/* ============================================================
   IDEAS EduTech — Main Stylesheet
   ideasedutech.com
   ============================================================ */

/* ── Design tokens ──────────────────────────────────────────── */
:root {
  --green-deep:   #1a5c35;
  --green-mid:    #228B22;
  --green-bright: #36C055;
  --green-light:  #d4edda;
  --green-pale:   #f0faf3;
  --gold:         #c9a227;
  --ink:          #111a12;
  --ink-soft:     #2e3d2f;
  --muted:        #5c6b5d;
  --line:         #d6e8d8;
  --white:        #ffffff;
  --surface:      #f7fbf7;
  --radius:       14px;
  --radius-lg:    24px;
  --shadow-sm:    0 2px 8px rgba(26,92,53,.10);
  --shadow-md:    0 8px 32px rgba(26,92,53,.13);
  --shadow-lg:    0 24px 64px rgba(26,92,53,.18);
  --font-head:    'Playfair Display', Georgia, serif;
  --font-body:    'DM Sans', sans-serif;
  --transition:   0.3s cubic-bezier(.4,0,.2,1);
}

/* ── Reset & base ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--white);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.65;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ── Navbar ─────────────────────────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 5vw; height: 68px;
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow var(--transition);
}
.nav.scrolled { box-shadow: var(--shadow-md); }
.nav-logo { display: flex; align-items: center; gap: 12px; }
.nav-logo img { height: 38px; width: auto; }
.nav-logo-text {
  font-family: var(--font-head); font-weight: 800; font-size: 1.1rem;
  color: var(--green-deep); line-height: 1.15; letter-spacing: -0.01em;
}
.nav-logo-text span {
  display: block; font-weight: 400; font-size: .72rem;
  color: var(--muted); letter-spacing: .04em; text-transform: uppercase;
}
.nav-links { display: flex; gap: 2rem; align-items: center; list-style: none; }
.nav-links a { font-size: .95rem; font-weight: 500; color: var(--ink-soft); transition: color var(--transition); }
.nav-links a:hover { color: var(--green-mid); }
.nav-cta {
  background: var(--green-deep); color: var(--white) !important;
  padding: .52rem 1.4rem; border-radius: 8px;
  font-weight: 600 !important; font-size: .95rem !important;
  transition: background var(--transition), transform var(--transition) !important;
}
.nav-cta:hover { background: var(--green-mid) !important; transform: translateY(-1px); }
.hamburger { display: none; background: none; border: none; cursor: pointer; font-size: 1.4rem; color: var(--green-deep); }

/* ── Hero ───────────────────────────────────────────────────── */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  padding: 100px 5vw 80px; position: relative; overflow: hidden;
  background: linear-gradient(135deg, #0d3320 0%, var(--green-deep) 55%, #1e6b40 100%);
}
.hero-bg {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 60% 55% at 80% 40%, rgba(54,192,85,.18) 0%, transparent 70%),
    radial-gradient(ellipse 40% 50% at 10% 80%, rgba(201,162,39,.10) 0%, transparent 60%);
}
.hero-grid {
  position: absolute; inset: 0; pointer-events: none; opacity: .04;
  background-image: linear-gradient(var(--white) 1px, transparent 1px), linear-gradient(90deg, var(--white) 1px, transparent 1px);
  background-size: 48px 48px;
}
.hero-content { position: relative; z-index: 2; max-width: 780px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: .5rem;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22);
  color: #a8f0bc; font-size: .82rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  padding: .38rem 1rem; border-radius: 100px; margin-bottom: 2rem;
  animation: fadeUp .7s .1s both;
}
.hero-badge i { font-size: .75rem; }
.hero-title {
  font-family: var(--font-head); font-size: clamp(2.7rem, 5.6vw, 4.2rem);
  font-weight: 900; line-height: 1.2; color: var(--white); margin-bottom: 1.4rem;
  letter-spacing: -0.02em;
  animation: fadeUp .7s .2s both;
}
.hero-title em {
  font-style: normal;
  background: linear-gradient(90deg, #6ee89a, var(--gold));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-sub {
  font-size: 1.15rem; font-weight: 300; color: rgba(255,255,255,.78);
  max-width: 520px; margin-bottom: 2.8rem; animation: fadeUp .7s .32s both;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; animation: fadeUp .7s .44s both; }
.btn-primary {
  display: inline-flex; align-items: center; gap: .55rem;
  background: var(--green-bright); color: var(--ink); font-weight: 700; font-size: 1rem;
  padding: .85rem 2rem; border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(54,192,85,.35);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(54,192,85,.45); background: #4de370; }
.btn-outline {
  display: inline-flex; align-items: center; gap: .55rem; background: transparent;
  border: 2px solid rgba(255,255,255,.38); color: var(--white); font-weight: 600; font-size: 1rem;
  padding: .83rem 1.8rem; border-radius: var(--radius);
  transition: border-color var(--transition), background var(--transition);
}
.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,.08); }
.hero-visual {
  position: absolute; right: 5vw; top: 50%; transform: translateY(-50%);
  width: min(440px, 42vw); z-index: 2; animation: floatIn .9s .5s both;
}
.hero-card {
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.15);
  backdrop-filter: blur(16px); border-radius: var(--radius-lg); padding: 2rem; box-shadow: var(--shadow-lg);
}
.hero-card-title {
  font-family: var(--font-head); font-weight: 700; font-size: 1rem;
  color: rgba(255,255,255,.6); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 1.4rem;
}
.stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.stat-item {
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius); padding: 1rem 1.1rem;
}
.stat-item .num { font-family: var(--font-head); font-weight: 800; font-size: 1.8rem; color: var(--green-bright); line-height: 1; }
.stat-item .lbl { font-size: .82rem; color: rgba(255,255,255,.55); margin-top: .25rem; }
.portal-link-preview {
  display: flex; align-items: center; gap: .8rem;
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12);
  border-radius: 10px; padding: .85rem 1rem; cursor: pointer; transition: background var(--transition);
}
.portal-link-preview:hover { background: rgba(255,255,255,.12); }
.portal-link-preview i { color: var(--green-bright); font-size: 1.1rem; }
.portal-link-preview span { color: rgba(255,255,255,.8); font-size: .92rem; font-weight: 500; }
.portal-link-preview .arrow { margin-left: auto; color: rgba(255,255,255,.35); }

/* ── Section commons ────────────────────────────────────────── */
section { padding: 100px 5vw; }
.section-label {
  display: inline-block; font-size: .78rem; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase; color: var(--green-mid); margin-bottom: .8rem;
}
.section-title {
  font-family: var(--font-head); font-weight: 800; font-size: clamp(1.85rem, 3.5vw, 2.75rem);
  line-height: 1.18; color: var(--ink); margin-bottom: 1rem; letter-spacing: -0.02em;
}
.section-sub { font-size: 1.05rem; color: var(--muted); max-width: 560px; line-height: 1.7; }
.section-header { margin-bottom: 3.5rem; }

/* ── About ──────────────────────────────────────────────────── */
.about { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.about-inner { display: grid; grid-template-columns: 2fr 1fr; gap: 5rem; align-items: center; }
.about-text p { color: var(--muted); margin-bottom: 1rem; }
.about-visual { display: grid; grid-template-columns: 1fr; gap: 3rem; }
.about-tile {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.6rem 1.4rem; box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.about-tile:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.about-tile i { font-size: 1.6rem; color: var(--green-mid); margin-bottom: .8rem; display: block; }
.about-tile h4 { font-family: var(--font-head); font-weight: 700; font-size: 1rem; margin-bottom: .4rem; }
.about-tile p { font-size: .88rem; color: var(--muted); line-height: 1.55; }

/* ── Features ───────────────────────────────────────────────── */
.features { background: var(--white); }
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.feature-card {
  border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 2rem 1.8rem;
  background: var(--white); position: relative; overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--green-mid), var(--green-bright));
  opacity: 0; transition: opacity var(--transition);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--green-light); }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 52px; height: 52px; border-radius: 14px; background: var(--green-pale);
  display: flex; align-items: center; justify-content: center; margin-bottom: 1.2rem;
}
.feature-icon i { font-size: 1.35rem; color: var(--green-mid); }
.feature-card h3 { font-family: var(--font-head); font-weight: 700; font-size: 1.05rem; margin-bottom: .6rem; letter-spacing: -0.01em; }
.feature-card p { font-size: .93rem; color: var(--muted); line-height: 1.6; }

/* ── Portal Access ──────────────────────────────────────────── */
.portals {
  background: linear-gradient(160deg, var(--green-deep) 0%, #0e2e1a 100%);
  position: relative; overflow: hidden;
}
.portals::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 60% at 70% 50%, rgba(54,192,85,.12) 0%, transparent 70%);
  pointer-events: none;
}
.portals .section-label { color: #7ee89a; }
.portals .section-title { color: var(--white); }
.portals .section-sub { color: rgba(255,255,255,.6); }
.portals-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.portal-card {
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-lg); padding: 2.2rem 2rem; backdrop-filter: blur(8px);
  display: flex; flex-direction: column;
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
}
.portal-card:hover { transform: translateY(-6px); background: rgba(255,255,255,.12); box-shadow: 0 16px 48px rgba(0,0,0,.3); }
.portal-card-icon {
  width: 56px; height: 56px; border-radius: 16px; background: rgba(255,255,255,.1);
  display: flex; align-items: center; justify-content: center; margin-bottom: 1.4rem;
}
.portal-card-icon i { font-size: 1.5rem; color: var(--green-bright); }
.portal-card h3 { font-family: var(--font-head); font-weight: 700; font-size: 1.12rem; color: var(--white); margin-bottom: .6rem; letter-spacing: -0.01em; }
.portal-card p { font-size: .92rem; color: rgba(255,255,255,.58); line-height: 1.6; flex: 1; margin-bottom: 1.8rem; }
.portal-card .btn-portal {
  display: inline-flex; align-items: center; gap: .55rem;
  background: var(--green-bright); color: var(--ink); font-weight: 700; font-size: .93rem;
  padding: .72rem 1.5rem; border-radius: 10px; width: fit-content;
  transition: transform var(--transition), background var(--transition);
}
.portal-card .btn-portal:hover { transform: translateX(4px); background: #4de370; }

/* ── How it Works ───────────────────────────────────────────── */
.how { background: var(--surface); }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; position: relative; }
.steps::after {
  content: ''; position: absolute; top: 28px; left: 12%; right: 12%; height: 2px;
  background: linear-gradient(90deg, var(--green-light), var(--green-mid), var(--green-light));
  z-index: 0;
}
.step { text-align: center; position: relative; z-index: 1; }
.step-num {
  width: 56px; height: 56px; border-radius: 50%; background: var(--green-deep);
  color: var(--white); font-family: var(--font-head); font-weight: 800; font-size: 1.2rem;
  display: flex; align-items: center; justify-content: center; margin: 0 auto 1.2rem;
  box-shadow: 0 4px 16px rgba(26,92,53,.3);
}
.step h4 { font-family: var(--font-head); font-weight: 700; font-size: .98rem; margin-bottom: .5rem; letter-spacing: -0.01em; }
.step p { font-size: .88rem; color: var(--muted); line-height: 1.55; }

/* ── Contact ─────────────────────────────────────────────────── */
.contact { background: var(--white); }
.contact-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: start; }
.contact-info h3 { font-family: var(--font-head); font-weight: 700; font-size: 1.45rem; margin-bottom: 1rem; letter-spacing: -0.02em; }
.contact-info p { color: var(--muted); margin-bottom: 2rem; }
.contact-items { display: flex; flex-direction: column; gap: 1.1rem; }
.contact-item { display: flex; align-items: flex-start; gap: 1rem; }
.contact-item-icon {
  width: 42px; height: 42px; border-radius: 10px; background: var(--green-pale);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.contact-item-icon i { color: var(--green-mid); font-size: 1rem; }
.contact-item-body .label { font-size: .8rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.contact-item-body .value { font-size: .97rem; font-weight: 500; color: var(--ink); }
.contact-form { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 2.4rem; }
.form-group { margin-bottom: 1.3rem; }
.form-group label { display: block; font-size: .87rem; font-weight: 600; color: var(--ink-soft); margin-bottom: .45rem; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: .78rem 1rem; border: 1.5px solid var(--line); border-radius: 10px;
  font-family: var(--font-body); font-size: .95rem; color: var(--ink); background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition); outline: none;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--green-mid); box-shadow: 0 0 0 3px rgba(34,139,34,.12);
}
.form-group textarea { resize: vertical; min-height: 110px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.btn-submit {
  width: 100%; padding: .9rem; background: var(--green-deep);
  color: var(--white); font-family: var(--font-head); font-weight: 700; font-size: 1rem;
  border: none; border-radius: 10px; cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: .6rem;
  transition: background var(--transition), transform var(--transition);
}
.btn-submit:hover { background: var(--green-mid); transform: translateY(-2px); }

/* ── Footer ──────────────────────────────────────────────────── */
footer { background: var(--ink); color: rgba(255,255,255,.65); padding: 64px 5vw 32px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; margin-bottom: 3rem; }
.footer-brand img { height: 40px; margin-bottom: 1rem; filter: brightness(0) invert(1); }
.footer-brand p { font-size: .92rem; line-height: 1.65; max-width: 280px; }
.footer-col h5 {
  font-family: var(--font-head); font-weight: 700; font-size: .9rem;
  color: var(--white); text-transform: uppercase; letter-spacing: .04em; margin-bottom: 1.1rem;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: .65rem; }
.footer-col ul a { font-size: .9rem; transition: color var(--transition); }
.footer-col ul a:hover { color: var(--green-bright); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1); padding-top: 1.8rem;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 1rem; font-size: .86rem;
}
.footer-bottom a { color: var(--green-bright); }
.social-row { display: flex; gap: .8rem; }
.social-row a {
  width: 36px; height: 36px; border-radius: 8px; background: rgba(255,255,255,.08);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,.6); font-size: .95rem;
  transition: background var(--transition), color var(--transition);
}
.social-row a:hover { background: var(--green-mid); color: var(--white); }

/* ── Animations ──────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes floatIn {
  from { opacity: 0; transform: translateY(-50%) translateX(40px); }
  to   { opacity: 1; transform: translateY(-50%) translateX(0); }
}
.reveal {
  opacity: 0; transform: translateY(32px);
  transition: opacity .65s cubic-bezier(.4,0,.2,1), transform .65s cubic-bezier(.4,0,.2,1);
}
.reveal.visible { opacity: 1; transform: none; }

/* ── Mobile nav ──────────────────────────────────────────────── */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .hamburger { display: block; }
  .nav-links.open {
    display: flex; flex-direction: column; gap: 0;
    position: fixed; top: 68px; left: 0; right: 0;
    background: var(--white); border-bottom: 1px solid var(--line);
    padding: 1rem 5vw 1.5rem; box-shadow: var(--shadow-md); z-index: 99;
  }
  .nav-links.open li { padding: .55rem 0; border-bottom: 1px solid var(--line); }
  .nav-links.open li:last-child { border: none; padding-top: 1rem; }
  .nav-cta { display: inline-block; width: 100%; text-align: center; }
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 1100px) { .hero-visual { display: none; } }
@media (max-width: 768px) {
  .about-inner, .contact-inner { grid-template-columns: 1fr; gap: 3rem; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .portals-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .steps::after { display: none; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .features-grid, .footer-inner, .steps { grid-template-columns: 1fr; }
  .hero-title { font-size: 2.2rem; }
}