/* =============================
   Base Reset & Global Styles
============================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: #f9fafe;
  color: #333;
  line-height: 1.6;
}

/* =============================
   Container
============================= */
.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}

/* =============================
   Header / Navigation
============================= */
header {
  background-color: #ffffff;
  border-bottom: 1px solid #e5e5e5;
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  max-width: 120px;
  height: auto;
  display: inline-block;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  text-decoration: none;
  color: #333;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #4a90e2;
}

/* =============================
   Hero Section
============================= */
.hero {
  background: linear-gradient(to bottom right, #4a90e2, #7fb3f0);
  color: #fff;
  padding: 4rem 0;
  text-align: center;
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

.hero-buttons .btn {
  margin: 0 0.5rem;
}

/* =============================
   Buttons
============================= */
.btn {
  display: inline-block;
  padding: 0.65em 1.5em;
  background: linear-gradient(90deg, #4a90e2 0%, #357ab8 100%);
  color: #fff;
  border: none;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  box-shadow: 0 2px 8px rgba(74, 144, 226, 0.08);
  transition: background 0.2s, box-shadow 0.2s, transform 0.1s;
  margin-top: 0.75em;
  cursor: pointer;
}

.btn.primary {
  background-color: #fff;
  color: #4a90e2;
}

.btn.secondary {
  background: linear-gradient(90deg, #6c757d 0%, #495057 100%);
  color: #fff;
}

.btn:hover,
.btn.secondary:hover {
  background: linear-gradient(90deg, #357ab8 0%, #4a90e2 100%);
  box-shadow: 0 4px 16px rgba(74, 144, 226, 0.15);
  transform: translateY(-2px) scale(1.03);
}

/* =============================
   Categories Section
============================= */
.categories {
  padding: 4rem 0;
  background-color: #f3f6fb;
  text-align: center;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.categories h3 {
  width: 100%;
  font-size: 2rem;
  margin-bottom: 2rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.5rem;
  width: 100%;
}

.card {
  background-color: #fff;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  font-weight: 600;
  color: #4a4a4a;
  transition: transform 0.2s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.category-btn {
  padding: 0.5rem 1.25rem;
  background-color: #e0e7ff;
  border: none;
  border-radius: 20px;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.3s;
}

.category-btn.active,
.category-btn:hover {
  background-color: #4a90e2;
  color: white;
}

/* =============================
   Why Section
============================= */
.why {
  padding: 4rem 0;
  background-color: #ffffff;
  text-align: center;
}

.why h3 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.why p {
  font-size: 1.1rem;
  max-width: 700px;
  margin: 0 auto;
}

/* =============================
   Professionals Section
============================= */
.professionals-grid {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 2rem;
}

.professional-card {
  background: #f5f7fa;
  padding: 1.5rem;
  border-radius: 12px;
  text-align: center;
  width: 250px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.professional-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
}

.request-btn {
  margin-top: 1rem;
  background-color: #4a90e2;
  color: white;
  border: none;
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
}

.request-btn:hover {
  background-color: #326fc1;
}

/* =============================
   Form Section
============================= */
.form-section {
  padding: 3rem 0;
  background-color: #f9fafe;
  text-align: left;
}

form {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

label {
  font-weight: 600;
}

input,
textarea,
select {
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid #ccc;
  font-size: 1rem;
  width: 100%;
}

.success-msg {
  margin-top: 1rem;
  font-weight: bold;
}

/* =============================
   Search Bar
============================= */
.search-bar {
  padding: 0.75rem 1rem;
  font-size: 1rem;
  width: 100%;
  max-width: 500px;
  margin: 2rem auto;
  display: block;
  border-radius: 8px;
  border: 1px solid #ccc;
}

/* =============================
   Modal / Pop-up
============================= */
.help-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.modal-content {
  background: white;
  padding: 2rem;
  width: 90%;
  max-width: 400px;
  border-radius: 12px;
  position: relative;
}

.close-btn {
  position: absolute;
  top: 0.8rem;
  right: 1rem;
  font-size: 1.5rem;
  cursor: pointer;
  color: #666;
}

.modal-content form input,
.modal-content form select,
.modal-content form textarea {
  width: 100%;
  padding: 0.75rem;
  margin: 0.75rem 0;
  border-radius: 6px;
  border: 1px solid #ccc;
  font-size: 1rem;
}

/* =============================
   Chat Box
============================= */
.chat-box {
  position: fixed;
  bottom: 70px;
  right: 20px;
  width: 300px;
  max-height: 400px;
  background-color: #ffffff;
  border-radius: 12px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  display: none;
  flex-direction: column;
  z-index: 9998;
  overflow: hidden;
}

.chat-header {
  background-color: #4a90e2;
  color: #fff;
  padding: 0.8rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: bold;
}

.chat-messages {
  padding: 1rem;
  overflow-y: auto;
  flex: 1;
  font-size: 0.95rem;
}

.chat-form {
  display: flex;
  padding: 0.5rem;
  border-top: 1px solid #ccc;
}

.chat-form input {
  flex: 1;
  padding: 0.5rem;
  border: 1px solid #ccc;
  border-radius: 6px;
}

.chat-form button {
  margin-left: 0.5rem;
  background-color: #4a90e2;
  border: none;
  color: white;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
}

.close-chat {
  cursor: pointer;
}

.chat-toggle {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #4a90e2;
  color: white;
  border: none;
  padding: 0.8rem 1rem;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  z-index: 9999;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

/* =============================
   Footer
============================= */
footer {
  background-color: #eaf0f7;
  text-align: center;
  padding: 1rem 0;
  font-size: 0.9rem;
  color: #666;
}

.logo-img {
  height: 100px;
  object-fit: contain;
}

/* =============================
   Dark Mode
============================= */
body.dark-mode {
  background-color: #121212;
  color: #f5f5f5;
}

body.dark-mode header,
body.dark-mode footer {
  background-color: #1f1f1f;
  color: #f5f5f5;
}

body.dark-mode .card,
body.dark-mode .modal-content,
body.dark-mode .professional-card {
  background-color: #1e1e1e;
  color: #f5f5f5;
  border-color: #333;
}

body.dark-mode input,
body.dark-mode select,
body.dark-mode textarea {
  background-color: #2a2a2a;
  color: #f5f5f5;
  border: 1px solid #444;
}

body.dark-mode .btn.secondary {
  background: linear-gradient(90deg, #444 0%, #333 100%);
}

body.dark-mode .chat-box {
  background-color: #1f1f1f;
  color: #f5f5f5;
}

body.dark-mode .chat-box .chat-header {
  background-color: #333;
}

body.dark-mode .chat-box input,
body.dark-mode .chat-box button {
  background-color: #333;
  color: #fff;
  border-color: #444;
}

.dark-toggle {
  background: none;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  margin-left: 1rem;
  color: #333;
  transition: color 0.3s;
}

body.dark-mode .dark-toggle {
  color: #f5f5f5;
}