font-size: 1.05rem;
  padding: 1.2rem 1.5rem;
  box-shadow: none !important;
}

.accordion-space .accordion-button:not(.collapsed) {
  background: rgba(0, 240, 255, 0.08);
  color: var(--primary-cyan);
  border-bottom: 1px solid rgba(0, 240, 255, 0.15);
}

.accordion-space .accordion-button::after {
  filter: invert(1) sepia(1) saturate(5) hue-rotate(160deg);
}

.accordion-space .accordion-body {
  color: var(--text-muted);
  line-height: 1.7;
  padding: 1.5rem;
}

/* MODALS */
.modal-space .modal-content {
  background: rgba(10, 18, 40, 0.95);
  backdrop-filter: blur(25px);
  border: 1px solid var(--border-glow);
  border-radius: 20px;
  color: var(--text-main);
  box-shadow: 0 0 50px rgba(0, 0, 0, 0.8);
}

.modal-space .modal-header {
  border-bottom: 1px solid var(--border-color);
}

.modal-space .modal-footer {
  border-top: 1px solid var(--border-color);
}

.form-control-space {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-color);
  color: #fff;
  border-radius: 10px;
  padding: 0.8rem 1rem;
}

.form-control-space:focus {
  background: rgba(15, 23, 42, 0.95);
  border-color: var(--primary-cyan);
  color: #fff;
  box-shadow: 0 0 15px var(--primary-cyan-glow);
}

/* FOOTER */
.footer-space {
  background: #02040b;
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px 0;
  position: relative;
}

/* Back to Top Rocket Button */
.back-to-top-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-cyan), #0072ff);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: 0 0 20px var(--primary-cyan-glow);
  border: none;
  cursor: pointer;
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-fast);
}

.back-to-top-btn.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top-btn:hover {
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 0 30px var(--primary-cyan);
}