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

:root {
    /* Dark Theme Colors */
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #242424;
    --bg-hover: #2a2a2a;

    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #737373;

    --border: #333333;
    --border-hover: #404040;

    /* Brand Colors */
    --primary: #8b5cf6;
    --primary-hover: #7c3aed;
    --primary-light: rgba(139, 92, 246, 0.1);

    --success: #22c55e;
    --success-light: rgba(34, 197, 94, 0.1);

    --warning: #f59e0b;
    --danger: #ef4444;

    /* Sizing */
    --sidebar-width: 240px;
    --top-nav-height: 60px;
    --radius: 8px;
    --radius-lg: 12px;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===================================
   LAYOUT STRUCTURE
   =================================== */
.content-wrapper {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: margin-left 0.3s ease;
}

body.sidebar-collapsed .content-wrapper {
    margin-left: 60px;
}

body.sidebar-collapsed .footer {
    left: 60px;
}

.footer {
    left: var(--sidebar-width);
}

/* ===================================
   MAIN CONTENT
   =================================== */
.main-content {
    flex: 1;
    padding: var(--spacing-xl);
    padding-bottom: 120px; /* Space for fixed footer */
}

/* ===================================
   TOP NAVIGATION (TABS)
   =================================== */
.top-nav {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
    position: sticky;
    top: 72px;
    background: var(--bg-primary);
    z-index: 900;
    backdrop-filter: blur(8px);
}

.tab-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

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

.tab-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* ===================================
   TOOLS GRID
   =================================== */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===================================
   TOOL CARD
   =================================== */
.tool-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
}

.tool-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: 0 12px 24px rgba(139, 92, 246, 0.2);
}

.card-image {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: var(--bg-tertiary);
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.tool-card:hover .card-image img {
    transform: scale(1.05);
}

.card-badges {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    right: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.status-badge {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--success);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
}

.type-badges {
    display: flex;
    gap: var(--spacing-sm);
}

.type-badge {
    padding: 4px 8px;
    border-radius: 4px;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    color: white;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.type-badge.ai {
    background: rgba(139, 92, 246, 0.9);
}

.type-badge.new {
    background: rgba(34, 197, 94, 0.9);
}

.type-badge.pro {
    background: rgba(245, 158, 11, 0.9);
}

.card-content {
    padding: var(--spacing-lg);
}

.card-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.card-description {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: var(--spacing-lg);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-action {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border);
    flex-wrap: nowrap;
}

.action-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 10px 16px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    flex-shrink: 0;
}

.action-btn:hover {
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.4);
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
    flex-shrink: 0;
}

.card-meta .iconify {
    font-size: 14px;
    color: var(--primary);
}

/* ===================================
   RESPONSIVE
   =================================== */
@media (max-width: 1400px) {
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    }
}

@media (max-width: 1024px) {
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

@media (max-width: 768px) {
    .content-wrapper {
        margin-left: 0;
    }

    .main-content {
        padding: var(--spacing-md);
        padding-bottom: 120px;
    }

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

/* ===================================
   SCROLLBAR
   =================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

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

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