:root {
  --primary-blue: #0066ff;
  --success-green: #00c26f;
  --white: #fff;
  --light-bg: #f7faff;
  --border-color: #dbe2ef;
  --text-dark: #222;
  --text-light: #555;
}

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

.preview-img {
  width: 80px !important;
  height: 80px !important;
  object-fit: cover !important;
  border-radius: 8px !important;
  border: 1px solid #dbe2ef !important;
  margin: 5px !important;
}

body {
  background: linear-gradient(180deg, #f2f8ff, #eafaf4);
  min-height: 100vh;
  color: var(--text-dark);
}

.navbar {
  background: var(--primary-blue);
  padding: 20px 55px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--white);
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
}

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.logo-bachelor {
  color: #fff;
}

.logo-life {
  color: #fff;
}

.nav-links a {
  text-decoration: none;
  color: var(--white);
  margin: 0 15px;
  font-weight: 700;
  transition: 0.3s;
}

.nav-links a:hover {
  color: var(--success-green);
}

.login-btn {
  background: var(--white);
  color: var(--primary-blue);
  padding: 8px 20px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  transition: 0.3s;
}

.login-btn:hover {
  background: var(--success-green);
  color: var(--white);
}

.post-room-container {
  display: flex;
  justify-content: center;
  padding: 60px 20px;
}

.form-card {
  background: var(--white);
  width: 100%;
  max-width: 800px;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
  overflow: hidden;
}

.form-header {
  background: linear-gradient(135deg,
      var(--primary-blue),
      var(--success-green));
  color: var(--white);
  padding: 35px;
}

.form-title {
  font-size: 2em;
  margin-bottom: 5px;
}

.form-subtitle {
  opacity: 0.9;
}

.post-form {
  padding: 35px;
}

.form-section-title {
  font-weight: 700;
  font-size: 1.3em;
  color: var(--primary-blue);
  border-bottom: 2px solid var(--border-color);
  margin: 25px 0 20px;
  padding-bottom: 5px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.input-group {
  display: flex;
  flex-direction: column;
}

.input-group label {
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-dark);
}

.input-group input,
.input-group select,
.input-group textarea {
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  transition: 0.3s;
}

.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
  border-color: var(--primary-blue);
  box-shadow: 0 0 8px rgba(0, 102, 255, 0.3);
  outline: none;
}

textarea {
  resize: vertical;
}

.amenities-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px 15px;
  color: var(--text-light);
}

.bachelor-friendly-check {
  border: 1px solid var(--success-green);
  background: rgba(0, 194, 111, 0.05);
  padding: 15px;
  border-radius: 8px;
  margin: 25px 0;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 15px;
  margin-top: 25px;
}

.btn-cancel,
.btn-submit {
  padding: 12px 25px;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s;
}

.btn-cancel {
  background: #f5f5f5;
  color: var(--text-light);
  border: 1px solid var(--border-color);
}

.btn-cancel:hover {
  background: #e4e4e4;
}

.btn-submit {
  background: var(--primary-blue);
  color: var(--white);
  box-shadow: 0 3px 8px rgba(0, 102, 255, 0.3);
}

.btn-submit:hover {
  background: var(--success-green);
  box-shadow: 0 3px 8px rgba(0, 194, 111, 0.4);
  transform: translateY(-1px);
}

footer {
  text-align: center;
  padding: 15px;
  background: var(--primary-blue);
  color: white;
  animation: fadeInUp 1.2s ease-in both;
}

footer a {
  color: var(--white);
  text-decoration: none;
}

footer a:hover {
  text-decoration: none;
  color: var(--success-green);
}

/* --- Tablet Devices (max-width: 1024px) --- */
@media (max-width: 1024px) {

  /* General Spacing */
  .container,
  nav,
  .navbar,
  header {
    padding: 15px 30px !important;
  }

  /* Post Room & Room Detail Content */
  .content-wrapper,
  .form-grid {
    gap: 20px;
  }

  .room-container {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 30px;
  }
}

/* --- Mobile Devices (max-width: 768px) --- */
@media (max-width: 768px) {

  /* Navbar Adjustments */
  nav,
  .navbar,
  header,
  .navbar-content {
    flex-direction: column;
    text-align: center;
    gap: 15px;
    height: auto !important;
  }

  .nav-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
  }

  .nav-links a {
    margin-left: 10px !important;
    margin-right: 10px !important;
    font-size: 14px;
  }

  /* Hero & Titles */
  .hero-section h1,
  .form-title {
    font-size: 26px !important;
  }

  /* Forms (Login, Signup, Contact, Post Room) */
  .login-box,
  .form-card,
  .contact {
    width: 95% !important;
    max-width: none !important;
    padding: 25px !important;
    margin: 20px auto !important;
  }

  .form-grid {
    grid-template-columns: 1fr !important;
    /* Single column */
  }

  .amenities-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  /* Room Detail Page */
  .content-wrapper {
    flex-direction: column;
  }

  .room-details-section,
  .room-owner-section {
    flex: none !important;
    width: 100%;
  }

  .property-features {
    flex-direction: column;
    gap: 10px;
  }

  .google-map-section {
    height: 200px;
    font-size: 1.2em;
  }

  /* Home Page Grid */
  .room-container {
    grid-template-columns: 1fr !important;
    justify-items: center;
  }

  .filter-form {
    flex-direction: column !important;
    align-items: stretch !important;
  }

  .input-group,
  .budget-slider,
  .apply-filters-btn {
    width: 100% !important;
    min-width: unset !important;
  }
}

/* --- Small Phones (max-width: 480px) --- */
@media (max-width: 480px) {

  .container,
  nav,
  .navbar,
  header {
    padding: 15px 15px !important;
  }

  .nav-links a {
    font-size: 12px;
    margin: 5px !important;
  }

  .login-box h2,
  .form-header h1 {
    font-size: 20px !important;
  }

  .amenities-grid {
    grid-template-columns: 1fr !important;
  }

  .form-actions {
    flex-direction: column;
  }

  .btn-submit,
  .btn-cancel {
    width: 100%;
  }
}

#video-preview-container {
  margin-top: 10px;
}

#image-preview-container {
  display: flex;
  gap: 10px;
  margin-top: 10px;
  flex-wrap: wrap;
}