/* Root Variables */
:root {
  --card-bg: #ffffff;
  --shadow: rgba(0, 0, 0, 0.2);
  --text: #333333;
  --accent: #007bff;
  --bg-light: #f5f5f5;
  --bg-dark: #1a1a1a;
  --text-dark: #ffffff;
}

/* Dark Mode */
.dark-mode {
  --card-bg: #2a2a2a;
  --text: #ffffff;
  --bg-light: #1a1a1a;
  --shadow: rgba(0, 0, 0, 0.4);
}

body {
  background: var(--bg-light);
  color: var(--text);
  font-family: Arial, sans-serif;
  margin: 0;
  transition: background 0.3s, color 0.3s;
}

/* Preloader */
#preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}
.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--accent);
  border-top: 4px solid transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 30px;
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 12px var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo {
  width: 40px;
  height: 40px;
}
h1 span {
  color: var(--accent);
}



/* Search Bar */
.search-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: 20px;
}
#search-input {
  padding: 8px;
  border: 1px solid var(--text);
  border-radius: 5px;
  width: 150px;
  transition: width 0.3s;
}
#search-btn {
  background: none;
  border: none;
  cursor: pointer;
}
#search-btn i {
  stroke: var(--accent);
}

/* Theme Toggle */
#theme-toggle {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
}

/* Mobile / Tablet Dropdown */
@media (max-width: 900px) {
  #hamburger {
    display: block;
    font-size: clamp(20px, 6vw, 24px);
    cursor: pointer;
    background: none;
    border: none;
    padding: 10px;
    z-index: 1002;
  }
  .nav-dropdown {
    position: fixed;
    top: clamp(50px, 15vw, 60px);
    right: 10px;
    width: clamp(200px, 60vw, 220px);
    max-height: 80vh;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    box-shadow: 0 8px 20px var(--shadow);
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: all 0.3s ease-in-out;
    z-index: 1001;
    overflow-y: auto;
  }
  .nav-dropdown.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  #close-menu {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: clamp(18px, 5vw, 22px);
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
  }
  .nav-dropdown .nav-links {
    display: flex;
    flex-direction: column;
    gap: clamp(15px, 4vw, 20px);
    padding: clamp(40px, 12vw, 50px) 20px 20px 20px;
  }
  .nav-dropdown .nav-links li a {
    font-size: clamp(1rem, 4vw, 1.2rem);
    color: var(--text);
    text-decoration: none;
    transition: color 0.3s;
    padding: 8px 0;
  }
  .nav-dropdown .nav-links li a:hover,
  .nav-dropdown .nav-links li a.active {
    color: var(--accent);
  }
  .search-bar {
    display: none; /* Hide search bar on mobile */
  }
}

/* Extra Small Phones (below 600px) */
@media (max-width: 600px) {
  .nav-dropdown {
    width: 90vw;
    right: 5vw;
    top: 50px;
  }
  .nav-dropdown .nav-links {
    padding: 40px 15px 15px 15px;
  }
  #hamburger, #close-menu {
    padding: 12px;
  }
}


/* Desktop hide hamburger & dropdown, show search */
@media (min-width: 901px) {
  #hamburger,  #close-menu {
    display: none;
  }
  .search-bar {
    display: flex;
  }
}

/* Header Navigation - Desktop */
.nav-links {
  display: flex;
  list-style: none;
  gap: 18px;
}
/* Hero Section */
.hero {
  padding: clamp(40px, 10vw, 60px) 20px;
  text-align: center;
  background: linear-gradient(135deg, var(--accent) 0%, #4dabf7 100%);
  color: #fff;
}
.hero-content {
  max-width: 800px;
  margin: 0 auto;
}
.btn-primary {
  background: #fff;
  color: var(--accent);
  padding: 10px 20px;
  border-radius: 5px;
  text-decoration: none;
  transition: background 0.3s;
}
.btn-primary:hover {
  background: var(--text);
  color: #fff;
}

/* Tools Section */
.tools-section {
  padding: clamp(40px, 10vw, 60px) clamp(15px, 5vw, 20px);
  text-align: center;
  max-width: 1200px;
  margin: 0 auto;
}
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(clamp(200px, 45vw, 250px), 1fr));
  gap: clamp(20px, 5vw, 50px);
  margin-top: 30px;
  padding: 0 clamp(10px, 4vw, 40px);
  justify-content: center;
}
.tool-card {
  background: var(--card-bg);
  border-radius: 15px;
  padding: clamp(20px, 5vw, 25px) clamp(15px, 4vw, 20px);
  box-shadow: 0 8px 20px var(--shadow);
  text-decoration: none;
  color: var(--text);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
}
.tool-card:hover,
.tool-card:active {
  transform: translateY(-5px);
  box-shadow: 0 12px 28px var(--shadow);
}

.tool-container { display:flex; flex-direction:column; align-items:center; gap:45px; padding:70px 20px; }
.tool-card, .result-card {
  max-width:500px;  background:var(--card-bg); padding:35px 25px; border-radius:15px;
  box-shadow:0 8px 25px var(--shadow); text-align:center; transition:0.3s;
}
.tool-card:hover{transform: translateY(-5px);}
.tool-card h3, .result-card h3{ margin:0 0 15px; font-size:1.6rem; }
.tool-card p, .result-card p { font-size:1rem; line-height:1.6; margin-bottom:15px; }

.tool-card label { display:block; text-align:left; margin-top:15px; margin-bottom:5px; font-weight:500; }
.tool-card input, .tool-card select {
  width:80%; padding:12px; border-radius:8px; border:1px solid var(--accent);
  margin-bottom:10px; font-size:1rem;
}
@media (max-width: 600px) {
  .tools-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 0 10px;
  }
  .tool-card {
    padding: 15px;
  }
}
@media (max-width: 400px) {
  .tools-section {
    padding: 30px 10px;
  }
  .tools-grid {
    gap: 15px;
  }
  .tool-card {
    padding: 12px;
    font-size: 0.9rem;
  }
}

/* About Section */
.about {
  padding: clamp(30px, 8vw, 50px) 20px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

/* Footer */
footer {
  padding: 20px;
  text-align: center;
  background: var(--card-bg);
  box-shadow: 0 -2px 5px var(--shadow);
}
.social-links {
  margin-top: 10px;
  display: flex;
  justify-content: center;
  gap: 15px;
}
.social-links a {
  color: var(--text);
  transition: color 0.3s;
}
.social-links a:hover {
  color: var(--accent);
}

/* Back to Top Button */
#back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.3s;
}
#back-to-top.visible {
  opacity: 1;
}




/* Testimonials */
.testimonials {
  padding: 50px 20px;
  text-align: center;
  background: var(--bg-light);
}
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}
.testimonial-card {
  background: var(--card-bg);
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 10px var(--shadow);
}

/* FAQ */
.faq {
  padding: 50px 20px;
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  margin-bottom: 10px;
}
.faq-question {
  width: 100%;
  padding: 15px;
  background: var(--card-bg);
  border: none;
  text-align: left;
  cursor: pointer;
  font-weight: bold;
  border-radius: 8px;
  transition: background 0.3s;
}
.faq-question:hover {
  background: var(--accent);
  color: #fff;
}
.faq-answer {
  display: none;
  padding: 15px;
  background: var(--card-bg);
  border-radius: 0 0 8px 8px;
}
.faq-item.active .faq-answer {
  display: block;
}

/* Newsletter */
.newsletter {
  margin-top: 20px;
}
#newsletter-form {
  display: flex;
  gap: 10px;
}
#newsletter-form input {
  flex: 1;
  padding: 10px;
  border-radius: 5px;
  border: 1px solid var(--shadow);
}
#newsletter-form button {
  padding: 10px 20px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

/* =========================
   Calculator Container
========================= */
.calculator-container {
  max-width: 400px;
  margin: 50px auto;
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  padding: 30px 25px;
  border-radius: 15px;
  box-shadow: 0 8px 25px var(--shadow);
  text-align: center;
}

/* =========================
   Calculator Heading
========================= */
.calculator-container h2 {
  margin-bottom: 20px;
  color: var(--accent);
  font-size: 1.8rem;
}

/* =========================
   Input Fields
========================= */
.calculator-container input,
.calculator-container select {
  width: 90%;
  padding: 12px 15px;
  margin-bottom: 15px;
  border-radius: 8px;
  border: 1px solid #ccc;
  font-size: 1rem;
  outline: none;
  transition: 0.3s;
  background: rgba(255,255,255,0.9);
  color: var(--text);
}

body.dark .calculator-container input,
body.dark .calculator-container select {
  background: rgba(30,30,30,0.9);
  color: var(--text);
  border: 1px solid rgba(255,255,255,0.2);
}

.calculator-container input:focus,
.calculator-container select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

/* =========================
   Buttons
========================= */
.calculator-container button {
  width: 100%;
  padding: 12px 0;
  margin-top: 10px;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 1rem;
  cursor: pointer;
  transition: 0.3s;
}

.calculator-container button:hover {
  background: #00e676;
  transform: translateY(-2px);
  box-shadow: 0 6px 15px var(--shadow);
}

/* =========================
   Result
========================= */
.calculator-container .result {
  margin-top: 20px;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text);
  background: rgba(0,0,0,0.05);
  padding: 12px;
  border-radius: 8px;
}

body.dark .calculator-container .result {
  background: rgba(255,255,255,0.05);
  color: var(--text);
}

/* =========================
   Responsive
========================= */
@media(max-width:480px){
  .calculator-container {
    padding: 25px 20px;
  }
  .calculator-container h2 {
    font-size: 1.5rem;
  }
  .calculator-container button {
    font-size: 0.95rem;
    padding: 10px 0;
  }
}

/* ... (Rest of previous CSS for responsive, etc.) ... */