:root {
    /* Modern Palette */
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --secondary: #ec4899;
    --background: #ffffff;
    --surface: #f3f4f6;
    --surface-card: #ffffff;
    --text: #111827;
    --text-secondary: #6b7280;
    --border: #e5e7eb;
    --success: #10b981;
    --error: #ef4444;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
    
    /* Spacing & Radius */
    --radius: 0.75rem;
    --radius-lg: 1rem;
    --container: 1200px;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --background: #0f172a;
    --surface: #1e293b;
    --surface-card: #1e293b;
    --text: #f9fafb;
    --text-secondary: #9ca3af;
    --border: #334155;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.5);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--background);
    color: var(--text);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

/* Layout */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.navbar {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}
[data-theme="dark"] .navbar { background: rgba(15, 23, 42, 0.8); }

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    text-decoration: none;
}

.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-link { color: var(--text-secondary); text-decoration: none; font-weight: 500; transition: var(--transition); }
.nav-link:hover { color: var(--primary); }

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text);
    cursor: pointer;
    padding: 0.5rem;
}

/* Chips */
.chip {
    display: inline-flex;
    align-items: center;
    padding: .4rem .7rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--text);
    text-decoration: none;
    transition: var(--transition);
    background: var(--surface-card);
}
.chip:hover { border-color: var(--text-secondary); }
.chip-active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    gap: 0.5rem;
}

.btn-primary { background: var(--primary); color: white; box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.39); }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-1px); }

.btn-secondary { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--text-secondary); }

/* Hero */
.hero {
    padding: 6rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.025em;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

/* Tool Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    padding: 4rem 0;
    perspective: 900px;
}

.tool-card {
    background: var(--surface-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: var(--transition);
    text-decoration: none;
    color: var(--text);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transform-style: preserve-3d;
    box-shadow: var(--shadow);
    position: relative;
}

.tool-card:hover {
    transform: translateY(-4px) rotateX(2deg) rotateY(-2deg);
    box-shadow: 0 20px 40px -20px rgba(0,0,0,.35);
    border-color: var(--primary);
}
.tool-card::after {
    /* ... existing styles ... */
    transform: translateZ(1px);
    pointer-events: none; /* Added this line */
}
.tool-icon {
    width: 3.5rem;
    height: 3.5rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.tool-card h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
.tool-card p { color: var(--text-secondary); font-size: 0.9rem; }

/* Upload Area */
.upload-area {
    background: var(--surface);
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: 4rem 2rem;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    box-shadow: var(--shadow);
}

.upload-area.dragover {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(99,102,241,.06), rgba(236,72,153,.06));
    transform: translateZ(12px);
}

.upload-icon {
    font-size: 4rem;
    color: var(--primary);
    margin-bottom: 1rem;
    opacity: 0.8;
}

/* Footer */
footer {
    background: var(--surface);
    padding: 4rem 0;
    margin-top: 6rem;
    border-top: 1px solid var(--border);
}

/* Hero 3D */
.hero::before {
    content: "";
    position: absolute;
    inset: -20%;
    background: radial-gradient(600px 300px at 20% 30%, rgba(99,102,241,.15), transparent),
                radial-gradient(400px 400px at 80% 20%, rgba(236,72,153,.12), transparent),
                radial-gradient(300px 300px at 50% 100%, rgba(16,185,129,.10), transparent);
    filter: blur(24px);
    transform: translateZ(-50px);
    pointer-events: none;
}
.hero h1 {
    transform: translateZ(10px);
}
.hero .btn {
    transform: translateZ(8px);
}

/* Animated Accent */
@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
    100% { transform: translateY(0); }
}
.tool-card:hover .tool-icon {
    animation: float 2.2s ease-in-out infinite;
}

/* 3D Shine */
.tool-card::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(120deg, rgba(255,255,255,.0) 30%, rgba(255,255,255,.18) 50%, rgba(255,255,255,.0) 70%);
    opacity: 0;
    transition: var(--transition);
    transform: translateZ(1px);
    pointer-events: none;
}
.tool-card:hover::after {
    opacity: 1;
}

/* Buttons depth */
.btn-primary { box-shadow: 0 8px 18px rgba(99,102,241,.35); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 4px 12px rgba(99,102,241,.35); }
.btn-secondary { box-shadow: var(--shadow-sm); }
.btn-secondary:hover { transform: translateY(-1px); box-shadow: var(--shadow); }

/* Utilities */
.text-gradient {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: none;
    color: var(--text);
    cursor: pointer;
    font-size: 1.25rem;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
}
.theme-toggle:hover { background: var(--surface); }

/* Admin Dashboard */
.admin-layout { display: flex; min-height: 100vh; }
.sidebar { width: 260px; background: var(--surface-card); border-right: 1px solid var(--border); padding: 1.5rem; }
.sidebar-link { display: block; padding: 0.75rem 1rem; color: var(--text-secondary); text-decoration: none; border-radius: var(--radius); margin-bottom: 0.5rem; }
.sidebar-link:hover, .sidebar-link.active { background: var(--primary); color: white; }
.main-content { flex: 1; padding: 2rem; background: var(--surface); }

/* Admin Components */
.admin-header {
    background: linear-gradient(135deg, rgba(99,102,241,.12), rgba(20,184,166,.12));
    border:1px solid var(--border);
    padding: 1rem 1.5rem;
    border-radius: var(--radius);
    display:flex; align-items:center; justify-content:space-between; gap:1rem;
    margin-bottom:1.5rem;
}
.page-title { margin:0; font-size:1.5rem; }
.card { background: var(--surface-card); padding: 1.5rem; border-radius: var(--radius); box-shadow: var(--shadow); border:1px solid var(--border); }
.card + .card { margin-top: 1rem; }
.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: repeat(3,1fr); }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: .75rem 1rem; border-bottom: 1px solid var(--border); text-align: left; }
.table thead th { color: var(--text-secondary); font-weight: 600; }
.table tr:hover { background: rgba(99,102,241,.06); }
.modal { display:none; position: fixed; inset: 0; background: rgba(0,0,0,0.35); }
.modal-body { background: var(--surface-card); width: 640px; max-width: 92%; margin: 7% auto; border-radius: var(--radius); padding: 1rem; border:1px solid var(--border); box-shadow: var(--shadow-glass); }

/* Form Elements */
input[type="text"], input[type="email"], input[type="password"], input[type="number"], input[type="color"], textarea, select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--background);
    color: var(--text);
    margin-bottom: 1rem;
    font-family: inherit;
    transition: var(--transition);
}
input:focus { outline: 2px solid var(--primary); border-color: transparent; }

input[type="range"] {
    width: 100%;
    cursor: pointer;
    margin: 1rem 0;
}

.control-group {
    margin-bottom: 1.5rem;
}

.control-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text);
}

.form-control {
    display: block;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    
    .mobile-menu-btn { display: block; }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--surface-card);
        flex-direction: column;
        padding: 1rem;
        gap: 0;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
    }
    
    .nav-links.active { display: flex; }
    
    .nav-link {
        display: block;
        padding: 0.75rem 1rem;
        width: 100%;
        border-radius: var(--radius);
    }
    
    .nav-link:hover {
        background: var(--surface);
    }
    
    .admin-layout { flex-direction: column; }
    .sidebar { width: 100%; }
}

/* Ads: Responsive Containers */
.ad-responsive {
    display: block;
    width: 100%;
    max-width: 100%;
    text-align: center;
    margin: 1rem auto;
}
.ad-responsive iframe,
.ad-responsive ins,
.ad-responsive div,
.ad-responsive img {
    max-width: 100% !important;
}

/* Anchor Ads */
.ad-anchor {
    position: fixed;
    left: 0;
    right: 0;
    z-index: 9999;
    pointer-events: none;
}
.ad-anchor.top { top: 0; }
.ad-anchor.bottom { bottom: 0; }

/* Side Rails (hidden on small screens) */
.ad-rail {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    z-index: 9999;
    pointer-events: none;
}
.ad-rail.left { left: 0; }
.ad-rail.right { right: 0; }

@media (max-width: 1200px) {
    .ad-rail { display: none; }
}

/* Optional: reduce overlap with sticky navbar */
body .navbar + .ad-anchor.top { top: 0; }

/* Ensure ad content remains clickable while containers don't block page */
.ad-anchor .ad-responsive,
.ad-rail .ad-responsive {
    pointer-events: auto;
}