/* Base */
:root {
  --navy: #0A1628;
  --cream: #F5F0E8;
  --amber: #FF9F1C;
  --amber-dim: rgba(255, 159, 28, 0.12);
  --text: #E8E0D4;
  --text-muted: #8A8378;
  --card-bg: #0F1F35;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'DM Sans', system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--navy);
  color: var(--text);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Nav */
.nav {
  padding: 1.5rem 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1100px;
  margin: 0 auto;
}
.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--cream);
  letter-spacing: -0.01em;
}
.nav-tagline {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Hero */
.hero {
  padding: 5rem 3rem 4rem;
  max-width: 1100px;
  margin: 0 auto;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.hero-eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 1.2rem;
  font-weight: 500;
}
.hero-headline {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 5vw, 4rem);
  font-weight: 700;
  color: var(--cream);
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}
.hero-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 440px;
  line-height: 1.7;
}

/* Brief card */
.brief-card {
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  padding: 1.5rem;
  font-size: 0.82rem;
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
}
.hero-card {
  transform: perspective(800px) rotateY(-4deg) rotateX(2deg);
}
.brief-card-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.8rem;
}
.brief-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--amber);
}
.brief-dot.active { box-shadow: 0 0 8px var(--amber); }
.brief-date {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}
.brief-card-label {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--cream);
  font-weight: 600;
  margin-bottom: 1.2rem;
}
.brief-priority-label {
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 0.5rem;
  font-weight: 500;
}
.brief-item {
  padding: 0.6rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.brief-from {
  display: block;
  font-weight: 600;
  color: var(--cream);
  margin-bottom: 0.15rem;
}
.brief-subject {
  color: var(--text-muted);
  font-size: 0.78rem;
}
.brief-meeting {
  padding: 0.7rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.brief-meeting-time {
  font-size: 0.72rem;
  color: var(--amber);
  font-weight: 600;
  margin-bottom: 0.2rem;
}
.brief-meeting-info {
  font-size: 0.78rem;
  color: var(--text-muted);
}
.brief-action {
  padding: 0.7rem 0;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}
.brief-action-tag {
  background: rgba(255, 159, 28, 0.15);
  color: var(--amber);
  font-size: 0.62rem;
  font-weight: 600;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  letter-spacing: 0.06em;
  white-space: nowrap;
  margin-top: 0.05rem;
}
.brief-action-text {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Preview section */
.preview-section {
  background: var(--cream);
  color: var(--navy);
  padding: 5rem 3rem;
}
.preview-inner {
  max-width: 1100px;
  margin: 0 auto;
}
.preview-label {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #9A8F82;
  margin-bottom: 0.8rem;
  font-weight: 500;
}
.preview-headline {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1rem;
  color: var(--navy);
}
.preview-body {
  font-size: 1rem;
  color: #6B6259;
  max-width: 500px;
  line-height: 1.7;
  margin-bottom: 3rem;
}
.preview-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}
.preview-col {}
.preview-col-icon {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--amber);
  margin-bottom: 0.8rem;
  line-height: 1;
}
.preview-col h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 0.5rem;
}
.preview-col p {
  font-size: 0.9rem;
  color: #6B6259;
  line-height: 1.65;
}

/* How it works */
.how-section {
  background: var(--navy);
  padding: 5rem 3rem;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.how-inner {
  max-width: 1100px;
  margin: 0 auto;
}
.how-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.how-item {
  padding: 1.5rem;
  background: rgba(255,255,255,0.03);
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.06);
}
.how-number {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--amber);
  opacity: 0.4;
  margin-bottom: 0.8rem;
}
.how-item h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--cream);
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.how-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* Manifesto */
.manifesto {
  padding: 5rem 3rem;
  background: var(--navy);
  border-top: 1px solid rgba(255,255,255,0.05);
}
.manifesto-inner {
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
}
.manifesto-rule {
  width: 40px;
  height: 1px;
  background: rgba(255,255,255,0.15);
  margin: 0 auto 2.5rem;
}
.manifesto-quote {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2.5vw, 1.7rem);
  font-style: italic;
  color: var(--cream);
  line-height: 1.5;
  margin-bottom: 2.5rem;
}
.manifesto-body {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 560px;
  margin: 0 auto;
}

/* Signup CTA */
.signup-section {
  padding: 5rem 3rem;
  background: #0d1f30;
  border-top: 1px solid rgba(255,255,255,0.06);
  text-align: center;
}
.signup-inner { max-width: 580px; margin: 0 auto; }
.signup-rule { width: 40px; height: 1px; background: var(--amber); margin: 0 auto 2rem; opacity: 0.5; }
.signup-headline {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--cream);
  margin-bottom: 0.8rem;
  line-height: 1.2;
}
.signup-sub { font-size: 0.95rem; color: var(--text-muted); margin-bottom: 2.5rem; line-height: 1.6; }
.signup-form { display: flex; gap: 0.75rem; max-width: 460px; margin: 0 auto; }
.signup-input {
  flex: 1;
  padding: 0.75rem 1.2rem;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  background: rgba(255,255,255,0.05);
  color: var(--cream);
  font-size: 0.95rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color 0.2s;
}
.signup-input::placeholder { color: var(--text-muted); }
.signup-input:focus { border-color: var(--amber); }
.signup-btn {
  padding: 0.75rem 1.5rem;
  background: var(--amber);
  color: var(--navy);
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  white-space: nowrap;
  transition: opacity 0.2s;
}
.signup-btn:hover { opacity: 0.85; }
.signup-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.signup-msg { margin-top: 1rem; font-size: 0.9rem; line-height: 1.5; max-width: 460px; margin-left: auto; margin-right: auto; }
.signup-msg--ok { color: #4ecdc4; }
.signup-msg--err { color: #e94560; }

/* Footer */
.footer {
  padding: 2rem 3rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1100px;
  margin: 0 auto;
}
.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--cream);
}
.footer-copy {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Beta section */
.beta-section {
  background: var(--navy);
  padding: 3rem 3rem;
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  text-align: center;
}
.beta-inner { max-width: 1100px; margin: 0 auto; }
.beta-label {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
  font-weight: 500;
  margin-bottom: 0.5rem;
}
.beta-sub {
  font-size: 1rem;
  color: var(--text-muted);
}

/* Pourquoi Brief section */
.pourquoi-section {
  background: var(--cream);
  padding: 5rem 3rem;
}
.pourquoi-inner {
  max-width: 1100px;
  margin: 0 auto;
}
.pourquoi-headline {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 3rem;
  line-height: 1.2;
}
.pourquoi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}
.pourquoi-item {
  border-left: 2px solid var(--amber);
  padding-left: 1.5rem;
}
.pourquoi-item h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}
.pourquoi-item p {
  font-size: 0.9rem;
  color: #6B6259;
  line-height: 1.65;
}

/* How-it-works intro */
.how-intro-headline {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 700;
  color: var(--cream);
  margin-bottom: 0.75rem;
  line-height: 1.2;
}
.how-intro-body {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 3rem;
  line-height: 1.7;
}

/* Security section */
.sec-section {
  background: var(--cream);
  color: var(--navy);
  padding: 5rem 3rem;
  border-top: 1px solid rgba(0,0,0,0.06);
}
.sec-inner { max-width: 1100px; margin: 0 auto; }
.sec-rule { width: 40px; height: 1px; background: var(--amber); margin-bottom: 2rem; opacity: 0.5; }
.sec-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #9A8F82;
  margin-bottom: 0.8rem;
  font-weight: 500;
}
.sec-headline {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 1rem;
  line-height: 1.2;
}
.sec-sub {
  font-size: 1rem;
  color: #6B6259;
  max-width: 580px;
  line-height: 1.7;
  margin-bottom: 3rem;
}
.sec-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}
.sec-col { display: flex; flex-direction: column; gap: 1.5rem; }
.sec-card {
  background: #fff;
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 10px;
  padding: 1.5rem;
}
.sec-card-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 0.75rem;
}
.sec-card-body {
  font-size: 0.88rem;
  color: #4a453f;
  line-height: 1.65;
}
.sec-card-body--muted {
  color: #9A8F82;
  font-size: 0.82rem;
  margin-top: 0.5rem;
  border-top: 1px solid rgba(0,0,0,0.06);
  padding-top: 0.5rem;
}
.sec-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.sec-list li {
  font-size: 0.88rem;
  color: #4a453f;
  line-height: 1.5;
  padding-left: 1.2rem;
  position: relative;
}
.sec-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--amber);
}
.sec-list--checks li::before { content: '✗'; color: #c0392b; }
.sec-link { color: var(--amber); text-decoration: none; border-bottom: 1px solid rgba(255,159,28,0.3); }
.sec-link:hover { border-bottom-color: var(--amber); }
.sec-cta { text-align: center; }
.sec-cta-link {
  display: inline-block;
  padding: 0.8rem 2rem;
  background: var(--navy);
  color: var(--cream);
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: opacity 0.2s;
}
.sec-cta-link:hover { opacity: 0.8; color: var(--cream); }

/* FAQ accordion */
.faq-section {
  background: var(--cream);
  color: var(--navy);
  padding: 5rem 3rem;
  border-top: 1px solid rgba(0,0,0,0.06);
}
.faq-inner {
  max-width: 720px;
  margin: 0 auto;
}
.faq-rule {
  width: 40px;
  height: 1px;
  background: var(--amber);
  margin-bottom: 2rem;
  opacity: 0.5;
}
.faq-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #9A8F82;
  margin-bottom: 0.8rem;
  font-weight: 500;
}
.faq-headline {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 2.5rem;
  line-height: 1.2;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.faq-item {
  border-top: 1px solid rgba(0,0,0,0.08);
}
.faq-item:last-child {
  border-bottom: 1px solid rgba(0,0,0,0.08);
}
.faq-question {
  list-style: none;
  cursor: pointer;
  padding: 1.2rem 2rem 1.2rem 0;
  font-weight: 600;
  font-size: 0.97rem;
  color: var(--navy);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  user-select: none;
  line-height: 1.4;
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question::marker { display: none; }
.faq-question::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--amber);
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  transition: transform 0.2s;
  line-height: 1;
}
details[open] > .faq-question::after {
  content: '−';
}
.faq-answer {
  padding: 0 0 1.25rem 0;
}
.faq-answer p {
  font-size: 0.9rem;
  color: #4a453f;
  line-height: 1.7;
}
.faq-link {
  color: var(--navy);
  border-bottom: 1px solid rgba(10,22,40,0.3);
  text-decoration: none;
}
.faq-link:hover { border-bottom-color: var(--navy); }

/* Responsive */
@media (max-width: 768px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-card { transform: none; }
  .pourquoi-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .how-grid { grid-template-columns: 1fr; gap: 1rem; }
  .hero { padding: 3rem 1.5rem 2.5rem; }
  .beta-section { padding: 2.5rem 1.5rem; }
  .pourquoi-section { padding: 3.5rem 1.5rem; }
  .how-section { padding: 3.5rem 1.5rem; }
  .manifesto { padding: 3.5rem 1.5rem; }
  .sec-section { padding: 3.5rem 1.5rem; }
  .sec-grid { grid-template-columns: 1fr; }
  .faq-section { padding: 3.5rem 1.5rem; }
  .nav { padding: 1rem 1.5rem; }
  .footer { padding: 1.5rem; }
}