/* Basic Reset & Fonts */
body {
  margin: 0;
  font-family: "Inter", sans-serif;
  background: #f4f6fc;
  line-height: 1.6;
  padding-top: 80px;
  /* space for fixed header */
}

h1,
h2,
h3,
h4,
h5,
h6,
p,
a {
  font-family: "Montserrat", sans-serif;
}

/* Container */
.container {
  width: 90%;
  max-width: 1200px;
  margin: auto;
}

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 10000;
  background: #1e3a8a;
  transition: all 0.3s ease;
  padding: 20px 0;
}

header.scrolled {
  padding: 10px 0;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

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

/* Logo */
header .logo a {
  font-weight: 700;
  font-size: 28px;
  color: white;
  text-decoration: none;
}

/* Nav Links */
.nav-links {
  display: flex;
  gap: 25px;
  list-style: none;
  transition: all 0.3s ease;
  align-items: center;
  margin: 0;
  padding: 0;
}

.nav-links.scrolled {
  top: 65px;
  height: calc(100% - 106px);
}

.nav-links li {
  position: relative;
  list-style: none;
}

.nav-links li a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: 0.2s;
  display: flex;
  align-items: center;
  gap: 5px;
}

.nav-links li a:hover {
  color: #fbbf24;
}

/* Dropdown Styles */
.dropdown {
  position: relative;
  padding: 5px 0;
}

.dropdown-toggle {
  cursor: pointer;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  background: white;
  min-width: 200px;
  border-radius: 8px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  margin-top: 0px;
  padding: 10px 0;
  list-style: none;
  z-index: 100;
}

.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li {
  list-style: none;
}

.dropdown-menu a {
  color: #1e3a8a !important;
  padding: 12px 20px;
  display: block;
  transition: 0.2s;
  font-size: 14px;
}

.dropdown-menu a:hover {
  background: #f3f4f6;
  color: #4f46e5 !important;
}

.dropdown-menu i {
  margin-right: 8px;
  width: 16px;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 1010;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: white;
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* Hamburger animation */
.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(0, 0);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
  display: none;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Nav */
@media (max-width: 900px) {
  .nav-links {
    position: fixed;
    top: 85px;
    right: -300px;
    width: 250px;
    flex-direction: column;
    background: #1e3a8a;
    border-radius: 8px 0 0 8px;
    gap: 15px;
    transition: right 0.3s ease;
    height: calc(100% - 126px);
    overflow-y: auto;
    align-items: flex-start;
    padding: 20px;
  }

  .nav-links.active {
    right: 0;
  }

  .hamburger {
    display: flex;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links li a {
    width: 100%;
    display: block;
  }

  .nav-links li a i:first-child {
    margin-right: 5px;
  }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background: rgba(255, 255, 255, 0.1);
    margin-top: 5px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    border-radius: 4px;
    max-height: 500px;
    padding: 5px 0;
  }

  .dropdown-menu a {
    color: white !important;
    padding: 10px 15px;
    font-size: 14px;
  }

  .dropdown-menu a:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #fbbf24 !important;
  }

  .dropdown-toggle {
    width: 100%;
    justify-content: space-between;
  }

  .dropdown .dropdown-toggle .fa-chevron-down {
    display: none;
  }

  .dropdown:hover .dropdown-menu {
    margin-top: 5px;
  }

  .nav-links li a.dropdown-toggle:hover {
    color: #fff;
  }
}

/* Hero */
.hero {
  background: linear-gradient(135deg, #4f46e5, #6366f1, #3b82f6);
  color: white;
  text-align: center;
  padding: 120px 20px;
  transition: padding 0.3s ease;
}

.hero h1 {
  font-size: 36px;
  margin: 0 0 20px 0;
}

.hero p {
  font-size: 18px;
  margin-bottom: 30px;
}

.cta-button {
  background: #fbbf24;
  color: #1e3a8a;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  transition: 0.3s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 2px solid #1e3a8a;
  cursor: pointer;
}

.cta-button:hover {
  background: #f59e0b;
}

/* Features */
.features,
.benefits {
  padding: 80px 20px;
  text-align: center;
}

.features h2,
.benefits h2 {
  font-size: 32px;
  margin-bottom: 40px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.feature-card {
  background: white;
  padding: 30px 20px;
  border-radius: 12px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
  font-weight: 500;
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}

.feature-card h3 {
  color: #1e3a8a;
  /* dark navy for heading */
  font-size: 20px;
  margin-bottom: 10px;
}

.feature-card p {
  color: #555;
  /* medium gray for paragraph */
  font-size: 14px;
  line-height: 1.5;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* Footer */
footer {
  background: #1e3a8a;
  color: white;
  padding: 40px 20px;
  text-align: center;
}

/* Simple Footer Links */
.footer-simple {
  text-align: center;
}

.footer-links-inline {
  margin-bottom: 8px;
}

.footer-links-inline a {
  color: #fbbf24;
  text-decoration: none;
  margin: 0 6px;
  font-size: 15px;
  transition: color 0.3s ease;
}

.footer-links-inline a:hover {
  color: #f59e0b;
}

.footer-links-inline span {
  color: #e5e7eb;
}

.footer-copy {
  margin: 10px 0 0 0;
  font-size: 14px;
  color: #e5e7eb;
}

.footer-links-inline i {
  margin-right: 5px;
  font-size: 13px;
}

footer a:hover {
  color: #f59e0b;
}

/* Merge Page */
.merge-tool {
  padding: 80px 20px 0;
  text-align: center;
  background: #f4f6fc;
}

.merge-tool h1 {
  font-size: 32px;
  margin-bottom: 15px;
}

.merge-tool .note {
  margin: 15px 0 30px;
  color: #555;
  font-size: 14px;
}

.upload-section {
  display: flex;
  flex-direction: column;
  gap: 15px;
  align-items: center;
}

.upload-label {
  display: inline-block;
  margin-bottom: 10px;
  font-weight: 500;
  cursor: pointer;
  color: #1e3a8a;
  font-size: 16px;
}

.file-list {
  margin: 0;
  text-align: left;
  max-width: 400px;
  list-style: none;
  padding: 0;
  margin: 20px 0;
}

.file-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: #f9fafb;
  border-radius: 8px;
  margin-bottom: 10px;
  border: 1px solid #e5e7eb;
}

.file-list .delete-file {
  cursor: pointer;
  color: #ef4444;
  transition: color 0.2s;
  margin-left: 20px;
}

.file-list .delete-file:hover {
  color: #dc2626;
}

.file-list .pdf-icon {
  color: #ef4444;
  margin-right: 10px;
  font-size: 18px;
}

.error-text {
  margin: 0;
  font-size: 14px;
  color: #dc2626;
  background: #ffd3d3;
  padding: 5px 10px;
  border-radius: 4px;
  display: none;
}

#pdfUpload {
  display: none;
}

.upload-section input[type="file"] {
  padding: 10px;
  border-radius: 6px;
  border: 1px solid #ccc;
  width: 250px;
}

.upload-section button.cta-button {
  padding: 12px 30px;
  font-size: 16px;
  cursor: pointer;
}

.cta-button i {
  margin-right: 8px;
}

/* Note */

#mergeBtn .fa-spinner {
  margin-right: 8px;
}

#downloadBtn,
#shareBtn {
  cursor: pointer;
}

.result-btns-container {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 20px;
}

.secondary-btn {
  background: #1e3a8a;
  border: 2px solid #1e3a8a;
  color: #ffffff;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: 0.3s;
  font-size: 16px;
}

.secondary-btn i {
  margin-right: 8px;
}

.secondary-btn:hover {
  background: #091f5c;
  color: white;
}

.result-card {
  width: 90px;
  height: 90px;
  background: linear-gradient(135deg, #ef4444, #dc2626);
  border-radius: 12px;
  margin: 0 auto 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 50px;
}

.file-name {
  text-align: center;
  margin: 15px 0;
  font-weight: 500;
  color: #374151;
}

.file-name a {
  color: #2563eb;
  text-decoration: none;
  cursor: pointer;
}

.file-name a:hover {
  color: #091f5c;
}

#pdfPreview h4 {
  font-size: 20px;
  padding-top: 40px;
}

@media (max-width: 440px) {
  .merge-tool .note {
    margin-bottom: 20px;
  }

  #downloadBtn,
  #shareBtn {
    display: block;
    margin-right: 0;
  }
}

/* Compress PDF */
.result-info {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 8px;
  padding: 15px;
  margin: 15px 0 40px;
  text-align: center;
}

.result-info p {
  margin: 5px 0;
  color: #166534;
}

.result-info strong {
  color: #15803d;
}

.size-badge {
  display: inline-block;
  padding: 4px 12px;
  background: #dcfce7;
  color: #166534;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 500;
  margin-left: 8px;
}

.page-range {
  margin-top: 12px;
  width: 100%;
  max-width: 400px;
  padding: 10px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
}

@media (max-width: 452px) {
  .result-btns-container a,
  .result-btns-container button {
    padding: 10px 19px;
    font-size: 14px;
  }
}