/* ============================================
   NDA AFFAIR — Cinema Noir Design System
   ============================================ */

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

/* --- Custom Properties --- */
:root {
  --deep-black: #0D0D0D;
  --rich-black: #111111;
  --card-bg: #151515;
  --card-border: rgba(212, 175, 55, 0.15);
  --slate-grey: #8E8E93;
  --light-grey: #B0B0B5;
  --gold: #D4AF37;
  --gold-dim: rgba(212, 175, 55, 0.5);
  --gold-glow: rgba(212, 175, 55, 0.12);
  --gold-intense: #D4AF37;
  --gold-intense-glow: rgba(212, 175, 55, 0.35);
  --white: #F5F5F5;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, sans-serif;

  --section-padding: clamp(4rem, 10vw, 8rem) clamp(1.25rem, 5vw, 6rem);
  --max-width: 1100px;

  --transition-base: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-slow: 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--deep-black);
  color: var(--slate-grey);
  line-height: 1.7;
  font-weight: 300;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

/* --- Typography --- */
h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 400;
  color: var(--white);
  line-height: 1.2;
}

/* --- Utility: Section Wrapper --- */
.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}

/* --- Utility: Gold Divider --- */
.gold-divider {
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  margin: 1.5rem auto;
}

/* --- Utility: Section Label --- */
.section-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1.25rem;
  overflow: hidden;
}

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

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.35) saturate(0.8);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
      rgba(13, 13, 13, 0.4) 0%,
      rgba(13, 13, 13, 0.6) 50%,
      rgba(13, 13, 13, 0.95) 100%);
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 750px;
}

.hero__badge {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.65rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid var(--card-border);
  padding: 0.5rem 1.5rem;
  margin-bottom: 2.5rem;
  backdrop-filter: blur(4px);
  background: rgba(212, 175, 55, 0.04);
}

.hero__title {
  font-size: clamp(2rem, 5.5vw, 3.8rem);
  font-weight: 400;
  color: var(--white);
  letter-spacing: 0.04em;
  margin-bottom: 1.5rem;
}

.hero__title span {
  color: var(--gold);
}

.hero__subtitle {
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  color: var(--slate-grey);
  line-height: 1.8;
  max-width: 580px;
  margin: 0 auto 2.5rem;
  font-weight: 300;
}

/* --- CTA Button --- */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  padding: 1rem 2.5rem;
  border: 1px solid var(--gold);
  color: var(--gold);
  background: transparent;
  cursor: pointer;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
  z-index: -1;
}

.btn:hover {
  color: var(--deep-black);
}

.btn:hover::before {
  transform: scaleX(1);
}

.btn--gold-intense {
  border-color: var(--gold-intense);
  color: var(--slate-grey);
  background: transparent;
  font-weight: 600;
}

.btn--gold-intense::before {
  background: var(--gold-intense);
}

.btn--gold-intense:hover {
  color: var(--deep-black);
  background: var(--gold-intense);
  box-shadow: 0 0 24px var(--gold-intense-glow);
}

/* ============================================
   MANIFESTO
   ============================================ */
.manifesto {
  padding: var(--section-padding);
  text-align: center;
}

.manifesto__title {
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  margin-bottom: 0.5rem;
}

.manifesto__text {
  max-width: 640px;
  margin: 2rem auto 0;
  font-size: clamp(0.95rem, 1.8vw, 1.05rem);
  line-height: 2;
  color: var(--slate-grey);
}

.manifesto__text em {
  color: var(--light-grey);
  font-style: normal;
  font-weight: 400;
}

/* ============================================
   PROTOCOLOS
   ============================================ */
.protocols {
  padding: var(--section-padding);
}

.protocols__header {
  text-align: center;
  margin-bottom: 4rem;
}

.protocols__title {
  font-size: clamp(1.6rem, 4vw, 2.8rem);
}

.protocols__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .protocols__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
}

/* --- Protocol Card --- */
.protocol-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: clamp(2rem, 4vw, 3rem);
  position: relative;
  overflow: hidden;
  transition: var(--transition-base);
}

.protocol-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.protocol-card:hover {
  border-color: var(--gold-dim);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

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

.protocol-card__number {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.protocol-card__name {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.5vw, 1.5rem);
  color: var(--white);
  margin-bottom: 0.75rem;
}

.protocol-card__focus {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold-dim);
  margin-bottom: 1.25rem;
}

.protocol-card__desc {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--slate-grey);
}

/* ============================================
   PILAR NDA (SEGURANÇA)
   ============================================ */
.security {
  padding: var(--section-padding);
  text-align: center;
  border-top: 1px solid rgba(212, 175, 55, 0.08);
  border-bottom: 1px solid rgba(212, 175, 55, 0.08);
}

.security__title {
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  margin-bottom: 0.5rem;
}

.security__pillars {
  margin-top: 3.5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

@media (min-width: 768px) {
  .security__pillars {
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
  }
}

.pillar {
  text-align: center;
}

.pillar__icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--card-border);
  border-radius: 50%;
  color: var(--gold);
}

.pillar__icon svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.pillar__name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--white);
  margin-bottom: 0.75rem;
}

.pillar__text {
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--slate-grey);
  max-width: 320px;
  margin: 0 auto;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: var(--section-padding);
  text-align: center;
}

.footer__title {
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  margin-bottom: 0.5rem;
}

.footer__restriction {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-top: 1.25rem;
  font-weight: 500;
}

/* ============================================
   MULTI-STEP FORM (Typeform-like)
   ============================================ */
.msf {
  position: relative;
  max-width: 600px;
  margin: 3rem auto 0;
  min-height: 320px;
}

.msf__step {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  opacity: 0;
  transform: translateY(30px);
  pointer-events: none;
  transition: opacity 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.msf__step.active {
  position: relative;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.msf__step.exit-up {
  transform: translateY(-30px);
}

.msf__num {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gold);
  margin-bottom: 0.5rem;
  text-align: left;
}

.msf__num span {
  display: inline-block;
  font-weight: 600;
}

.msf__question {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  font-weight: 400;
  color: var(--white);
  text-align: left;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.msf__req {
  color: var(--gold);
  font-size: 0.9em;
}

.msf__helptext {
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: var(--slate-grey);
  text-align: left;
  margin-bottom: 1.5rem;
  line-height: 1.6;
  font-weight: 300;
}

.msf__input {
  display: block;
  width: 100%;
  font-family: var(--font-body);
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  font-weight: 300;
  color: var(--white);
  background: transparent;
  border: none;
  border-bottom: 2px solid var(--card-border);
  padding: 0.75rem 0;
  outline: none;
  transition: border-color 0.4s ease;
  caret-color: var(--gold);
}

.msf__input::placeholder {
  color: rgba(142, 142, 147, 0.35);
  font-weight: 300;
}

.msf__input:focus {
  border-bottom-color: var(--gold);
}

.msf__error {
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: #e74c3c;
  text-align: left;
  margin-top: 0.4rem;
  min-height: 1.2em;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.msf__error.visible {
  opacity: 1;
}

.msf__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1.5rem;
}

.msf__ok {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  padding: 0.65rem 1.4rem;
  background: var(--gold);
  color: var(--deep-black);
  border: none;
  cursor: pointer;
  transition: background 0.3s ease, box-shadow 0.3s ease, transform 0.15s ease;
}

.msf__ok:hover {
  background: #e0be44;
  box-shadow: 0 0 20px var(--gold-intense-glow);
  transform: translateY(-1px);
}

.msf__ok:active {
  transform: translateY(0);
}

.msf__ok span {
  font-size: 0.9em;
}

.msf__submit {
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.75rem 2rem;
}

.msf__enter {
  font-family: var(--font-body);
  font-size: 0.72rem;
  color: rgba(142, 142, 147, 0.45);
  font-weight: 300;
}

.msf__enter strong {
  font-weight: 500;
  color: rgba(142, 142, 147, 0.6);
}

/* Nav Arrows */
.msf__nav {
  position: absolute;
  bottom: -70px;
  right: 0;
  display: flex;
  gap: 2px;
}

.msf__arrow {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  color: var(--slate-grey);
  cursor: pointer;
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.msf__arrow:hover {
  background: var(--gold-glow);
  border-color: var(--gold-dim);
  color: var(--gold);
}

.msf__arrow:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.msf__arrow:disabled:hover {
  background: var(--card-bg);
  border-color: var(--card-border);
  color: var(--slate-grey);
}

/* Success State */
.msf__success .msf__success-icon {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--gold);
  border-radius: 50%;
  font-size: 1.5rem;
  color: var(--gold);
  margin-bottom: 1.5rem;
}

.msf__success .msf__question {
  color: var(--gold);
}

.msf__fail .msf__question {
  color: #e74c3c;
}

.footer__disclaimer {
  margin-top: 5rem;
  font-size: 0.7rem;
  color: rgba(142, 142, 147, 0.5);
  letter-spacing: 0.05em;
}

/* ============================================
   BOTTOM BAR
   ============================================ */
.bottom-bar {
  padding: 1.5rem;
  text-align: center;
  border-top: 1px solid rgba(212, 175, 55, 0.06);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(142, 142, 147, 0.35);
}

/* ============================================
   ANIMATIONS
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

.reveal-delay-1 {
  transition-delay: 0.15s;
}

.reveal-delay-2 {
  transition-delay: 0.3s;
}

.reveal-delay-3 {
  transition-delay: 0.45s;
}

/* Hero-specific entrance */
.hero .reveal {
  transform: translateY(20px);
}

/* ============================================
   RESPONSIVE FINE-TUNING
   ============================================ */
@media (max-width: 480px) {
  .hero__badge {
    font-size: 0.55rem;
    padding: 0.4rem 1rem;
  }

  .hero__title {
    font-size: 2.2rem;
    letter-spacing: 0.02em;
  }

  .btn {
    font-size: 0.6rem;
    padding: 0.9rem 1.8rem;
    letter-spacing: 0.2em;
  }

  .protocol-card {
    padding: 1.75rem;
  }
}