/* ===========================================
   ARC DESIGN SYSTEM
   Inspired by AlternativeTo.net
   =========================================== */

/* Color Palette */
:root {
    /* Background Colors */
    --color-bg-body: #f5f7f9;
    /* Light gray body background */
    --color-bg-card: #ffffff;
    /* White cards for contrast */
    --color-bg-card-hover: #fafbfc;
    /* Subtle hover state */

    /* Accent Colors */
    --color-primary: #06a0ff;
    /* Primary blue */
    --color-primary-dark: #0087d2;
    /* Darker blue for hover */

    /* Text Colors */
    --color-text-primary: #2d3436;
    /* Dark gray for headings */
    --color-text-secondary: #636e72;
    /* Medium gray for body */
    --color-text-muted: #b2bec3;
    /* Light gray for subtle text */

    /* Border Colors */
    --color-border-light: #e1e8ed;
    /* Light borders */
    --color-border-medium: #dfe6e9;
    /* Medium borders */

    /* Tag/Pill Colors */
    --color-tag-bg: #f0f3f5;
    /* Light gray for tags */
    --color-tag-text: #636e72;
    /* Medium gray text */
    --color-tag-primary-bg: #e3f2fd;
    /* Light blue for primary tags */
    --color-tag-primary-text: #0087d2;
    /* Dark blue text */

    /* Spacing Scale */
    --spacing-xs: 0.5rem;
    /* 8px */
    --spacing-sm: 0.75rem;
    /* 12px */
    --spacing-md: 1rem;
    /* 16px */
    --spacing-lg: 1.5rem;
    /* 24px */
    --spacing-xl: 2rem;
    /* 32px */
    --spacing-2xl: 3rem;
    /* 48px */

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-pill: 999px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

    /* Typography */
    --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-size-xs: 0.75rem;
    /* 12px */
    --font-size-sm: 0.875rem;
    /* 14px */
    --font-size-base: 1rem;
    /* 16px */
    --font-size-lg: 1.125rem;
    /* 18px */
    --font-size-xl: 1.25rem;
    /* 20px */
    --font-size-2xl: 1.5rem;
    /* 24px */
    --font-size-3xl: 2rem;
    /* 32px */

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
}

/* ===========================================
   PHONE CARD COMPONENTS
   =========================================== */

/* Phone Guide Cards - Modern Design */
.phone-guide-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    /* 16px rounded corners */
    padding: var(--spacing-lg);
    /* 24px padding */
    transition: all 0.2s ease;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.phone-guide-card:hover {
    transform: translateY(-2px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    background: var(--color-bg-card-hover);
    text-decoration: none;
}

.phone-card-header {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* Brand Badge - Pill Style */
.brand-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-tag-primary-bg);
    color: var(--color-tag-primary-text);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    align-self: flex-start;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: var(--radius-pill);
    /* Pill shape */
}

.phone-card-header h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin: 0;
    line-height: 1.3;
}

/* Feature Tags - Pill Style */
.phone-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.phone-features span {
    background: var(--color-tag-bg);
    color: var(--color-tag-text);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-pill);
    /* Pill shape */
    font-weight: var(--font-weight-medium);
}

/* Stats Section */
.phone-stats {
    display: flex;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border-light);
}

/* ===========================================
   SKIP TO CONTENT LINK
   =========================================== */

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    border-radius: 0 0 var(--radius-sm) 0;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* ===========================================
   RESPONSIVE DESIGN
   =========================================== */

@media (max-width: 640px) {
    .products-grid {
        grid-template-columns: 1fr;
    }

    .phone-guide-card {
        padding: var(--spacing-md);
    }
}