/* ========================================
   CALLAITA — Event Website Design System
   ======================================== */

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

/* CSS Custom Properties */
:root {
  --black: #0a0a0a;
  --black-light: #141414;
  --black-card: #1a1a1a;
  --dark-red: #8B0000;
  --dark-red-deep: #5c0000;
  --crimson: #DC143C;
  --crimson-bright: #ff1744;
  --white: #f5f5f5;
  --white-soft: rgba(255, 255, 255, 0.85);
  --white-dim: rgba(255, 255, 255, 0.5);
  --glow-red: rgba(220, 20, 60, 0.4);
  --glow-red-strong: rgba(220, 20, 60, 0.7);
  --font-main: 'Outfit', sans-serif;
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
}

body {
  font-family: var(--font-main);
  background: var(--black);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

img {
  max-width: 100%;
  display: block;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
}

input {
  font-family: inherit;
  outline: none;
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  z-index: 1;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(139, 0, 0, 0.3) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(220, 20, 60, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(92, 0, 0, 0.25) 0%, transparent 60%),
    var(--black);
  animation: heroPulse 8s ease-in-out infinite alternate;
  z-index: -2;
}

@keyframes heroPulse {
  0% {
    background:
      radial-gradient(ellipse at 20% 50%, rgba(139, 0, 0, 0.3) 0%, transparent 60%),
      radial-gradient(ellipse at 80% 20%, rgba(220, 20, 60, 0.15) 0%, transparent 50%),
      radial-gradient(ellipse at 50% 80%, rgba(92, 0, 0, 0.25) 0%, transparent 60%),
      var(--black);
  }

  50% {
    background:
      radial-gradient(ellipse at 60% 30%, rgba(139, 0, 0, 0.35) 0%, transparent 55%),
      radial-gradient(ellipse at 30% 70%, rgba(220, 20, 60, 0.2) 0%, transparent 50%),
      radial-gradient(ellipse at 80% 60%, rgba(92, 0, 0, 0.3) 0%, transparent 55%),
      var(--black);
  }

  100% {
    background:
      radial-gradient(ellipse at 40% 60%, rgba(139, 0, 0, 0.4) 0%, transparent 60%),
      radial-gradient(ellipse at 70% 40%, rgba(220, 20, 60, 0.18) 0%, transparent 55%),
      radial-gradient(ellipse at 20% 30%, rgba(92, 0, 0, 0.2) 0%, transparent 50%),
      var(--black);
  }
}

#particleCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

.hero__content {
  text-align: center;
  z-index: 2;
  padding: 2rem;
  animation: fadeInUp 1.2s ease-out;
}

.hero__logo {
  width: min(80vw, 550px);
  margin: 0 auto 1.5rem;
  filter: drop-shadow(0 0 40px rgba(220, 20, 60, 0.5)) drop-shadow(0 0 80px rgba(139, 0, 0, 0.3));
  animation: logoPulse 3s ease-in-out infinite alternate;
}

@keyframes logoPulse {
  0% {
    filter: drop-shadow(0 0 40px rgba(220, 20, 60, 0.5)) drop-shadow(0 0 80px rgba(139, 0, 0, 0.3));
  }

  100% {
    filter: drop-shadow(0 0 60px rgba(220, 20, 60, 0.7)) drop-shadow(0 0 120px rgba(139, 0, 0, 0.5));
  }
}

.hero__tagline {
  font-size: clamp(1.1rem, 3vw, 1.6rem);
  font-weight: 600;
  color: var(--white-soft);
  letter-spacing: 2px;
  text-transform: uppercase;
  text-shadow: 0 0 20px rgba(220, 20, 60, 0.4);
  margin-bottom: 0.6rem;
}

.hero__sub {
  font-size: clamp(0.85rem, 2.2vw, 1.05rem);
  color: var(--white-dim);
  font-weight: 400;
  letter-spacing: 1px;
  font-style: italic;
  margin-bottom: 2rem;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1rem 2rem;
  background: linear-gradient(135deg, var(--dark-red), var(--crimson));
  color: var(--white);
  font-size: clamp(0.85rem, 2vw, 1.05rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  border-radius: 50px;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 25px rgba(220, 20, 60, 0.35);
  animation: ctaPulse 2.5s ease-in-out infinite;
}

.hero__cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  animation: ctaShimmer 3s ease-in-out infinite;
}

.hero__cta:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 8px 40px rgba(220, 20, 60, 0.5), 0 0 60px rgba(220, 20, 60, 0.2);
}

.hero__cta:active {
  transform: translateY(0) scale(0.98);
}

.hero__cta svg {
  transition: transform var(--transition);
  flex-shrink: 0;
}

.hero__cta:hover svg {
  transform: translateX(4px);
}

@keyframes ctaPulse {
  0%, 100% { box-shadow: 0 4px 25px rgba(220, 20, 60, 0.35); }
  50% { box-shadow: 0 4px 35px rgba(220, 20, 60, 0.55), 0 0 50px rgba(220, 20, 60, 0.15); }
}

@keyframes ctaShimmer {
  0% { left: -100%; }
  50%, 100% { left: 100%; }
}

.hero__scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  animation: bounceDown 2s ease-in-out infinite;
  opacity: 0.6;
  cursor: pointer;
  transition: opacity var(--transition);
}

.hero__scroll-indicator:hover {
  opacity: 1;
}

.hero__scroll-indicator svg {
  width: 32px;
  height: 32px;
  stroke: var(--crimson);
}

@keyframes bounceDown {

  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }

  50% {
    transform: translateX(-50%) translateY(12px);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }

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

/* ========================================
   SECTION BASE
   ======================================== */
.section {
  padding: 5rem 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}

.section__title {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  background: linear-gradient(135deg, var(--crimson), var(--white));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section__subtitle {
  text-align: center;
  color: var(--white-dim);
  font-size: 1rem;
  font-weight: 400;
  margin-bottom: 3rem;
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   COUNTDOWN
   ======================================== */
.countdown {
  padding: 4rem 1.5rem;
  text-align: center;
  background: linear-gradient(180deg, transparent, rgba(139, 0, 0, 0.08), transparent);
}

.countdown__label {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--white-dim);
  text-transform: uppercase;
  letter-spacing: 4px;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

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

.countdown__item {
  background: var(--black-card);
  border: 1px solid rgba(220, 20, 60, 0.2);
  border-radius: var(--radius);
  padding: 1.5rem 1.2rem;
  min-width: 90px;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.countdown__item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--crimson), transparent);
  opacity: 0.6;
}

.countdown__item:hover {
  border-color: rgba(220, 20, 60, 0.5);
  box-shadow: 0 0 30px rgba(220, 20, 60, 0.15);
}

.countdown__number {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 900;
  color: var(--crimson-bright);
  line-height: 1;
  display: block;
  text-shadow: 0 0 20px rgba(220, 20, 60, 0.3);
}

.countdown__unit {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--white-dim);
  margin-top: 0.5rem;
  display: block;
  font-weight: 600;
}

/* ========================================
   PRIZES SECTION
   ======================================== */
.prizes__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.prize-card {
  background: rgba(26, 26, 26, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(220, 20, 60, 0.15);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.prize-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(220, 20, 60, 0.08), transparent 70%);
  opacity: 0;
  transition: opacity var(--transition);
}

.prize-card:hover {
  transform: translateY(-8px);
  border-color: rgba(220, 20, 60, 0.4);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 40px rgba(220, 20, 60, 0.1);
}

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

.prize-card__icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  display: block;
  filter: drop-shadow(0 0 10px rgba(220, 20, 60, 0.3));
}

.prize-card__title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--white);
}

.prize-card__desc {
  font-size: 0.9rem;
  color: var(--white-dim);
  line-height: 1.6;
}

/* ========================================
   REGISTRATION FORM
   ======================================== */
.register {
  background: linear-gradient(180deg, transparent, rgba(139, 0, 0, 0.06), transparent);
}

.register__form-wrapper {
  max-width: 520px;
  margin: 0 auto;
  background: rgba(26, 26, 26, 0.6);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(220, 20, 60, 0.15);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  position: relative;
  overflow: hidden;
}

.register__form-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--dark-red), var(--crimson), var(--dark-red));
}

.form__group {
  margin-bottom: 1.5rem;
  position: relative;
}

.form__label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--white-dim);
  margin-bottom: 0.5rem;
}

.form__input {
  width: 100%;
  padding: 0.9rem 1.2rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-size: 1rem;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.form__input::placeholder {
  color: rgba(255, 255, 255, 0.25);
}

.form__input:focus {
  border-color: var(--crimson);
  background: rgba(220, 20, 60, 0.05);
  box-shadow: 0 0 0 3px rgba(220, 20, 60, 0.15), 0 0 20px rgba(220, 20, 60, 0.1);
}

.form__input:hover:not(:focus) {
  border-color: rgba(255, 255, 255, 0.2);
}

/* RUT validation status */
.form__rut-status {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  min-height: 1.2em;
  transition: color var(--transition);
}

.form__rut-status--valid {
  color: #00c850;
}

.form__rut-status--invalid {
  color: var(--crimson);
}

/* CTA Button */
.btn-cta {
  width: 100%;
  padding: 1rem 2rem;
  background: linear-gradient(135deg, var(--dark-red), var(--crimson));
  color: var(--white);
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 3px;
  border-radius: var(--radius-sm);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.btn-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--crimson), var(--crimson-bright));
  opacity: 0;
  transition: opacity var(--transition);
}

.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(220, 20, 60, 0.4), 0 0 60px rgba(220, 20, 60, 0.2);
}

.btn-cta:hover::before {
  opacity: 1;
}

.btn-cta:active {
  transform: translateY(0) scale(0.98);
}

.btn-cta span {
  position: relative;
  z-index: 1;
}

/* Ripple effect */
.btn-ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: scale(0);
  animation: rippleAnim 0.6s ease-out;
  pointer-events: none;
}

@keyframes rippleAnim {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* Form feedback */
.form__feedback {
  margin-top: 1.5rem;
  padding: 1rem 1.2rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  text-align: center;
  display: none;
  animation: feedbackIn 0.4s ease;
}

.form__feedback--success {
  display: block;
  background: rgba(0, 200, 80, 0.1);
  border: 1px solid rgba(0, 200, 80, 0.3);
  color: #00c850;
}

.form__feedback--error {
  display: block;
  background: rgba(220, 20, 60, 0.1);
  border: 1px solid rgba(220, 20, 60, 0.3);
  color: var(--crimson);
}

@keyframes feedbackIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

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

/* Loading state */
.btn-cta.loading {
  pointer-events: none;
  opacity: 0.7;
}

.btn-cta.loading span {
  visibility: hidden;
}

.btn-cta.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 24px;
  height: 24px;
  margin: -12px 0 0 -12px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spinner 0.6s linear infinite;
  z-index: 2;
}

@keyframes spinner {
  to {
    transform: rotate(360deg);
  }
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  padding: 3rem 1.5rem;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer__brand {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--crimson);
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.footer__copy {
  font-size: 0.8rem;
  color: var(--white-dim);
}

/* ========================================
   DIVIDER
   ======================================== */
.divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--dark-red), var(--crimson));
  margin: 0 auto 2.5rem;
  border-radius: 2px;
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
  .section {
    padding: 3.5rem 1.2rem;
  }

  .countdown__grid {
    gap: 0.75rem;
  }

  .countdown__item {
    min-width: 72px;
    padding: 1.2rem 0.8rem;
  }

  .prizes__grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .register__form-wrapper {
    padding: 2rem 1.5rem;
  }

  .hero__logo {
    width: 85vw;
  }
}

@media (max-width: 480px) {
  .hero__tagline {
    letter-spacing: 1px;
  }

  .countdown__item {
    min-width: 65px;
    padding: 1rem 0.6rem;
  }

  .countdown__number {
    font-size: 2rem;
  }

  .register__form-wrapper {
    padding: 1.5rem 1.2rem;
    margin: 0 0.5rem;
  }
}

/* ========================================
   SCROLLBAR
   ======================================== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--black);
}

::-webkit-scrollbar-thumb {
  background: var(--dark-red);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--crimson);
}

/* ========================================
   SELECTION
   ======================================== */
::selection {
  background: rgba(220, 20, 60, 0.3);
  color: var(--white);
}