/*
Theme Name: Adiroop
Theme URI: https://adiroop.com
Author: Adiroop
Author URI: https://adiroop.com
Description: Adiroop – Accounting Courses, Tools & Templates. Login required for courses only; all apps, tools, and templates are freely accessible.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: adiroop
Tags: education, accounting, custom-menu, custom-logo, featured-images
*/

/* ============================================================
   RESET & ROOT VARIABLES
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy:      #0a1628;
  --navy2:     #112240;
  --navy3:     #1a3a6b;
  --gold:      #c9a84c;
  --gold2:     #e8c76a;
  --gold-light:#fdf6e3;
  --white:     #ffffff;
  --off:       #f7f8fc;
  --text:      #1a1a2e;
  --muted:     #5a6580;
  --border:    rgba(201,168,76,0.2);
  --radius:    10px;
  --radius-lg: 16px;
}

html { scroll-behavior: smooth; }
body { font-family: 'DM Sans', sans-serif; color: var(--text); background: var(--white); overflow-x: hidden; }

/* ============================================================
   NAV
   ============================================================ */
nav.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(10,22,40,0.97); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 2rem;
  height: 68px; display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.nav-logo-icon {
  width: 36px; height: 36px; background: var(--gold); border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-family: 'Playfair Display', serif; font-weight: 700; font-size: 18px; color: var(--navy);
}
.nav-logo-text { font-family: 'Playfair Display', serif; font-size: 22px; font-weight: 700; color: var(--white); }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  color: rgba(255,255,255,0.75); text-decoration: none; font-size: 14px;
  padding: 6px 12px; border-radius: 6px; transition: all 0.2s;
}
.nav-links a:hover { color: var(--gold); background: rgba(201,168,76,0.1); }
.nav-cta { background: var(--gold); color: var(--navy) !important; font-weight: 600; padding: 8px 18px !important; border-radius: 8px !important; }
.nav-cta:hover { background: var(--gold2) !important; }
.nav-account-link { color: rgba(255,255,255,0.75) !important; }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; background: none; border: none; }
.hamburger span { width: 24px; height: 2px; background: var(--white); border-radius: 2px; display: block; transition: all 0.3s; }
.mobile-menu {
  display: none; position: fixed; top: 68px; left: 0; right: 0;
  background: var(--navy); border-bottom: 1px solid var(--border);
  padding: 1rem 2rem; z-index: 999; flex-direction: column; gap: 4px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  color: rgba(255,255,255,0.8); text-decoration: none; font-size: 15px;
  padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,0.05);
}
.mobile-menu a:hover { color: var(--gold); }

/* ============================================================
   HERO
   ============================================================ */
#home {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy2) 60%, #0d2952 100%);
  display: flex; align-items: center; padding-top: 68px; position: relative; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; opacity: 0.04;
  background-image: radial-gradient(circle at 20% 50%, var(--gold) 1px, transparent 1px),
                    radial-gradient(circle at 80% 20%, var(--gold) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-glow {
  position: absolute; top: 20%; right: 10%; width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(201,168,76,0.12) 0%, transparent 70%); border-radius: 50%;
}
.hero-inner {
  max-width: 1200px; margin: 0 auto; padding: 4rem 2rem;
  display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; position: relative; z-index: 1;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(201,168,76,0.15); border: 1px solid rgba(201,168,76,0.3);
  color: var(--gold); font-size: 13px; font-weight: 500;
  padding: 6px 14px; border-radius: 20px; margin-bottom: 1.5rem;
}
.hero-badge::before { content: ''; width: 6px; height: 6px; background: var(--gold); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1;} 50%{opacity:0.4;} }
.hero-title { font-family: 'Playfair Display', serif; font-size: 52px; font-weight: 700; color: var(--white); line-height: 1.15; margin-bottom: 1.25rem; }
.hero-title span { color: var(--gold); }
.hero-desc { font-size: 17px; color: rgba(255,255,255,0.65); line-height: 1.7; margin-bottom: 2rem; max-width: 480px; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  background: var(--gold); color: var(--navy); font-weight: 600; font-size: 15px;
  padding: 13px 28px; border-radius: var(--radius); text-decoration: none;
  transition: all 0.2s; border: none; cursor: pointer; display: inline-block;
}
.btn-primary:hover { background: var(--gold2); transform: translateY(-1px); }
.btn-outline {
  background: transparent; color: var(--white); font-weight: 500; font-size: 15px;
  padding: 13px 28px; border-radius: var(--radius); text-decoration: none;
  border: 1px solid rgba(255,255,255,0.25); transition: all 0.2s; display: inline-block;
}
.btn-outline:hover { border-color: var(--gold); color: var(--gold); }
.hero-stats { display: flex; gap: 2rem; margin-top: 2.5rem; }
.hero-stat .num { font-family: 'Playfair Display', serif; font-size: 28px; font-weight: 700; color: var(--gold); }
.hero-stat .lbl { font-size: 13px; color: rgba(255,255,255,0.5); margin-top: 2px; }
.hero-visual { display: flex; flex-direction: column; gap: 14px; }
.hero-card {
  background: rgba(255,255,255,0.05); border: 1px solid rgba(201,168,76,0.2);
  border-radius: var(--radius-lg); padding: 1.25rem 1.5rem; backdrop-filter: blur(8px);
}
.hero-card-label { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.07em; color: var(--gold); margin-bottom: 0.5rem; }
.hero-card-title { font-size: 15px; font-weight: 500; color: var(--white); margin-bottom: 4px; }
.hero-card-meta { font-size: 12px; color: rgba(255,255,255,0.4); }
.hero-card-price { font-size: 18px; font-weight: 600; color: var(--gold2); margin-top: 8px; }

/* ============================================================
   SECTIONS
   ============================================================ */
section { padding: 5rem 2rem; }
.section-inner { max-width: 1200px; margin: 0 auto; }
.section-tag {
  display: inline-block; font-size: 12px; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--gold); background: var(--gold-light);
  border: 1px solid rgba(201,168,76,0.3); padding: 5px 14px; border-radius: 20px; margin-bottom: 1rem;
}
.section-title { font-family: 'Playfair Display', serif; font-size: 38px; font-weight: 700; color: var(--navy); line-height: 1.2; margin-bottom: 0.75rem; }
.section-title span { color: var(--gold); }
.section-sub { font-size: 16px; color: var(--muted); line-height: 1.6; max-width: 540px; }
.section-header { margin-bottom: 3rem; }

/* ============================================================
   FEATURES
   ============================================================ */
#home-features { background: var(--off); }
.features-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.feature-card {
  background: var(--white); border: 1px solid rgba(0,0,0,0.07);
  border-radius: var(--radius-lg); padding: 1.75rem; transition: all 0.25s;
}
.feature-card:hover { border-color: var(--gold); transform: translateY(-3px); box-shadow: 0 12px 40px rgba(201,168,76,0.12); }
.feature-icon { width: 48px; height: 48px; background: var(--gold-light); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 22px; margin-bottom: 1rem; }
.feature-card h3 { font-size: 17px; font-weight: 600; color: var(--navy); margin-bottom: 0.5rem; }
.feature-card p { font-size: 14px; color: var(--muted); line-height: 1.6; }

/* ============================================================
   COURSES
   ============================================================ */
#courses { background: var(--white); }
.courses-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.course-card { border: 1px solid rgba(0,0,0,0.08); border-radius: var(--radius-lg); overflow: hidden; transition: all 0.25s; }
.course-card:hover { box-shadow: 0 12px 40px rgba(10,22,40,0.1); transform: translateY(-3px); }
.course-thumb { height: 160px; display: flex; align-items: center; justify-content: center; font-size: 48px; position: relative; }
.course-thumb.blue  { background: linear-gradient(135deg, var(--navy2), var(--navy3)); }
.course-thumb.gold  { background: linear-gradient(135deg, #7a4f00, #b87b00); }
.course-thumb.teal  { background: linear-gradient(135deg, #0a4a4a, #0d7070); }
.course-badge { position: absolute; top: 12px; left: 12px; background: var(--gold); color: var(--navy); font-size: 11px; font-weight: 700; padding: 3px 10px; border-radius: 20px; }
.course-body { padding: 1.25rem; }
.course-body h3 { font-size: 16px; font-weight: 600; color: var(--navy); margin-bottom: 6px; line-height: 1.4; }
.course-body p { font-size: 13px; color: var(--muted); line-height: 1.5; margin-bottom: 1rem; }
.course-meta { display: flex; gap: 12px; font-size: 12px; color: var(--muted); margin-bottom: 1rem; }
.course-footer { display: flex; align-items: center; justify-content: space-between; padding-top: 1rem; border-top: 1px solid rgba(0,0,0,0.06); }
.course-price { font-size: 20px; font-weight: 700; color: var(--navy); }
.course-price span { font-size: 13px; font-weight: 400; color: var(--muted); text-decoration: line-through; margin-right: 4px; }
.btn-sm { background: var(--navy); color: var(--white); font-size: 13px; font-weight: 500; padding: 8px 16px; border-radius: 8px; text-decoration: none; transition: all 0.2s; border: none; cursor: pointer; }
.btn-sm:hover { background: var(--navy3); }

/* ============================================================
   BLOG
   ============================================================ */
#blog { background: var(--off); }
.blog-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.blog-card { background: var(--white); border: 1px solid rgba(0,0,0,0.07); border-radius: var(--radius-lg); overflow: hidden; transition: all 0.25s; }
.blog-card:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(0,0,0,0.08); }
.blog-img { height: 140px; display: flex; align-items: center; justify-content: center; font-size: 40px; }
.blog-img.b1 { background: linear-gradient(135deg,#eef2ff,#c7d2fe); }
.blog-img.b2 { background: linear-gradient(135deg,#fdf6e3,#fde68a); }
.blog-img.b3 { background: linear-gradient(135deg,#ecfdf5,#a7f3d0); }
.blog-body { padding: 1.25rem; }
.blog-cat { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--gold); margin-bottom: 6px; }
.blog-body h3 { font-size: 15px; font-weight: 600; color: var(--navy); line-height: 1.4; margin-bottom: 8px; }
.blog-body p { font-size: 13px; color: var(--muted); line-height: 1.5; margin-bottom: 1rem; }
.blog-meta { font-size: 12px; color: var(--muted); }
.read-more { color: var(--gold); font-size: 13px; font-weight: 500; text-decoration: none; }
.read-more:hover { color: var(--navy); }

/* ============================================================
   APPS
   ============================================================ */
#interactive-apps { background: var(--white); }
#ai-apps { background: var(--navy); }
#ai-apps .section-title { color: var(--white); }
#ai-apps .section-sub { color: rgba(255,255,255,0.6); }
#ai-apps .section-tag { background: rgba(201,168,76,0.15); border-color: rgba(201,168,76,0.3); }
.apps-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.app-card { background: var(--off); border: 1px solid rgba(0,0,0,0.07); border-radius: var(--radius-lg); padding: 1.5rem; transition: all 0.25s; }
.app-card:hover { border-color: var(--gold); box-shadow: 0 8px 30px rgba(201,168,76,0.15); transform: translateY(-2px); }
#ai-apps .app-card { background: rgba(255,255,255,0.05); border-color: rgba(201,168,76,0.15); }
#ai-apps .app-card:hover { border-color: rgba(201,168,76,0.5); background: rgba(255,255,255,0.08); }
.app-icon { font-size: 32px; margin-bottom: 1rem; }
.app-card h3 { font-size: 16px; font-weight: 600; color: var(--navy); margin-bottom: 6px; }
#ai-apps .app-card h3 { color: var(--white); }
.app-card p { font-size: 13px; color: var(--muted); line-height: 1.5; margin-bottom: 1rem; }
#ai-apps .app-card p { color: rgba(255,255,255,0.55); }
.app-tag { display: inline-block; font-size: 11px; font-weight: 600; background: var(--gold-light); color: #7a4f00; padding: 3px 10px; border-radius: 20px; }
#ai-apps .app-tag { background: rgba(201,168,76,0.2); color: var(--gold2); }
.try-btn { display: inline-block; margin-top: 10px; font-size: 13px; color: var(--gold); font-weight: 500; text-decoration: none; cursor: pointer; }
.try-btn:hover { color: var(--navy); }
#ai-apps .try-btn:hover { color: var(--gold2); }

/* ============================================================
   EXCEL TEMPLATES
   ============================================================ */
#excel-templates { background: var(--off); }
.excel-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; }
.excel-card { background: var(--white); border: 1px solid rgba(0,0,0,0.07); border-radius: var(--radius-lg); padding: 1.25rem; text-align: center; transition: all 0.25s; }
.excel-card:hover { border-color: var(--gold); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(201,168,76,0.12); }
.excel-icon { font-size: 36px; margin-bottom: 0.75rem; }
.excel-card h3 { font-size: 14px; font-weight: 600; color: var(--navy); margin-bottom: 4px; }
.excel-card p { font-size: 12px; color: var(--muted); margin-bottom: 1rem; }
.excel-price { font-size: 18px; font-weight: 700; color: var(--navy); margin-bottom: 0.75rem; }
.btn-gold { background: var(--gold); color: var(--navy); font-size: 13px; font-weight: 600; padding: 8px 16px; border-radius: 8px; text-decoration: none; display: inline-block; transition: all 0.2s; }
.btn-gold:hover { background: var(--gold2); }

/* ============================================================
   ABOUT
   ============================================================ */
#about { background: var(--white); }
.about-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.about-visual { background: linear-gradient(135deg, var(--navy), var(--navy3)); border-radius: var(--radius-lg); padding: 2.5rem; color: var(--white); }
.about-visual h3 { font-family: 'Playfair Display', serif; font-size: 26px; font-weight: 700; margin-bottom: 1rem; }
.about-visual p { font-size: 15px; color: rgba(255,255,255,0.65); line-height: 1.7; margin-bottom: 1.5rem; }
.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.about-stat { background: rgba(255,255,255,0.06); border: 1px solid rgba(201,168,76,0.2); border-radius: 10px; padding: 1rem; }
.about-stat .n { font-family: 'Playfair Display', serif; font-size: 28px; font-weight: 700; color: var(--gold); }
.about-stat .l { font-size: 12px; color: rgba(255,255,255,0.5); margin-top: 3px; }
.about-content h2 { font-family: 'Playfair Display', serif; font-size: 36px; font-weight: 700; color: var(--navy); margin-bottom: 1rem; line-height: 1.2; }
.about-content h2 span { color: var(--gold); }
.about-content p { font-size: 15px; color: var(--muted); line-height: 1.7; margin-bottom: 1rem; }
.about-list { list-style: none; margin: 1.5rem 0; }
.about-list li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text); margin-bottom: 10px; }
.about-list li::before { content: '✓'; width: 20px; height: 20px; background: var(--gold-light); color: var(--gold); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 700; flex-shrink: 0; }

/* ============================================================
   CONTACT
   ============================================================ */
#contact { background: var(--navy2); }
#contact .section-title { color: var(--white); }
#contact .section-sub { color: rgba(255,255,255,0.6); }
#contact .section-tag { background: rgba(201,168,76,0.15); border-color: rgba(201,168,76,0.3); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 3rem; align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: 20px; }
.contact-item { display: flex; gap: 14px; align-items: flex-start; }
.contact-item-icon { width: 42px; height: 42px; background: rgba(201,168,76,0.15); border: 1px solid rgba(201,168,76,0.25); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
.contact-item-text h4 { font-size: 14px; font-weight: 600; color: var(--white); margin-bottom: 2px; }
.contact-item-text p { font-size: 13px; color: rgba(255,255,255,0.5); }
.contact-form { background: rgba(255,255,255,0.04); border: 1px solid rgba(201,168,76,0.15); border-radius: var(--radius-lg); padding: 2rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.form-group label { font-size: 13px; color: rgba(255,255,255,0.6); }
.form-group input, .form-group select, .form-group textarea {
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px; padding: 10px 14px; font-size: 14px; color: var(--white);
  font-family: 'DM Sans', sans-serif; outline: none; transition: border-color 0.2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: rgba(201,168,76,0.5); }
.form-group select option { background: var(--navy2); color: var(--white); }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-group input::placeholder, .form-group textarea::placeholder { color: rgba(255,255,255,0.25); }

/* ============================================================
   FOOTER
   ============================================================ */
footer.site-footer { background: var(--navy); border-top: 1px solid rgba(201,168,76,0.15); padding: 3rem 2rem 1.5rem; }
.footer-inner { max-width: 1200px; margin: 0 auto; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; margin-bottom: 2rem; }
.footer-brand .logo { display: flex; align-items: center; gap: 10px; margin-bottom: 1rem; text-decoration: none; }
.footer-brand .logo-icon { width: 34px; height: 34px; background: var(--gold); border-radius: 7px; display: flex; align-items: center; justify-content: center; font-family: 'Playfair Display', serif; font-weight: 700; font-size: 16px; color: var(--navy); }
.footer-brand .logo-text { font-family: 'Playfair Display', serif; font-size: 20px; font-weight: 700; color: var(--white); }
.footer-brand p { font-size: 13px; color: rgba(255,255,255,0.45); line-height: 1.6; max-width: 260px; }
.footer-col h4 { font-size: 13px; font-weight: 600; color: var(--gold); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 1rem; }
.footer-col a { display: block; font-size: 13px; color: rgba(255,255,255,0.5); text-decoration: none; margin-bottom: 8px; transition: color 0.2s; }
.footer-col a:hover { color: var(--gold); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 1.5rem; display: flex; justify-content: space-between; align-items: center; }
.footer-bottom p { font-size: 12px; color: rgba(255,255,255,0.3); }
.footer-bottom a { font-size: 12px; color: rgba(255,255,255,0.3); text-decoration: none; }
.footer-bottom a:hover { color: var(--gold); }

/* ============================================================
   LOGIN MODAL (courses only)
   ============================================================ */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(10,22,40,0.8); backdrop-filter: blur(6px);
  z-index: 2000; display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity 0.25s;
}
.modal-overlay.active { opacity: 1; pointer-events: all; }
.modal-box {
  background: var(--white); border-radius: 20px; padding: 2.5rem 2rem;
  max-width: 440px; width: 90%; position: relative;
  transform: translateY(20px); transition: transform 0.25s;
  box-shadow: 0 32px 80px rgba(10,22,40,0.35);
}
.modal-overlay.active .modal-box { transform: translateY(0); }
.modal-close {
  position: absolute; top: 1rem; right: 1rem;
  background: rgba(0,0,0,0.06); border: none; width: 30px; height: 30px;
  border-radius: 50%; cursor: pointer; font-size: 14px; color: var(--muted);
  display: flex; align-items: center; justify-content: center;
}
.modal-close:hover { background: rgba(0,0,0,0.1); }
.modal-icon { font-size: 40px; text-align: center; margin-bottom: 0.75rem; }
.modal-title { font-family: 'Playfair Display', serif; font-size: 24px; font-weight: 700; color: var(--navy); text-align: center; margin-bottom: 0.5rem; }
.modal-desc { font-size: 14px; color: var(--muted); text-align: center; line-height: 1.5; margin-bottom: 1.5rem; }
.modal-desc strong { color: var(--navy); }
.modal-wp-login-btn {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; padding: 13px; background: var(--gold); color: var(--navy);
  font-size: 15px; font-weight: 600; border-radius: 10px; text-decoration: none;
  transition: all 0.2s; font-family: 'DM Sans', sans-serif;
}
.modal-wp-login-btn:hover { background: var(--gold2); transform: translateY(-1px); }
.modal-divider { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 13px; margin: 1rem 0; }
.modal-divider::before, .modal-divider::after { content: ''; flex: 1; height: 1px; background: rgba(0,0,0,0.1); }
.modal-register-btn {
  display: block; width: 100%; padding: 12px; background: transparent;
  border: 1.5px solid rgba(0,0,0,0.15); border-radius: 10px;
  font-size: 14px; font-weight: 500; color: var(--navy); text-align: center;
  text-decoration: none; transition: all 0.2s; font-family: 'DM Sans', sans-serif;
}
.modal-register-btn:hover { border-color: var(--gold); color: var(--gold); }
.modal-note { text-align: center; font-size: 12px; color: var(--muted); margin-top: 1.25rem; line-height: 1.5; }

/* ============================================================
   TOAST
   ============================================================ */
.toast {
  position: fixed; bottom: 2rem; right: 2rem;
  background: var(--navy); color: var(--white); border: 1px solid var(--gold);
  border-radius: 10px; padding: 14px 20px; font-size: 14px;
  z-index: 9999; opacity: 0; transform: translateY(10px);
  transition: all 0.3s; pointer-events: none;
}
.toast.show { opacity: 1; transform: translateY(0); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 2rem; }
  .hero-visual { display: none; }
  .hero-title { font-size: 38px; }
  .features-grid, .courses-grid, .blog-grid, .apps-grid { grid-template-columns: 1fr 1fr; }
  .excel-grid { grid-template-columns: 1fr 1fr; }
  .about-inner { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
}
@media (max-width: 580px) {
  .features-grid, .courses-grid, .blog-grid, .apps-grid, .excel-grid { grid-template-columns: 1fr; }
  .section-title { font-size: 28px; }
  .footer-top { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero-title { font-size: 30px; }
  .hero-stats { gap: 1.25rem; }
}