/* ============================================================
   EURO SUMMIT 2026 — Main Stylesheet
   ============================================================ */

/* ---------- TOKENS ---------- */
:root {
  --ink:     #13122B;                   /* deepest navy bg (Pantone 276 C-ish) */
  --ink-2:   #1B1A3A;                   /* panel navy */
  --ink-3:   #232246;                   /* raised navy */
  --royal:   #0047BB;                   /* Pantone 293 C */
  --royal-2: #0a5be0;
  --cyan:    #00B5E2;                   /* Pantone 306 C */
  --lime:    #C4D600;                   /* Pantone 3570 C */
  --white:   #FFFFFF;
  --mist:    #B9BCD6;                   /* muted text */
  --mist-2:  #7E82A6;
  --line:    rgba(255, 255, 255, .10);
  --line-2:  rgba(255, 255, 255, .06);
  --display: 'Sora', system-ui, sans-serif;
  --body:    'Inter', system-ui, sans-serif;
  --maxw:    1180px;
}


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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--body);
  background: var(--ink);
  color: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a   { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* dotted texture used across dark sections */
.dots {
  background-image: radial-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 18px 18px;
}


/* ---------- NAV ---------- */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background .3s, backdrop-filter .3s, border-color .3s;
}

header.scrolled {
  background: rgba(15, 14, 35, .82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--display);
  font-weight: 800;
  letter-spacing: .02em;
}

.brand .yr {
  display: flex;
  flex-direction: column;
  line-height: .78;
  font-size: 15px;
  color: var(--lime);
}

.brand .nm {
  font-size: 17px;
  line-height: .86;
}

.brand .nm small {
  display: block;
  font-size: 8.5px;
  letter-spacing: .34em;
  color: var(--mist);
  font-weight: 600;
}

.brand svg { width: 30px; height: 30px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-links a {
  font-size: 14px;
  color: var(--mist);
  font-weight: 500;
  transition: color .2s;
}

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

.nav-cta {
  font-family: var(--display);
  font-weight: 600;
  font-size: 13.5px;
  color: var(--ink) !important;
  background: var(--lime);
  padding: 11px 20px;
  border-radius: 100px;
  transition: transform .2s, box-shadow .2s;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px -8px rgba(196, 214, 0, .5);
}

.burger {
  display: none;
  background: none;
  border: 0;
  color: #fff;
  cursor: pointer;
}


/* ---------- HERO ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 70px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 80% at 78% 18%, rgba(0, 71, 187, .55), transparent 60%),
    radial-gradient(90%  70% at 12% 88%, rgba(0, 181, 226, .22), transparent 55%);
}

.hero-bg .dotlayer {
  position: absolute;
  inset: 0;
  opacity: .5;
}

/* the signature "parentheses" arcs from the stage design */
.arc {
  position: absolute;
  border: 2.5px solid;
  border-color: transparent;
  border-radius: 50%;
  z-index: 1;
  pointer-events: none;
}

.arc.c1 {
  width: 560px;
  height: 560px;
  border-left-color: var(--cyan);
  border-right-color: transparent;
  top: 50%;
  right: -180px;
  transform: translateY(-50%) rotate(-18deg);
  opacity: .55;
}

.arc.c2 {
  width: 760px;
  height: 760px;
  border-left-color: rgba(196, 214, 0, .45);
  top: 50%;
  right: -320px;
  transform: translateY(-50%) rotate(8deg);
}

.arc.dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--lime);
  border: 0;
  top: 32%;
  right: 60px;
  box-shadow: 0 0 24px var(--lime);
}

.hero-inner {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 48px;
  align-items: center;
  width: 100%;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 26px;
}

.eyebrow::before {
  content: "";
  width: 30px;
  height: 1.5px;
  background: var(--cyan);
}

h1.title {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(46px, 8vw, 92px);
  line-height: .92;
  letter-spacing: -.02em;
}

h1.title .lime { color: var(--lime); }

.subtitle {
  margin-top: 24px;
  font-size: clamp(16px, 2.2vw, 20px);
  color: var(--mist);
  max-width: 540px;
  line-height: 1.5;
}

.subtitle b { color: var(--white); font-weight: 600; }

.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.btn {
  font-family: var(--display);
  font-weight: 600;
  font-size: 15px;
  padding: 16px 30px;
  border-radius: 100px;
  cursor: pointer;
  border: 0;
  transition: transform .2s, box-shadow .2s, background .2s;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.btn-primary { background: var(--lime); color: var(--ink); }

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 40px -10px rgba(196, 214, 0, .55);
}

.btn-ghost {
  background: transparent;
  color: var(--white);
  border: 1.5px solid var(--line);
}

.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }

/* event meta card */
.event-card {
  background: linear-gradient(160deg, rgba(35, 34, 70, .9), rgba(19, 18, 43, .6));
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 30px;
  backdrop-filter: blur(8px);
}

.event-card h3 {
  font-family: var(--display);
  font-size: 13px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mist-2);
  font-weight: 600;
  margin-bottom: 22px;
}

.meta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 0;
  border-top: 1px solid var(--line-2);
}

.meta-row:first-of-type { border-top: 0; padding-top: 0; }

.meta-ic {
  flex: 0 0 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(0, 181, 226, .12);
  color: var(--cyan);
}

.meta-ic.lime { background: rgba(196, 214, 0, .14); color: var(--lime); }

.meta-row .lbl {
  font-size: 11.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--mist-2);
}

.meta-row .val {
  font-family: var(--display);
  font-weight: 600;
  font-size: 16.5px;
}

.tagline {
  margin-top: 22px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--mist);
}

.tagline b { color: var(--lime); font-weight: 600; }


/* ---------- SECTION SHELL ---------- */
section { position: relative; }

.sec { padding: 108px 0; }

.sec-head {
  max-width: 760px;
  margin-bottom: 56px;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--lime);
  margin-bottom: 18px;
}

.kicker .num { color: var(--mist-2); }

.sec-head h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(30px, 4.4vw, 46px);
  line-height: 1.05;
  letter-spacing: -.015em;
}

.sec-head p.lead {
  margin-top: 18px;
  color: var(--mist);
  font-size: 17px;
  max-width: 640px;
}


/* ---------- ABOUT ---------- */
.about { background: linear-gradient(180deg, var(--ink), var(--ink-2)); }

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.about-card {
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 32px 28px;
  transition: transform .3s, border-color .3s;
}

.about-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 181, 226, .4);
}

.about-card .ico {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  background: rgba(0, 71, 187, .25);
  display: grid;
  place-items: center;
  color: var(--cyan);
  margin-bottom: 20px;
}

.about-card h3 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 19px;
  margin-bottom: 12px;
}

.about-card p { color: var(--mist); font-size: 14.5px; line-height: 1.6; }

.about-card.accent {
  background: linear-gradient(155deg, var(--royal), #06367e);
  border-color: transparent;
}

.about-card.accent .ico { background: rgba(255, 255, 255, .16); color: var(--lime); }
.about-card.accent p   { color: rgba(255, 255, 255, .86); }


/* ---------- SPEAKERS ---------- */
.speakers { background: var(--ink); }

.spk-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.spk {
  position: relative;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 22px;
  overflow: hidden;
  transition: transform .3s, border-color .3s;
}

.spk:hover {
  transform: translateY(-8px);
  border-color: rgba(196, 214, 0, .5);
}

.spk-photo {
  position: relative;
  aspect-ratio: 1 / 1;
  display: grid;
  place-items: center;
  background: radial-gradient(120% 120% at 50% 20%, var(--royal), var(--ink-2));
  overflow: hidden;
}

.spk-photo img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.spk-photo .ring {
  position: absolute;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  border: 2px solid rgba(0, 181, 226, .5);
  box-shadow: 0 0 50px rgba(0, 71, 187, .6);
}

.spk-photo .ini {
  font-family: var(--display);
  font-weight: 800;
  font-size: 40px;
  color: var(--white);
  z-index: 2;
}

.spk-photo .brain {
  position: absolute;
  bottom: 10px;
  right: 12px;
  width: 34px;
  color: var(--lime);
  opacity: .85;
}

.spk-body { padding: 22px 22px 26px; }

.spk-flag {
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--cyan);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 10px;
}

.spk-body h3 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.2;
  margin-bottom: 8px;
}

.spk-body p { color: var(--mist); font-size: 13px; line-height: 1.5; }

.spk-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--lime);
  color: var(--ink);
  font-family: var(--display);
  font-weight: 700;
  font-size: 10.5px;
  letter-spacing: .08em;
  padding: 5px 11px;
  border-radius: 100px;
  z-index: 3;
}

.guest {
  margin-top: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  background: linear-gradient(120deg, rgba(35, 34, 70, .7), rgba(19, 18, 43, .4));
  border: 1px dashed var(--line);
  border-radius: 20px;
  padding: 26px 32px;
  text-align: center;
}

.guest .gl {
  font-family: var(--display);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--lime);
  font-weight: 600;
}

.guest .gn { font-family: var(--display); font-weight: 700; font-size: 24px; }
.guest .gp { font-size: 12px; color: var(--mist-2); }


/* ---------- REGISTER / FORM ---------- */
.register { background: linear-gradient(180deg, var(--ink-2), var(--ink)); }

.reg-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 54px;
  align-items: start;
}

.reg-aside h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.05;
  letter-spacing: -.015em;
}

.reg-aside .lead {
  margin-top: 18px;
  color: var(--mist);
  font-size: 16px;
  max-width: 420px;
}

.reg-points {
  margin-top: 30px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.reg-point {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.reg-point .ck {
  flex: 0 0 26px;
  height: 26px;
  border-radius: 8px;
  background: rgba(196, 214, 0, .16);
  color: var(--lime);
  display: grid;
  place-items: center;
}

.reg-point span { font-size: 14.5px; color: var(--mist); }
.reg-point b    { color: #fff; font-weight: 600; }

form {
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 34px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.field { display: flex; flex-direction: column; gap: 8px; }
.field.full { grid-column: 1 / -1; }

.field label {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--mist);
}

.field label .req { color: var(--lime); }

.field input,
.field select {
  font-family: var(--body);
  font-size: 15px;
  color: #fff;
  background: var(--ink-3);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 13px 15px;
  transition: border-color .2s, box-shadow .2s;
}

.field input::placeholder { color: var(--mist-2); }

.field input:focus,
.field select:focus {
  outline: 0;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 181, 226, .15);
}

.field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='none' stroke='%237E82A6' stroke-width='2'%3E%3Cpath d='M3 5l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 15px center;
}

.attend { display: flex; gap: 12px; margin-top: 2px; }
.attend label { flex: 1; cursor: pointer; }
.attend input { position: absolute; opacity: 0; pointer-events: none; }

.attend .opt {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: 12px;
  font-family: var(--display);
  font-weight: 600;
  font-size: 14px;
  color: var(--mist);
  transition: all .2s;
}

.attend input:checked + .opt {
  border-color: var(--lime);
  background: rgba(196, 214, 0, .12);
  color: var(--lime);
}

form .btn-primary {
  width: 100%;
  justify-content: center;
  margin-top: 24px;
  font-size: 16px;
}

.form-note {
  margin-top: 14px;
  text-align: center;
  font-size: 12px;
  color: var(--mist-2);
}

.form-note a { color: var(--cyan); }

.form-ok { display: none; text-align: center; padding: 30px 10px; }
.form-ok.show { display: block; }

.form-ok .big {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(196, 214, 0, .16);
  color: var(--lime);
  display: grid;
  place-items: center;
  margin: 0 auto 20px;
}

.form-ok h3 {
  font-family: var(--display);
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 10px;
}

.form-ok p { color: var(--mist); font-size: 15px; }


/* ---------- FOOTER ---------- */
footer {
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  padding: 72px 0 34px;
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 44px;
  border-bottom: 1px solid var(--line);
}

.foot-about h4 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 16px;
  margin: 20px 0 12px;
}

.foot-about p {
  color: var(--mist);
  font-size: 13.5px;
  line-height: 1.65;
  max-width: 420px;
}

.foot-col h5 {
  font-family: var(--display);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist-2);
  margin-bottom: 18px;
}

.foot-col a,
.foot-col p {
  display: block;
  color: var(--mist);
  font-size: 14px;
  margin-bottom: 12px;
  transition: color .2s;
}

.foot-col a:hover { color: var(--cyan); }

.foot-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  padding-top: 26px;
  font-size: 12.5px;
  color: var(--mist-2);
}

.foot-bottom a       { color: var(--mist-2); }
.foot-bottom a:hover { color: var(--cyan); }


/* ---------- REVEAL ANIMATION ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s cubic-bezier(.2, .7, .3, 1), transform .7s cubic-bezier(.2, .7, .3, 1);
}

.reveal.in { opacity: 1; transform: none; }


/* ---------- MOBILE MENU ---------- */
.nav-links.open {
  display: flex;
  position: absolute;
  top: 74px;
  left: 0;
  right: 0;
  flex-direction: column;
  background: rgba(15, 14, 35, .97);
  backdrop-filter: blur(14px);
  padding: 22px 24px;
  gap: 18px;
  border-bottom: 1px solid var(--line);
}


/* ---------- RESPONSIVE ---------- */
@media (max-width: 980px) {
  .hero-inner   { grid-template-columns: 1fr; gap: 40px; }
  .event-card   { max-width: 520px; }
  .about-grid   { grid-template-columns: 1fr 1fr; }
  .spk-grid     { grid-template-columns: 1fr 1fr; }
  .reg-grid     { grid-template-columns: 1fr; gap: 40px; }
  .foot-grid    { grid-template-columns: 1fr 1fr; }
  .foot-about   { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .nav-links          { display: none; }
  .nav-links.open a   { font-size: 16px; }
  .about-grid         { grid-template-columns: 1fr; }
  .spk-grid           { grid-template-columns: 1fr; }
  .form-grid          { grid-template-columns: 1fr; }
  .foot-grid          { grid-template-columns: 1fr; }
  .sec                { padding: 78px 0; }
  .arc.c2             { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html    { scroll-behavior: auto; }
}