/* =============================================
   NEXA SKILLS — GLOBAL MOBILE CSS v3
   ============================================= */
@media(max-width:768px){
  *{-webkit-text-size-adjust:100%}
  html,body{overflow-x:hidden!important;max-width:100vw!important}

  /* NAVBAR */
  .navbar{padding:0 14px!important;height:56px!important}
  .nav-links{display:none!important}
  .ssl-badge{display:none!important}
  .menu-toggle{display:flex!important}
  .nav-actions{gap:6px!important}
  #loginBtn,.btn-ghost.btn-sm{font-size:12px!important;padding:7px 10px!important}
  #registerBtn,.btn-primary.btn-sm{font-size:12px!important;padding:7px 10px!important}

  /* ANNOUNCEMENT */
  .announcement-bar{font-size:12px!important;padding:8px 14px!important;line-height:1.5!important}

  /* HERO */
  .hero{padding:24px 16px 32px!important}
  .hero-inner{grid-template-columns:1fr!important;gap:0!important}
  .hero-visual{display:none!important}
  .hero h1{font-size:26px!important;line-height:1.25!important}
  .hero-badge{font-size:12px!important;padding:5px 12px!important}
  .hero-desc{font-size:14px!important;margin-bottom:20px!important}
  .hero-cta,.hero-btns{flex-direction:column!important;gap:10px!important}
  .hero-cta .btn,.hero-btns .btn{width:100%!important;justify-content:center!important;padding:14px!important;font-size:15px!important}
  .hero-stats{justify-content:space-between!important;gap:0!important}
  .stat-item{flex:1!important;text-align:center!important}
  .stat-num{font-size:19px!important}
  .stat-label{font-size:10px!important}
  .stat-divider{width:1px!important;height:28px!important}

  /* TRUST / SECTIONS */
  .trust-bar{padding:10px 16px!important}
  .trust-div{display:none!important}
  .section{padding:36px 16px!important}
  .section-title{font-size:22px!important}

  /* COURSES / CATEGORIES */
  .courses-grid{grid-template-columns:1fr!important;gap:14px!important}
  .cat-grid{grid-template-columns:1fr 1fr!important;gap:10px!important}
  .features-grid{grid-template-columns:1fr!important}
  .steps-grid{grid-template-columns:1fr!important}
  .step-arrow{display:none!important}
  .testi-grid{grid-template-columns:1fr!important}

  /* CTA / FOOTER */
  .cta-section{padding:36px 16px!important}
  .cta-btns{flex-direction:column!important;gap:10px!important}
  .cta-btns .btn{width:100%!important;justify-content:center!important}
  .footer{padding:32px 16px 20px!important}
  .footer-grid{grid-template-columns:1fr!important;gap:24px!important}
  .footer-bottom{flex-direction:column!important;text-align:center!important;font-size:12px!important}
  .footer-bottom-links{justify-content:center!important;flex-wrap:wrap!important}

  /* AUTH */
  .auth-page{padding:20px 16px 40px!important}
  .auth-card{padding:24px 18px!important;width:100%!important;max-width:100%!important}
  .auth-title{font-size:22px!important}
  .btn-form{font-size:15px!important;padding:13px!important}
  .form-row{grid-template-columns:1fr!important}

  /* COURSES PAGE */
  .courses-filter{overflow-x:auto!important;flex-wrap:nowrap!important;padding:0 16px 16px!important}
  .filter-btn{white-space:nowrap!important;flex-shrink:0!important}
  .courses-wrap{padding:0 16px 40px!important}

  /* COURSE DETAIL — handled by inline style in course-detail.php */

  /* CHECKOUT */
  .checkout-layout{grid-template-columns:1fr!important;padding:16px!important;gap:16px!important}

  /* LESSON PLAYER */
  .lesson-layout{grid-template-columns:1fr!important;height:auto!important}
  .sidebar{display:none!important}
  .nav-course-title{display:none!important}

  /* QUIZ */
  .quiz-header{padding:20px!important;border-radius:12px!important}
  .question-card{padding:16px!important}
  .option{font-size:13px!important;padding:10px 12px!important}
  .result-card{padding:24px 16px!important}

  /* CERTIFICATE */
  .cert-wrapper{padding:16px 10px!important}
  .cert-content{padding:24px 14px!important}
  .cert-main-title{font-size:26px!important}
  .cert-name{font-size:34px!important}
  .cert-signatures{flex-direction:column!important;align-items:center!important;gap:14px!important}
  .cert-footer{flex-direction:column!important;text-align:center!important;gap:4px!important;padding:12px 16px!important}
  .topbar{padding:10px 14px!important;flex-wrap:wrap!important;gap:8px!important}
  .topbar-actions{flex-wrap:wrap!important;gap:6px!important}

  /* STUDENT DASHBOARD — body is flexbox, sidebar hidden on mobile */
  #dashSidebar{display:none!important;width:0!important;min-width:0!important;position:absolute!important;left:-9999px!important}
  #dashMain{width:100%!important;min-width:0!important;overflow:visible!important}
  .stats-grid{grid-template-columns:1fr 1fr!important;gap:10px!important}
  .grid2{grid-template-columns:1fr!important}
  .profile-form{grid-template-columns:1fr!important}
  .order-row{flex-direction:column!important;align-items:flex-start!important;gap:6px!important}

  /* ADMIN */
  table{min-width:500px!important}
  .card{overflow-x:auto!important}
  .btn-group{flex-wrap:wrap!important}
  .modal{padding:20px 16px!important;max-height:85vh!important}
  .fr,.fr3{grid-template-columns:1fr!important}
}

@media(max-width:400px){
  .hero h1{font-size:22px!important}
  .cert-name{font-size:28px!important}
  .cert-main-title{font-size:22px!important}
}