/* ============================================
   RSVP Site · Style.css
   Tema: Formatura Eng. Computação · Chácara
   Paleta: Navy #17234d · Branco · Preto
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Great+Vibes&family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400;1,600&family=Inter:wght@300;400;500;600;700&display=swap');

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

:root {
  --navy:        #17234d;
  --navy-light:  #1e2e63;
  --navy-dark:   #0e1630;
  --white:       #ffffff;
  --white-90:    rgba(255,255,255,0.90);
  --white-70:    rgba(255,255,255,0.70);
  --white-40:    rgba(255,255,255,0.40);
  --white-15:    rgba(255,255,255,0.15);
  --white-08:    rgba(255,255,255,0.08);
  --accent:      #c8d8ff;       /* azul-gelo suave */
  --accent-glow: rgba(200,216,255,0.25);
  --glass-bg:    rgba(255,255,255,0.07);
  --glass-border:rgba(255,255,255,0.18);
  --shadow:      0 30px 60px rgba(0,0,0,0.55);
  --radius:      20px;
  --transition:  0.35s cubic-bezier(0.4,0,0.2,1);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--navy);
  color: var(--white-90);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Hero / Background ─────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem 4rem;
}

.hero::before {
  content: '';
  position: fixed;
  inset: 0;
  background: url('hero.png') center / cover no-repeat;
  z-index: 0;
}

.hero::after {
  content: '';
  position: fixed;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(23, 35, 77, 0.75) 0%,
    rgba(14, 22, 48, 0.82) 50%,
    rgba(10, 15, 35, 0.90) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 540px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

/* ── Floating Particles ────────────────────── */
.particles {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.particle {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.9), transparent);
  opacity: 0;
  animation: float-up linear infinite;
}

@keyframes float-up {
  0%   { transform: translateY(100vh) scale(0); opacity: 0; }
  10%  { opacity: 0.6; }
  90%  { opacity: 0.1; }
  100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}

/* ── Event Header ──────────────────────────── */
.event-header {
  text-align: center;
  animation: fade-down 0.8s ease both;
}

.event-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(200,216,255,0.45);
  border-radius: 999px;
  padding: 0.35rem 1.1rem;
  margin-bottom: 1.4rem;
  backdrop-filter: blur(8px);
  background: rgba(200,216,255,0.08);
}

.event-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.2rem, 7vw, 3.5rem);
  font-weight: 700;
  line-height: 1.12;
  color: var(--white);
  text-shadow: 0 4px 30px rgba(0,0,0,0.6);
  margin-bottom: 0.5rem;
}

.event-title em {
  font-style: italic;
  color: var(--accent);
}

.event-subtitle {
  font-size: 0.9rem;
  color: var(--white-70);
  letter-spacing: 0.04em;
  margin-bottom: 1rem;
}

.divider {
  width: 70px;
  height: 1.5px;
  background: linear-gradient(90deg, transparent, var(--white-40), transparent);
  margin: 1rem auto;
}

.event-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem 1.5rem;
  margin-top: 0.25rem;
}

.event-meta-item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.875rem;
  color: var(--white-70);
  font-weight: 500;
}

.event-meta-item svg {
  width: 16px;
  height: 16px;
  stroke: var(--accent);
  flex-shrink: 0;
}

/* ── Glass Card ────────────────────────────── */
.glass-card {
  width: 100%;
  background: var(--glass-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,0.12);
  animation: fade-up 0.9s ease 0.2s both;
}

.card-title {
  font-family: 'Great Vibes', cursive;
  font-size: 2.2rem;
  font-weight: 400;
  text-align: center;
  margin-bottom: 0.4rem;
  color: var(--white);
}

.card-subtitle {
  font-size: 0.85rem;
  text-align: center;
  color: var(--white-70);
  margin-bottom: 2rem;
  line-height: 1.6;
}

/* ── Form Fields ───────────────────────────── */
.form-group {
  margin-bottom: 1.4rem;
}

.form-group label {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 0.85rem 1rem;
  color: var(--white);
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
  appearance: none;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23c8d8ff' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form-group select option {
  background: #17234d;
  color: #fff;
}

.form-group textarea {
  resize: vertical;
  min-height: 90px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255,255,255,0.28);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: rgba(200,216,255,0.7);
  background: rgba(255,255,255,0.10);
  box-shadow: 0 0 0 3px rgba(200,216,255,0.15);
}

/* ── Radio Group ───────────────────────────── */
.radio-group {
  display: flex;
  gap: 0.75rem;
}

.radio-option {
  flex: 1;
  cursor: pointer;
}

.radio-option input[type="radio"] {
  display: none;
}

.radio-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  background: rgba(255,255,255,0.05);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--white-70);
  transition: all var(--transition);
  user-select: none;
}

.radio-option input[type="radio"]:checked + .radio-label {
  background: rgba(200,216,255,0.18);
  border-color: rgba(200,216,255,0.65);
  color: var(--white);
  box-shadow: 0 0 0 3px rgba(200,216,255,0.12);
}

.radio-label:hover {
  border-color: var(--white-40);
  color: var(--white);
  background: rgba(255,255,255,0.09);
}

/* ── Submit Button ─────────────────────────── */
.btn-submit {
  width: 100%;
  padding: 1rem;
  margin-top: 0.5rem;
  background: var(--white);
  border: none;
  border-radius: 14px;
  color: var(--navy);
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(0,0,0,0.35);
}

.btn-submit::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(23,35,77,0.12) 60%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.55s ease;
}

.btn-submit:hover::before { transform: translateX(100%); }

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(0,0,0,0.45);
  background: #f0f4ff;
}

.btn-submit:active { transform: translateY(0); }

.btn-submit:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

.btn-submit .btn-spinner {
  display: none;
  width: 20px;
  height: 20px;
  border: 2.5px solid rgba(23,35,77,0.25);
  border-top-color: var(--navy);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 0 auto;
}

.btn-submit.loading .btn-text { display: none; }
.btn-submit.loading .btn-spinner { display: block; }

/* ── Deadline notice ───────────────────────── */
.deadline-notice {
  text-align: center;
  font-size: 0.78rem;
  color: var(--white-40);
  margin-top: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}

.deadline-notice svg {
  stroke: var(--accent);
  flex-shrink: 0;
}

/* ── Success Screen ────────────────────────── */
.success-screen {
  display: none;
  text-align: center;
  animation: fade-up 0.6s ease both;
  padding: 1rem 0;
}

.success-screen.show { display: block; }

.success-icon {
  width: 84px;
  height: 84px;
  background: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  box-shadow: 0 0 0 14px rgba(255,255,255,0.10), 0 10px 40px rgba(0,0,0,0.35);
  animation: pulse-white 2.5s ease infinite;
}

.success-icon svg {
  width: 42px;
  height: 42px;
  stroke: var(--navy);
  stroke-width: 2.5;
}

.success-title {
  font-family: 'Great Vibes', cursive;
  font-size: 2.8rem;
  font-weight: 400;
  color: var(--white);
  margin-bottom: 0.75rem;
}

.success-message {
  font-size: 0.95rem;
  color: var(--white-70);
  line-height: 1.75;
}

.success-name {
  color: var(--accent);
  font-weight: 700;
}

/* ── Footer ────────────────────────────────── */
.site-footer {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 1.5rem;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.25);
}

/* ── Animations ─────────────────────────────  */
@keyframes fade-down {
  from { opacity: 0; transform: translateY(-20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

@keyframes pulse-white {
  0%, 100% { box-shadow: 0 0 0 14px rgba(255,255,255,0.10), 0 10px 40px rgba(0,0,0,0.35); }
  50%       { box-shadow: 0 0 0 24px rgba(255,255,255,0.04), 0 10px 40px rgba(0,0,0,0.35); }
}

/* ── Companions Section ────────────────────── */
.companions-wrapper {
  margin-bottom: 1.4rem;
}

.companions-heading {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.9rem;
}

.companion-entry {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  padding: 1rem;
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  background: rgba(255,255,255,0.04);
  margin-bottom: 0.75rem;
  animation: fade-up 0.35s ease both;
}

.companion-number {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  background: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--navy);
  margin-top: 0.25rem;
}

.companion-fields {
  flex: 1;
  min-width: 0;
}

.companion-fields .form-group {
  margin-bottom: 0.9rem;
}

.companion-fields .form-group:last-child {
  margin-bottom: 0;
}

/* ── Responsive ─────────────────────────────  */
@media (max-width: 480px) {
  .glass-card { padding: 2rem 1.25rem; }
  .radio-group { flex-direction: column; }
  .event-title { font-size: 2rem; }
}