* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

body {
  background: #f8f9fc;
  color: #333;
}

/* =========================
   HEADER / NAVBAR
========================= */
header {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(8px);
    box-shadow: 0 6px 25px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.1rem 2rem;
}

.logo {
    font-weight: 700;
    font-size: 1.7rem;
    color: var(--primary);
    letter-spacing: 0.3px;
}

.logo span {
    font-weight: 400;
    color: var(--secondary);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2.2rem;
}

nav ul li a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

nav ul li a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: 0.3s;
}

nav ul li a:hover::after {
    width: 100%;
}

.btn {
    padding: 0.55rem 1.6rem;
    background: linear-gradient(135deg, var(--primary), #a71e1e);
    color: #fff;
    border-radius: 25px;
    transition: all 0.3s ease;
    font-weight: 600;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(198,40,40,0.3);
}

.btn-outline {
    padding: 0.55rem 1.6rem;
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-outline:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(198,40,40,0.2);
}

/* HERO */
.courses-hero {
  background: linear-gradient(135deg, #c62828, #ff4b4b);
  color: #fff;
  text-align: center;
  padding: 70px 20px;
}

.courses-hero h1 {
  font-size: 2.5rem;
}

.courses-hero p {
  margin-top: 10px;
  font-size: 1.1rem;
}

/* LAYOUT */
.courses-container {
  display: flex;
  max-width: 1200px;
  margin: 40px auto;
  gap: 30px;
  padding: 0 20px;
  align-items: flex-start;
}

/* SIDEBAR */
.courses-sidebar {
  width: 200px;
  flex: 0 0 200px;
  max-width: 200px;
  background: #fff;
  color: #333;
  border-radius: 12px;
  padding: 25px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
  position: sticky;
  top: 100px;
}

.courses-sidebar h3 {
  margin-bottom: 20px;
  font-size: 1.2rem;
  color: #c62828;
}

.courses-sidebar ul {
  list-style: none;
}

.courses-sidebar li {
  padding: 12px 15px;
  margin-bottom: 8px;
  border-radius: 8px;
  cursor: pointer;
  transition: 0.3s;
  font-size: 0.9rem;
  line-height: 1.2;
}

.courses-sidebar li:hover,
.courses-sidebar li.active {
  background: #c62828;
  color: white;
}

/* COURSES GRID */
.courses-content {
  flex: 1;
  display: block;
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 25px;
}

/* Override any global styles from style.css */
.courses-container .courses-sidebar {
  background: #fff;
}

.courses-container .courses-sidebar li {
  color: #333;
}

.courses-container .courses-sidebar li.active {
  color: #fff;
}

.courses-container .courses-content {
  width: 100%;
}

/* COURSE CARD */
.course-card {
  background: #fff;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 15px 35px rgba(0,0,0,0.1);
  transition: transform 0.3s;
}

.course-card:hover {
  transform: translateY(-6px);
}

.course-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.course-body {
  padding: 20px;
}

.course-category {
  font-size: 0.75rem;
  color: #c62828;
  font-weight: 600;
  text-transform: uppercase;
}

.course-body h4 {
  margin: 8px 0;
  font-size: 1.1rem;
}

.course-body p {
  font-size: 0.9rem;
  color: #555;
  margin-bottom: 15px;
}

.course-footer {
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.course-footer .about-btn {
  text-decoration: none;
  background: #c62828;
  color: #fff;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}

.course-footer .about-btn:hover {
  background: #a71e1e;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(198,40,40,0.25);
}

@media (max-width: 900px) {
  .courses-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 600px) {
  .courses-sidebar {
    display: none;
  }

  .courses-container {
    flex-direction: column;
  }

  .courses-grid {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }
}
/* SEARCH & FILTERS */
.courses-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-bottom: 25px;
  background: #fff;
  padding: 15px;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0,0,0,0.08);
}

.courses-filters input,
.courses-filters select {
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid #ddd;
  font-size: 0.9rem;
  outline: none;
  flex: 1;
  min-width: 180px;
}

.courses-filters input:focus,
.courses-filters select:focus {
  border-color: #c62828;
}