:root {
  --navy:    #0a0f1e;
  --navy2:   #111827;
  --violet:  #7c3aed;
  --violet2: #6d28d9;
  --cyan:    #06b6d4;
  --cyan2:   #0891b2;
  --white:   #f8fafc;
  --muted:   #94a3b8;
  --card-bg: #161d30;
  --border:  rgba(124,58,237,0.25);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--navy);
  color: var(--white);
  line-height: 1.7;
}

h1, h2, h3, h4, h5 {
  font-family: 'Space Grotesk', sans-serif;
  line-height: 1.2;
}

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

/* ── NAVBAR ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(10,15,30,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  height: 64px;
  display: flex; align-items: center; justify-content: space-between;
}

.nav-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  display: flex; align-items: center; gap: 0.25rem;
}

.nav-brand .x { color: var(--cyan); }
.nav-brand .tech { color: var(--violet); }

.nav-links {
  display: flex; align-items: center; gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.9rem;
  color: var(--muted);
  transition: color 0.2s;
}

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

.nav-links .btn-register {
  background: var(--violet);
  color: var(--white);
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: background 0.2s, transform 0.2s;
}

.nav-links .btn-register:hover {
  background: var(--violet2);
  transform: translateY(-1px);
}

/* hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--white); border-radius: 2px;
  transition: all 0.3s;
}

/* ── HERO ── */
.hero {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding: 120px 1.5rem 80px;
}

.hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(124,58,237,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124,58,237,0.07) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0%   { background-position: 0 0; }
  100% { background-position: 60px 60px; }
}

.hero::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 60% at 50% 40%, rgba(124,58,237,0.18) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content { position: relative; z-index: 1; max-width: 820px; }

.hero-badge {
  display: inline-block;
  background: rgba(124,58,237,0.15);
  border: 1px solid rgba(124,58,237,0.4);
  color: var(--cyan);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.4rem 1.1rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.hero h1 .x  { color: var(--cyan); }
.hero h1 .tech { color: var(--violet); }

.hero-sub {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--muted);
  margin-bottom: 1.5rem;
  font-weight: 300;
}

.hero-tagline {
  font-size: clamp(0.95rem, 1.8vw, 1.1rem);
  color: #cbd5e1;
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto; margin-right: auto;
}

.hero-meta {
  display: flex; justify-content: center; gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-meta-item {
  display: flex; align-items: center; gap: 0.5rem;
  color: var(--muted); font-size: 0.95rem;
}

.hero-meta-item i { color: var(--cyan); }

.hero-ctas {
  display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;
}


.hero-reg {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}


@keyframes pulse {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(138, 43, 226, 0.7);
  }
  70% {
    transform: scale(1.08);
    box-shadow: 0 0 0 15px rgba(138, 43, 226, 0);
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(138, 43, 226, 0);
  }
}

.hero-reg .btn {
  animation: pulse 1.5s infinite;
}




.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.8rem 2rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-violet {
  background: var(--violet);
  color: var(--white);
}
.btn-violet:hover { background: var(--violet2); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(124,58,237,0.35); }

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.25);
}
.btn-outline:hover { border-color: var(--cyan); color: var(--cyan); transform: translateY(-2px); }

/* ── COUNTDOWN ── */
.countdown-section {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 3rem 1.5rem;
  text-align: center;
}

.countdown-section p {
  color: var(--muted);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

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

.countdown-unit {
  display: flex; flex-direction: column; align-items: center;
  min-width: 70px;
}

.countdown-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 3rem; font-weight: 700;
  background: linear-gradient(135deg, var(--violet), var(--cyan));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.countdown-label {
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 0.4rem;
}

/* ── SECTIONS ── */
section { padding: 5rem 1.5rem; }

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

.section-tag {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-lead {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 600px;
}

.section-header { margin-bottom: 3.5rem; }

/* ── ABOUT ── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-text p { color: #cbd5e1; margin-bottom: 1rem; }

.check-list { list-style: none; margin-top: 1.5rem; }
.check-list li {
  display: flex; align-items: flex-start; gap: 0.75rem;
  color: #cbd5e1;
  margin-bottom: 0.75rem;
}
.check-list i { color: var(--cyan); margin-top: 4px; flex-shrink: 0; }

.event-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
}

.event-card h4 {
  margin-bottom: 1.5rem;
  font-size: 1.15rem;
  color: var(--white);
}

.event-detail {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.85rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  font-size: 0.9rem;
}

.event-detail:last-child { border-bottom: none; }

.event-detail-label { display: flex; align-items: center; gap: 0.6rem; color: var(--muted); }
.event-detail-label i { color: var(--violet); width: 16px; }

.event-detail-value {
  background: rgba(124,58,237,0.15);
  color: var(--cyan);
  padding: 0.3rem 0.85rem;
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 600;
  text-align: right;
}

.event-detail-value.green {
  background: rgba(16,185,129,0.15);
  color: #10b981;
}

/* Topics */
.topics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 3rem;
}

.topic-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.75rem 1.5rem;
  text-align: center;
  transition: border-color 0.2s, transform 0.2s;
}

.topic-card:hover {
  border-color: var(--violet);
  transform: translateY(-4px);
}

.topic-icon {
  width: 52px; height: 52px;
  border-radius: 12px;
  background: rgba(124,58,237,0.15);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1rem;
  font-size: 1.4rem;
  color: var(--violet);
}

.topic-card h5 { font-size: 1rem; margin-bottom: 0.5rem; }
.topic-card p { color: var(--muted); font-size: 0.88rem; }

/* ── SPEAKERS ── */
#speakers { background: var(--card-bg); }

.featured-speaker {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2.5rem;
  align-items: center;
  background: var(--navy2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2.5rem;
  margin-bottom: 2rem;
}

.featured-speaker.reverse { direction: rtl; }
.featured-speaker.reverse > * { direction: ltr; }

.featured-photo {
  width: 160px; height: 160px;
  border-radius: 16px;
  object-fit: cover;
  border: 2px solid var(--border);
  background: rgba(124,58,237,0.1);
  display: flex; align-items: center; justify-content: center;
  font-size: 3rem;
  color: var(--violet);
  flex-shrink: 0;
}

.featured-photo img { width: 100%; height: 100%; object-fit: cover; border-radius: 14px; }

.speaker-role-badge {
  display: inline-block;
  font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--cyan);
  background: rgba(6,182,212,0.12);
  border: 1px solid rgba(6,182,212,0.3);
  padding: 0.3rem 0.9rem;
  border-radius: 100px;
  margin-bottom: 0.75rem;
}

.featured-info h3 { font-size: 1.6rem; margin-bottom: 0.25rem; }
.featured-info .role { color: var(--muted); font-size: 0.95rem; margin-bottom: 1rem; }

.speaker-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 1rem;
}

.speaker-card {
  background: var(--navy);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color 0.2s, transform 0.25s;
}

.speaker-card:hover { border-color: var(--violet); transform: translateY(-6px); }

.speaker-img {
  width: 100%; aspect-ratio: 1;
  background: rgba(124,58,237,0.1);
  display: flex; align-items: center; justify-content: center;
  font-size: 3.5rem; color: var(--violet);
  overflow: hidden;
}

.speaker-img img { width: 100%; height: 100%; object-fit: cover; }

.speaker-body { padding: 1.25rem; text-align: center; }
.speaker-body h5 { font-size: 1rem; margin-bottom: 0.25rem; }
.speaker-body .s-role { color: var(--muted); font-size: 0.8rem; margin-bottom: 0.6rem; }
.speaker-body .s-topic { color: #94a3b8; font-size: 0.82rem; font-style: italic; margin-bottom: 1rem; }

.btn-linkedin {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-size: 0.8rem; font-weight: 600;
  color: var(--cyan);
  border: 1px solid rgba(6,182,212,0.3);
  padding: 0.3rem 0.8rem;
  border-radius: 6px;
  transition: background 0.2s;
}

.Invitation-img {
    width: 100%;
	
    
}

.Invitation-img img {
    width: 60%;
    height: auto;
    display: block;
	margin: 0 auto;
	border-radius: 12px;
     box-shadow: 0 6px 6px rgba(128, 0, 255, 0.4);
}

.btn-linkedin:hover { background: rgba(6,182,212,0.1); }

/* ── SCHEDULE ── */
.schedule-timeline { max-width: 720px; margin: 0 auto; }

.schedule-row {
  display: grid;
  grid-template-columns: 90px 32px 1fr;
  gap: 0 1rem;
  align-items: start;
  position: relative;
}

.s-time {
  text-align: right;
  padding-top: 0.5rem;
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 500;
  line-height: 1.3;
  flex-shrink: 0;
}

.s-line {
  display: flex; flex-direction: column; align-items: center;
  padding: 0 1rem;
  position: relative;
}

.schedule-row:not(:last-child) .s-line::after {
  content: '';
  position: absolute;
  top: 20px; bottom: -24px;
  left: 50%; transform: translateX(-50%);
  width: 1px;
  background: linear-gradient(to bottom, var(--violet), rgba(124,58,237,0.1));
}

.s-dot {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--violet);
  flex-shrink: 0;
  position: relative; z-index: 1;
  box-shadow: 0 0 0 3px rgba(124,58,237,0.2);
  margin-top: 0.5rem;
}

.s-dot.cyan { background: var(--cyan); box-shadow: 0 0 0 3px rgba(6,182,212,0.2); }

.s-content {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
}

.s-content h4 { font-size: 0.97rem; margin-bottom: 0.25rem; }
.s-content p { color: var(--muted); font-size: 0.84rem; margin: 0; }
.s-content.break-item { opacity: 0.6; }

/* ── REGISTRATION ── */
#registration { background: var(--card-bg); }

.reg-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.reg-text h2 { margin-bottom: 1rem; }
.reg-text p { color: #cbd5e1; margin-bottom: 1.5rem; }

.reg-features { list-style: none; margin-bottom: 2rem; }
.reg-features li {
  display: flex; align-items: center; gap: 0.75rem;
  color: #cbd5e1; font-size: 0.95rem;
  margin-bottom: 0.6rem;
}
.reg-features i { color: var(--cyan); }

.reg-form-card {
  background: var(--navy);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2rem;
}

.reg-form-card h4 { margin-bottom: 1.5rem; font-size: 1.1rem; }

.form-group { margin-bottom: 1rem; }

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 0.4rem;
}

.form-group input,
.form-group select {
  width: 100%;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.7rem 1rem;
  color: var(--white);
  font-size: 0.9rem;
  font-family: 'Inter', sans-serif;
  transition: border-color 0.2s;
  outline: none;
}

.form-group input:focus,
.form-group select:focus { border-color: var(--violet); }

.form-group input::placeholder { color: #475569; }
.form-group select option { background: var(--navy2); }

.btn-full { width: 100%; justify-content: center; margin-top: 0.5rem; }

/* ── SPONSORS ── */
.sponsors-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: rem;
}


.sponsors-grid3 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-top: rem;
}



.sponsors-grid2 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: rem;
}

.sponsors-grid1 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  justify-items: center;
}

.sponsor-slot {
  background: var(--card-bg);
  border: 1px dashed rgba(124,58,237,0.3);
  border-radius: 14px;
  height: 100px;
  display: flex; align-items: center; justify-content: center;
  color: var(--muted);
  font-size: 0.8rem;
  transition: border-color 0.2s;
}

.sponsor-slot:hover { border-color: var(--violet); color: var(--violet); }

.sponsor-logo-p {
  max-width: 600px;
  max-height: 130px;
  width: 350px;
  height: auto;
  object-fit: contain;
}

.sponsor-logo-s {
  max-width: 600px;
  max-height: 220px;
  width: 350px;
  height: auto;
  object-fit: contain;
}

.sponsor-logo-s2 {
  max-width: 600px;
  max-height: 85px;
  width: 350px;
  height: auto;
  object-fit: contain;
}

.sponsor-logo-s1 {
  max-width: 600px;
  max-height: 95px;
  width: 350px;
  height: auto;
  object-fit: contain;
}

/* ── CONTACT ── */
#contact { background: var(--card-bg); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-item {
  display: flex; align-items: flex-start; gap: 1rem;
  margin-bottom: 1.75rem;
}

.contact-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: rgba(124,58,237,0.15);
  display: flex; align-items: center; justify-content: center;
  color: var(--violet);
  flex-shrink: 0;
}

.contact-item h5 { font-size: 0.9rem; color: var(--muted); font-weight: 500; margin-bottom: 0.2rem; }
.contact-item p { color: var(--white); font-size: 0.95rem; }

.map-placeholder {
  background: var(--navy);
  border: 1px solid var(--border);
  border-radius: 16px;
  height: 260px;
  display: flex; align-items: center; justify-content: center;
  flex-direction: column;
  gap: 0.75rem;
  color: var(--muted);
}

.map-placeholder i { font-size: 2rem; color: var(--violet); }

/* ── FOOTER ── */
footer {
  background: var(--navy2);
  border-top: 1px solid var(--border);
  padding: 3rem 1.5rem 1.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  max-width: 1100px; margin: 0 auto;
  margin-bottom: 2.5rem;
}

.footer-brand .nav-brand { font-size: 1.3rem; margin-bottom: 0.75rem; }
.footer-brand p { color: var(--muted); font-size: 0.88rem; margin-bottom: 1rem; }

.social-links { display: flex; gap: 0.75rem; }
.social-link {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.06);
  display: flex; align-items: center; justify-content: center;
  color: var(--muted);
  font-size: 0.9rem;
  transition: background 0.2s, color 0.2s;
}
.social-link:hover { background: var(--violet); color: var(--white); }

.footer-col h6 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.9rem;
  margin-bottom: 1rem;
  color: var(--white);
}

.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 0.5rem; }
.footer-col ul li a { color: var(--muted); font-size: 0.88rem; transition: color 0.2s; }
.footer-col ul li a:hover { color: var(--cyan); }

.footer-col .contact-line {
  display: flex; align-items: flex-start; gap: 0.5rem;
  color: var(--muted); font-size: 0.85rem;
  margin-bottom: 0.6rem;
}
.footer-col .contact-line i { color: var(--violet); margin-top: 3px; flex-shrink: 0; }

.footer-bottom {
  max-width: 1100px; margin: 0 auto;
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 1.5rem;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 0.5rem;
}

.footer-bottom p { color: var(--muted); font-size: 0.82rem; }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .about-grid, .reg-grid, .contact-grid { grid-template-columns: 1fr; }
  .topics-grid, .speaker-cards { grid-template-columns: repeat(2, 1fr); }
  .sponsors-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .featured-speaker { grid-template-columns: 1fr; text-align: center; }
  .featured-speaker.reverse { direction: ltr; }
  .featured-photo { margin: 0 auto; }
  .sponsors-grid3 { grid-template-columns: repeat(2, 1fr); }
  .sponsors-grid2 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: rgba(10,15,30,0.98); padding: 1.5rem; gap: 1.25rem; border-bottom: 1px solid var(--border); }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .topics-grid, .speaker-cards, .sponsors-grid { grid-template-columns: 1fr; }
  .topics-grid, .speaker-cards, .sponsors-grid3 { grid-template-columns: 1fr; }
  .topics-grid, .speaker-cards, .sponsors-grid2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-meta { flex-direction: column; gap: 0.75rem; }
}

@media (prefers-reduced-motion: reduce) {
  .hero::before { animation: none; }
  * { transition: none !important; }
}