/* ============================================================
   COMPONENTS.CSS — Shared UI Components
   منصة التعلم الذكية
   ============================================================ */

/* ── TOP NAV ── */
.top-nav {
  position: sticky; top: 0; z-index: 200;
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 28px;
  background: rgba(8,12,30,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-p);
  contain: layout;
}

.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-logo-icon {
  font-size: 26px;
  animation: pulse 2s infinite;
  will-change: transform;
}
.nav-logo-text {
  font-size: 16px; font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-center .grade-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  padding: 6px 18px; border-radius: 50px; font-size: 13px; font-weight: 700;
  box-shadow: 0 4px 15px rgba(108,62,255,0.3);
}
.nav-actions { display: flex; align-items: center; gap: 12px; }

.btn-nav {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 50px;
  border: 1px solid var(--border-p); background: var(--glass);
  color: var(--text); font-size: 13px; font-weight: 600;
  transition: background .25s, border-color .25s, transform .25s;
}
.btn-nav:hover {
  background: rgba(108,62,255,0.2);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.user-chip {
  display: flex; align-items: center; gap: 8px;
  background: var(--glass); border: 1px solid var(--border);
  padding: 6px 14px; border-radius: 50px;
}
.user-chip-avatar { font-size: 20px; }
.user-chip-name   { font-size: 13px; font-weight: 700; }

/* ── BUTTONS ── */
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-l));
  color: #fff; border: none; padding: 12px 28px; border-radius: 50px;
  font-size: 15px; font-weight: 700;
  transition: transform .25s, box-shadow .25s;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--glow); }

.btn-secondary {
  background: transparent; color: var(--text2);
  border: 1px solid var(--border); padding: 10px 20px; border-radius: 50px;
  font-size: 14px; font-weight: 600;
  transition: background .25s, color .25s;
}
.btn-secondary:hover { background: var(--glass-h); color: var(--text); }

.btn-success {
  background: linear-gradient(135deg, var(--green), #00A85A);
  color: #fff; border: none; padding: 12px 28px; border-radius: 50px;
  font-size: 15px; font-weight: 700;
  transition: transform .25s, box-shadow .25s;
}
.btn-success:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(0,217,126,0.4); }

/* ── CARD ── */
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r); padding: 24px;
  transition: border-color .3s, box-shadow .3s, transform .3s;
  contain: layout;
}
.card:hover {
  border-color: var(--primary);
  box-shadow: var(--glow);
  transform: translateY(-4px);
}

/* ── SECTION HEADER ── */
.section-header { text-align: center; margin-bottom: 32px; }
.section-title  { font-size: 26px; font-weight: 900; margin-bottom: 8px; }
.section-sub    { color: var(--text2); font-size: 15px; }

/* ── BADGES ── */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 14px; border-radius: 50px; font-size: 12px; font-weight: 700;
}
.badge-purple { background: rgba(108,62,255,0.15); border: 1px solid rgba(108,62,255,0.3); color: var(--primary-l); }
.badge-green  { background: rgba(0,217,126,0.15);  border: 1px solid rgba(0,217,126,0.3);  color: var(--green); }
.badge-orange { background: rgba(255,107,53,0.15); border: 1px solid rgba(255,107,53,0.3); color: var(--secondary-l); }
.badge-gray   { background: rgba(255,255,255,0.05); border: 1px solid var(--border); color: var(--text3); }
.badge-yellow { background: rgba(255,214,0,0.15); border: 1px solid rgba(255,214,0,0.3); color: var(--yellow); }

/* ── MODAL ── */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.8);
  backdrop-filter: blur(8px); z-index: 1000;
  display: none; align-items: center; justify-content: center; padding: 20px;
}
.modal-overlay.open { display: flex; animation: fadeIn .3s ease; }
.modal-box {
  background: var(--card); border: 1px solid var(--border-p);
  border-radius: var(--r); padding: 36px; max-width: 520px; width: 100%;
  position: relative; animation: popIn .4s cubic-bezier(.34,1.56,.64,1);
  max-height: 90vh; overflow-y: auto;
}
.modal-close {
  position: absolute; top: 14px; left: 14px;
  background: var(--glass); border: 1px solid var(--border);
  color: var(--text2); width: 34px; height: 34px; border-radius: 50%;
  font-size: 14px; display: flex; align-items: center; justify-content: center;
  transition: background .2s, color .2s;
}
.modal-close:hover { background: var(--glass-h); color: var(--text); }

/* ── GLOBAL TOAST ── */
.global-toast {
  position: fixed; bottom: 30px; left: 50%;
  transform: translateX(-50%) translateY(80px);
  padding: 14px 30px; border-radius: 50px;
  color: #fff; font-size: 16px; font-weight: 700;
  z-index: 99999; box-shadow: 0 8px 30px rgba(0,0,0,0.4);
  transition: transform .4s cubic-bezier(.34,1.56,.64,1);
  direction: rtl; white-space: nowrap; pointer-events: none;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .top-nav    { padding: 10px 16px; }
  .nav-center { display: none; }
}