/* ================================================================
   SolveItLocal — Design System & Homepage Styles (Mobile-First)
   ================================================================ */

/* -- Design Tokens (HSL) ------------------------------------------ */
:root {
    /* Background layers */
    --bg-deep:        hsl(223, 60%, 6%);      /* #060b18 */
    --bg-surface:     hsl(222, 47%, 11%);     /* #0f172a */
    --bg-card:        hsla(222, 47%, 11%, 0.6);
    --bg-card-hover:  hsla(217, 33%, 17%, 0.8); /* #1e293b */

    /* Text */
    --text-primary:   hsl(210, 40%, 98%);     /* #f1f5f9 */
    --text-secondary: hsl(215, 20%, 65%);     /* #94a3b8 */
    --text-muted:     hsl(215, 15%, 47%);     /* #64748b */

    /* Brand gradient */
    --accent-from:    hsl(198, 93%, 60%);     /* #38bdf8 */
    --accent-to:      hsl(234, 89%, 74%);     /* #818cf8 */
    --accent-solid:   hsl(198, 93%, 60%);

    /* Borders & Surfaces */
    --border-subtle:  hsla(215, 20%, 65%, 0.1);
    --border-hover:   hsla(198, 93%, 60%, 0.4);
    --glass-blur:     12px;

    /* Patreon */
    --patreon-red:    hsl(356, 100%, 63%);    /* #ff424d */
    --patreon-glow:   hsla(356, 100%, 63%, 0.12);

    /* Category colors */
    --cat-finance:    hsl(38, 92%, 50%);      /* #f59e0b */
    --cat-diy:        hsl(24, 98%, 53%);      /* #f97316 */
    --cat-auto:       hsl(0, 84%, 60%);       /* #ef4444 */
    --cat-content:    hsl(279, 90%, 65%);     /* #a855f7 */
    --cat-events:     hsl(330, 81%, 60%);     /* #ec4899 */
    --cat-craft:      hsl(174, 80%, 40%);     /* #14b8a6 */
    --cat-shipping:   hsl(239, 84%, 67%);     /* #6366f1 */
    --cat-lifestyle:  hsl(142, 71%, 45%);     /* #22c55e */
    --cat-culinary:   hsl(28, 90%, 55%);      /* #e8842b */
    --cat-science:    hsl(187, 72%, 48%);     /* #22b8cf */

    /* Layout */
    --max-width:      1280px;
    --radius-sm:      8px;
    --radius-md:      12px;
    --radius-lg:      16px;
    --radius-pill:    100px;
}

/* -- Reset -------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

/* Native Hidden Attribute Enforcement */
[hidden] {
    display: none !important;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-deep);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

/* ================================================================
   HERO
   ================================================================ */
.hero {
    position: relative;
    padding: 3rem 1.25rem 2rem;
    text-align: center;
    background:
        radial-gradient(ellipse 80% 50% at 50% 0%, hsla(198, 93%, 60%, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 80% 10%, hsla(234, 89%, 74%, 0.06) 0%, transparent 50%),
        var(--bg-deep);
    border-bottom: 1px solid var(--border-subtle);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, hsla(198, 93%, 60%, 0.05) 0%, transparent 70%);
    pointer-events: none;
}

.hero-inner {
    max-width: 720px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-family: 'Outfit', system-ui, sans-serif;
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, var(--accent-from), var(--accent-to));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-highlight {
    -webkit-text-fill-color: transparent;
}

/* -- Theme Toggle (Homepage) -------------------------------------- */
.hero-top-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--accent-solid);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0;
    backdrop-filter: blur(var(--glass-blur));
    flex-shrink: 0;
}

.theme-toggle:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: scale(1.1);
}

/* Show sun in dark mode, moon in light mode */
[data-theme="dark"] .theme-icon--sun,
:root:not([data-theme]) .theme-icon--sun { display: block; }
[data-theme="dark"] .theme-icon--moon,
:root:not([data-theme]) .theme-icon--moon { display: none; }

[data-theme="light"] .theme-icon--sun { display: none; }
[data-theme="light"] .theme-icon--moon { display: block; }

.hero-tagline {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.hero-tagline br {
    display: none;
}

/* -- Search ------------------------------------------------------- */
.search-wrapper {
    position: relative;
    max-width: 520px;
    margin: 0 auto;
}

.search-icon {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-muted);
    pointer-events: none;
    transition: color 0.25s ease;
}

#searchInput {
    width: 100%;
    padding: 1rem 1.25rem 1rem 3.25rem;
    font-size: 1rem;
    font-family: inherit;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-pill);
    color: var(--text-primary);
    backdrop-filter: blur(var(--glass-blur));
    transition: border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
                box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                background 0.3s ease;
}

#searchInput::placeholder {
    color: var(--text-muted);
}

#searchInput:focus {
    outline: none;
    background: var(--bg-surface);
    border-color: var(--accent-solid);
    box-shadow: 0 0 0 4px hsla(198, 93%, 60%, 0.15), 0 8px 24px hsla(198, 93%, 60%, 0.1);
}

.search-wrapper:focus-within .search-icon {
    color: var(--accent-solid);
}

/* -- Ad Placeholders ---------------------------------------------- */
.ad-placeholder {
    border: 1px dashed var(--border-subtle);
    color: var(--text-muted);
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 1.5rem auto 0;
    border-radius: var(--radius-sm);
    background: hsla(222, 47%, 11%, 0.3);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.ad-desktop {
    display: none;
    width: 728px;
    height: 90px;
    max-width: 100%;
}

.ad-mobile {
    display: flex;
    width: 320px;
    height: 50px;
}

/* ================================================================
   PATREON STRIP
   ================================================================ */
.patreon-strip {
    background: var(--patreon-glow);
    border-bottom: 1px solid hsla(356, 100%, 63%, 0.15);
}

.patreon-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1rem;
}

.patreon-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.patreon-text strong {
    color: var(--text-primary);
}

.patreon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--patreon-red);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
    transition: background-color 0.2s, transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.2s;
}

.patreon-btn:hover, .patreon-btn:focus-visible {
    background: hsl(356, 80%, 55%);
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 4px 12px hsla(356, 100%, 63%, 0.3);
    outline: none;
}

.patreon-icon {
    width: 18px;
    height: 18px;
}

/* ================================================================
   MAIN CONTAINER
   ================================================================ */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1.5rem 1rem;
    flex: 1;
}

/* ================================================================
   CATEGORY PILLS
   ================================================================ */
.category-nav {
    margin-bottom: 2rem;
    position: relative;
}

.pills-track {
    display: flex;
    gap: 0.5rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
    scrollbar-width: thin;
    scrollbar-color: var(--border-subtle) transparent;
    -webkit-overflow-scrolling: touch;
}

.pills-track::-webkit-scrollbar {
    height: 4px;
}
.pills-track::-webkit-scrollbar-track {
    background: transparent;
}
.pills-track::-webkit-scrollbar-thumb {
    background: var(--border-subtle);
    border-radius: 2px;
}

.pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    font-weight: 500;
    font-family: inherit;
    color: var(--text-secondary);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-pill);
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(var(--glass-blur));
}

.pill:hover, .pill:focus-visible {
    color: var(--text-primary);
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    outline: none;
    transform: translateY(-1px);
}

.pill.active {
    color: var(--bg-deep);
    background: linear-gradient(135deg, var(--accent-from), var(--accent-to));
    border-color: transparent;
    font-weight: 700;
    box-shadow: 0 4px 12px hsla(198, 93%, 60%, 0.25);
    transform: scale(1.05);
}

.pill-count {
    font-size: 0.75rem;
    opacity: 0.8;
}

/* ================================================================
   CATEGORY SECTIONS
   ================================================================ */
.category-section {
    margin-bottom: 3rem;
    animation: fadeInUp 0.4s ease-out backwards;
}

.category-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-subtle);
}

.category-emoji {
    font-size: 1.5rem;
    line-height: 1;
}

.category-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.category-count {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-left: auto;
}

/* Search Flat Grid Mode */
#toolsContainer.is-searching {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
#toolsContainer.is-searching .category-section {
    margin-bottom: 0;
}
#toolsContainer.is-searching .category-header {
    display: none !important;
}

/* ================================================================
   TOOL CARDS GRID
   ================================================================ */
.tools-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.tool-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
    border-radius: var(--radius-md);
    outline: none;
}

.tool-card-link:focus-visible {
    outline: 2px solid var(--accent-solid);
    outline-offset: 4px;
}

.tool-card {
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    backdrop-filter: blur(var(--glass-blur));
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), 
                box-shadow 0.3s ease, 
                border-color 0.3s ease,
                background 0.3s ease;
    overflow: hidden;
}

.tool-card::after {
    content: '→';
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 1.2rem;
    color: var(--accent-solid);
    opacity: 0;
    transform: translateX(-10px);
    transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.tool-card-link:hover .tool-card,
.tool-card-link:focus-visible .tool-card {
    transform: translateY(-4px) scale(1.01);
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    box-shadow: 0 12px 40px -10px rgba(0, 0, 0, 0.6), 0 0 0 1px hsla(198, 93%, 60%, 0.15);
}

.tool-card-link:hover .tool-card::after,
.tool-card-link:focus-visible .tool-card::after {
    opacity: 1;
    transform: translateX(0);
}

.tool-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-pill);
    margin-bottom: 0.85rem;
    width: fit-content;
}

/* Category-specific badge colors */
.badge-finance      { background: hsla(38, 92%, 50%, 0.15); color: var(--cat-finance); }
.badge-diy          { background: hsla(24, 98%, 53%, 0.15); color: var(--cat-diy); }
.badge-auto         { background: hsla(0, 84%, 60%, 0.15);  color: var(--cat-auto); }
.badge-content      { background: hsla(279, 90%, 65%, 0.15); color: var(--cat-content); }
.badge-events       { background: hsla(330, 81%, 60%, 0.15); color: var(--cat-events); }
.badge-craft        { background: hsla(174, 80%, 40%, 0.15); color: var(--cat-craft); }
.badge-shipping     { background: hsla(239, 84%, 67%, 0.15); color: var(--cat-shipping); }
.badge-lifestyle    { background: hsla(142, 71%, 45%, 0.15);  color: var(--cat-lifestyle); }
.badge-culinary     { background: hsla(28, 90%, 55%, 0.15);   color: var(--cat-culinary); }
.badge-science      { background: hsla(187, 72%, 48%, 0.15);  color: var(--cat-science); }

.tool-name {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.tool-card-link:hover .tool-name,
.tool-card-link:focus-visible .tool-name {
    color: var(--accent-solid);
}

.tool-tagline {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.5;
    flex-grow: 1;
}

/* ================================================================
   NO RESULTS
   ================================================================ */
.no-results {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
    font-size: 1.15rem;
    animation: fadeInUp 0.3s ease-out;
}

.no-results-emoji {
    font-size: 3.5rem;
    display: block;
    margin-bottom: 1rem;
}

/* ================================================================
   FOOTER
   ================================================================ */
.site-footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-subtle);
    margin-top: auto;
}

/* ================================================================
   ANIMATIONS
   ================================================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ================================================================
   RESPONSIVE (Min-Width Mobile First)
   ================================================================ */

@media (min-width: 600px) {
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .hero {
        padding: 5rem 2rem 3rem;
    }

    .hero-tagline br {
        display: inline;
    }
    
    .ad-desktop {
        display: flex;
    }
    
    .ad-mobile {
        display: none;
    }

    .patreon-inner {
        flex-direction: row;
        text-align: left;
        justify-content: space-between;
    }

    .patreon-btn {
        width: auto;
    }

    .container {
        padding: 2rem;
    }

    .category-header {
        gap: 0.75rem;
    }

    .category-title {
        font-size: 1.25rem;
    }
}

@media (min-width: 1024px) {
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

/* ================================================================
   LIGHT MODE (Homepage)
   Triggered by [data-theme="light"] on <html>
   ================================================================ */
[data-theme="light"] {
    /* Background layers */
    --bg-deep:        hsl(210, 40%, 98%);      /* Chalk #f8fafc */
    --bg-surface:     hsl(210, 40%, 96%);     /* Starlight #f1f5f9 */
    --bg-card:        hsla(210, 40%, 96%, 0.8);
    --bg-card-hover:  hsla(214, 32%, 91%, 0.9); /* Mist #e2e8f0 */

    /* Text */
    --text-primary:   hsl(222, 47%, 11%);     /* Dark Matter #0f172a */
    --text-secondary: hsl(215, 19%, 35%);     /* Graphite #475569 */
    --text-muted:     hsl(215, 16%, 47%);     /* Iron #64748b */

    /* Borders & Surfaces */
    --border-subtle:  hsla(213, 27%, 84%, 0.6);
    --border-hover:   hsla(198, 93%, 50%, 0.4);

    /* Patreon */
    --patreon-glow:   hsla(356, 100%, 63%, 0.06);
}

/* Hero section light mode */
[data-theme="light"] .hero {
    background:
        radial-gradient(ellipse 80% 50% at 50% 0%, hsla(198, 93%, 60%, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 80% 10%, hsla(234, 89%, 74%, 0.04) 0%, transparent 50%),
        var(--bg-deep);
}

[data-theme="light"] .hero::before {
    background: radial-gradient(circle, hsla(198, 93%, 60%, 0.03) 0%, transparent 70%);
}

/* Search input light mode */
[data-theme="light"] #searchInput {
    background: rgba(255, 255, 255, 0.8);
    border-color: hsla(213, 27%, 84%, 0.8);
    color: var(--text-primary);
}

[data-theme="light"] #searchInput::placeholder {
    color: var(--text-muted);
}

[data-theme="light"] #searchInput:focus {
    background: #ffffff;
    border-color: hsl(198, 93%, 50%);
    box-shadow: 0 0 0 4px hsla(198, 93%, 60%, 0.1), 0 8px 24px hsla(198, 93%, 60%, 0.05);
}

/* Card hover shadows */
[data-theme="light"] .tool-card-link:hover .tool-card,
[data-theme="light"] .tool-card-link:focus-visible .tool-card {
    box-shadow: 0 12px 40px -10px rgba(0, 0, 0, 0.1), 0 0 0 1px hsla(198, 93%, 60%, 0.15);
}

/* Patreon button in light mode */
[data-theme="light"] .patreon-strip {
    background: hsla(356, 100%, 63%, 0.04);
    border-bottom-color: hsla(356, 100%, 63%, 0.1);
}

/* Ad placeholders */
[data-theme="light"] .ad-placeholder {
    border-color: hsla(213, 27%, 84%, 0.6);
    background: hsla(210, 40%, 96%, 0.5);
}

/* Footer light mode */
[data-theme="light"] .site-footer {
    border-top-color: hsla(213, 27%, 84%, 0.6);
}