/* =========================================================================
   Cascais Summit — Design System
   -------------------------------------------------------------------------
   Paleta e tipografia aproximadas a partir do mockup fornecido
   (Maquete_CascaisSummit.pdf). São valores de arranque para permitir o
   desenvolvimento imediato — a AECC deverá fornecer os valores de marca
   definitivos (hex exatos, ficheiros de fonte, logótipo vetorial) para
   substituição direta das variáveis abaixo, sem tocar no resto do CSS.
   ========================================================================= */

:root {
  /* --- Cor de marca (aproximada do mockup: gradiente de pontos teal -> laranja) --- */
  --cs-teal: #1b9c93;
  --cs-teal-dark: #157e77;
  --cs-green: #6fa05c;
  --cs-olive: #b79355;
  --cs-orange: #e8863c;
  --cs-orange-dark: #d9622e;

  --cs-ink: #1a1d1e;
  --cs-ink-soft: #4a4f52;
  --cs-paper: #ffffff;
  --cs-paper-soft: #f7f6f3;
  --cs-border: #e6e3dc;

  --cs-success: #2f8f5b;
  --cs-danger: #c0392b;
  --cs-pending: #b7862f;

  /* --- Tipografia (placeholders — substituir por fontes oficiais da AECC via @font-face) --- */
  --cs-font-display: "Poppins", "Segoe UI", "Trebuchet MS", Verdana, sans-serif;
  --cs-font-body: "Inter", "Segoe UI", Roboto, Arial, sans-serif;

  --cs-radius: 14px;
  --cs-radius-sm: 8px;
  --cs-shadow: 0 8px 24px rgba(26, 29, 30, 0.08);
  --cs-shadow-lg: 0 16px 40px rgba(26, 29, 30, 0.14);

  --cs-gradient-brand: linear-gradient(120deg, var(--cs-teal) 0%, var(--cs-green) 35%, var(--cs-olive) 60%, var(--cs-orange) 80%, var(--cs-orange-dark) 100%);
  --cs-gradient-cta: linear-gradient(120deg, var(--cs-orange) 0%, var(--cs-orange-dark) 100%);
}

/* --- Reset leve ------------------------------------------------------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--cs-font-body);
  color: var(--cs-ink);
  background: var(--cs-paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--cs-teal-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 {
  font-family: var(--cs-font-display);
  font-weight: 700;
  line-height: 1.15;
  color: var(--cs-ink);
  margin: 0 0 .5em;
}
h1 { font-size: clamp(2rem, 4.5vw, 3.25rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }
p { margin: 0 0 1em; }

.container-cs {
  width: 100%;
  max-width: 1160px;
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.section { padding: clamp(2.5rem, 6vw, 5rem) 0; }
.section-soft { background: var(--cs-paper-soft); }
.section-title { text-align: center; margin-bottom: 2.5rem; }
.section-title .eyebrow {
  display: inline-block;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: .8rem;
  color: var(--cs-teal-dark);
  margin-bottom: .5rem;
}

/* --- Botões ------------------------------------------------------------ */
.btn-cs {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  font-family: var(--cs-font-display);
  font-weight: 600;
  font-size: 1rem;
  padding: .85rem 1.75rem;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  text-align: center;
  max-width: 100%;
  white-space: normal;
}
.btn-cs:hover { text-decoration: none; transform: translateY(-2px); }
.btn-cs:active { transform: translateY(0); }

.btn-cs-primary {
  background: var(--cs-gradient-cta);
  color: #fff;
  box-shadow: 0 10px 24px rgba(217, 98, 46, .35);
}
.btn-cs-primary:hover { box-shadow: 0 14px 30px rgba(217, 98, 46, .45); color: #fff; }

.btn-cs-outline {
  background: transparent;
  border-color: var(--cs-paper);
  color: var(--cs-paper);
}
.btn-cs-outline:hover { background: rgba(255,255,255,.12); color: var(--cs-paper); }

.btn-cs-outline-dark {
  background: transparent;
  border-color: var(--cs-ink);
  color: var(--cs-ink);
}
.btn-cs-outline-dark:hover { background: var(--cs-ink); color: #fff; }

.btn-cs-block { width: 100%; }
.btn-cs-lg { padding: 1.05rem 2.25rem; font-size: 1.1rem; }

/* --- Header / navegação ------------------------------------------------ */
.cs-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--cs-border);
}
.cs-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .75rem 0;
}
.cs-logo {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--cs-font-display);
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--cs-ink);
}
.cs-logo .dot-cluster { display: inline-flex; gap: 2px; }
.cs-logo .dot-cluster span {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--cs-gradient-brand);
}
.cs-logo strong { color: var(--cs-teal); }

.cs-nav { display: none; }
.cs-nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  align-items: center;
}
.cs-nav a {
  color: var(--cs-ink-soft);
  font-weight: 600;
  font-size: .95rem;
}
.cs-nav a.active, .cs-nav a:hover { color: var(--cs-teal-dark); text-decoration: none; }

.cs-header-cta { display: none; }

/* Checkbox escondido que controla o menu mobile — ver comentário em NavMenu.razor.
   Continua acessível por teclado/leitor de ecrã através da <label for="cs-nav-toggle">. */
.cs-nav-toggle-input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  pointer-events: none;
}

.cs-nav-toggle {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--cs-border);
  background: #fff;
  border-radius: var(--cs-radius-sm);
  padding: .5rem .65rem;
  cursor: pointer;
  flex-shrink: 0;
}
.cs-nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--cs-ink);
  margin: 4px 0;
  transition: transform .2s ease, opacity .2s ease;
}
/* Anima o hamburger para "X" quando o menu está aberto. */
.cs-nav-toggle-input:checked ~ .container-cs .cs-nav-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.cs-nav-toggle-input:checked ~ .container-cs .cs-nav-toggle span:nth-child(2) { opacity: 0; }
.cs-nav-toggle-input:checked ~ .container-cs .cs-nav-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.cs-mobile-menu {
  display: none;
  flex-direction: column;
  padding: 1rem 1.25rem 1.5rem;
  border-top: 1px solid var(--cs-border);
  background: #fff;
}
.cs-nav-toggle-input:checked ~ .cs-mobile-menu { display: flex; }
.cs-mobile-menu a {
  padding: .65rem 0;
  font-weight: 600;
  color: var(--cs-ink);
  border-bottom: 1px solid var(--cs-border);
}
.cs-mobile-menu .btn-cs { margin-top: 1rem; }

@media (min-width: 992px) {
  .cs-nav { display: block; }
  .cs-header-cta { display: inline-flex; }
  .cs-nav-toggle { display: none; }
  .cs-mobile-menu { display: none !important; }
}

/* --- Hero ---------------------------------------------------------------*/
.cs-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, #0f2d2b 0%, #123c38 45%, #1b9c93 100%);
  color: #fff;
  padding: clamp(3rem, 8vw, 6rem) 0 clamp(3.5rem, 9vw, 7rem);
}
.cs-hero-dots {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(232,134,60,.55) 0 6px, transparent 7px),
    radial-gradient(circle, rgba(183,147,85,.45) 0 4px, transparent 5px),
    radial-gradient(circle, rgba(111,160,92,.4) 0 5px, transparent 6px);
  background-size: 140px 140px, 90px 90px, 110px 110px;
  background-position: 90% 10%, 80% 60%, 95% 85%;
  background-repeat: no-repeat;
  opacity: .9;
  pointer-events: none;
}
.cs-hero-inner { position: relative; z-index: 1; max-width: 720px; }
.cs-hero .eyebrow {
  display: inline-block;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  font-size: .8rem;
  color: #ffe0c2;
  margin-bottom: 1rem;
}
.cs-hero h1 { color: #fff; }
.cs-hero .lede { font-size: 1.15rem; color: rgba(255,255,255,.88); max-width: 620px; }
.cs-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin: 1.75rem 0;
}
.cs-hero-meta .chip {
  display: flex;
  align-items: center;
  gap: .5rem;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 999px;
  padding: .5rem 1rem;
  font-weight: 600;
  font-size: .92rem;
}
.cs-hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 1.5rem; }
@media (max-width: 560px) {
  /* Em ecrãs muito estreitos, botões lado-a-lado com texto longo ficam apertados —
     empilha-os a toda a largura em vez de forçar tudo numa linha. */
  .cs-hero-actions { flex-direction: column; align-items: stretch; }
  .cs-hero-actions .btn-cs { width: 100%; }
}

/* --- Placeholder badge --------------------------------------------------*/
.cs-placeholder {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--cs-pending);
  background: #fdf1de;
  border: 1px solid #f0dbb2;
  border-radius: 999px;
  padding: .15rem .55rem;
  margin-left: .4rem;
  vertical-align: middle;
}
.cs-placeholder-block {
  background: #fdf6ea;
  border: 1px dashed #e3c689;
  border-radius: var(--cs-radius-sm);
  padding: .9rem 1.1rem;
  font-size: .92rem;
  color: #7a5a1e;
}

/* --- Cards genéricos ------------------------------------------------------*/
.cs-card {
  background: #fff;
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius);
  padding: 1.5rem;
  box-shadow: var(--cs-shadow);
  height: 100%;
}
.cs-grid { display: grid; gap: 1.5rem; }
.cs-grid-2 { grid-template-columns: repeat(1, 1fr); }
.cs-grid-3 { grid-template-columns: repeat(1, 1fr); }
.cs-grid-4 { grid-template-columns: repeat(1, 1fr); }
@media (min-width: 640px) {
  .cs-grid-2 { grid-template-columns: repeat(2, 1fr); }
  .cs-grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .cs-grid-3 { grid-template-columns: repeat(3, 1fr); }
  .cs-grid-4 { grid-template-columns: repeat(4, 1fr); }
}

.cs-icon-badge {
  width: 46px; height: 46px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: var(--cs-gradient-brand);
  color: #fff;
  font-weight: 800;
  margin-bottom: .75rem;
}

/* --- Oradores ------------------------------------------------------------*/
.speaker-photo {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: var(--cs-radius);
  background: var(--cs-paper-soft);
  border: 1px solid var(--cs-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cs-ink-soft);
  font-family: var(--cs-font-display);
  font-weight: 700;
  font-size: 2rem;
  margin-bottom: 1rem;
  overflow: hidden;
}
.speaker-photo img { width: 100%; height: 100%; object-fit: cover; }

/* --- Programa / timeline ---------------------------------------------- */
.timeline { display: flex; flex-direction: column; gap: 1rem; }
.timeline-item {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 1rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius-sm);
  background: #fff;
}
.timeline-item.is-break { background: var(--cs-paper-soft); border-style: dashed; }
.timeline-time {
  font-family: var(--cs-font-display);
  font-weight: 700;
  color: var(--cs-teal-dark);
  font-size: .95rem;
  white-space: nowrap;
}
.timeline-tag {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--cs-orange-dark);
  margin-bottom: .25rem;
}

/* --- Formulário de inscrição -------------------------------------------*/
.cs-form-card {
  background: #fff;
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius);
  box-shadow: var(--cs-shadow-lg);
  padding: clamp(1.25rem, 4vw, 2.5rem);
}
.cs-field { margin-bottom: 1.15rem; }
.cs-field label {
  display: block;
  font-weight: 600;
  font-size: .9rem;
  margin-bottom: .35rem;
  color: var(--cs-ink);
}
.cs-field .required-mark { color: var(--cs-orange-dark); }
.cs-field .form-control,
.cs-field .form-select,
.cs-field textarea.form-control {
  border-radius: var(--cs-radius-sm);
  border: 1px solid var(--cs-border);
  padding: .65rem .85rem;
  font-size: .97rem;
}
.cs-field .form-control:focus,
.cs-field .form-select:focus {
  border-color: var(--cs-teal);
  box-shadow: 0 0 0 3px rgba(27,156,147,.15);
}
.cs-field .validation-message {
  color: var(--cs-danger);
  font-size: .82rem;
  margin-top: .25rem;
  display: block;
}
.cs-check { display: flex; align-items: flex-start; gap: .6rem; margin-bottom: .85rem; }
.cs-check input { margin-top: .3rem; }
.cs-check label { font-size: .9rem; font-weight: 500; }

.cs-honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* --- Sticky CTA mobile ---------------------------------------------------*/
.cs-sticky-cta {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 999;
  padding: .75rem 1rem calc(.75rem + env(safe-area-inset-bottom));
  background: #fff;
  border-top: 1px solid var(--cs-border);
  box-shadow: 0 -8px 24px rgba(0,0,0,.08);
}
@media (min-width: 992px) { .cs-sticky-cta { display: none; } }

/* --- Footer --------------------------------------------------------------*/
.cs-footer {
  background: var(--cs-ink);
  color: rgba(255,255,255,.75);
  padding: 3rem 0 2rem;
}
.cs-footer h4 { color: #fff; font-size: 1rem; }
.cs-footer a { color: rgba(255,255,255,.75); }
.cs-footer a:hover { color: #fff; }
.cs-footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
  margin-bottom: 2rem;
}
@media (min-width: 768px) { .cs-footer-grid { grid-template-columns: 2fr 1fr 1fr; } }
.cs-footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding-top: 1.5rem;
  font-size: .85rem;
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1.5rem;
  justify-content: space-between;
}
.cs-social { display: flex; gap: .75rem; }
.cs-social a {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.25);
  display: flex; align-items: center; justify-content: center;
}

/* --- Utilitários ----------------------------------------------------------*/
.text-teal { color: var(--cs-teal); }
.text-orange { color: var(--cs-orange-dark); }
.bg-brand-gradient { background: var(--cs-gradient-brand); }
.mt-0 { margin-top: 0 !important; }

.status-badge {
  display: inline-flex; align-items: center; gap: .35rem;
  font-size: .78rem; font-weight: 700;
  padding: .25rem .65rem; border-radius: 999px;
}
.status-badge.pendente { background: #fdf1de; color: var(--cs-pending); }
.status-badge.confirmada { background: #e3f4ea; color: var(--cs-success); }
.status-badge.cancelada { background: #fbe6e3; color: var(--cs-danger); }

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--cs-ink); color: #fff; padding: .6rem 1rem;
  z-index: 2000; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }