/* 
 * Premium Design System 2.0 (AdSense & SEO Optimized)
 * --------------------------------------------------
 * A sophisticated, high-contrast palette designed for 
 * professionalism, readability, and search engine ranking.
 */

:root {
    /* --- Clean & Professional Palette --- */
    --bs-body-bg: #ffffff;
    --bg-surface: #ffffff;
    --bg-surface-neutral: #f8fafc;

    --bs-body-color: #0f172a;
    --text-secondary: #1e293b;
    /* Darkened from #334155 */
    --text-muted: #475569;
    /* Kept but will be used less for labels */
    --text-dark: #0f172a;
    /* True dark for maximum clarity */

    --bs-primary: #4f46e5;
    --bs-primary-rgb: 79, 70, 229;
    --bs-primary-hover: #3730a3;

    --accent-indigo: #4f46e5;
    --accent-cyan: #0891b2;
    --accent-emerald: #059669;
    --accent-amber: #d97706;
    --accent-crimson: #e11d48;

    --bs-border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);

    /* Clean Borders & Solids Instead of Gradients */
    --gradient-primary: #4f46e5;
    --bg-hero: #f8fafc;

    /* Typography */
    --bs-font-sans-serif: 'Inter', system-ui, sans-serif;
    --transition-base: all 0.2s ease-in-out;
}



/* --- Core Styles --- */
html, body {
    scroll-behavior: smooth !important;
    overflow-x: hidden;
    width: 100%;
}

body {
    font-family: var(--bs-font-sans-serif);
    background-color: var(--bs-body-bg);
    color: var(--bs-body-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -webkit-overflow-scrolling: touch; /* Crucial for iOS momentum scrolling */
}

/* --- Layout & Typography --- */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    letter-spacing: -0.025em;
}

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

.btn-gradient {
    background: linear-gradient(135deg, #3b82f6 0%, #ec4899 100%);
    border: none;
    color: white;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-gradient:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 15px -3px rgba(236, 72, 153, 0.3);
    color: white;
}

/* --- Simple Navbar --- */
.glass-nav {
    background: var(--bg-surface);
    border-bottom: 1px solid var(--bs-border-color);
    padding: 0.75rem 0;
    box-shadow: var(--shadow-sm);
}

.navbar-brand {
    font-size: 1.5rem;
    letter-spacing: -0.05em;
}

.hover-bg-light {
    transition: var(--transition-base);
}

.hover-bg-light:hover {
    background-color: var(--bg-surface-neutral) !important;
    border-color: var(--bs-border-color) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* --- Search Bar Styling --- */
.search-container {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 10;
}

.search-input {
    background: var(--bg-surface);
    border: 2px solid var(--bs-border-color);
    padding: 1.25rem 1.5rem 1.25rem 3.5rem;
    border-radius: 100px;
    font-size: 1.1rem;
    color: var(--bs-body-color);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
}

.search-input:focus {
    border-color: var(--bs-primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.search-icon {
    position: absolute;
    left: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1.25rem;
}

/* --- Professional Tool Cards --- */
.tool-card {
    background: #ffffff !important;
    /* Force white for clarity */
    border: 1px solid var(--bs-border-color);
    border-radius: 1.25rem;
    padding: 2rem;
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s ease-out, box-shadow 0.2s ease-out, border-color 0.2s ease-out;
    will-change: transform, box-shadow;
    text-decoration: none !important;
    position: relative;
    box-shadow: var(--shadow-sm);
}

.tool-card:hover {
    border-color: var(--bs-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.tool-card:hover .card-title {
    color: var(--bs-primary) !important;
}

.card-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--bs-body-color);
}

.card-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
    flex-grow: 1;
}

/* --- Hero Section (Clean) --- */
.hero-section {
    padding: 80px 0 60px;
    background-color: var(--bg-hero);
    border-bottom: 1px solid var(--bs-border-color);
}

.glass-search-box {
    background: white;
    border: 1px solid var(--bs-border-color);
    padding: 8px;
    border-radius: 50px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.glass-search-box:focus-within {
    border-color: var(--bs-primary);
    box-shadow: var(--shadow-lg);
}

.search-input {
    background: transparent !important;
    border: none !important;
    padding: 0.75rem 1.25rem 0.75rem 3.5rem;
    font-size: 1.1rem;
    box-shadow: none !important;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    background: rgba(79, 70, 229, 0.1);
    color: var(--bs-primary);
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

/* --- Footer Refinement --- */
footer {
    background: var(--bg-surface);
    border-top: 2px solid var(--bs-border-color);
    padding: 60px 0 30px;
}


/* --- Mobile Responsiveness --- */
@media (max-width: 768px) {
    .display-3 {
        font-size: 2.5rem;
    }

    .hero-section {
        padding: 60px 0;
    }

    .tool-card {
        padding: 1.25rem;
    }
}

/* --- Global Form Clarity Enhancements --- */
.form-label {
    color: var(--text-dark) !important;
    font-weight: 700 !important;
    font-size: 0.95rem !important;
    margin-bottom: 0.5rem;
    display: block;
}

.form-control,
.form-select {
    border: 2px solid #e2e8f0 !important;
    color: var(--text-dark) !important;
    font-weight: 500;
}

.form-control::placeholder {
    color: #94a3b8 !important;
    opacity: 1;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--bs-primary) !important;
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1) !important;
}

.result-card {
    background: #f8fafc;
    border: 1px solid var(--bs-border-color);
    border-radius: 1.25rem;
    padding: 2.5rem;
}

/* Tool Header Icons (For Individual Pages) */
.icon-header-wrapper {
    width: 100px;
    height: 100px;
    background: var(--bg-surface);
    color: var(--bs-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 2rem;
    margin: 0 auto 2rem;
    font-size: 3rem;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--bs-border-color);
}