/* ============================================================
   LessonInc — Main Stylesheet
   Color Palette: Navy Blue + White + Gold
   ============================================================ */

:root {
  --navy:       #0B1D3A;
  --navy-mid:   #112347;
  --navy-light: #1A3666;
  --gold:       #C9A84C;
  --gold-light: #E2C174;
  --gold-pale:  #FDF6E3;
  --white:      #FFFFFF;
  --off-white:  #F8FAFF;
  --gray-100:   #F1F4F9;
  --gray-200:   #E2E8F0;
  --gray-400:   #94A3B8;
  --gray-600:   #475569;
  --gray-800:   #1E293B;
  --success:    #16A34A;
  --danger:     #DC2626;
  --shadow-sm:  0 1px 3px rgba(11,29,58,0.08);
  --shadow-md:  0 4px 16px rgba(11,29,58,0.12);
  --shadow-lg:  0 8px 32px rgba(11,29,58,0.16);
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --transition: all 0.25s ease;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Inter','Segoe UI',system-ui,sans-serif;color:var(--gray-800);background:var(--white);line-height:1.6}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul{list-style:none}
button{cursor:pointer;border:none;background:none;font-family:inherit}
input,select{font-family:inherit}

h1{font-size:clamp(2rem,4vw,3.25rem);font-weight:800;line-height:1.15}
h2{font-size:clamp(1.5rem,3vw,2.25rem);font-weight:700;line-height:1.25}
h3{font-size:1.25rem;font-weight:600}
h4{font-size:1rem;font-weight:600}
p{color:var(--gray-600)}

.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section-alt{background:var(--off-white)}
.text-center{text-align:center}
.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:20px;font-size:.72rem;font-weight:600}
.badge-gold{background:var(--gold-pale);color:var(--gold);border:1px solid var(--gold-light)}
.divider{width:60px;height:3px;background:var(--gold);border-radius:2px;margin:16px auto}

.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:var(--radius-sm);font-weight:600;font-size:.95rem;transition:var(--transition)}
.btn-primary{background:var(--gold);color:var(--navy);box-shadow:0 2px 8px rgba(201,168,76,.35)}
.btn-primary:hover{background:var(--gold-light);transform:translateY(-1px);box-shadow:0 4px 16px rgba(201,168,76,.4)}
.btn-navy{background:var(--navy);color:var(--white)}
.btn-navy:hover{background:var(--navy-light);transform:translateY(-1px)}
.btn-outline{background:transparent;color:var(--navy);border:2px solid var(--navy)}
.btn-outline:hover{background:var(--navy);color:var(--white)}
.btn-outline-white{background:transparent;color:var(--white);border:2px solid rgba(255,255,255,.6)}
.btn-outline-white:hover{background:rgba(255,255,255,.1);border-color:var(--white)}
.btn-sm{padding:8px 18px;font-size:.85rem}
.btn-lg{padding:15px 36px;font-size:1.05rem}

.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;background:var(--navy);border-bottom:1px solid rgba(201,168,76,.2);transition:var(--transition)}
.navbar.scrolled{box-shadow:0 2px 20px rgba(0,0,0,.3);background:rgba(11,29,58,.97);backdrop-filter:blur(12px)}
.navbar-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.navbar-logo{display:flex;align-items:center;gap:10px}
.navbar-logo .logo-icon{width:38px;height:38px;background:var(--gold);border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.1rem;color:var(--navy)}
.navbar-logo .logo-text{font-size:1.35rem;font-weight:800;color:var(--white);letter-spacing:-.3px}
.navbar-logo .logo-text span{color:var(--gold)}
.navbar-nav{display:flex;align-items:center;gap:8px}
.navbar-nav a{color:rgba(255,255,255,.75);font-size:.9rem;font-weight:500;padding:6px 14px;border-radius:var(--radius-sm);transition:var(--transition)}
.navbar-nav a:hover{color:var(--white);background:rgba(255,255,255,.08)}
.navbar-cta{display:flex;align-items:center;gap:10px}
.hamburger{display:none;flex-direction:column;gap:5px;padding:8px;cursor:pointer}
.hamburger span{display:block;width:24px;height:2px;background:var(--white);border-radius:2px;transition:var(--transition)}

.hero{background:linear-gradient(135deg,var(--navy) 0%,var(--navy-light) 60%,#1e4080 100%);min-height:100vh;display:flex;align-items:center;padding-top:70px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 70% 50%,rgba(201,168,76,.08) 0%,transparent 60%)}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;padding:80px 0}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(201,168,76,.15);border:1px solid rgba(201,168,76,.3);color:var(--gold-light);padding:6px 16px;border-radius:20px;font-size:.82rem;font-weight:600;margin-bottom:24px}
.hero-badge span{width:6px;height:6px;background:var(--gold);border-radius:50%;animation:pulse 1.5s infinite}
.hero h1{color:var(--white);margin-bottom:20px}
.hero h1 em{color:var(--gold);font-style:normal}
.hero-subtitle{color:rgba(255,255,255,.72);font-size:1.1rem;margin-bottom:36px;max-width:480px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:48px}
.hero-stats{display:flex;gap:32px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.1);padding-top:32px}
.hero-stat .num{font-size:1.75rem;font-weight:800;color:var(--gold);display:block;line-height:1}
.hero-stat .lbl{font-size:.82rem;color:rgba(255,255,255,.6);margin-top:4px}
.hero-visual{display:flex;justify-content:center;align-items:center;position:relative}
.hero-card-stack{position:relative;width:360px;height:420px}
.floating-card{position:absolute;background:var(--white);border-radius:var(--radius-md);padding:20px;box-shadow:var(--shadow-lg)}
.floating-card.card-main{width:280px;top:40px;left:40px;border-top:3px solid var(--gold)}
.floating-card.card-stat{width:160px;bottom:60px;right:0;border-left:3px solid var(--gold)}
.floating-card.card-badge{width:140px;top:0;right:20px;text-align:center;padding:14px}
.fc-avatar{width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,var(--navy),var(--navy-light));display:flex;align-items:center;justify-content:center;color:var(--gold);font-weight:700;font-size:1.2rem;margin-bottom:12px}
.fc-name{font-weight:700;color:var(--navy);font-size:.95rem}
.fc-sub{font-size:.78rem;color:var(--gray-400);margin:2px 0 10px}
.fc-stars{color:#F59E0B;font-size:.85rem}
.fc-price{font-size:.8rem;color:var(--gray-600);margin-top:8px}
.fc-price strong{color:var(--navy)}
.fc-num{font-size:1.5rem;font-weight:800;color:var(--navy)}
.fc-lbl{font-size:.75rem;color:var(--gray-400)}
.verified-icon{font-size:2rem;margin-bottom:8px}

.search-section{background:var(--white);padding:40px 0}
.search-box{background:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);border:1px solid var(--gray-200);padding:28px 32px}
.search-box-title{font-size:1rem;font-weight:600;color:var(--navy);margin-bottom:20px;display:flex;align-items:center;gap:8px}
.search-grid{display:grid;grid-template-columns:1fr 1fr 1fr 1fr auto;gap:14px;align-items:end}
.search-field label{display:block;font-size:.78rem;font-weight:600;color:var(--gray-600);margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px}
.search-field input,.search-field select{width:100%;padding:12px 16px;border:1.5px solid var(--gray-200);border-radius:var(--radius-sm);font-size:.92rem;color:var(--gray-800);transition:var(--transition);background:var(--off-white)}
.search-field input:focus,.search-field select:focus{outline:none;border-color:var(--navy);background:var(--white);box-shadow:0 0 0 3px rgba(11,29,58,.06)}

.stats-bar{background:var(--navy);padding:28px 0}
.stats-bar-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:24px}
.stat-item{display:flex;align-items:center;gap:14px}
.stat-icon{width:44px;height:44px;background:rgba(201,168,76,.15);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.2rem}
.stat-num{font-size:1.5rem;font-weight:800;color:var(--gold);line-height:1}
.stat-lbl{font-size:.78rem;color:rgba(255,255,255,.6);margin-top:2px}

.section-header{margin-bottom:48px}
.section-header.centered{text-align:center}
.section-tag{display:inline-flex;align-items:center;gap:6px;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:1.2px;color:var(--gold);margin-bottom:12px}
.section-tag::before{content:'';display:block;width:20px;height:2px;background:var(--gold)}
.section-title{color:var(--navy);margin-bottom:12px}
.section-subtitle{color:var(--gray-600);font-size:1.02rem;max-width:560px}
.section-header.centered .section-subtitle{margin:0 auto}

.filter-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:32px}
.filter-tab{padding:8px 20px;border-radius:20px;font-size:.85rem;font-weight:600;border:1.5px solid var(--gray-200);color:var(--gray-600);background:var(--white);transition:var(--transition);cursor:pointer}
.filter-tab:hover{border-color:var(--navy);color:var(--navy)}
.filter-tab.active{background:var(--navy);color:var(--white);border-color:var(--navy)}

.tutors-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.tutor-card{background:var(--white);border-radius:var(--radius-md);border:1px solid var(--gray-200);overflow:hidden;transition:var(--transition);position:relative;cursor:pointer}
.tutor-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(201,168,76,.4)}
.tutor-card-header{background:linear-gradient(135deg,var(--navy) 0%,var(--navy-light) 100%);padding:20px;display:flex;align-items:center;gap:14px;position:relative}
.tutor-avatar{width:60px;height:60px;border-radius:50%;border:3px solid rgba(201,168,76,.5);background:var(--navy-light);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.4rem;color:var(--gold);flex-shrink:0;overflow:hidden}
.tutor-avatar img{width:100%;height:100%;object-fit:cover}
.tutor-header-info{flex:1;min-width:0}
.tutor-name{font-weight:700;color:var(--white);font-size:.98rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tutor-city{font-size:.78rem;color:rgba(255,255,255,.6);margin-top:2px}
.tutor-card-badges{position:absolute;top:12px;right:12px;display:flex;flex-direction:column;gap:4px;align-items:flex-end}
.verified-badge{background:rgba(201,168,76,.2);color:var(--gold-light);border:1px solid rgba(201,168,76,.4);font-size:.68rem;font-weight:700;padding:2px 8px;border-radius:10px}
.tutor-card-body{padding:18px 20px}
.tutor-subjects{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.subject-tag{font-size:.72rem;font-weight:600;padding:3px 10px;background:var(--gray-100);color:var(--navy);border-radius:12px}
.tutor-rating{display:flex;align-items:center;gap:6px;margin-bottom:10px}
.stars{color:#F59E0B;font-size:.85rem;letter-spacing:1px}
.rating-num{font-weight:700;color:var(--navy);font-size:.88rem}
.rating-count{color:var(--gray-400);font-size:.78rem}
.tutor-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.tutor-mode{font-size:.78rem;color:var(--gray-600);display:flex;align-items:center;gap:4px}
.tutor-exp{font-size:.78rem;color:var(--gray-600)}
.tutor-price{font-size:.82rem;color:var(--gray-600)}
.tutor-price strong{color:var(--navy);font-size:.95rem}
.tutor-card-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:0 20px 18px}

.categories-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:16px}
.category-card{background:var(--white);border-radius:var(--radius-md);border:1.5px solid var(--gray-200);padding:24px 20px;text-align:center;transition:var(--transition);cursor:pointer}
.category-card:hover{border-color:var(--navy);transform:translateY(-3px);box-shadow:var(--shadow-md)}
.category-card.featured{border-color:var(--gold);background:var(--gold-pale)}
.cat-icon{width:56px;height:56px;border-radius:14px;background:var(--gray-100);display:flex;align-items:center;justify-content:center;font-size:1.6rem;margin:0 auto 14px;transition:var(--transition)}
.category-card:hover .cat-icon{background:var(--navy)}
.cat-name{font-weight:700;color:var(--navy);font-size:.92rem;margin-bottom:4px}
.cat-count{font-size:.75rem;color:var(--gray-400)}

.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;position:relative}
.steps-grid::before{content:'';position:absolute;top:36px;left:calc(16.66% + 20px);right:calc(16.66% + 20px);height:2px;border-top:2px dashed var(--gold-light);z-index:0}
.step-card{text-align:center;position:relative;z-index:1}
.step-num{width:72px;height:72px;border-radius:50%;background:var(--navy);color:var(--gold);font-size:1.5rem;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;border:3px solid var(--gold-pale);box-shadow:0 0 0 6px var(--white),0 0 0 8px var(--gray-100)}
.step-title{font-weight:700;color:var(--navy);margin-bottom:10px}
.step-desc{font-size:.88rem;color:var(--gray-600)}

.why-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.why-card{background:var(--white);border-radius:var(--radius-md);padding:28px;border:1px solid var(--gray-200);display:flex;gap:20px;align-items:flex-start;transition:var(--transition)}
.why-card:hover{box-shadow:var(--shadow-md);border-color:rgba(201,168,76,.3)}
.why-icon{width:52px;height:52px;border-radius:12px;background:var(--navy);color:var(--gold);display:flex;align-items:center;justify-content:center;font-size:1.4rem;flex-shrink:0}
.why-title{font-weight:700;color:var(--navy);margin-bottom:6px}
.why-desc{font-size:.88rem;color:var(--gray-600)}

.cta-banner{background:linear-gradient(135deg,var(--navy) 0%,var(--navy-light) 100%);padding:72px 0;position:relative;overflow:hidden}
.cta-banner::before{content:'';position:absolute;top:-80px;right:-80px;width:300px;height:300px;background:radial-gradient(circle,rgba(201,168,76,.12) 0%,transparent 70%)}
.cta-inner{text-align:center;position:relative;z-index:1}
.cta-inner h2{color:var(--white);margin-bottom:16px}
.cta-inner p{color:rgba(255,255,255,.7);font-size:1.05rem;margin-bottom:36px}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

.footer{background:#07111F;padding:56px 0 28px;color:rgba(255,255,255,.7)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px}
.footer-brand .logo-text{color:var(--white);font-size:1.4rem;font-weight:800}
.footer-brand .logo-text span{color:var(--gold)}
.footer-tagline{font-size:.88rem;color:rgba(255,255,255,.5);margin-top:12px;max-width:260px;line-height:1.7}
.footer-heading{font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:1.2px;color:var(--gold);margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:.88rem;color:rgba(255,255,255,.55);transition:var(--transition)}
.footer-links a:hover{color:var(--gold)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:28px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer-copy{font-size:.82rem;color:rgba(255,255,255,.4)}
.footer-legal{display:flex;gap:20px}
.footer-legal a{font-size:.82rem;color:rgba(255,255,255,.4);transition:var(--transition)}
.footer-legal a:hover{color:var(--gold)}

.spinner{width:36px;height:36px;border:3px solid var(--gray-200);border-top-color:var(--navy);border-radius:50%;animation:spin .8s linear infinite;margin:40px auto}
.loader-text{text-align:center;color:var(--gray-400);font-size:.88rem;margin-top:12px}
.toast-container{position:fixed;bottom:24px;right:24px;z-index:9999;display:flex;flex-direction:column;gap:10px}
.toast{background:var(--navy);color:var(--white);padding:14px 20px;border-radius:var(--radius-sm);font-size:.88rem;font-weight:500;box-shadow:var(--shadow-lg);border-left:4px solid var(--gold);animation:slideIn .3s ease;max-width:320px}
.toast.success{border-left-color:var(--success)}
.toast.error{border-left-color:var(--danger)}

@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.6;transform:scale(1.2)}}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}
@keyframes fadeUp{from{transform:translateY(24px);opacity:0}to{transform:translateY(0);opacity:1}}
.fade-up{animation:fadeUp .5s ease forwards}

@media(max-width:1024px){.hero-grid{grid-template-columns:1fr;gap:40px}.hero-visual{display:none}.search-grid{grid-template-columns:1fr 1fr}.search-grid>.btn{grid-column:1/-1;width:100%;justify-content:center}.footer-grid{grid-template-columns:1fr 1fr}.why-grid{grid-template-columns:1fr}}
@media(max-width:768px){.section{padding:48px 0}.navbar-nav{display:none}.hamburger{display:flex}.navbar-nav.open{display:flex;flex-direction:column;align-items:flex-start;position:absolute;top:70px;left:0;right:0;background:var(--navy);padding:16px 24px;border-top:1px solid rgba(255,255,255,.1)}.hero{min-height:auto}.hero-grid{padding:48px 0}.search-grid{grid-template-columns:1fr}.steps-grid{grid-template-columns:1fr}.steps-grid::before{display:none}.stats-bar-inner{justify-content:center;gap:20px}.footer-grid{grid-template-columns:1fr;gap:32px}.footer-bottom{flex-direction:column;text-align:center}.categories-grid{grid-template-columns:repeat(2,1fr)}.tutors-grid{grid-template-columns:1fr}.why-grid{grid-template-columns:1fr}.cta-actions{flex-direction:column;align-items:center}}