:root {
  --main: #1f3b57;
  --blue: #2f80ed;
  --bg: #f5f5f5;
  --white: #ffffff;
  --text: #222222;
  --gray: #666666;
  --border: #dddddd;
  --red: #b00020;
  --green: #176b32;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: Arial, sans-serif;
  line-height: 1.5;
}

a {
  text-decoration: none;
}

.header {
  background-color: var(--white);
  padding: 15px 40px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.logo {
  color: var(--text);
  font-size: 22px;
  font-weight: bold;
}

.menu {
  display: flex;
  gap: 18px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  flex-wrap: wrap;
  justify-content: center;
}

.menu a,
.login a {
  color: var(--text);
  font-size: 15px;
}

.menu a:hover,
.login a:hover {
  color: var(--blue);
}

.login {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-left: auto;
}

.signup {
  background-color: var(--blue);
  padding: 7px 12px;
  border-radius: 4px;
  color: var(--white) !important;
}

.hero {
  background-color: var(--main);
  padding: 55px 40px;
  display: flex;
  justify-content: space-between;
  gap: 30px;
  align-items: center;
}

.hero-left {
  width: 55%;
}

.hero-left h1 {
  font-size: 36px;
  color: var(--white);
  margin-bottom: 15px;
}

.hero-left p {
  color: var(--white);
  font-size: 17px;
  margin-bottom: 25px;
}

.btns {
  display: flex;
  gap: 12px;
}

.btn,
.form-btn {
  background-color: var(--blue);
  color: var(--white) !important;
  padding: 10px 18px;
  border-radius: 4px;
  display: inline-block;
  border: none;
  cursor: pointer;
  font-size: 15px;
}

.btn:hover,
.form-btn:hover {
  background-color: #1c6ed1;
  color: var(--white) !important;
}

.btn2 {
  border: 1px solid var(--blue);
  color: var(--blue);
  padding: 10px 18px;
  border-radius: 4px;
  display: inline-block;
}

.hero-right {
  width: 320px;
  background-color: #f0f4f8;
  padding: 25px;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.hero-right h3 {
  color: var(--main);
  margin-bottom: 10px;
}

.hero-right p {
  color: var(--gray);
  margin-bottom: 15px;
}

.info {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.info span {
  background-color: var(--white);
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--main);
}

.st-slider {
  background-color: var(--white);
  padding: 50px 40px;
}

.title {
  text-align: center;
  margin-bottom: 30px;
}

.title h2 {
  color: var(--main);
  font-size: 28px;
  margin-bottom: 8px;
}

.title p {
  color: var(--gray);
}

.st-cards {
  display: flex;
  gap: 20px;
  padding: 10px 70px 30px;
}

.st-card {
  background-color: #f5f5f5;
  border: 1px solid var(--border);
  padding: 22px;
  border-radius: 5px;
  width: 33.33%;
  min-height: 160px;
}

.st-card h3,
.why-box h3 {
  color: var(--main);
  font-size: 22px;
  margin-bottom: 10px;
  text-align: center;
  position: relative;
  top: 50%;
  transform: translateY(-50%);
}

.st-card p {
  color: var(--gray);
  margin: 0;
  text-align: center;
}

.st-slider .carousel-control-prev,
.st-slider .carousel-control-next {
  width: 45px;
}

.st-slider .carousel-control-prev-icon,
.st-slider .carousel-control-next-icon {
  background-color: var(--main);
  border-radius: 4px;
  padding: 18px;
}

.courses,
.prices,
.why,
.teachers {
  padding: 50px 40px;
}

.boxes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.price-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.why-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.teacher-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.box,
.price-box,
.why-box,
.teacher,
.dash-box {
  background-color: var(--white);
  border: 1px solid var(--border);
  padding: 20px;
  border-radius: 5px;
}

.box {
  display: grid;
  align-content: space-between;
}

.box h3,
.price-box h3,
.why-box h3,
.teacher h3,
.dash-box h3 {
  color: var(--main);
  margin-bottom: 10px;
}

.box p,
.price-box p,
.why-box p,
.teacher p,
.dash-box p {
  color: var(--gray);
  margin-bottom: 12px;
}

.box span,
.dash-box span {
  display: block;
  color: var(--blue);
  font-weight: bold;
  margin-bottom: 10px;
}

.box a,
.more a {
  color: var(--blue);
  font-weight: bold;
}

.box-img,
.dash-box img {
  width: 100%;
  height: 140px;
  object-fit: contain;
  margin-bottom: 12px;
}

.price-box h4 {
  color: var(--blue);
  font-size: 22px;
}

.more {
  text-align: center;
  margin-top: 25px;
}

.teacher {
  text-align: center;
}

.teacher-photo {
  width: 90px;
  height: 90px;
  object-fit: contain;
  border-radius: 50%;
  margin-bottom: 12px;
}

.circle {
  width: 60px;
  height: 60px;
  background-color: var(--main);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto 12px;
  font-size: 24px;
  font-weight: bold;
}

.join {
  background-color: var(--main);
  color: var(--white);
  text-align: center;
  padding: 50px 30px;
}

.join h2 {
  font-size: 28px;
  margin-bottom: 10px;
}

.join p {
  margin-bottom: 20px;
}

.page-head {
  background-color: var(--main);
  text-align: center;
  padding: 45px 20px;
  border-bottom: 1px solid var(--border);
}

.page-head h1 {
  color: var(--white);
  font-size: 34px;
  margin-bottom: 10px;
}

.page-head p {
  color: var(--white);
}

.courses-page,
.instructors-page,
.table-area,
.prices-page,
.contact-page,
.dash-page,
.admin-page {
  padding: 45px 40px;
}

.course-row {
  background-color: var(--white);
  border: 1px solid var(--border);
  padding: 25px;
  margin-bottom: 22px;
  display: flex;
  justify-content: space-between;
  gap: 25px;
  border-radius: 5px;
}

.course-info {
  width: 75%;
}

.course-info h2 {
  color: var(--main);
  margin-bottom: 12px;
}

.course-info p {
  color: var(--gray);
  margin-bottom: 15px;
}

.course-info ul {
  margin-left: 20px;
  margin-bottom: 18px;
  color: var(--text);
}

.course-info li {
  margin-bottom: 6px;
}

.course-img {
  width: 180px;
  height: 140px;
  background-color: #f0f4f8;
  border: 1px solid var(--border);
  display: flex;
  justify-content: center;
  align-items: center;
}

.course-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.course-img p,
.instructor-img p {
  color: var(--gray);
}

.instructor-box {
  background-color: var(--white);
  border: 1px solid var(--border);
  padding: 22px;
  margin-bottom: 20px;
  display: flex;
  gap: 25px;
  align-items: center;
  border-radius: 5px;
}

.instructor-img {
  width: 160px;
  height: 160px;
  border: 1px solid var(--border);
  background-color: #eeeeee;
  flex-shrink: 0;
}

.instructor-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.instructor-text h2 {
  color: var(--main);
  margin-bottom: 5px;
}

.instructor-text h4 {
  color: var(--blue);
  margin-bottom: 12px;
  font-weight: normal;
}

.instructor-text p {
  color: var(--gray);
}

.table-box {
  overflow-x: auto;
  background-color: var(--white);
  border: 1px solid var(--border);
  padding: 15px;
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 850px;
}

.schedule-table th,
.schedule-table td {
  border: 1px solid var(--border);
  padding: 12px;
  text-align: center;
  font-size: 14px;
}

.schedule-table th {
  background-color: var(--main);
  color: var(--white);
}

.schedule-table td {
  background-color: var(--white);
}

.contact-page {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.contact-info,
.contact-form,
.form-box,
.admin-form,
.admin-table {
  background-color: var(--white);
  border: 1px solid var(--border);
  padding: 25px;
  border-radius: 5px;
}

.contact-info h2,
.contact-form h2,
.form-box h2,
.admin-form h2,
.admin-table h2 {
  color: var(--main);
  margin-bottom: 15px;
}

.contact-info p,
.contact-line a {
  color: var(--gray);
}

.contact-line {
  margin-bottom: 15px;
}

.contact-line h3 {
  color: var(--main);
  margin-bottom: 4px;
  font-size: 17px;
}

.input-box {
  margin-bottom: 15px;
}

.input-box label {
  display: block;
  margin-bottom: 6px;
  color: var(--main);
}

.input-box input,
.input-box textarea,
.input-box select {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--border);
  outline: none;
  font-family: Arial, sans-serif;
  background-color: var(--white);
}

.input-box textarea {
  height: 130px;
  resize: none;
}

.form-page {
  padding: 45px 20px;
}

.form-box {
  max-width: 450px;
  margin: auto;
}

.form-box h2 {
  text-align: center;
}

.form-link {
  margin-top: 15px;
  text-align: center;
  color: var(--gray);
}

.form-link a {
  color: var(--blue);
}

.msg,
.good-msg {
  padding: 12px;
  margin-bottom: 20px;
  border-radius: 4px;
}

.good-msg,
.success-msg {
  background-color: #e9f8ee !important;
  color: var(--green) !important;
  border: 1px solid #bde5c8 !important;
}

.msg,
.error-msg {
  background-color: #ffecec !important;
  color: var(--red) !important;
  border: 1px solid #ffb3b3 !important;
}

.dash-part {
  margin-bottom: 35px;
}

.dash-part h2 {
  color: var(--main);
  margin-bottom: 20px;
}

.dash-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.logout-area {
  text-align: center;
}

.admin-top {
  background-color: var(--main);
  color: var(--white);
  padding: 35px 40px;
  text-align: center;
}

.admin-top h1 {
  margin-bottom: 8px;
}

.admin-links {
  max-width: 700px;
  margin: auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.admin-links a {
  background-color: var(--white);
  border: 1px solid var(--border);
  padding: 20px;
  color: var(--main);
  text-align: center;
  border-radius: 5px;
}

.admin-links a:hover {
  background-color: var(--bg);
}

.admin-form,
.admin-table {
  margin-bottom: 30px;
}

.back-link {
  margin-bottom: 20px;
}

.back-link a {
  color: var(--blue);
  font-weight: bold;
}

.small-img {
  width: 80px;
  height: 55px;
  object-fit: contain;
}

.edit-link {
  color: var(--blue);
  font-weight: bold;
  margin-right: 10px;
}

.delete-link {
  color: var(--red);
  font-weight: bold;
}

.edit-img {
  width: 150px;
  height: 100px;
  object-fit: contain;
  border: 1px solid var(--border);
}

.footer {
  background-color: #172b3f;
  color: var(--white);
  padding: 35px 40px;
  display: grid;
  grid-template-columns: 2fr 1fr 2fr;
  gap: 25px;
}

.foot-box h3 {
  margin-bottom: 12px;
}

.foot-box p,
.foot-box a {
  color: #dddddd;
  display: block;
  margin-bottom: 7px;
  font-size: 14px;
}
html,
body {
  max-width: 100%;
  overflow-x: hidden;
}

img {
  max-width: 100%;
}

iframe {
  max-width: 100%;
}

.foot-box iframe {
  width: 100%;
  max-width: 400px;
  height: 250px;
}

.social,
.sm-links {
  display: flex;
  gap: 12px;
  margin-top: 10px;
}


@media (max-width: 900px) {
  .header {
    flex-direction: column;
    gap: 12px;
    padding: 15px 20px;
  }

  .menu {
    position: static;
    transform: none;
    flex-wrap: wrap;
    justify-content: center;
  }

  .login {
    margin-left: 0;
  }

  .hero {
    flex-direction: column;
    padding: 40px 20px;
  }

  .hero-left {
    width: 100%;
  }

  .hero-left h1 {
    font-size: 30px;
  }

  .hero-right {
    width: 100%;
  }

  .st-slider {
    padding: 40px 20px;
  }

  .st-cards {
    padding: 10px 50px 30px;
  }

  .st-card {
    width: 100%;
  }

  .courses,
  .prices,
  .why,
  .teachers,
  .courses-page,
  .instructors-page,
  .table-area,
  .prices-page,
  .contact-page,
  .dash-page,
  .admin-page {
    padding: 35px 20px;
  }

  .boxes,
  .price-list,
  .why-list,
  .teacher-list,
  .dash-list,
  .admin-links {
    grid-template-columns: 1fr;
  }

  .course-row,
  .instructor-box {
    flex-direction: column;
  }

  .course-info {
    width: 100%;
  }

  .course-img,
  .instructor-img {
    width: 100%;
    height: 200px;
  }

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

  .footer {
    grid-template-columns: 1fr;
    padding: 30px 20px;
  }
}