/* ==========================================================================
   DESIGN SYSTEM & VARIABLES
   ========================================================================== */
:root {
    /* Fonts */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

    /* Transition defaults */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Category Colors */
    --color-productivity: #4285f4;
    --color-developer: #a142f4;
    --color-creative: #f43f5e;
    --color-lifestyle: #10b981;
}

/* Dark Theme (Default) */
.dark-theme {
    --bg-primary: #0a0b10;
    --bg-secondary: #12131a;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --card-bg: rgba(20, 22, 32, 0.5);
    --card-border: rgba(255, 255, 255, 0.08);
    --card-hover-border: rgba(255, 255, 255, 0.2);
    --card-hover-bg: rgba(28, 30, 43, 0.7);
    
    --glow-opacity: 0.15;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.8);
    
    --input-bg: rgba(255, 255, 255, 0.05);
    --input-border: rgba(255, 255, 255, 0.1);
    --input-focus-border: var(--color-productivity);
    
    --btn-secondary-bg: rgba(255, 255, 255, 0.06);
    --btn-secondary-hover: rgba(255, 255, 255, 0.12);
    
    --modal-bg: rgba(15, 17, 26, 0.9);
    --modal-border: rgba(255, 255, 255, 0.12);
    --modal-backdrop-bg: rgba(0, 0, 0, 0.8);
}

/* Light Theme */
.light-theme {
    --bg-primary: #f6f8fc;
    --bg-secondary: #ffffff;
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    
    --card-bg: rgba(255, 255, 255, 0.75);
    --card-border: rgba(0, 0, 0, 0.06);
    --card-hover-border: rgba(66, 133, 244, 0.4);
    --card-hover-bg: #ffffff;
    
    --glow-opacity: 0.06;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 32px rgba(0, 0, 0, 0.12);
    
    --input-bg: rgba(0, 0, 0, 0.03);
    --input-border: rgba(0, 0, 0, 0.08);
    --input-focus-border: var(--color-productivity);
    
    --btn-secondary-bg: rgba(0, 0, 0, 0.05);
    --btn-secondary-hover: rgba(0, 0, 0, 0.1);
    
    --modal-bg: rgba(255, 255, 255, 0.95);
    --modal-border: rgba(0, 0, 0, 0.08);
    --modal-backdrop-bg: rgba(15, 17, 26, 0.4);
}

/* ==========================================================================
   RESET & BASIC STYLES
   ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    position: relative;
    line-height: 1.5;
}

/* Background Glow Bubbles */
.bg-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(140px);
    opacity: var(--glow-opacity);
    z-index: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.bg-glow-1 {
    top: -10%;
    left: 10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--color-productivity), transparent 70%);
}

.bg-glow-2 {
    top: 40%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-developer), transparent 70%);
}

.bg-glow-3 {
    bottom: -10%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--color-creative), transparent 70%);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    position: relative;
    z-index: 1;
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--card-border);
}

.brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.brand-logo {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--color-productivity), var(--color-developer));
    color: white;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(66, 133, 244, 0.3);
}

.brand-text h1 {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-text .subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.btn-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--card-border);
    background-color: var(--btn-secondary-bg);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    background-color: var(--btn-secondary-hover);
    transform: translateY(-2px);
    border-color: var(--card-hover-border);
}

.btn-icon svg {
    width: 20px;
    height: 20px;
}

.dark-theme .icon-sun { display: block; }
.dark-theme .icon-moon { display: none; }
.light-theme .icon-sun { display: none; }
.light-theme .icon-moon { display: block; }

/* ==========================================================================
   STATS BANNER
   ========================================================================== */
.stats-banner {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 16px;
    padding: 1.5rem;
    text-align: center;
    transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--card-hover-border);
}

.stat-num {
    display: block;
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--color-productivity), var(--color-developer));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ==========================================================================
   TOOLBAR (SEARCH & FILTERS)
   ========================================================================== */
.toolbar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

@media (min-width: 900px) {
    .toolbar {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.search-wrapper {
    position: relative;
    flex: 1;
    max-width: 500px;
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-muted);
    pointer-events: none;
}

.search-wrapper input {
    width: 100%;
    padding: 0.8rem 1rem 0.8rem 2.8rem;
    border-radius: 12px;
    border: 1px solid var(--input-border);
    background-color: var(--input-bg);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.search-wrapper input:focus {
    outline: none;
    border-color: var(--input-focus-border);
    background-color: var(--bg-secondary);
    box-shadow: 0 0 0 3px rgba(66, 133, 244, 0.15);
}

.clear-btn {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
}

.clear-btn:hover {
    color: var(--text-primary);
}

.filter-wrapper {
    display: flex;
    gap: 0.5rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
    scrollbar-width: none; /* Firefox */
}

.filter-wrapper::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

.filter-tab {
    padding: 0.6rem 1.2rem;
    border-radius: 30px;
    border: 1px solid var(--card-border);
    background-color: var(--card-bg);
    color: var(--text-secondary);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition-fast);
}

.filter-tab:hover {
    background-color: var(--btn-secondary-hover);
    color: var(--text-primary);
    border-color: var(--card-hover-border);
}

.filter-tab.active {
    background: linear-gradient(135deg, var(--color-productivity), var(--color-developer));
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(161, 66, 244, 0.2);
}

/* ==========================================================================
   BENEFITS GRID
   ========================================================================== */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 4rem;
}

/* Card Style */
.benefit-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 1.75rem;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 250px;
    transition: all var(--transition-normal);
}

.benefit-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--theme-color, var(--color-productivity));
    opacity: 0.8;
}

.benefit-card:hover {
    transform: translateY(-6px);
    background-color: var(--card-hover-bg);
    border-color: var(--card-hover-border);
    box-shadow: var(--shadow-md), 0 10px 30px rgba(0, 0, 0, 0.1);
}

.card-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.25rem;
}

.card-icon-container {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--card-border);
    color: var(--theme-color);
    transition: transform var(--transition-normal);
}

.benefit-card:hover .card-icon-container {
    transform: scale(1.1) rotate(5deg);
}

.card-icon-container svg {
    width: 24px;
    height: 24px;
}

.category-tag {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    color: white;
    background-color: var(--theme-color);
}

.card-middle {
    flex-grow: 1;
    margin-bottom: 1.5rem;
}

.card-middle h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.card-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.card-subtext {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.btn-card-action {
    background: none;
    border: none;
    color: var(--theme-color);
    font-weight: 600;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    cursor: pointer;
    transition: gap var(--transition-fast);
}

.benefit-card:hover .btn-card-action {
    gap: 0.5rem;
}

.btn-card-action svg {
    width: 14px;
    height: 14px;
    transition: transform var(--transition-fast);
}

/* Skeletons */
.skeleton-card {
    height: 250px;
    background: linear-gradient(90deg, var(--card-bg) 25%, var(--btn-secondary-hover) 50%, var(--card-bg) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 20px;
    border: 1px solid var(--card-border);
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--card-bg);
    border: 1px dashed var(--card-border);
    border-radius: 20px;
}

.empty-icon {
    width: 48px;
    height: 48px;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.empty-state h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

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

/* ==========================================================================
   MODAL DIALOG
   ========================================================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.modal.active {
    opacity: 1;
    pointer-events: all;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--modal-backdrop-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.modal-content {
    background-color: var(--modal-bg);
    border: 1px solid var(--modal-border);
    border-radius: 24px;
    width: 90%;
    max-width: 600px;
    padding: 2.5rem;
    position: relative;
    z-index: 2;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-lg);
    max-height: 90vh;
    overflow-y: auto;
}

.modal.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 0.5;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-header-section {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    align-items: center;
}

.modal-icon-container {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--card-border);
    color: var(--theme-color);
}

.modal-icon-container svg {
    width: 32px;
    height: 32px;
}

.modal-header-text h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 0.25rem;
}

.modal-subtitle {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.modal-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    color: white;
    background-color: var(--theme-color);
    margin-bottom: 0.5rem;
}

.modal-body-section {
    margin-bottom: 2rem;
}

.info-block {
    margin-bottom: 1.5rem;
}

.info-block h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.info-block p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.modal-features-list {
    list-style: none;
}

.modal-features-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.92rem;
    color: var(--text-secondary);
}

.modal-features-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--theme-color);
    font-weight: bold;
}

.modal-meta-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    border-top: 1px solid var(--card-border);
    padding-top: 1.5rem;
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.meta-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.meta-value {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-primary);
}

.meta-value.highlight {
    color: var(--theme-color);
}

.modal-footer-section {
    border-top: 1px solid var(--card-border);
    padding-top: 1.5rem;
    display: flex;
    justify-content: flex-end;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-productivity), var(--color-developer));
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.75rem 1.75rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 12px rgba(161, 66, 244, 0.3);
    transition: all var(--transition-normal);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(161, 66, 244, 0.4);
}

.arrow-icon {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.btn-primary:hover .arrow-icon {
    transform: translateX(3px);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid var(--card-border);
    color: var(--text-muted);
    font-size: 0.85rem;
}