/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scrollbar-width: thin;
    scrollbar-color: var(--primary) var(--background);
}

:root {
    /* Color System - Cyber/OSINT Theme */
    --background: #0a0f1c;
    /* Deep dark blue/black */
    --background-lighter: #111827;

    --primary: #00f2ea;
    /* Neon Cyan */
    --primary-dim: rgba(0, 242, 234, 0.1);
    --primary-glow: rgba(0, 242, 234, 0.4);

    --secondary: #7c3aed;
    /* Electric Purple */
    --secondary-hover: #6d28d9;

    --text-main: #f8fafc;
    --text-muted: #94a3b8;

    --card-bg: rgba(17, 24, 39, 0.6);
    --card-border: rgba(255, 255, 255, 0.08);
    /* Brighter border */
    --glass-border: 1px solid rgba(255, 255, 255, 0.1);

    --radius: 12px;
    --font-main: 'Inter', sans-serif;

    /* Animation Speeds */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--background);
}

::-webkit-scrollbar-thumb {
    background: var(--secondary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

body {
    font-family: var(--font-main);
    background-color: var(--background);
    background-image:
        radial-gradient(circle at 15% 50%, rgba(124, 58, 237, 0.08), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(0, 242, 234, 0.08), transparent 25%);
    color: var(--text-main);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Grid Background Overlay */
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: -1;
    mask-image: radial-gradient(circle at center, black 40%, transparent 100%);
}

.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header Styles */
.header {
    position: sticky;
    top: 20px;
    z-index: 100;
    margin: 0 1rem;
    border-radius: 16px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background: rgba(10, 20, 40, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.header.scrolled {
    background: rgba(10, 20, 40, 0.75);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    border-color: rgba(255, 255, 255, 0.15);
}

.header .container {
    padding: 1rem 1.5rem;
}

.header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1.5rem;
}

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

.brand-logo {
    width: 48px;
    height: 48px;
    object-fit: cover;
    border-radius: 50%;
    box-shadow: 0 0 15px rgba(0, 242, 234, 0.3);
    transition: all 0.3s ease;
}

.brand-logo:hover {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 0 25px rgba(0, 242, 234, 0.6);
}

.header-title-group {
    display: flex;
    flex-direction: column;
}

.header-title {
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, #fff, #94a3b8);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-title .text-primary {
    background: linear-gradient(to right, var(--primary), var(--secondary));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.badge {
    display: inline-flex;
    align-items: center;
    border-radius: 99px;
    border: 1px solid var(--primary-glow);
    background: rgba(0, 242, 234, 0.05);
    padding: 0.35rem 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
    box-shadow: 0 0 10px rgba(0, 242, 234, 0.1);
    letter-spacing: 0.05em;
}

/* Search Styles */
/* Search Styles */
.search-wrapper {
    position: relative;
    max-width: 600px;
    flex: 1;
    margin: 0 2rem;
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
    transition: color 0.3s ease;
}

.search-input {
    width: 100%;
    padding: 0.875rem 1rem 0.875rem 3rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    color: var(--text-main);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.search-input:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

.search-input:focus {
    outline: none;
    background: rgba(0, 0, 0, 0.2);
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-dim);
}

.btn-glass {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 99px;
    color: var(--text-main);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-glass:hover {
    background: rgba(0, 242, 234, 0.1);
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 0 15px rgba(0, 242, 234, 0.2);
}

/* Category Navigation Section */
.category-nav-section {
    background: rgba(10, 15, 28, 0.95);
    border: 1px solid rgba(0, 242, 234, 0.2);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    animation: fadeIn 0.3s ease-out;
    backdrop-filter: blur(10px);
}

.category-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.category-nav-header h3 {
    margin: 0;
    font-size: 1.1rem;
    color: var(--primary);
}

.category-buttons-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    max-height: 400px;
    overflow-y: auto;
    padding-right: 0.5rem;
}

/* Scrollbar for category grid */
.category-buttons-grid::-webkit-scrollbar {
    width: 6px;
}

.category-buttons-grid::-webkit-scrollbar-thumb {
    background: rgba(0, 242, 234, 0.2);
    border-radius: 3px;
}

.category-btn {
    padding: 0.75rem 1.25rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.category-btn:hover {
    background: rgba(0, 242, 234, 0.15);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.btn-icon {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 50%;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    color: #ef4444;
    /* Red color for close */
    background: rgba(239, 68, 68, 0.1);
}

.search-input:focus+.search-icon {
    color: var(--primary);
}

.search-input::placeholder {
    color: rgba(148, 163, 184, 0.6);
}

/* Main Content */
.main-content {
    padding: 3rem 0;
}

/* Section Common */
.section-favorites,
.section-all-tools {
    margin-bottom: 4rem;
    animation: fadeIn 0.8s ease-out;
}

.section-header {
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 1rem;
}

.section-title-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.section-title-wrapper h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
}

.icon-star-filled {
    color: #ffd700;
    fill: #ffd700;
    filter: drop-shadow(0 0 8px rgba(255, 215, 0, 0.4));
}

.badge-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.25rem 0.75rem;
    border-radius: 99px;
    background: var(--secondary);
    font-size: 0.75rem;
    font-weight: 700;
    color: white;
    box-shadow: 0 0 10px rgba(124, 58, 237, 0.4);
    white-space: nowrap;
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

/* Empty States */
.empty-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px dashed rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    padding: 3rem;
    text-align: center;
}

.card-title {
    color: var(--text-main);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* Tool Card Styles */
.tool-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 1.25rem;
    position: relative;
    transition: all var(--transition-smooth);
    overflow: hidden;
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.tool-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 242, 234, 0.3);
    box-shadow: 0 15px 30px -10px rgba(0, 0, 0, 0.5),
        0 0 20px rgba(0, 242, 234, 0.1) inset;
    background: rgba(20, 25, 40, 0.8);
}

.tool-card:hover::before {
    opacity: 1;
}

.tool-card::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(400px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(0, 242, 234, 0.15), transparent 60%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 2;
}

.tool-card:hover::after {
    opacity: 1;
}

.card-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.card-info {
    flex: 1;
}

.card-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.tool-card:hover .card-name {
    color: var(--primary);
    text-shadow: 0 0 10px rgba(0, 242, 234, 0.4);
}

.card-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Action Buttons */
.star-btn {
    background: rgba(255, 255, 255, 0.05);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.2s ease;
}

.star-btn:hover {
    background: rgba(255, 215, 0, 0.1);
    color: #ffd700;
    transform: scale(1.1);
}

.star-btn.active {
    color: #ffd700;
    background: rgba(255, 215, 0, 0.1);
}

.open-btn {
    margin-top: auto;
    width: 100%;
    padding: 0.75rem;
    background: linear-gradient(90deg, rgba(124, 58, 237, 0.1), rgba(124, 58, 237, 0.2));
    border: 1px solid rgba(124, 58, 237, 0.3);
    color: #d8b4fe;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.open-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.open-btn:hover {
    background: var(--secondary);
    border-color: var(--secondary);
    color: white;
    box-shadow: 0 0 15px rgba(124, 58, 237, 0.4);
}

.open-btn:hover::after {
    transform: translateX(100%);
}

.open-btn svg {
    transition: transform 0.3s ease;
}

.open-btn:hover svg {
    transform: translateX(3px) translateY(-3px);
}

/* Tools Container */
.tools-container {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    width: 100%;
}

/* Category Groups */
.category-group {
    margin-bottom: 3rem;
    animation: fadeIn 0.5s ease-in-out;
}

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

.category-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    white-space: nowrap;
    text-shadow: 0 0 15px rgba(0, 242, 234, 0.3);
}

.category-divider {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--primary-glow), transparent);
    box-shadow: 0 0 10px rgba(0, 242, 234, 0.2);
}

/* Footer */
.footer {
    margin-top: 6rem;
    padding: 3rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(10, 15, 28, 0.5);
    backdrop-filter: blur(10px);
}

.footer-content {
    text-align: center;
}

.footer-title {
    font-size: 1.25rem;
    color: var(--text-main);
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

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

.footer-separator {
    color: rgba(255, 255, 255, 0.1);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .header-top {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .search-wrapper {
        max-width: 100%;
        margin: 0;
        width: 100%;
    }

    .tools-grid {
        grid-template-columns: 1fr;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}

/* Scroll to Top Button */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 3rem;
    height: 3rem;
    background: var(--primary);
    color: var(--background);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 242, 234, 0.4);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    opacity: 0;
    pointer-events: none;
    z-index: 1000;
    transform: translateY(20px);
}

.scroll-to-top.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.scroll-to-top:hover {
    background: white;
    box-shadow: 0 0 20px rgba(0, 242, 234, 0.6);
    transform: translateY(-5px) scale(1.1);
}