:root {
  /* Core Colors requested */
  --ml-primary: #2563EB;
  --ml-hover: #1D4ED8;
  --ml-heading: #111827;
  --ml-heading-main: #0F172A;
  --ml-body: #4B5563;
  --ml-secondary: #6B7280;
  --ml-border: #E5E7EB;
  --ml-bg: #f7f9e15a;
  --ml-bg-alt: #F8FAFC;
  --ml-footer: #f7f9e15a;
  --ml-accent: #F59E0B;
  
  /* Geometry & Effects */
  --ml-radius: 12px;
  --ml-radius-lg: 16px;
  --ml-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --ml-shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
  --ml-shadow-soft: 0 2px 10px rgba(0,0,0,0.02);
  --ml-transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  
  --ml-navbar-bg: rgba(255, 255, 255, 0.9);
  --ml-gradient: linear-gradient(135deg, var(--ml-primary) 0%, var(--ml-hover) 100%);
}

* { box-sizing: border-box; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--ml-body);
  background: var(--ml-bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

a { color: var(--ml-primary); text-decoration: none; transition: var(--ml-transition); }
a:hover { color: var(--ml-hover); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { 
  outline: 2px solid var(--ml-primary); outline-offset: 2px; 
}

h1 { color: var(--ml-heading-main); font-weight: 800; letter-spacing: -0.03em; }
h2, h3, h4, .fw-display { color: var(--ml-heading); font-weight: 700; letter-spacing: -0.02em; }

.text-gradient {
  background: var(--ml-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Form Controls ---------- */
.form-control, .form-select {
  background-color: var(--ml-bg);
  border: 1px solid var(--ml-border);
  color: var(--ml-heading);
  border-radius: var(--ml-radius);
  padding: 0.6rem 1rem;
  transition: var(--ml-transition);
  box-shadow: var(--ml-shadow-soft);
}
.form-control:focus, .form-select:focus {
  background-color: var(--ml-bg);
  border-color: var(--ml-primary);
  color: var(--ml-heading);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}
.form-control::placeholder {
  color: var(--ml-secondary);
}

/* ---------- Navbar ---------- */
.ml-navbar {
  background: var(--ml-navbar-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--ml-border);
  padding: 0.85rem 0;
  position: sticky; top: 0; z-index: 1000;
}
.ml-brand {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-weight: 800; font-size: 1.25rem; color: var(--ml-heading-main);
  letter-spacing: -0.02em;
}
.ml-navbar .nav-link { color: var(--ml-secondary); font-weight: 500; transition: var(--ml-transition); font-size: 0.95rem; }
.ml-navbar .nav-link:hover { color: var(--ml-heading); }

/* ---------- Buttons ---------- */
.ml-btn-gradient, .btn-primary {
  background: var(--ml-primary);
  color: #fff !important;
  border: none;
  font-weight: 600;
  padding: 0.6rem 1.4rem;
  border-radius: var(--ml-radius);
  transition: var(--ml-transition);
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
}
.ml-btn-gradient:hover, .btn-primary:hover { 
  background: var(--ml-hover);
  transform: translateY(-1px); 
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3); 
}
.ml-btn-gradient:disabled, .btn-primary:disabled { opacity: 0.6; cursor: not-allowed; transform: none; box-shadow: none; }

.ml-btn-outline {
  border: 1px solid var(--ml-border);
  color: var(--ml-heading);
  font-weight: 600;
  border-radius: var(--ml-radius);
  padding: 0.6rem 1.4rem;
  background: var(--ml-bg);
  transition: var(--ml-transition);
  box-shadow: var(--ml-shadow-soft);
}
.ml-btn-outline:hover { border-color: var(--ml-secondary); color: var(--ml-heading-main); background: var(--ml-bg-alt); }

/* ---------- Hero Section ---------- */
.ml-hero {
  padding: 5.5rem 0 4.5rem;
  background: var(--ml-bg);
  position: relative;
  text-align: center;
}
.ml-hero h1 { font-size: clamp(2.5rem, 5vw, 4rem); line-height: 1.15; margin-bottom: 1.25rem; }
.ml-hero .lead { color: var(--ml-secondary); font-size: 1.15rem; max-width: 650px; margin: 0 auto 2rem; line-height: 1.6; }

.ml-search-box {
  background: var(--ml-bg);
  border: 1px solid var(--ml-border);
  border-radius: var(--ml-radius-lg);
  box-shadow: var(--ml-shadow);
  padding: 0.35rem;
  transition: var(--ml-transition);
  max-width: 500px;
  margin: 0 auto;
  display: flex;
}
.ml-search-box:focus-within { border-color: var(--ml-primary); box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1), var(--ml-shadow); }
.ml-search-box input {
  border: none; outline: none; padding: 0.7rem 1.2rem; width: 100%; font-size: 1rem; background: transparent; color: var(--ml-heading);
}
.ml-search-box input::placeholder { color: var(--ml-secondary); }

/* ---------- Cards / Grid ---------- */
.ml-card {
  background: var(--ml-bg);
  border: 1px solid var(--ml-border);
  border-radius: var(--ml-radius-lg);
  transition: var(--ml-transition);
  box-shadow: var(--ml-shadow-soft);
  height: 100%;
}
.ml-card:hover { transform: translateY(-3px); box-shadow: var(--ml-shadow-hover); border-color: #d1d5db; }

.ml-tool-card { display: block; padding: 1.75rem; height: 100%; color: inherit; }
.ml-tool-card:hover { color: inherit; }
.ml-tool-icon {
  width: 48px; height: 48px; border-radius: var(--ml-radius);
  background: var(--ml-bg-alt);
  display: flex; align-items: center; justify-content: center;
  color: var(--ml-accent); font-weight: 700; font-size: 1.2rem; margin-bottom: 1.2rem;
  border: 1px solid var(--ml-border);
  transition: var(--ml-transition);
}
.ml-card:hover .ml-tool-icon { background: var(--ml-primary); color: #fff; border-color: var(--ml-primary); }
.ml-tool-card h3 { font-size: 1.15rem; margin-bottom: 0.5rem; font-weight: 700; color: var(--ml-heading); }
.ml-tool-card p { color: var(--ml-secondary); font-size: 0.95rem; margin-bottom: 0; line-height: 1.5; }

/* ---------- Layout & Sections ---------- */
.ml-section { padding: 4.5rem 0; }
.ml-section-alt { background: var(--ml-bg-alt); border-top: 1px solid var(--ml-border); border-bottom: 1px solid var(--ml-border); }
.ml-eyebrow {
  text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.75rem;
  font-weight: 700; color: var(--ml-primary);
  display: inline-block; margin-bottom: 0.75rem;
}

/* ---------- Converter / Dropzone Widget ---------- */
.ml-converter {
  background: var(--ml-bg);
  border: 1px solid var(--ml-border);
  border-radius: var(--ml-radius-lg);
  padding: 2.5rem;
  box-shadow: var(--ml-shadow);
}
.ml-dropzone {
  border: 2px dashed var(--ml-border);
  border-radius: var(--ml-radius-lg);
  background: var(--ml-bg-alt);
  padding: 4rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: var(--ml-transition);
}
.ml-dropzone:hover { border-color: var(--ml-primary); background: #f0fdf4; /* Very subtle tint on hover */ }
.ml-dropzone.dragover { border-color: var(--ml-primary); background: rgba(37, 99, 235, 0.05); transform: scale(1.01); }
.ml-dropzone .icon-wrap {
  width: 64px; height: 64px; border-radius: var(--ml-radius); margin: 0 auto 1.25rem;
  background: var(--ml-bg); display: flex; align-items: center; justify-content: center;
  color: var(--ml-primary); box-shadow: var(--ml-shadow-soft); border: 1px solid var(--ml-border);
  transition: var(--ml-transition);
}
.ml-dropzone:hover .icon-wrap { transform: translateY(-2px); box-shadow: var(--ml-shadow); }
.ml-dropzone h5 { font-weight: 700; margin-bottom: 0.4rem; color: var(--ml-heading); font-size: 1.1rem; }
.ml-dropzone .hint { color: var(--ml-secondary); font-size: 0.95rem; }

.ml-preview-card {
  border: 1px solid var(--ml-border);
  border-radius: var(--ml-radius);
  padding: 1rem;
  background: var(--ml-bg-alt);
}
.ml-preview-thumb {
  width: 100%; max-height: 260px; object-fit: contain; border-radius: 8px; background: var(--ml-bg);
  border: 1px solid var(--ml-border);
}
.ml-filename { font-weight: 600; font-size: 0.95rem; word-break: break-all; color: var(--ml-heading); }
.ml-filesize { color: var(--ml-secondary); font-size: 0.85rem; }

.ml-progress-wrap { display: none; }
.ml-progress-wrap.active { display: block; animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }
.ml-progress {
  height: 8px; border-radius: 999px; background: var(--ml-border); overflow: hidden;
}
.ml-progress-bar {
  height: 100%; background: var(--ml-primary); width: 0%;
  transition: width 0.3s ease;
}

.ml-alert-error {
  border-radius: var(--ml-radius); border: 1px solid #fecaca; background: #fef2f2; color: #dc2626;
  padding: 1rem 1.2rem; font-size: 0.95rem; display: flex; align-items: center; gap: 0.5rem;
}
.ml-alert-success {
  border-radius: var(--ml-radius); border: 1px solid #bbf7d0; background: #f0fdf4; color: #16a34a;
  padding: 1rem 1.2rem; font-size: 0.95rem; display: flex; align-items: center; gap: 0.5rem;
}

/* ---------- Steps ---------- */
.ml-step-num {
  width: 44px; height: 44px; border-radius: var(--ml-radius); background: var(--ml-bg);
  color: var(--ml-primary); display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 1.1rem;
  margin-bottom: 1.2rem; border: 1px solid var(--ml-border); box-shadow: var(--ml-shadow-soft);
}

/* ---------- FAQ ---------- */
.accordion-button:not(.collapsed) {
  background: var(--ml-bg-alt); color: var(--ml-primary); box-shadow: none;
}
.accordion-button {
  background: var(--ml-bg); color: var(--ml-heading); font-weight: 600; padding: 1.25rem 1.5rem; transition: var(--ml-transition);
}
.accordion-button:focus { box-shadow: none; border-color: var(--ml-border); }
.accordion-item { border: 1px solid var(--ml-border); border-radius: var(--ml-radius) !important; margin-bottom: 0.75rem; overflow: hidden; background: var(--ml-bg); box-shadow: var(--ml-shadow-soft); }
.accordion-body { background: var(--ml-bg); color: var(--ml-body); padding: 1.25rem 1.5rem; }

/* ---------- Breadcrumb ---------- */
.ml-breadcrumb { font-size: 0.9rem; color: var(--ml-secondary); margin-bottom: 1.5rem; }
.ml-breadcrumb a { color: var(--ml-secondary); transition: var(--ml-transition); }
.ml-breadcrumb a:hover { color: var(--ml-primary); }

/* ---------- Blog ---------- */
.ml-blog-card img, .ml-blog-thumb {
  border-radius: var(--ml-radius) var(--ml-radius) 0 0;
  width: 100%; object-fit: cover;
}
.ml-blog-card {
  background: var(--ml-bg);
  border: 1px solid var(--ml-border);
  border-radius: var(--ml-radius);
  overflow: hidden;
  transition: var(--ml-transition);
  box-shadow: var(--ml-shadow-soft);
  height: 100%;
}
.ml-blog-card:hover { transform: translateY(-4px); box-shadow: var(--ml-shadow-hover); }
.ml-blog-meta { color: var(--ml-secondary); font-size: 0.85rem; display: flex; gap: 1rem; margin-bottom: 0.5rem; }

/* ---------- Ads ---------- */
.ad-wrap { display: flex; justify-content: center; margin: 2rem 0; }
.ad-slot {
  background: var(--ml-bg-alt);
  border: 1px dashed #d1d5db;
  color: var(--ml-secondary);
  font-size: 0.75rem; font-weight: 500;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--ml-radius);
}
.ad-728x90 { width: 728px; max-width: 100%; height: 90px; }
.ad-300x250 { width: 300px; max-width: 100%; height: 250px; }
.ad-native-slot { width: 100%; max-width: 700px; height: 90px; }
.ad-sticky-mobile {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 1030;
  background: var(--ml-navbar-bg); backdrop-filter: blur(10px); border-top: 1px solid var(--ml-border);
  padding: 8px; display: flex; justify-content: center; box-shadow: 0 -4px 10px rgba(0,0,0,0.05);
}
.ad-320x50 { width: 320px; max-width: 100%; height: 50px; }

/* ---------- Footer ---------- */
.ml-footer { 
  background: var(--ml-footer); 
  color: #dadbd1; /* Lighter text for dark footer */
  padding: 4.5rem 0 2.5rem; 
  margin-top: 5rem;
}
.footer-heading { 
  font-size: 0.85rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; 
  color: #000000; margin-bottom: 1.25rem; 
}
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 0.8rem; }
.footer-links a { color: #9CA3AF; font-size: 0.95rem; transition: var(--ml-transition); }
.footer-links a:hover { color: #FFFFFF; }
.footer-hr { border-color: rgba(255, 255, 255, 0.1); margin: 3rem 0 2rem; }
.footer-bottom { color: #ffffff; font-size: 0.85rem; }

/* ---------- Admin ---------- */
.admin-shell { display: flex; min-height: 100vh; background: var(--ml-bg-alt); }
.admin-sidebar {
  width: 260px; background: var(--ml-bg); border-right: 1px solid var(--ml-border);
  color: var(--ml-heading); flex-shrink: 0; padding: 2rem 1.5rem;
}
.admin-sidebar .brand { font-weight: 800; font-size: 1.25rem; margin-bottom: 2.5rem; display: flex; align-items: center; gap: 0.6rem; color: var(--ml-heading-main); }
.admin-sidebar a {
  display: flex; align-items: center; gap: 0.75rem; color: var(--ml-secondary); padding: 0.75rem 1rem;
  border-radius: var(--ml-radius); font-size: 0.95rem; font-weight: 500; margin-bottom: 0.4rem; transition: var(--ml-transition);
}
.admin-sidebar a.active, .admin-sidebar a:hover { background: var(--ml-bg-alt); color: var(--ml-heading); font-weight: 600; }
.admin-main { flex: 1; padding: 2.5rem; max-width: 100%; overflow-x: hidden; }
.admin-kpi {
  background: var(--ml-bg); border-radius: var(--ml-radius-lg); border: 1px solid var(--ml-border); padding: 1.75rem;
  box-shadow: var(--ml-shadow-soft); transition: var(--ml-transition);
}
.admin-kpi:hover { transform: translateY(-2px); box-shadow: var(--ml-shadow); }
.admin-kpi .value { font-size: 2.2rem; font-weight: 800; color: var(--ml-heading-main); line-height: 1.2; }
.admin-kpi .label { color: var(--ml-secondary); font-size: 0.9rem; margin-top: 0.25rem; font-weight: 500; }
.admin-panel { background: var(--ml-bg); border-radius: var(--ml-radius-lg); border: 1px solid var(--ml-border); padding: 2rem; box-shadow: var(--ml-shadow-soft); }

@media (max-width: 900px) {
  .admin-shell { flex-direction: column; }
  .admin-sidebar { width: 100%; display: flex; align-items: center; gap: 1rem; overflow-x: auto; padding: 1rem 1.5rem; border-right: none; border-bottom: 1px solid var(--ml-border); }
  .admin-sidebar .brand { margin-bottom: 0; }
  .admin-sidebar a { white-space: nowrap; margin-bottom: 0; }
}

/* Custom Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--ml-bg-alt); }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }