/* ============================================
   Badpour Designs LLC — Main Stylesheet
   ============================================ */

/* ----- CSS Custom Properties ----- */
:root {
    /* Colors — all pairs meet WCAG 4.5:1 contrast minimum */
    --color-primary: #1a5276; /* Dark blue — primary brand */
    --color-primary-light: #2980b9; /* Lighter blue — hover states */
    --color-accent: #c0392b; /* Red accent */
    --color-text: #1c1c1c; /* Near-black body text on white → ~16:1 */
    --color-text-light: #4a4a4a; /* Secondary text on white → ~7.7:1 */
    --color-bg: #ffffff;
    --color-bg-alt: #f4f6f7; /* Subtle section background */
    --color-border: #d5dbdb;
    --color-link: #1a5276; /* Same as primary — on white → ~7.5:1 */
    --color-link-hover: #2980b9;
    --color-external: #6c3483; /* Purple for external links on white → ~6.4:1 */
    --color-footer-bg: #1c2833;
    --color-footer-text: #eaecee; /* Light text on dark footer → ~12:1 */

    /* Typography */
    --font-family-base: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-family-heading:
        "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-size-base: 1rem; /* 16px default */
    --font-size-sm: 0.875rem; /* 14px */
    --font-size-lg: 1.125rem; /* 18px */
    --font-size-xl: 1.5rem; /* 24px */
    --font-size-2xl: 2rem; /* 32px */
    --font-size-3xl: 2.5rem; /* 40px */
    --line-height-base: 1.6;
    --line-height-heading: 1.2;

    /* Spacing (rem-based for zoom support) */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Layout */
    --max-width: 72rem; /* 1152px */
    --border-radius: 0.375rem;

    /* Breakpoints (for reference — used in media queries) */
    /* --bp-sm: 480px  */
    /* --bp-md: 768px  */
    /* --bp-lg: 1024px */
}

/* ----- CSS Reset / Normalize ----- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 100%; /* Respect user browser settings */
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

ul,
ol {
    list-style: none;
}

a {
    color: var(--color-link);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--color-link-hover);
    text-decoration: underline;
}

button {
    font: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ----- Typography ----- */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-family-heading);
    line-height: var(--line-height-heading);
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

h1 {
    font-size: var(--font-size-3xl);
}
h2 {
    font-size: var(--font-size-2xl);
}
h3 {
    font-size: var(--font-size-xl);
}
h4 {
    font-size: var(--font-size-lg);
}

p {
    margin-bottom: var(--space-md);
}

/* Screen-reader only utility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ----- Focus Indicators ----- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 3px solid var(--color-primary-light);
    outline-offset: 2px;
    border-radius: var(--border-radius);
}

/* ----- Base Layout ----- */
main {
    flex: 1;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-xl) var(--space-md);
}

/* Container utility */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding-left: var(--space-md);
    padding-right: var(--space-md);
}

/* ----- External Link Styling ----- */
.external-link {
    color: var(--color-external);
}

.external-link:hover {
    color: var(--color-primary-light);
}

.external-link::after {
    content: "";
    display: inline-block;
    width: 0.75em;
    height: 0.75em;
    margin-left: 0.25em;
    vertical-align: middle;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236c3483' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6'/%3E%3Cpolyline points='15 3 21 3 21 9'/%3E%3Cline x1='10' y1='14' x2='21' y2='3'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
}

/* ----- Responsive Layout ----- */

/* Mobile-first: single column by default (< 768px) */
/* All content stacks vertically via the flex-direction: column on body */

/* Tablet and up */
@media (min-width: 768px) {
    main {
        padding: var(--space-2xl) var(--space-xl);
    }

    h1 {
        font-size: calc(var(--font-size-3xl) * 1.15);
    }
    h2 {
        font-size: calc(var(--font-size-2xl) * 1.1);
    }
}

/* Desktop */
@media (min-width: 1024px) {
    main {
        padding: var(--space-3xl) var(--space-xl);
    }
}

/* ============================================
   Navigation Bar
   ============================================ */
nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-sm) var(--space-md);
}

.brand {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
}

.brand:hover {
    color: var(--color-primary-light);
    text-decoration: none;
}

/* ----- Mobile Menu Toggle (< 768px) ----- */
.menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    border-radius: var(--border-radius);
}

.menu-toggle:hover {
    background-color: var(--color-bg-alt);
}

/* ----- Nav Links ----- */
.nav-links {
    display: none;
    flex-direction: column;
    width: 100%;
    gap: 0;
    padding: var(--space-sm) 0;
}

.nav-links.menu-open {
    display: flex;
}

.nav-links li a {
    display: block;
    padding: var(--space-sm) var(--space-md);
    color: var(--color-text);
    border-radius: var(--border-radius);
    transition:
        background-color 0.2s ease,
        color 0.2s ease;
}

.nav-links li a:hover {
    background-color: var(--color-bg-alt);
    color: var(--color-primary);
    text-decoration: none;
}

/* Active page indicator */
.nav-links li a.active {
    color: var(--color-primary);
    font-weight: 600;
    border-bottom: 2px solid var(--color-primary);
}

/* ----- Desktop Navigation (≥ 768px) ----- */
@media (min-width: 768px) {
    .menu-toggle {
        display: none;
    }

    .nav-links {
        display: flex;
        flex-direction: row;
        width: auto;
        padding: 0;
        gap: var(--space-sm);
    }

    .nav-links li a {
        padding: var(--space-xs) var(--space-sm);
    }
}

/* ============================================
   Header
   ============================================ */
header {
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

/* ============================================
   Footer
   ============================================ */
footer {
    background-color: var(--color-footer-bg);
    color: var(--color-footer-text);
    padding: var(--space-xl) var(--space-md);
    margin-top: auto;
}

footer p {
    text-align: center;
    margin-bottom: var(--space-md);
    font-size: var(--font-size-sm);
}

.store-links {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.store-links a {
    color: var(--color-footer-text);
    text-decoration: underline;
    transition: color 0.2s ease;
}

.store-links a:hover {
    color: var(--color-primary-light);
}

/* Override external-link icon color in footer for visibility */
footer .external-link::after {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23eaecee' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6'/%3E%3Cpolyline points='15 3 21 3 21 9'/%3E%3Cline x1='10' y1='14' x2='21' y2='3'/%3E%3C/svg%3E");
}

/* ----- Footer Focus Indicators ----- */
footer a:focus-visible {
    outline-color: var(--color-footer-text);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    text-align: center;
    padding: var(--space-2xl) var(--space-md);
    margin-bottom: var(--space-2xl);
}

.hero h1 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-md);
}

.hero__tagline {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    max-width: 40rem;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .hero {
        padding: var(--space-3xl) var(--space-md);
    }

    .hero h1 {
        font-size: calc(var(--font-size-3xl) * 1.3);
    }

    .hero__tagline {
        font-size: var(--font-size-xl);
    }
}

/* ============================================
   Category Summaries
   ============================================ */
.category-summaries {
    margin-bottom: var(--space-2xl);
}

.category-summaries h2 {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.category-summaries__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

@media (min-width: 768px) {
    .category-summaries__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ============================================
   Product Card
   ============================================ */
.product-card {
    display: block;
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--space-lg);
    text-decoration: none;
    color: var(--color-text);
    transition:
        box-shadow 0.2s ease,
        transform 0.2s ease;
}

.product-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
    text-decoration: none;
    color: var(--color-text);
}

.product-card__name {
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.product-card__description {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    margin-bottom: 0;
}

.product-card__status {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius);
    margin-top: var(--space-sm);
}

.product-card__status--available {
    background-color: #d5f5e3;
    color: #1e8449;
}

.product-card__status--in-development {
    background-color: #fdebd0;
    color: #b9770e;
}

.product-card__link {
    display: inline-block;
    margin-top: var(--space-md);
    font-weight: 600;
}

/* ============================================
   Products & Software Page Grids
   ============================================ */
.products__grid,
.software__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

@media (min-width: 768px) {
    .products__grid,
    .software__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}