/* ═══════════════════════════════════════════════════════════
   PLATFORM.CSS — Base compartilhada de todas as páginas
   Navbar · Footer · Tokens · Utils
   Método Pré-Vestibular
═══════════════════════════════════════════════════════════ */

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

/* ── TOKENS ── */
:root {
  /* brand */
  --navy:    #04043A;
  --navy2:   #07075A;
  --red:     #E8181C;
  --rd:      #B00E12;
  --amber:   #F59E0B;
  --lime:    #84CC16;
  --sky:     #0EA5E9;
  --violet:  #8B5CF6;
  --teal:    #14B8A6;
  --rose:    #F43F5E;
  --orange:  #F97316;
  --white:   #FFFFFF;
  --off:     #F6F5F2;
  --g1:      #ECEAE5;
  --g2:      #9CA3AF;
  --g3:      #4B5563;

  /* dark surface (platform pages) */
  --dark:    #060618;
  --dark2:   #0D0D2E;
  --dark3:   #11112A;
  --dark-border: rgba(255,255,255,.08);
  --dark-card:   rgba(255,255,255,.04);
  --dark-text:   rgba(255,255,255,.65);

  /* light surface */
  --light:         #F7F6F3;
  --light2:        #EDECEA;
  --light-border:  rgba(0,0,0,.09);
  --light-card:    #FFFFFF;
  --light-text:    #1A1A2E;
  --light-muted:   #6B7280;

  /* type */
  --syne:  'Syne', sans-serif;
  --serif: 'Instrument Serif', Georgia, serif;
  --dm:    'DM Sans', system-ui, sans-serif;

  /* radii */
  --r-sm: .6rem;
  --r-md: 1rem;
  --r-lg: 1.5rem;
  --r-xl: 2rem;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--dm);
  color: var(--navy);
  background: var(--white);
  overflow-x: hidden;
  line-height: 1.6;
}
img  { display: block; max-width: 100%; }
a    { text-decoration: none; }
ul   { list-style: none; }

.container { max-width: 1240px; margin: 0 auto; padding: 0 1.75rem; }

/* ══════════════════════════════════════
   PLATFORM NAV — light version
══════════════════════════════════════ */
.platform-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: 68px;
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--light-border);
  display: flex;
  align-items: center;
  box-shadow: 0 1px 12px rgba(0,0,0,.06);
}

.platform-nav .nav-inner {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* ── Logo ── */
.platform-nav .nav-logo {
  display: flex;
  align-items: center;
  gap: .65rem;
  flex-shrink: 0;
}
.platform-nav .nav-logo img {
  height: 28px; width: 28px;
}
.platform-nav .nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.platform-nav .nav-logo-name {
  font-family: var(--dm);
  font-weight: 800;
  font-size: .95rem;
  color: var(--navy);
}
.platform-nav .nav-logo-sub {
  font-size: .62rem;
  color: var(--light-muted);
  font-weight: 500;
  letter-spacing: .04em;
}

/* ── Divider ── */
.platform-nav .nav-divider {
  width: 1px;
  height: 28px;
  background: var(--light-border);
  flex-shrink: 0;
  margin: 0 .5rem;
}

/* ── Links ── */
.platform-nav .nav-links {
  display: none;
  align-items: center;
  gap: .15rem;
  flex: 1;
}
@media(min-width:768px) {
  .platform-nav .nav-links { display: flex; }
}

.platform-nav .nav-link {
  display: flex;
  align-items: center;
  gap: .45rem;
  padding: .48rem .8rem;
  border-radius: var(--r-sm);
  font-family: var(--dm);
  font-size: .8rem;
  font-weight: 600;
  color: var(--light-muted);
  transition: all .2s;
  white-space: nowrap;
}
.platform-nav .nav-link i {
  font-size: .75rem;
  transition: color .2s;
}
.platform-nav .nav-link:hover {
  color: var(--navy);
  background: rgba(0,0,0,.05);
}
.platform-nav .nav-link.active {
  color: var(--red);
  background: rgba(232,24,28,.07);
  border: 1px solid rgba(232,24,28,.15);
}
.platform-nav .nav-link.active i { color: var(--red); }

/* ── Right side ── */
.platform-nav .nav-right {
  display: flex;
  align-items: center;
  gap: .65rem;
  margin-left: auto;
  flex-shrink: 0;
}

/* Profile dropdown */
.nav-profile {
  position: relative;
}

.nav-profile-btn {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .35rem .75rem .35rem .35rem;
  border-radius: var(--r-md);
  background: var(--light);
  border: 1px solid var(--light-border);
  cursor: pointer;
  transition: all .2s;
}
.nav-profile-btn:hover { background: var(--g1); border-color: rgba(0,0,0,.14); }

.nav-avatar {
  width: 30px; height: 30px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--g1);
  border: 1.5px solid var(--light-border);
  flex-shrink: 0;
}
.nav-profile-name {
  font-family: var(--syne);
  font-size: .8rem;
  font-weight: 700;
  color: var(--navy);
  max-width: 90px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: none;
}
@media(min-width:480px) { .nav-profile-name { display: block; } }

.nav-profile-chevron {
  font-size: .65rem;
  color: var(--light-muted);
  transition: transform .25s;
}
.nav-profile.open .nav-profile-chevron { transform: rotate(180deg); }

/* Dropdown */
.nav-profile-dropdown {
  position: absolute;
  top: calc(100% + .6rem);
  right: 0;
  width: 210px;
  background: var(--white);
  border: 1px solid var(--light-border);
  border-radius: var(--r-md);
  padding: .5rem;
  box-shadow: 0 12px 40px rgba(0,0,0,.12);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: all .25s cubic-bezier(.34,1.56,.64,1);
}
.nav-profile.open .nav-profile-dropdown {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.nav-profile-header {
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .6rem .5rem .75rem;
  border-bottom: 1px solid var(--light-border);
  margin-bottom: .35rem;
}
.nav-profile-header img {
  width: 36px; height: 36px;
  border-radius: 50%; object-fit: cover;
  border: 1.5px solid var(--light-border);
}
.nav-profile-header-info .name {
  font-family: var(--syne);
  font-size: .82rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.2;
}
.nav-profile-header-info .email {
  font-size: .68rem;
  color: var(--light-muted);
}

.nav-dropdown-item {
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .55rem .65rem;
  border-radius: var(--r-sm);
  font-size: .82rem;
  font-weight: 500;
  color: var(--g3);
  cursor: pointer;
  transition: all .2s;
  width: 100%;
  background: none;
  border: none;
  text-align: left;
}
.nav-dropdown-item i {
  font-size: .78rem;
  width: 16px;
  text-align: center;
  color: var(--g2);
}
.nav-dropdown-item:hover {
  background: var(--light);
  color: var(--navy);
}
.nav-dropdown-item:hover i { color: var(--amber); }
.nav-dropdown-item.danger { color: rgba(232,24,28,.8); }
.nav-dropdown-item.danger i { color: rgba(232,24,28,.5); }
.nav-dropdown-item.danger:hover { background: rgba(232,24,28,.06); color: var(--red); }
.nav-dropdown-item.danger:hover i { color: var(--red); }

/* ── Mobile hamburger ── */
.nav-hamburger {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: .5rem;
  margin-left: auto;
}
@media(min-width:768px) { .nav-hamburger { display: none; } }

.nav-hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: all .3s;
}
.nav-hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(4px,4px); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(4px,-4px); }

/* Mobile drawer */
.nav-mobile-drawer {
  display: none;
  flex-direction: column;
  gap: .25rem;
  padding: 1rem 1.5rem 1.5rem;
  background: var(--white);
  border-top: 1px solid var(--light-border);
  box-shadow: 0 8px 30px rgba(0,0,0,.08);
}
.nav-mobile-drawer.open { display: flex; }
.nav-mobile-drawer .nav-link {
  padding: .75rem 1rem;
  border-radius: var(--r-sm);
  font-size: .9rem;
  color: var(--g3);
}
.nav-mobile-drawer .nav-link:hover { color: var(--navy); background: var(--light); }
.nav-mobile-drawer .nav-link.active { color: var(--red); background: rgba(232,24,28,.06); }
.nav-mobile-drawer .nav-link i { font-size: .9rem; }
.nav-mobile-drawer .nav-divider-h {
  height: 1px;
  background: var(--light-border);
  margin: .35rem 0;
}

/* ══════════════════════════════════════
   PLATFORM FOOTER
══════════════════════════════════════ */
.platform-footer {
  padding: 4rem 0 2rem;
  background: linear-gradient(180deg, #050520 0%, #020212 100%);
  color: var(--white);
  position: relative;
}
.platform-footer::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--red), var(--orange), var(--amber), var(--lime), var(--teal), var(--sky), var(--violet), var(--rose));
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}
@media(min-width:768px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1.5fr; }
}

.footer-brand { max-width: 280px; }

.footer-logo {
  display: flex;
  align-items: center;
  gap: .65rem;
  margin-bottom: 1rem;
}
.footer-logo img { height: 28px; width: 28px; }
.footer-logo-name {
  font-family: var(--syne);
  font-weight: 800;
  font-size: 1rem;
  color: var(--white);
  line-height: 1.1;
}
.footer-logo-sub {
  font-size: .68rem;
  color: rgba(255,255,255,.4);
}

.footer-brand p {
  color: rgba(255,255,255,.45);
  font-size: .875rem;
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.footer-socials { display: flex; gap: .75rem; }
.footer-socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  background: rgba(255,255,255,.06);
  border-radius: 50%;
  color: rgba(255,255,255,.55);
  font-size: .9rem;
  transition: all .25s;
}
.footer-socials a:hover { background: var(--red); color: var(--white); transform: translateY(-2px); }

.footer-col h5 {
  font-family: var(--syne);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(255,255,255,.4);
  margin-bottom: 1.1rem;
}
.footer-col ul { display: flex; flex-direction: column; gap: .6rem; }
.footer-col a {
  color: rgba(255,255,255,.55);
  font-size: .875rem;
  transition: all .2s;
}
.footer-col a:hover { color: var(--white); padding-left: 4px; }

.footer-col .contact-item {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  color: rgba(255,255,255,.45);
  font-size: .875rem;
  line-height: 1.5;
}
.footer-col .contact-item i { color: var(--amber); margin-top: .2rem; font-size: .8rem; flex-shrink: 0; }

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .75rem;
}
.footer-bottom p { color: rgba(255,255,255,.25); font-size: .8rem; }
.footer-bottom .footer-badge {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .72rem;
  color: rgba(255,255,255,.2);
  font-family: var(--syne);
  letter-spacing: .08em;
}
.footer-bottom .footer-badge span { color: var(--red); }

/* ══════════════════════════════════════
   SHARED UTILS
══════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .7rem 1.4rem;
  font-family: var(--dm);
  font-weight: 600;
  font-size: .875rem;
  border-radius: var(--r-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all .25s;
}
.btn-red   { background: var(--red);   color: var(--white); }
.btn-red:hover   { background: var(--rd); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,24,28,.3); }
.btn-amber { background: var(--amber); color: var(--navy); }
.btn-amber:hover { background: var(--orange); transform: translateY(-2px); }
.btn-ghost-light { background: var(--light); color: var(--navy); border-color: var(--light-border); }
.btn-ghost-light:hover { background: var(--g1); }
.btn-ghost { background: rgba(255,255,255,.07); color: rgba(255,255,255,.8); border-color: var(--dark-border); }
.btn-ghost:hover { background: rgba(255,255,255,.13); color: var(--white); }
.btn-sm { padding: .5rem 1rem; font-size: .8rem; }

.toast {
  position: fixed;
  bottom: 1.5rem; right: 1.5rem;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .9rem 1.4rem;
  border-radius: var(--r-md);
  background: var(--white);
  border: 1px solid var(--light-border);
  color: var(--navy);
  font-size: .875rem;
  font-weight: 500;
  box-shadow: 0 16px 40px rgba(0,0,0,.12);
  transform: translateY(20px);
  opacity: 0;
  transition: all .35s cubic-bezier(.34,1.56,.64,1);
  pointer-events: none;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast.success { border-color: rgba(20,184,166,.35); }
.toast.error   { border-color: rgba(232,24,28,.35); }

.sr-only { position: absolute; width: 1px; height: 1px; clip: rect(0,0,0,0); overflow: hidden; }
.hidden  { display: none !important; }