* { box-sizing: border-box; }
:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #182033;
  --muted: #697386;
  --line: #e5e9f2;
  --primary: #3056d3;
  --danger: #d63b3b;
  --success: #14804a;
}
html, body { margin: 0; padding: 0; font-family: Arial, sans-serif; background: var(--bg); color: var(--text); }
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
.container { width: min(1120px, calc(100% - 32px)); margin: 32px auto; }
.center-screen { min-height: 100vh; display: grid; place-items: center; }
.auth-wrap { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 24px; box-shadow: 0 10px 30px rgba(16,24,40,.06); }
.auth-card { width: min(480px, 100%); }
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
label { display: grid; gap: 7px; font-weight: 600; }
input, select { width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 12px 13px; background: #fff; }
input:focus, select:focus { outline: 2px solid rgba(48,86,211,.14); border-color: var(--primary); }
.btn { border: 0; border-radius: 10px; padding: 12px 16px; cursor: pointer; font-weight: 700; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-dark { background: #182033; color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-light { background: #edf1f7; color: #182033; }
.btn-small { padding: 9px 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.muted { color: var(--muted); }
.error { color: var(--danger); background: #fff0f0; border: 1px solid #ffd2d2; padding: 10px 12px; border-radius: 10px; }
.success { color: var(--success); background: #effaf4; border: 1px solid #ccebd9; padding: 10px 12px; border-radius: 10px; }
.nav { background: #fff; border-bottom: 1px solid var(--line); padding: 14px max(16px, calc((100vw - 1120px)/2)); display: flex; align-items: center; justify-content: space-between; gap: 16px; position: sticky; top: 0; z-index: 10; }
.brand { font-weight: 900; font-size: 20px; }
.nav-links { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.title-row { display: flex; justify-content: space-between; gap: 16px; align-items: center; margin-bottom: 22px; }
.stat { font-size: 30px; font-weight: 900; margin-top: 8px; }
.avatar { width: 86px; height: 86px; object-fit: cover; border-radius: 50%; border: 3px solid #fff; box-shadow: 0 0 0 1px var(--line); }
.profile-row { display: flex; align-items: center; gap: 18px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
th { color: var(--muted); font-size: 13px; }
.badge { display: inline-flex; border-radius: 999px; padding: 5px 9px; font-size: 12px; font-weight: 800; background: #edf1f7; }
.badge-active { background: #e8f7ef; color: var(--success); }
.badge-pending { background: #fff5df; color: #8d5b00; }
.badge-danger { background: #fdeaea; color: var(--danger); }
.due-box { border: 1px solid var(--line); border-radius: 14px; padding: 16px; background: #f9fafc; }
.due-box .due-row { display: flex; justify-content: space-between; padding: 6px 0; }
.due-box .due-row.total { border-top: 1px dashed var(--line); margin-top: 6px; padding-top: 10px; font-weight: 800; }
.due-box .due-amount { color: var(--danger); font-weight: 800; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.qr-box { background: white; display: inline-grid; place-items: center; padding: 14px; border: 1px solid var(--line); border-radius: 14px; }
.scanner { width: min(520px, 100%); margin-inline: auto; }
hr { border: 0; border-top: 1px solid var(--line); margin: 20px 0; }

@media (max-width: 760px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .nav { align-items: flex-start; }
  .nav-links { justify-content: flex-end; font-size: 14px; }
  .profile-row { align-items: flex-start; }
}

.inspect-blocker {
  position: fixed;
  inset: 0;
  z-index: 999999;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(11, 18, 32, 0.97);
}
.inspect-blocker-card {
  width: min(520px, 100%);
  border-radius: 18px;
  padding: 28px;
  background: #ffffff;
  color: #182033;
  text-align: center;
  box-shadow: 0 24px 80px rgba(0,0,0,.35);
}
.small-text { font-size: 13px; }

/* Final UI upgrades */
.auth-gradient {
  background:
    radial-gradient(circle at 10% 10%, rgba(48,86,211,.12), transparent 28%),
    radial-gradient(circle at 90% 90%, rgba(20,128,74,.08), transparent 30%),
    var(--bg);
}
.auth-heading { display: flex; align-items: center; gap: 14px; }
.centered-heading { justify-content: center; text-align: left; }
.auth-heading h1 { margin: 0 0 5px; font-size: clamp(26px, 4vw, 34px); }
.auth-heading p { margin: 0; }
.logo-mark {
  flex: 0 0 auto; width: 48px; height: 48px; border-radius: 15px;
  display: grid; place-items: center; font-weight: 900; font-size: 22px;
  color: white; background: linear-gradient(135deg, #2849b8, #4f74f0);
  box-shadow: 0 10px 24px rgba(48,86,211,.25);
}
.login-card { width: min(460px, 100%); }
.register-card { width: min(760px, 100%); }
.form-grid { gap: 16px; }
.auth-footer { text-align: center; margin: 0; }
.btn-large { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; }
.password-wrap { position: relative; }
.password-wrap input { padding-right: 48px; }
.eye-btn {
  position: absolute; right: 7px; top: 50%; transform: translateY(-50%);
  width: 36px; height: 36px; display: grid; place-items: center;
  border: 0; border-radius: 9px; background: transparent; cursor: pointer; color: #667085;
}
.eye-btn:hover { background: #f0f3f9; color: var(--text); }
.eye-btn svg { width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.photo-picker { display: flex; align-items: center; gap: 16px; padding: 14px; border: 1px dashed #cfd7e6; border-radius: 14px; background: #fafbfe; }
.photo-preview { width: 72px; height: 72px; border-radius: 50%; overflow: hidden; background: #e9eef8; display: grid; place-items: center; color: #75809a; font-weight: 800; flex: 0 0 auto; }
.photo-preview img { width: 100%; height: 100%; object-fit: cover; }
.file-btn { display: inline-flex; width: fit-content; cursor: pointer; padding: 9px 12px; border: 1px solid var(--line); border-radius: 9px; background: white; font-size: 14px; }
.file-btn input { display: none; }
.strength-row { display: flex; align-items: center; gap: 10px; margin-top: -8px; }
.strength-bar { flex: 1; height: 6px; background: #e8ecf3; border-radius: 99px; overflow: hidden; }
.strength-bar span { display: block; height: 100%; width: 0; border-radius: inherit; transition: .2s ease; background: #c43d3d; }
.strength-1 span { width: 25%; }
.strength-2 span { width: 50%; background: #d78918; }
.strength-3 span { width: 75%; background: #4a78d0; }
.strength-4 span { width: 100%; background: var(--success); }
.spinner { width: 16px; height: 16px; border: 2px solid rgba(255,255,255,.4); border-top-color: #fff; border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.stat-card-link { transition: transform .15s ease, box-shadow .15s ease; }
.stat-card-link:hover { transform: translateY(-2px); box-shadow: 0 16px 36px rgba(16,24,40,.09); }
.empty-state { text-align: center; padding: 28px; color: var(--muted); }
.modal-backdrop { position: fixed; inset: 0; z-index: 9999; display: grid; place-items: center; padding: 20px; background: rgba(14,22,38,.58); }
.modal { width: min(520px, 100%); max-height: 90vh; overflow: auto; }
.info-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; }
.info-item { background: #f8f9fc; border: 1px solid var(--line); border-radius: 12px; padding: 12px; }
.info-item span { display: block; color: var(--muted); font-size: 12px; margin-bottom: 4px; }

@media (max-width: 620px) {
  .photo-picker { align-items: flex-start; }
  .info-grid { grid-template-columns: 1fr; }
  .register-card { padding: 18px; }
}

/* =====================================
   PUBLIC HOME PAGE
===================================== */

.home-page {
  min-height: 100vh;

  background:
    radial-gradient(
      circle at 10% 10%,
      rgba(36, 87, 255, 0.12),
      transparent 28%
    ),
    radial-gradient(
      circle at 90% 85%,
      rgba(118, 74, 255, 0.08),
      transparent 30%
    ),
    #f5f7fb;

  color: #182230;
}


/* NAVBAR */

.home-navbar {
  width: min(1180px, calc(100% - 30px));

  margin: 16px auto 0;

  padding: 14px 18px;

  display: flex;
  justify-content: space-between;
  align-items: center;

  background: rgba(255, 255, 255, 0.88);

  border: 1px solid #e7eaf0;
  border-radius: 18px;

  backdrop-filter: blur(16px);

  box-shadow:
    0 10px 35px rgba(16, 24, 40, 0.06);

  position: sticky;

  top: 10px;

  z-index: 100;
}


.home-logo {
  font-size: 25px;
  font-weight: 900;

  letter-spacing: -1px;
}


.home-logo span {
  color: #2457ff;
}


.home-nav-buttons {
  display: flex;

  gap: 10px;
}


.home-btn {
  display: inline-flex;

  align-items: center;
  justify-content: center;

  padding: 11px 18px;

  border-radius: 12px;

  font-size: 14px;
  font-weight: 700;

  transition: 0.25s;
}


.home-btn:hover {
  transform: translateY(-2px);
}


.home-login-btn {
  background: white;

  color: #101828;

  border: 1px solid #e7eaf0;
}


.home-register-btn {
  background: #101828;

  color: white;
}


/* HERO */

.home-hero {
  width: min(1180px, calc(100% - 30px));

  margin: 55px auto 30px;

  display: grid;

  grid-template-columns:
    1.05fr 0.95fr;

  gap: 55px;

  align-items: center;

  min-height: 650px;
}


.home-small-title {
  display: inline-block;

  background: #edf2ff;

  color: #3047b5;

  padding: 8px 13px;

  border-radius: 50px;

  font-size: 13px;
  font-weight: 800;

  margin-bottom: 18px;
}


.home-teacher-name {
  font-family:
    Georgia,
    "Times New Roman",
    serif;

  font-size:
    clamp(53px, 7vw, 84px);

  line-height: 0.98;

  letter-spacing: -3px;

  margin-bottom: 22px;
}


.home-teacher-name span {
  color: #2457ff;
}


.home-description {
  max-width: 650px;

  font-size: 19px;

  line-height: 1.7;

  color: #667085;

  margin-bottom: 30px;
}


.home-description strong {
  color: #101828;
}


/* CONTACT BOX */

.home-contact-box {
  display: grid;

  grid-template-columns:
    repeat(2, 1fr);

  gap: 12px;

  max-width: 620px;

  padding: 17px;

  background:
    rgba(255, 255, 255, 0.82);

  border:
    1px solid #e7eaf0;

  border-radius: 20px;

  box-shadow:
    0 16px 40px
    rgba(16, 24, 40, 0.05);
}


.home-contact-item {
  background: white;

  border:
    1px solid #e7eaf0;

  padding: 15px;

  border-radius: 14px;
}


.home-contact-label {
  color: #667085;

  text-transform: uppercase;

  font-size: 11px;

  font-weight: 800;

  letter-spacing: 1px;

  margin-bottom: 6px;
}


.home-contact-value {
  font-size: 15px;

  font-weight: 700;

  word-break: break-word;
}


/* TEACHER IMAGE */

.home-teacher-area {
  position: relative;

  min-height: 620px;

  display: flex;

  align-items: flex-end;
  justify-content: center;
}


.home-teacher-glow {
  position: absolute;

  width: 90%;
  height: 82%;

  bottom: 0;

  border-radius:
    50% 50% 30% 30%;

  background:
    radial-gradient(
      circle,
      rgba(36, 87, 255, 0.17),
      transparent 68%
    );
}


.home-teacher-image {
  position: relative;

  z-index: 2;

  width:
    min(520px, 100%);

  max-height: 630px;

  object-fit: contain;

  object-position: bottom;

  filter:
    drop-shadow(
      0 25px 30px
      rgba(16, 24, 40, 0.20)
    );
}


.home-teacher-tag {
  position: absolute;

  z-index: 3;

  bottom: 28px;
  right: 0;

  padding: 15px 20px;

  background:
    rgba(255, 255, 255, 0.94);

  border:
    1px solid #e7eaf0;

  border-radius: 16px;

  box-shadow:
    0 15px 35px
    rgba(16, 24, 40, 0.12);
}


.home-teacher-tag small {
  display: block;

  color: #667085;

  font-size: 12px;

  margin-bottom: 4px;
}


.home-teacher-tag strong {
  font-size: 17px;
}


/* FEATURES */

.home-features {
  width:
    min(1180px, calc(100% - 30px));

  margin:
    15px auto 70px;

  display: grid;

  grid-template-columns:
    repeat(3, 1fr);

  gap: 16px;
}


.home-feature-card {
  background:
    rgba(255, 255, 255, 0.86);

  border:
    1px solid #e7eaf0;

  border-radius: 20px;

  padding: 25px;

  transition: 0.25s;
}


.home-feature-card:hover {
  transform:
    translateY(-5px);

  box-shadow:
    0 20px 45px
    rgba(16, 24, 40, 0.08);
}


.home-feature-icon {
  width: 48px;
  height: 48px;

  display: grid;

  place-items: center;

  background: #edf2ff;

  border-radius: 14px;

  font-size: 23px;

  margin-bottom: 17px;
}


.home-feature-card h3 {
  font-size: 19px;

  margin-bottom: 9px;
}


.home-feature-card p {
  color: #667085;

  font-size: 14px;

  line-height: 1.65;

  margin-bottom: 15px;
}


.home-feature-link {
  color: #2457ff;

  font-weight: 800;

  font-size: 14px;
}


/* FOOTER */

.home-footer {
  width:
    min(1180px, calc(100% - 30px));

  margin:
    0 auto 25px;

  padding: 20px;

  border-top:
    1px solid #e7eaf0;

  display: flex;

  justify-content:
    space-between;

  align-items: center;

  gap: 20px;

  color: #667085;

  font-size: 13px;
}


/* MOBILE */

@media (max-width: 900px) {

  .home-hero {
    grid-template-columns: 1fr;

    min-height: auto;

    margin-top: 40px;

    gap: 25px;
  }


  .home-hero-content {
    order: 1;
  }


  .home-teacher-area {
    order: 2;

    min-height: 520px;
  }


  .home-features {
    grid-template-columns: 1fr;
  }

}


@media (max-width: 600px) {

  .home-navbar {
    width:
      calc(100% - 20px);

    padding: 12px;
  }


  .home-logo {
    font-size: 20px;
  }


  .home-btn {
    padding:
      9px 13px;

    font-size: 12px;
  }


  .home-hero {
    width:
      calc(100% - 24px);
  }


  .home-teacher-name {
    font-size: 49px;

    letter-spacing: -2px;
  }


  .home-description {
    font-size: 16px;
  }


  .home-contact-box {
    grid-template-columns: 1fr;
  }


  .home-teacher-area {
    min-height: 450px;
  }


  .home-teacher-tag {
    right: 5px;

    bottom: 10px;
  }


  .home-features {
    width:
      calc(100% - 24px);
  }


  .home-footer {
    width:
      calc(100% - 24px);

    flex-direction: column;

    text-align: center;
  }

}

/* =========================
   GLOBAL FOOTER
========================= */

.site-layout {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-content {
  flex: 1;
}

.site-footer {
  width: min(1180px, calc(100% - 30px));

  margin: 35px auto 20px;

  padding: 22px 15px;

  border-top: 1px solid var(--line);

  text-align: center;

  color: #667085;

  font-size: 13px;
}

.footer-main {
  color: #182230;

  font-weight: 700;

  margin-bottom: 6px;
}

.footer-tagline {
  margin-bottom: 8px;
}

.footer-developer {
  font-size: 12px;
}

.footer-developer a {
  color: #2457ff;

  font-weight: 800;

  text-decoration: none;
}

.footer-developer a:hover {
  text-decoration: underline;
}

.home-social-links {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 18px;
  margin-top: 22px;
}

.home-social-links a {
  width: 46px;
  height: 46px;

  display: flex;
  align-items: center;
  justify-content: center;

  text-decoration: none;

  flex-shrink: 0;

  transition: transform 0.2s ease, opacity 0.2s ease;
}

.home-social-links a:hover {
  transform: translateY(-3px);
  opacity: 0.85;
}


/* Base icon settings */
.home-social-icon {
  object-fit: contain;
  display: block;
}


/* WhatsApp */
.home-social-links a:nth-child(1) .home-social-icon {
  width: 42px;
  height: 42px;
}


/* YouTube */
.home-social-links a:nth-child(2) .home-social-icon {
  width: 63px;
  height: 63px;
}


/* Facebook */
.home-social-links a:nth-child(3) .home-social-icon {
  width: 41px;
  height: 41px;
}


/* TikTok */
.home-social-links a:nth-child(4) .home-social-icon {
  width: 51px;
  height: 51px;
}