/* ============================================================
   CROCHÊ PREMIUM — ESTILOS GLOBAIS
   Mobile-first, dark theme, acento verde
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── VARIÁVEIS ─────────────────────────────────────────── */
:root {
  --bg:          #0a0a0f;
  --surface:     #14141c;
  --surface-2:   #1e1e2c;
  --border:      #2a2a3a;
  --green:       #4ade80;
  --green-dark:  #16a34a;
  --green-glow:  rgba(74, 222, 128, 0.15);
  --text:        #f0f0f5;
  --text-muted:  #8888aa;
  --text-dim:    #555570;
  --red:         #f87171;
  --fav:         #f472b6;
  --radius:      14px;
  --radius-sm:   8px;
  --shadow:      0 4px 24px rgba(0,0,0,.6);
  --transition:  all .25s cubic-bezier(.4,0,.2,1);
  --header-h:    60px;
  --nav-h:       64px;
}

/* ── RESET ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; outline: none; }
img { display: block; max-width: 100%; }
input { font-family: inherit; }

/* ── SCROLLBAR ─────────────────────────────────────────── */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }

/* ══════════════════════════════════════════════════════════
   LOGIN PAGE
   ══════════════════════════════════════════════════════════ */
.login-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  padding: 24px;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(74,222,128,.08) 0%, transparent 70%),
    var(--bg);
}

.login-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 40px;
}
.login-logo .logo-icon {
  width: 72px; height: 72px;
  background: var(--green-glow);
  border: 2px solid rgba(74,222,128,.3);
  border-radius: 20px;
  display: flex; align-items: center; justify-content: center;
  font-size: 36px;
}
.login-logo h1 {
  font-size: 1.6rem; font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #fff 30%, var(--green));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.login-logo p {
  font-size: 0.82rem; color: var(--text-muted); letter-spacing: .02em;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  width: 100%; max-width: 400px;
  box-shadow: var(--shadow);
}
.login-card h2 {
  font-size: 1.1rem; font-weight: 700; margin-bottom: 6px;
}
.login-card .subtitle {
  font-size: 0.82rem; color: var(--text-muted); margin-bottom: 28px;
}

.input-group { margin-bottom: 16px; }
.input-group label {
  display: block; font-size: 0.78rem; font-weight: 600;
  color: var(--text-muted); margin-bottom: 8px; letter-spacing: .04em;
  text-transform: uppercase;
}
.input-group input {
  width: 100%; padding: 14px 16px;
  background: var(--surface-2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text); font-size: 1rem;
  transition: var(--transition);
}
.input-group input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px var(--green-glow);
  outline: none;
}
.input-group input::placeholder { color: var(--text-dim); }

.btn-primary {
  width: 100%; padding: 15px;
  background: var(--green);
  color: #0a0a0f; font-size: 1rem; font-weight: 700;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  border: none;
  letter-spacing: .01em;
}
.btn-primary:hover { background: #6ee79e; transform: translateY(-1px); box-shadow: 0 8px 24px rgba(74,222,128,.3); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; transform: none; }

.login-msg {
  margin-top: 14px; padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem; font-weight: 500;
  display: none; text-align: center;
}
.login-msg.error { background: rgba(248,113,113,.12); border: 1px solid rgba(248,113,113,.3); color: var(--red); display: block; }
.login-msg.loading { background: var(--green-glow); border: 1px solid rgba(74,222,128,.3); color: var(--green); display: block; }

.login-footer {
  text-align: center; margin-top: 24px;
  font-size: 0.75rem; color: var(--text-dim);
}

/* ══════════════════════════════════════════════════════════
   APP SHELL (home, favorites)
   ══════════════════════════════════════════════════════════ */
.app-page { padding-bottom: calc(var(--nav-h) + 12px); }

/* ── HEADER ─────────────────────────────────────────────── */
.app-header {
  position: sticky; top: 0; z-index: 100;
  height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 16px;
  background: linear-gradient(180deg, rgba(10,10,15,.98) 0%, rgba(10,10,15,.7) 100%);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.04);
}
.app-header .brand {
  display: flex; align-items: center; gap: 8px;
}
.app-header .brand-icon { font-size: 22px; }
.app-header .brand-name {
  font-size: 1.1rem; font-weight: 800; letter-spacing: -0.02em;
  background: linear-gradient(135deg, #fff 30%, var(--green));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.app-header .header-actions { display: flex; gap: 8px; }
.icon-btn {
  width: 40px; height: 40px;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 17px; transition: var(--transition); cursor: pointer;
}
.icon-btn:hover { background: var(--surface); border-color: var(--green); }

/* ── BOTTOM NAV ─────────────────────────────────────────── */
.bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  background: rgba(14,14,20,.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border);
  display: flex; align-items: stretch;
}
.nav-item {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 4px;
  font-size: 0.65rem; font-weight: 600;
  color: var(--text-dim); letter-spacing: .04em;
  text-transform: uppercase; transition: var(--transition);
  cursor: pointer; text-decoration: none;
}
.nav-item .nav-icon { font-size: 20px; transition: var(--transition); }
.nav-item.active { color: var(--green); }
.nav-item.active .nav-icon { filter: drop-shadow(0 0 6px var(--green)); }
.nav-item:hover { color: var(--text); }

/* ── HERO BANNER ────────────────────────────────────────── */
.hero {
  position: relative; height: 260px; margin-bottom: 24px;
  overflow: hidden;
}
@media(min-width:640px){ .hero { height: 380px; } }
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
}
.hero-gradient {
  position: absolute; inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(10,10,15,0) 0%,
    rgba(10,10,15,.4) 40%,
    rgba(10,10,15,.92) 85%,
    var(--bg) 100%
  );
}
.hero-content {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 20px 16px 16px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.68rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: var(--green);
  background: rgba(74,222,128,.12);
  border: 1px solid rgba(74,222,128,.3);
  border-radius: 99px; padding: 3px 10px; margin-bottom: 8px;
}
.hero-title {
  font-size: 1.5rem; font-weight: 800; line-height: 1.2;
  letter-spacing: -0.02em; margin-bottom: 12px;
  text-shadow: 0 2px 12px rgba(0,0,0,.8);
}
.hero-category { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 14px; }
.hero-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 22px;
  background: var(--green); color: #0a0a0f;
  font-size: 0.9rem; font-weight: 700; border-radius: var(--radius-sm);
  transition: var(--transition);
}
.hero-btn:hover { background: #6ee79e; transform: scale(1.03); }

/* ── SEÇÃO / CARROSSEL ──────────────────────────────────── */
.section { margin-bottom: 32px; }
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 16px; margin-bottom: 14px;
}
.section-title {
  font-size: 1rem; font-weight: 700; letter-spacing: -0.01em;
  display: flex; align-items: center; gap: 8px;
}
.section-icon { font-size: 1.1em; }
.section-count {
  font-size: 0.72rem; color: var(--text-muted); font-weight: 500;
}

.carousel {
  padding: 0 16px;
  display: flex; gap: 12px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.carousel::-webkit-scrollbar { display: none; }

/* ── CAROUSEL ARROWS ────────────────────────────────────── */
.carousel-arrow {
  width: 30px; height: 30px;
  background: var(--surface-2);
  border: 1.5px solid var(--border);
  border-radius: 50%;
  color: var(--text); font-size: 1.3rem; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: var(--transition);
  flex-shrink: 0;
  font-family: inherit;
}
.carousel-arrow:hover {
  background: var(--green-glow);
  border-color: var(--green);
  color: var(--green);
  transform: scale(1.1);
}
.carousel-arrow:active { transform: scale(0.95); }


/* ── CARD ───────────────────────────────────────────────── */
.card {
  flex-shrink: 0;
  width: 130px;
  scroll-snap-align: start;
  cursor: pointer;
  position: relative;
  transition: var(--transition);
}
@media(min-width:400px){ .card { width: 145px; } }
@media(min-width:768px){ .card { width: 170px; } }

.card:hover { transform: translateY(-4px) scale(1.02); }

.card-thumb {
  width: 100%; aspect-ratio: 2/3;
  border-radius: var(--radius);
  overflow: hidden; position: relative;
  background: var(--surface-2);
  box-shadow: 0 4px 16px rgba(0,0,0,.5);
}
.card-thumb img {
  width: 100%; height: 100%; object-fit: cover;
}
.card-thumb-gradient {
  width: 100%; height: 100%;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 10px; padding: 12px;
  text-align: center;
}
.card-thumb-icon { font-size: 2rem; }
.card-thumb-label {
  font-size: 0.68rem; font-weight: 700;
  color: rgba(255,255,255,.9); line-height: 1.3;
  text-shadow: 0 1px 4px rgba(0,0,0,.6);
}

.card-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.75) 0%, transparent 50%);
  border-radius: var(--radius);
  opacity: 0; transition: var(--transition);
}
.card:hover .card-overlay { opacity: 1; }

.card-badges {
  position: absolute; top: 8px; right: 8px;
  display: flex; flex-direction: column; gap: 4px;
}
.badge-fav {
  width: 26px; height: 26px;
  background: rgba(0,0,0,.6); backdrop-filter: blur(4px);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 13px;
}
.badge-viewed {
  width: 26px; height: 26px;
  background: rgba(74,222,128,.2); backdrop-filter: blur(4px);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 11px; color: var(--green);
}

.card-title {
  margin-top: 8px; padding: 0 2px;
  font-size: 0.78rem; font-weight: 600;
  color: var(--text); line-height: 1.3;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── GRID FAVORITOS ─────────────────────────────────────── */
.fav-page-header {
  padding: 16px 16px 8px;
  font-size: 1.2rem; font-weight: 800; letter-spacing: -0.02em;
}
.fav-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 10px; padding: 12px 16px;
}
@media(min-width:480px){ .fav-grid { grid-template-columns: repeat(4,1fr); } }
@media(min-width:768px){ .fav-grid { grid-template-columns: repeat(5,1fr); } }

.fav-empty {
  text-align: center; padding: 60px 24px;
  display: flex; flex-direction: column;
  align-items: center; gap: 16px;
}
.fav-empty .empty-icon { font-size: 3rem; opacity: .4; }
.fav-empty p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.5; }

/* ══════════════════════════════════════════════════════════
   VIEWER PAGE
   ══════════════════════════════════════════════════════════ */
.viewer-page {
  display: flex; flex-direction: column;
  height: 100dvh; overflow: hidden;
}

.viewer-header {
  flex-shrink: 0;
  height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 12px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  gap: 8px;
}
.viewer-back {
  width: 40px; height: 40px; flex-shrink: 0;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 20px; cursor: pointer; transition: var(--transition);
}
.viewer-back:hover { border-color: var(--green); }
.viewer-title {
  flex: 1; font-size: 0.88rem; font-weight: 600;
  overflow: hidden; white-space: nowrap; text-overflow: ellipsis;
}
.viewer-actions { display: flex; gap: 6px; flex-shrink: 0; }
.btn-fav, .btn-viewed {
  width: 40px; height: 40px;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 17px; cursor: pointer; transition: var(--transition);
}
.btn-fav:hover { border-color: var(--fav); }
.btn-fav.active { background: rgba(244,114,182,.15); border-color: var(--fav); }
.btn-viewed:hover { border-color: var(--green); }
.btn-viewed.active { background: rgba(74,222,128,.15); border-color: var(--green); }

.viewer-body { flex: 1; overflow: hidden; position: relative; }
.viewer-frame {
  width: 100%; height: 100%;
  border: none; display: block;
  background: #fff;
}

/* Fallback mobile */
.viewer-fallback {
  display: none;
  flex-direction: column; align-items: center; justify-content: center;
  gap: 20px; padding: 40px 24px; height: 100%;
}
.viewer-fallback .fallback-icon { font-size: 3rem; }
.viewer-fallback p { font-size: 0.9rem; color: var(--text-muted); text-align: center; line-height: 1.5; }
.btn-open-pdf {
  padding: 14px 28px;
  background: var(--green); color: #0a0a0f;
  font-size: 0.95rem; font-weight: 700; border-radius: var(--radius-sm);
  border: none; cursor: pointer; transition: var(--transition);
}
.btn-open-pdf:hover { background: #6ee79e; }

/* ══════════════════════════════════════════════════════════
   UTILITÁRIOS
   ══════════════════════════════════════════════════════════ */
.page-content { padding: 0; }

.search-bar {
  padding: 12px 16px;
  position: sticky; top: var(--header-h); z-index: 50;
  background: var(--bg);
}
.search-input-wrap { position: relative; }
.search-icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); font-size: 16px; color: var(--text-dim); pointer-events: none; }
.search-input {
  width: 100%; padding: 11px 14px 11px 38px;
  background: var(--surface-2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text); font-size: 0.9rem;
  transition: var(--transition);
}
.search-input:focus { border-color: var(--green); box-shadow: 0 0 0 3px var(--green-glow); outline: none; }
.search-input::placeholder { color: var(--text-dim); }

/* Toast */
.toast {
  position: fixed; bottom: calc(var(--nav-h) + 16px); left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--surface-2); border: 1px solid var(--border);
  color: var(--text); font-size: 0.82rem; font-weight: 600;
  padding: 10px 20px; border-radius: 99px;
  white-space: nowrap; z-index: 999;
  opacity: 0; transition: all .3s ease; pointer-events: none;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Loader */
.loader-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 16px;
}
.loader-spinner {
  width: 40px; height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loader-text { font-size: 0.82rem; color: var(--text-muted); }
.loader-overlay.hidden { opacity: 0; pointer-events: none; transition: opacity .3s ease; }

/* Fade in */
.fade-in { animation: fadeIn .4s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ── RESPONSIVE ─────────────────────────────────────────── */
@media(min-width:768px) {
  .hero { height: 420px; }
  .hero-title { font-size: 2rem; }
  .section-title { font-size: 1.1rem; }
  .card { width: 160px; }
}
@media(min-width:1024px) {
  .bottom-nav { display: none; }
  .viewer-header { padding: 0 24px; }
}