/* =================================================================
  PROTON EVENTWEEK — Main Stylesheet
  Mobile-first, dark theme, glassmorphism accents
  ================================================================= */

/* ─── 1. CSS CUSTOM PROPERTIES ────────────────────────────────── */
:root {
  /* Brand palette */
  --clr-black:     #000000;
  --clr-white:     #ffffff;
  --clr-primary:   #f5c133;
  --clr-primary-d: #d4a41e;
  --clr-primary-l: #ffd166;
  --clr-accent:    #f0e0d1;
  --clr-secondary: #381651;
  --clr-sec-light: #4d1f6e;

  /* Semantic tokens – dark theme (default) */
  --bg:            #080808;
  --bg-alt:        #0e0e0e;
  --bg-card:       rgba(255,255,255,.045);
  --bg-card-h:     rgba(255,255,255,.08);
  --glass:         rgba(255,255,255,.06);
  --glass-border:  rgba(255,255,255,.09);

  --text:          #f2f2f2;
  --text-2:        rgba(242,242,242,.65);
  --text-3:        rgba(242,242,242,.35);

  --shadow-s:  0 2px  8px rgba(0,0,0,.35);
  --shadow-m:  0 8px 24px rgba(0,0,0,.45);
  --shadow-l:  0 20px 50px rgba(0,0,0,.55);
  --shadow-p:  0 4px 22px rgba(245,193,51,.3);

  --radius-s:  8px;
  --radius-m: 14px;
  --radius-l: 20px;
  --radius-xl:28px;

  --nav-h: 68px;
  --ease:  cubic-bezier(.4,0,.2,1);
}

/* ─── 2. RESET & BASE ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', 'Roboto', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background .35s var(--ease), color .35s var(--ease);
}

img { max-width: 100%; display: block; }
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }

:focus-visible {
  outline: 2px solid var(--clr-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: rgba(245,193,51,.3); }

/* ─── 3. TYPOGRAPHY ───────────────────────────────────────────── */
h1,h2,h3,h4 {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
}

/* ─── 4. UTILITIES ────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: 20px;
}

/* Animated underline for links */
.nav-link, .mobile-link, .footer a {
  position: relative;
}
.nav-link::after, .mobile-link::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 2px;
  background: var(--clr-primary);
  border-radius: 2px;
  transition: width .3s var(--ease);
}
.nav-link:hover::after,
.nav-link.active::after,
.mobile-link:hover::after { width: 100%; }

/* ─── 5. LOADING SCREEN ───────────────────────────────────────── */
#loading-screen {
  position: fixed;
  inset: 0;
  background: var(--clr-black);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity .5s var(--ease), visibility .5s;
}
#loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader { text-align: center; }

.loader-logo {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 800;
  color: var(--clr-primary);
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-bottom: 28px;
  letter-spacing: -.02em;
}
.loader-logo-icon {
  width: clamp(34px, 4.5vw, 48px);
  height: clamp(34px, 4.5vw, 48px);
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 0 2px rgba(245,193,51,.2), 0 8px 22px rgba(245,193,51,.2);
}

.loader-bar {
  width: 220px;
  height: 3px;
  background: rgba(255,255,255,.1);
  border-radius: 2px;
  overflow: hidden;
  margin: 0 auto 14px;
}
.loader-fill {
  height: 100%;
  width: 0%;
  background: var(--clr-primary);
  border-radius: 2px;
  animation: loadProgress 1.6s var(--ease) forwards;
}
.loader-label {
  font-size: .85rem;
  color: rgba(255,255,255,.4);
  letter-spacing: .05em;
}

@keyframes loadProgress {
  0%   { width: 0%; }
  60%  { width: 75%; }
  100% { width: 100%; }
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── 6. SCROLL PROGRESS BAR ──────────────────────────────────── */
#scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-primary-l));
  z-index: 9998;
  transition: width .1s linear;
  border-radius: 0 2px 2px 0;
}

/* ─── 7. NAVBAR ───────────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: background .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
  border-bottom: 1px solid transparent;
}
#navbar.scrolled {
  background: rgba(8,8,8,.85);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  border-bottom-color: rgba(255,255,255,.06);
  box-shadow: 0 4px 30px rgba(0,0,0,.4);
}
.nav-container {
  display: flex;
  align-items: center;
  gap: 24px;
  height: var(--nav-h);
  padding-inline: 24px;
  max-width: 1240px;
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text);
  flex-shrink: 0;
  transition: color .2s;
}
.nav-logo:hover { color: var(--clr-primary); }
.logo-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 0 1px rgba(245,193,51,.28);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease);
}
.nav-logo:hover .logo-icon {
  transform: scale(1.05);
  box-shadow: 0 0 0 1px rgba(245,193,51,.45), 0 4px 14px rgba(245,193,51,.2);
}

.nav-links {
  display: none;
  gap: 4px;
  margin-inline-start: auto;
}
.nav-link {
  padding: 6px 12px;
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-2);
  border-radius: var(--radius-s);
  transition: color .2s, background .2s;
}
.nav-link:hover, .nav-link.active { color: var(--text); background: var(--glass); }

.nav-actions {
  display: none;
  align-items: center;
  gap: 10px;
}

/* Theme toggle button */
.theme-btn {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  color: var(--text-2);
  border: 1px solid var(--glass-border);
  transition: color .2s, border-color .2s, background .2s;
}
.theme-btn:hover { color: var(--clr-primary); border-color: var(--clr-primary); background: rgba(245,193,51,.08); }
.theme-btn svg { width: 17px; height: 17px; }

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  margin-inline-start: auto;
  z-index: 10;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .3s var(--ease), opacity .3s, width .3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; width: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: flex;
  flex-direction: column;
  padding: 0 24px;
  gap: 4px;
  background: rgba(8,8,8,.96);
  border-top: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: max-height .4s var(--ease), padding .4s var(--ease), opacity .25s var(--ease), visibility .25s var(--ease);
}
.mobile-menu.open {
  max-height: 340px;
  padding: 16px 24px 24px;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.mobile-link {
  padding: 10px 12px;
  font-size: .95rem;
  font-weight: 500;
  color: var(--text-2);
  border-radius: var(--radius-s);
  transition: color .2s, background .2s;
}
.mobile-link:hover { color: var(--text); background: var(--glass); }
.mobile-cta { margin-top: 12px; text-align: center; }

/* ─── 8. GLOBAL BUTTONS ────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 26px;
  font-family: 'Poppins', sans-serif;
  font-size: .9rem;
  font-weight: 600;
  border-radius: 50px;
  transition: all .25s var(--ease);
  cursor: pointer;
  white-space: nowrap;
  border: none;
  text-decoration: none;
}
.btn-primary {
  background: var(--clr-primary);
  color: #0a0a0a;
  box-shadow: var(--shadow-p);
}
.btn-primary:hover, .btn-primary:focus-visible {
  background: var(--clr-primary-l);
  box-shadow: 0 6px 30px rgba(245,193,51,.45);
  transform: translateY(-2px) scale(1.02);
}
.btn-ghost {
  background: transparent;
  color: var(--text-2);
  border: 1px solid var(--glass-border);
}
.btn-ghost:hover, .btn-ghost:focus-visible {
  color: var(--text);
  border-color: rgba(255,255,255,.22);
  background: var(--glass);
  transform: translateY(-2px);
}

/* ─── 9. HERO SECTION ─────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: calc(var(--nav-h) + 40px) 20px 80px;
  background: radial-gradient(ellipse 80% 60% at 20% 40%, rgba(56,22,81,.55) 0%, transparent 65%),
              radial-gradient(ellipse 60% 50% at 80% 60%, rgba(245,193,51,.08) 0%, transparent 60%),
              var(--bg);
  text-align: center;
}

/* Animated background shapes */
.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(65px);
  opacity: .18;
  will-change: transform;
}
.shape-1 {
  width: 520px; height: 520px;
  background: radial-gradient(circle, var(--clr-secondary), transparent 70%);
  top: -180px; left: -120px;
  animation: floatA 22s ease-in-out infinite;
}
.shape-2 {
  width: 380px; height: 380px;
  background: radial-gradient(circle, var(--clr-primary), transparent 70%);
  top: 15%; right: -80px;
  animation: floatB 18s ease-in-out infinite;
  opacity: .12;
}
.shape-3 {
  width: 280px; height: 280px;
  background: radial-gradient(circle, #7e22ce, transparent 70%);
  bottom: 10%; left: 20%;
  animation: floatA 26s ease-in-out infinite reverse;
}
.shape-4 {
  width: 180px; height: 180px;
  background: radial-gradient(circle, var(--clr-primary-l), transparent 70%);
  bottom: 20%; right: 15%;
  animation: floatB 14s ease-in-out infinite;
  opacity: .10;
}
.shape-5 {
  width: 450px; height: 450px;
  background: radial-gradient(circle, rgba(56,22,81,.8), transparent 70%);
  top: 40%; left: 50%;
  transform: translate(-50%,-50%);
  animation: floatC 30s ease-in-out infinite;
  opacity: .2;
}

.hero-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 30%, transparent 100%);
}
/* Hero content */
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

/* Countdown */
.countdown-wrap {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 10px 22px;
  margin-bottom: 28px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  backdrop-filter: blur(10px);
  font-size: .82rem;
  color: var(--text-2);
}
.countdown-label { white-space: nowrap; }
.countdown-timer { display: flex; align-items: center; gap: 6px; }
.cd-item { display: flex; flex-direction: column; align-items: center; }
.cd-item span {
  font-family: 'Poppins', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-primary);
  line-height: 1;
  min-width: 2.2ch;
  text-align: center;
}
.cd-item small {
  font-size: .64rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .06em;
}
.cd-sep { font-weight: 700; color: var(--clr-primary); line-height: 1; margin-bottom: 12px; }

.hero-eyebrow {
  font-size: .88rem;
  color: var(--text-2);
  margin-bottom: 16px;
  letter-spacing: .03em;
}

.hero-title {
  font-size: clamp(2.8rem, 8vw, 5.5rem);
  font-weight: 900;
  letter-spacing: -.03em;
  line-height: 1.05;
  margin-bottom: 24px;
}
.title-plain   { display: block; }
.title-gradient {
  display: block;
  background: linear-gradient(135deg, var(--clr-primary) 20%, var(--clr-primary-l) 55%, #ffb347 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 28px rgba(245,193,51,.28));
}

.hero-subtitle {
  font-size: clamp(.95rem, 2.2vw, 1.15rem);
  color: var(--text-2);
  max-width: 580px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-bottom: 48px;
}
.btn-hero { font-size: 1rem; padding: 14px 32px; }

/* Stats */
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-family: 'Poppins', sans-serif;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--clr-primary);
  line-height: 1;
}
.stat-label { font-size: .8rem; color: var(--text-3); font-weight: 500; }
.stat-divider { width: 1px; height: 40px; background: var(--glass-border); }

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 28px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-3);
  font-size: .75rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  animation: fadeInUp 1s 1.8s both;
  transition: opacity .35s var(--ease), transform .35s var(--ease), visibility .35s var(--ease);
}
.scroll-indicator.hidden {
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 12px);
}
.scroll-mouse {
  width: 22px; height: 36px;
  border: 2px solid var(--text-3);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}
.scroll-wheel {
  width: 3px; height: 7px;
  background: var(--clr-primary);
  border-radius: 2px;
  animation: scrollWheel 1.8s ease-in-out infinite;
}

/* ─── 10. EVENTS SECTION ──────────────────────────────────────── */
.events-section {
  padding: 100px 0 80px;
  background: var(--bg-alt);
}

/* Section header */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-badge {
  display: inline-block;
  padding: 5px 16px;
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--clr-primary);
  background: rgba(245,193,51,.1);
  border: 1px solid rgba(245,193,51,.2);
  border-radius: 50px;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: -.02em;
}
.section-subtitle {
  font-size: 1rem;
  color: var(--text-2);
  max-width: 560px;
  margin-inline: auto;
  line-height: 1.65;
}

/* Events grid */
.events-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

/* Event card */
.event-card {
  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-l);
  overflow: hidden;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
  backdrop-filter: blur(8px);
}
.event-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-l);
  border-color: rgba(245,193,51,.2);
}

/* Card – icon side */
.card-icon-side {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 16px;
  padding: 20px 20px 0;
  flex-wrap: wrap;
}
.card-icon-wrapper {
  width: 68px; height: 68px;
  border-radius: var(--radius-m);
  flex-shrink: 0;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0,0,0,.25);
  border: 1px solid rgba(255,255,255,.06);
}
.card-icon-wrapper svg { width: 100%; height: 100%; }

.card-day {
  font-family: 'Poppins', sans-serif;
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--clr-primary);
  background: rgba(245,193,51,.1);
  border: 1px solid rgba(245,193,51,.2);
  padding: 3px 10px;
  border-radius: 50px;
  flex-shrink: 0;
}
.card-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: .78rem;
  color: var(--text-3);
}

/* Card – body */
.card-body {
  flex: 1;
  padding: 16px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.card-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -.01em;
}
.card-level {
  font-size: .68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  padding: 3px 9px;
  border-radius: 50px;
  flex-shrink: 0;
}
.card-level.beginner    { color: #10b981; background: rgba(16,185,129,.12);  border: 1px solid rgba(16,185,129,.2); }
.card-level.intermediate{ color: #f59e0b; background: rgba(245,158,11,.12); border: 1px solid rgba(245,158,11,.2); }
.card-level.advanced    { color: #ef4444; background: rgba(239,68,68,.12);  border: 1px solid rgba(239,68,68,.2); }

.card-desc {
  font-size: .88rem;
  line-height: 1.65;
  color: var(--text-2);
}

/* Card action buttons */
.card-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; padding-top: 4px; }

.btn-card {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-family: 'Inter', sans-serif;
  font-size: .8rem;
  font-weight: 600;
  border-radius: var(--radius-s);
  cursor: pointer;
  transition: all .2s var(--ease);
  text-decoration: none;
  border: 1px solid transparent;
  white-space: nowrap;
  position: relative;
}
.btn-register {
  background: var(--clr-primary);
  color: #0a0a0a;
  box-shadow: 0 2px 10px rgba(245,193,51,.25);
}
.btn-register:hover, .btn-register:focus-visible {
  background: var(--clr-primary-l);
  box-shadow: 0 4px 18px rgba(245,193,51,.4);
  transform: translateY(-2px) scale(1.03);
}
.btn-photos {
  background: var(--bg-card);
  color: var(--text-2);
  border-color: var(--glass-border);
}
.btn-photos:hover, .btn-photos:focus-visible {
  background: var(--bg-card-h);
  color: var(--text);
  border-color: rgba(255,255,255,.18);
  transform: translateY(-2px) scale(1.03);
}
.btn-software {
  background: rgba(245,193,51,.07);
  color: var(--clr-primary);
  border-color: rgba(245,193,51,.2);
}
.btn-software:hover, .btn-software:focus-visible {
  background: rgba(245,193,51,.15);
  border-color: rgba(245,193,51,.4);
  box-shadow: 0 4px 14px rgba(245,193,51,.2);
  transform: translateY(-2px) scale(1.03);
}

/* CSS tooltip for .btn-software */
.btn-software::before,
.btn-software::after {
  pointer-events: none;
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  transition: opacity .2s, visibility .2s, transform .2s;
  opacity: 0;
  visibility: hidden;
}
.btn-software::after {
  content: attr(data-tooltip);
  background: rgba(10,10,10,.95);
  color: var(--clr-accent);
  font-size: .76rem;
  line-height: 1.5;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  padding: 9px 14px;
  border-radius: var(--radius-s);
  white-space: normal;
  max-width: 240px;
  min-width: 160px;
  text-align: left;
  border: 1px solid rgba(245,193,51,.25);
  z-index: 200;
  transform: translateX(-50%) translateY(4px);
}
.btn-software::before {
  content: '';
  border: 6px solid transparent;
  border-top-color: rgba(10,10,10,.95);
  bottom: calc(100% + 2px);
  z-index: 201;
  transform: translateX(-50%);
}
.btn-software:hover::after,
.btn-software:focus-visible::after,
.btn-software.tooltip-visible::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.btn-software:hover::before,
.btn-software:focus-visible::before,
.btn-software.tooltip-visible::before {
  opacity: 1;
  visibility: visible;
}

/* ─── 10c. SOFTWARE DOWNLOAD MODAL ──────────────────────────── */
.modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(2px);
  opacity: 0;
  transition: opacity .3s ease;
}

.modal-content {
  position: relative;
  background: var(--bg-card);
  border: 1px solid rgba(245,193,51,.2);
  border-radius: var(--radius-l);
  box-shadow: 0 20px 60px rgba(0,0,0,.8);
  padding: 0;
  max-width: 420px;
  width: 90%;
  transform: scale(0.95) translateY(20px);
  opacity: 0;
  transition: opacity .3s ease, transform .3s ease;
  max-height: 80vh;
  overflow-y: auto;
  backdrop-filter: blur(12px);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid rgba(245,193,51,.15);
  background: rgba(245,193,51,.05);
}

.modal-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-primary);
  margin: 0;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-2);
  cursor: pointer;
  padding: 4px 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color .2s ease;
  border-radius: 4px;
}

.modal-close:hover,
.modal-close:focus-visible {
  color: var(--clr-primary);
  outline: none;
}

.modal-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.software-link-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(245,193,51,.08);
  border: 1px solid rgba(245,193,51,.15);
  border-radius: var(--radius-s);
  transition: all .2s ease;
}

.software-link-item svg {
  color: var(--clr-primary);
  flex-shrink: 0;
}

.software-link-item a {
  flex: 1;
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  font-size: .95rem;
  transition: color .2s ease;
}

.software-link-item a:hover,
.software-link-item a:focus-visible {
  color: var(--clr-primary);
  outline: none;
}

.software-link-item:hover {
  background: rgba(245,193,51,.14);
  border-color: rgba(245,193,51,.3);
  transform: translateX(4px);
}

/* Modal open state */
.modal.open {
  pointer-events: auto;
}

.modal.open .modal-backdrop {
  opacity: 1;
}

.modal.open .modal-content {
  opacity: 1;
  transform: scale(1) translateY(0);
}

/* ─── 11. WHY SECTION ─────────────────────────────────────────── */
.why-section {
  padding: 100px 0;
  background: var(--clr-secondary);
  position: relative;
  overflow: hidden;
}
.why-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 60% at 80% 50%, rgba(245,193,51,.06) 0%, transparent 60%);
  pointer-events: none;
}

.why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.why-card {
  padding: 32px 28px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-l);
  text-align: center;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
  backdrop-filter: blur(6px);
}
.why-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 40px rgba(0,0,0,.3);
  border-color: rgba(245,193,51,.2);
}
.why-icon {
  width: 64px; height: 64px;
  margin: 0 auto 20px;
}
.why-icon svg { width: 100%; height: 100%; }
.why-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}
.why-card p { font-size: .88rem; color: rgba(255,255,255,.6); line-height: 1.65; }

/* ─── 12. ORGANIZER SECTION ───────────────────────────────────── */
.organizer-section {
  padding: 100px 0;
  background: var(--bg);
}
.organizer-card {
  display: flex;
  flex-direction: column;
  gap: 40px;
  padding: 40px 32px;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(8px);
}

.organizer-logo-col { text-align: center; }
.proton-logo-svg {
  width: 110px; height: 110px;
  margin: 0 auto 20px;  animation: rotateSlow 20s linear infinite;  
}
.proton-logo-svg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(245,193,51,.28), 0 10px 28px rgba(245,193,51,.2);
}
.organizer-name {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--clr-primary);
  letter-spacing: -.03em;
}
.organizer-tagline { font-size: .85rem; color: var(--text-2); margin-top: 4px; }

.organizer-info-col h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text);
}
.organizer-info-col p {
  font-size: .9rem;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 12px;
}

.organizer-social {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.social-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 18px;
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-2);
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  transition: all .25s var(--ease);
}
.social-link svg { width: 16px; height: 16px; flex-shrink: 0; }
.social-link:hover, .social-link:focus-visible {
  color: var(--clr-primary);
  border-color: rgba(245,193,51,.35);
  background: rgba(245,193,51,.07);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(245,193,51,.15);
}

/* ─── 13. FOOTER ──────────────────────────────────────────────── */
.footer {
  background: #050505;
  border-top: 1px solid rgba(255,255,255,.06);
  padding: 60px 0 0;
  color: rgba(255,255,255,.55);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  padding-bottom: 48px;
}
.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Poppins', sans-serif;
  font-size: 1.15rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  transition: color .2s;
}
.footer-logo:hover { color: var(--clr-primary); }
.footer-logo-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 0 1px rgba(245,193,51,.35);
}
.footer-brand p { font-size: .85rem; line-height: 1.65; max-width: 280px; }

.footer-col h4 {
  font-family: 'Poppins', sans-serif;
  font-size: .85rem;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 16px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col li {
  font-size: .85rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-col li svg { flex-shrink: 0; opacity: .6; }
.footer-col a { color: rgba(255,255,255,.5); transition: color .2s; }
.footer-col a:hover { color: var(--clr-primary); }

.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}
.footer-social a {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.08);
  color: rgba(255,255,255,.45);
  transition: all .25s var(--ease);
}
.footer-social a svg { width: 16px; height: 16px; }
.footer-social a:hover, .footer-social a:focus-visible {
  color: var(--clr-primary);
  border-color: rgba(245,193,51,.4);
  background: rgba(245,193,51,.08);
  transform: translateY(-2px);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  border-top: 1px solid rgba(255,255,255,.06);
  padding: 20px 0;
  font-size: .8rem;
  color: rgba(255,255,255,.3);
}

/* ─── 14. SCROLL-TO-TOP BUTTON ─────────────────────────────────── */
#scroll-top {
  position: fixed;
  bottom: 28px; right: 24px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--clr-primary);
  color: #0a0a0a;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-p);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all .3s var(--ease);
  z-index: 500;
}
#scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
#scroll-top:hover, #scroll-top:focus-visible {
  background: var(--clr-primary-l);
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(245,193,51,.45);
}
#scroll-top svg { width: 20px; height: 20px; }

/* ─── 15. GLOBAL TOOLTIP (JS-managed) ─────────────────────────── */
.tooltip {
  position: fixed;
  background: rgba(10,10,10,.95);
  color: var(--clr-accent);
  font-size: .76rem;
  line-height: 1.5;
  padding: 9px 14px;
  border-radius: var(--radius-s);
  border: 1px solid rgba(245,193,51,.25);
  max-width: 240px;
  pointer-events: none;
  z-index: 9000;
  opacity: 0;
  visibility: hidden;
  transition: opacity .2s, visibility .2s;
  white-space: normal;
}
.tooltip.show { opacity: 1; visibility: visible; }

/* ─── 16. ANIMATIONS ──────────────────────────────────────────── */
@keyframes floatA {
  0%,100% { transform: translate(0,0) scale(1); }
  33%      { transform: translate(30px,-40px) scale(1.05); }
  66%      { transform: translate(-20px,20px) scale(.95); }
}
@keyframes floatB {
  0%,100% { transform: translate(0,0) rotate(0deg); }
  50%      { transform: translate(-35px,25px) rotate(180deg); }
}
@keyframes floatC {
  0%,100% { transform: translate(-50%,-50%) scale(1); }
  50%      { transform: translate(-50%,-50%) scale(1.15); }
}
@keyframes scrollWheel {
  0%   { transform: translateY(0); opacity: 1; }
  80%  { transform: translateY(10px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}
@keyframes rotateSlow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateX(-50%) translateY(14px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}
@keyframes pulseGlow {
  0%,100% { box-shadow: 0 0 0 0 rgba(245,193,51,.4); }
  50%      { box-shadow: 0 0 0 8px rgba(245,193,51,0); }
}

/* ─── 17. RESPONSIVE — tablet 640px ───────────────────────────── */
@media (min-width: 640px) {
  .events-grid  { grid-template-columns: repeat(2, 1fr); }
  .why-grid     { grid-template-columns: repeat(2, 1fr); }
  .footer-grid  { grid-template-columns: 1fr 1fr; }

  .card-icon-side {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 0 20px 20px;
    width: 130px;
    flex-shrink: 0;
    border-right: 1px solid var(--glass-border);
  }
  .event-card {
    flex-direction: row;
    align-items: stretch;
  }
  .card-body { padding: 20px; }
}

/* Tablet 768px */
@media (min-width: 768px) {
  .nav-links   { display: flex; }
  .nav-actions { display: flex; }
  .hamburger   { display: none; }
  .mobile-menu { display: none; }

  .organizer-card {
    flex-direction: row;
    align-items: flex-start;
    gap: 48px;
  }
  .organizer-logo-col { flex-shrink: 0; width: 200px; }
}

/* Desktop 1024px */
@media (min-width: 1024px) {
  .events-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid    { grid-template-columns: repeat(4, 1fr); }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
}

/* Large desktop 1360px */
@media (min-width: 1360px) {
  .events-grid { grid-template-columns: repeat(3, 1fr); }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
}