/* === CSS Custom Properties (Variables) === */
:root {
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Open Sans', sans-serif;

    /* BRAND COLORS - CHOOSE YOURS! */
    --color-brand-primary: #007bff; /* Example: Professional Blue */
    --color-brand-secondary: #0056b3; /* Darker shade of primary for hovers */
    --color-brand-accent: #ffc107;  /* Example: Bright Yellow/Orange for "FREE" highlights */

    /* TEXT COLORS */
    --color-text-primary: #333333;
    --color-text-secondary: #555555;
    --color-text-light: #ffffff;
    --color-text-on-accent: #212529; /* Text color on accent background */

    /* BACKGROUND COLORS */
    --color-bg-light: #ffffff;
    --color-bg-soft-gray: #f8f9fa;
    --color-bg-medium-gray: #e9ecef;
    --color-bg-dark: #343a40;

    /* UI ELEMENTS */
    --border-radius-small: 4px;
    --border-radius-medium: 8px;
    --box-shadow-light: 0 2px 8px rgba(0, 0, 0, 0.08);
    --box-shadow-medium: 0 5px 15px rgba(0, 0, 0, 0.1);

    /* SPACING */
    --spacing-xs: 0.5rem;  /* 8px */
    --spacing-sm: 1rem;    /* 16px */
    --spacing-md: 1.5rem;  /* 24px */
    --spacing-lg: 2.5rem;  /* 40px */
    --spacing-xl: 4rem;    /* 64px */

    /* TRANSITIONS */
    --transition-fast: all 0.2s ease-in-out;
    --transition-medium: all 0.3s ease-in-out;
}

/* === Basic Reset & Global Styles === */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 100%; /* Typically 16px */
}

body {
    font-family: var(--font-secondary);
    line-height: 1.7;
    color: var(--color-text-primary);
    background-color: var(--color-bg-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: clamp(2.2rem, 5vw, 3.2rem); } /* Responsive font size */
h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.3rem, 3vw, 1.75rem); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
}

a {
    color: var(--color-brand-primary);
    text-decoration: none;
    transition: var(--transition-fast);
}

a:hover, a:focus {
    color: var(--color-brand-secondary);
    text-decoration: underline;
}

img, svg {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

button, .tool-button, .cta-button { /* Consistent button base */
    display: inline-block;
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1rem;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius-medium);
    border: 2px solid transparent;
    cursor: pointer;
    text-align: center;
    transition: var(--transition-medium);
    text-decoration: none; /* For <a> styled as buttons */
}

/* Accessibility: Skip Link */
.skip-link {
    position: absolute;
    top: -1000px; /* Hide off-screen */
    left: 0;
    background: var(--color-brand-primary);
    color: var(--color-text-light);
    padding: var(--spacing-sm);
    z-index: 9999;
    text-decoration: none;
}
.skip-link:focus {
    top: 0; /* Bring to screen on focus */
}

/* Accessibility: Visible Focus States */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 3px solid var(--color-brand-secondary);
    outline-offset: 2px;
    box-shadow: 0 0 0 3px var(--color-brand-primary-transparent, rgba(0, 123, 255, 0.25)); /* Fallback or softer glow */
}


/* === Utility Classes === */
.container {
    width: 90%;
    max-width: 1200px; /* Increased max-width for modern feel */
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-sm);
    padding-right: var(--spacing-sm);
}

.highlight-free {
    color: var(--color-brand-accent);
    font-weight: 700;
}

.badge-free, .badge-soon {
    display: inline-block;
    padding: 0.2em 0.6em;
    font-size: 0.75rem;
    font-weight: 700;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: var(--border-radius-small);
    margin-left: var(--spacing-xs);
}
.badge-free {
    background-color: var(--color-brand-accent);
    color: var(--color-text-on-accent);
}
.badge-soon {
    background-color: var(--color-text-secondary);
    color: var(--color-text-light);
}

/* === Header / Navigation === */
.site-header {
    background-color: var(--color-bg-light);
    padding: var(--spacing-sm) 0;
    box-shadow: var(--box-shadow-light);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-brand-primary);
    text-decoration: none;
}
.logo:hover, .logo:focus {
    color: var(--color-brand-secondary);
    text-decoration: none;
}

.main-navigation ul {
    display: flex;
    gap: var(--spacing-md);
}
.main-navigation a {
    font-weight: 600;
    color: var(--color-text-primary);
    padding: var(--spacing-xs) 0;
    position: relative;
    text-decoration: none;
}
.main-navigation a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background-color: var(--color-brand-primary);
    transition: var(--transition-fast);
}
.main-navigation a:hover::after,
.main-navigation a:focus::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none; /* Hidden by default, shown in media query */
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}
.menu-icon-bar {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-text-primary);
    margin: 5px 0;
    transition: var(--transition-fast);
}


/* === Hero Section === */
.hero-section {
    background: linear-gradient(135deg, var(--color-brand-primary), var(--color-brand-secondary)); /* Modern gradient */
    color: var(--color-text-light);
    padding: var(--spacing-xl) 0;
    text-align: center;
    min-height: 75vh; /* Taller hero */
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-content {
    max-width: 800px;
}
.hero-section h1 {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}
.hero-subheading {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-lg);
}
.cta-button.primary-cta {
    background-color: var(--color-brand-accent);
    color: var(--color-text-on-accent);
    font-size: 1.1rem;
    padding: var(--spacing-md) var(--spacing-lg);
    border-color: var(--color-brand-accent);
}
.cta-button.primary-cta:hover,
.cta-button.primary-cta:focus {
    background-color: #ffca2c; /* Slightly darker accent */
    border-color: #ffca2c;
    color: var(--color-text-on-accent);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-medium);
}

/* === Tools Showcase Section === */
.tools-showcase-section, .features-section {
    padding: var(--spacing-xl) 0;
}
.tools-showcase-section h2, .features-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.tool-card {
    background-color: var(--color-bg-light);
    border-radius: var(--border-radius-medium);
    padding: var(--spacing-lg); /* More padding */
    box-shadow: var(--box-shadow-light);
    transition: var(--transition-medium);
    display: flex;
    flex-direction: column;
}
.tool-card:hover, .tool-card:focus-within {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-medium);
}
.tool-card-icon-wrapper {
    margin-bottom: var(--spacing-md);
    /* background-color: var(--color-bg-soft-gray); */
    /* width: 60px; height: 60px; */ /* Uncomment if using fixed size icons */
    /* border-radius: 50%; */
    /* display: flex; align-items: center; justify-content: center; */
}
.tool-icon {
    width: 48px; /* Adjust as needed */
    height: 48px;
    /* color: var(--color-brand-primary); */ /* If using SVG icons that inherit color */
}
.tool-name {
    color: var(--color-brand-primary);
    margin-bottom: var(--spacing-xs);
}
.tool-description {
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
    flex-grow: 1; /* Makes description take available space */
}
.tool-button {
    background-color: var(--color-brand-primary);
    color: var(--color-text-light);
    border-color: var(--color-brand-primary);
    margin-top: auto; /* Pushes button to the bottom */
}
.tool-button:hover, .tool-button:focus {
    background-color: var(--color-brand-secondary);
    border-color: var(--color-brand-secondary);
    color: var(--color-text-light);
    text-decoration: none;
}
.tool-button:disabled {
    background-color: var(--color-bg-medium-gray);
    border-color: var(--color-bg-medium-gray);
    color: var(--color-text-secondary);
    cursor: not-allowed;
}
.tool-card-soon {
    opacity: 0.8;
}

/* === Features (Why Us) Section === */
.features-section {
    background-color: var(--color-bg-soft-gray);
}
.logo-inline { /* For using 5APPS.IN within headings */
    font-family: var(--font-primary); /* Or your logo specific font */
    color: var(--color-brand-primary);
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    text-align: center;
}
.feature-item {
    padding: var(--spacing-md);
}
.feature-icon {
    width: 50px;
    height: 50px;
    margin-bottom: var(--spacing-md);
    margin-left: auto;
    margin-right: auto;
    color: var(--color-brand-primary); /* if SVG */
}
.feature-item h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

/* === Footer === */
.site-footer {
    background-color: var(--color-bg-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    font-size: 0.9rem;
}
.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}
.logo-footer {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-text-light);
    text-decoration: none;
    display: block;
    margin-bottom: var(--spacing-xs);
}
.logo-footer:hover, .logo-footer:focus {
    color: var(--color-brand-accent);
    text-decoration: none;
}
.footer-branding p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}
.footer-links h4, .footer-social h4 {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}
.footer-links ul li {
    margin-bottom: var(--spacing-xs);
}
.footer-links a {
    color: rgba(255, 255, 255, 0.8);
}
.footer-links a:hover, .footer-links a:focus {
    color: var(--color-brand-accent);
    text-decoration: underline;
}
.copyright-text {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
}
.copyright-text .highlight-free {
    color: var(--color-brand-accent); /* ensure it's visible in footer */
}


/* === Responsive Design (Mobile First Approach In Mind) === */

/* Tablet and Smaller Desktops */
@media (max-width: 992px) {
    .hero-section {
        min-height: auto; /* Adjust hero height */
        padding: var(--spacing-lg) 0;
    }
    .tools-grid, .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: var(--spacing-md);
    }
}

/* Mobile Devices */
@media (max-width: 768px) {
    .main-navigation ul {
        display: none; /* Hide nav links by default */
        flex-direction: column;
        position: absolute;
        top: 100%; /* Position below header */
        left: 0;
        width: 100%;
        background-color: var(--color-bg-light);
        box-shadow: var(--box-shadow-light);
        padding: var(--spacing-sm) 0;
        z-index: 999; /* Ensure it's above other content */
    }
    .main-navigation ul.active {
        display: flex; /* Show when active */
    }
    .main-navigation li {
        width: 100%;
        text-align: center;
    }
    .main-navigation a {
        display: block;
        padding: var(--spacing-sm);
        width: 100%;
    }
    .main-navigation a::after { /* Remove underline effect for mobile dropdown */
        display: none;
    }

    .mobile-menu-toggle {
        display: block; /* Show mobile menu button */
    }
    /* JS will toggle .active on .main-navigation ul */
    /* You might want to add styles for an "X" icon when menu is open */
    .mobile-menu-toggle[aria-expanded="true"] .menu-icon-bar:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .mobile-menu-toggle[aria-expanded="true"] .menu-icon-bar:nth-child(2) {
        opacity: 0;
    }
    .mobile-menu-toggle[aria-expanded="true"] .menu-icon-bar:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }


    .hero-section h1 {
        font-size: clamp(1.8rem, 7vw, 2.5rem);
    }
    .hero-subheading {
        font-size: clamp(0.9rem, 4vw, 1.1rem);
    }
    .cta-button.primary-cta {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 1rem;
    }

    .tools-grid {
        grid-template-columns: 1fr; /* Single column for tools on mobile */
    }
    .footer-content {
        grid-template-columns: 1fr; /* Stack footer sections */
        text-align: center;
    }
    .footer-branding, .footer-links, .footer-social {
        margin-bottom: var(--spacing-md);
    }
    .logo-footer {
        margin-left: auto;
        margin-right: auto;
    }
}