:root {
    --font-primary: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    --color-primary: #1E3A8A; /* Deep Navy Blue */
    --color-primary-hover: #172554;
    --color-primary-light: rgba(30, 58, 138, 0.05);
    --color-primary-border: #DBEAFE;
    
    --color-accent: #E53E3E; /* Accent Red */
    --color-accent-hover: #C53030;
    --color-accent-light: rgba(229, 62, 62, 0.08);
    
    --color-secondary: #0F172A;
    --color-secondary-hover: #1E293B;
    
    --color-bg: #FFFFFF;
    --color-bg-subtle: #F8FAFC;
    --color-card-bg: #FFFFFF;
    
    --color-text-main: #1E293B;
    --color-text-muted: #64748B;
    --color-success: #10B981;
    
    --color-border: #E2E8F0;
    
    --border-radius-card: 16px;
    --border-radius-btn: 12px;
    --border-radius-pill: 9999px;
    
    --shadow-subtle: 0 4px 20px -2px rgba(15, 23, 42, 0.04), 0 2px 6px -1px rgba(15, 23, 42, 0.02);
    --shadow-elevated: 0 12px 32px -4px rgba(30, 58, 138, 0.08), 0 4px 12px -2px rgba(15, 23, 42, 0.04);
}

[data-bs-theme="dark"] {
    --color-bg: #090D16;
    --color-bg-subtle: #0F1524;
    --color-card-bg: #151C2C;
    
    --color-text-main: #F8FAFC;
    --color-text-muted: #94A3B8;
    
    --color-border: rgba(255, 255, 255, 0.08);
    
    --shadow-subtle: 0 4px 24px -2px rgba(0, 0, 0, 0.4);
    --shadow-elevated: 0 12px 36px -4px rgba(0, 0, 0, 0.6);
}

/* Brand Colors */
.brand-blue {
    color: var(--color-primary) !important;
}
.brand-accent {
    color: var(--color-accent) !important;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg);
    color: var(--color-text-main);
    transition: background-color 0.25s ease, color 0.25s ease;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--color-text-main);
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Navbar */
.navbar-custom {
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    transition: all 0.2s ease;
}

.navbar-brand-logo {
    font-weight: 800;
    font-size: 1.4rem;
    color: var(--color-secondary);
    letter-spacing: -0.03em;
}

[data-bs-theme="dark"] .navbar-brand-logo {
    color: #FFFFFF;
}

.brand-blue {
    color: var(--color-primary);
}

.nav-link {
    color: var(--color-text-main);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 1rem !important;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--color-primary);
}

/* Buttons */
.btn-primary-custom {
    background-color: var(--color-primary);
    color: #FFFFFF;
    border: 1px solid var(--color-primary);
    border-radius: var(--border-radius-btn);
    padding: 0.75rem 1.75rem;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.btn-primary-custom:hover, .btn-primary-custom:focus {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: #FFFFFF;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.3);
}

.btn-secondary-custom {
    background-color: transparent;
    color: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-btn);
    padding: 0.75rem 1.75rem;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.2s ease;
}

[data-bs-theme="dark"] .btn-secondary-custom {
    color: #F9FAFB;
}

.btn-secondary-custom:hover {
    background-color: var(--color-bg-subtle);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Hero Section & Background Blobs */
.hero-section-custom {
    position: relative;
    overflow: hidden;
    padding: 5rem 0 3.5rem 0;
    background-color: var(--color-bg);
}

.blob-left {
    position: absolute;
    top: -50px;
    left: -100px;
    width: 250px;
    height: 250px;
    background-color: rgba(229, 62, 62, 0.06); /* light red accent */
    border-radius: 50%;
    filter: blur(40px);
    z-index: 1;
    pointer-events: none;
}

.blob-right {
    position: absolute;
    top: 20px;
    right: -100px;
    width: 300px;
    height: 300px;
    background-color: rgba(254, 240, 138, 0.25); /* light yellow */
    border-radius: 40px;
    transform: rotate(15deg);
    filter: blur(35px);
    z-index: 1;
    pointer-events: none;
}

.hero-headline {
    font-size: 3.25rem;
    line-height: 1.15;
    font-weight: 800;
    color: var(--color-primary); /* Navy Blue */
    margin-bottom: 1.25rem;
    letter-spacing: -0.03em;
}

[data-bs-theme="dark"] .hero-headline {
    color: #FFFFFF;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    margin-bottom: 2rem;
    max-width: 700px;
    line-height: 1.6;
}

/* Drag & Drop Box */
.upload-box {
    border: 2px dashed var(--color-primary);
    background-color: var(--color-primary-light);
    border-radius: var(--border-radius-card);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.25s ease;
}

[data-bs-theme="dark"] .upload-box {
    background-color: rgba(30, 58, 138, 0.08);
}

.upload-box:hover, .upload-box.drag-over {
    background-color: rgba(30, 58, 138, 0.12);
    border-color: var(--color-primary-hover);
    transform: scale(1.005);
}

.upload-icon {
    font-size: 2.75rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

/* Tool Cards Grid */
.tool-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-card);
    box-shadow: var(--shadow-subtle);
    padding: 1.5rem;
    height: 100%;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-elevated);
    border-color: var(--color-primary);
    text-decoration: none;
}

.tool-icon-box {
    width: 3rem;
    height: 3rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    margin-bottom: 1rem;
    transition: all 0.2s ease;
}

/* Dynamic Distinct Icon Colors matching screenshot */
.tool-icon-box.blue {
    background-color: rgba(30, 58, 138, 0.08);
    color: var(--color-primary);
}
.tool-icon-box.cyan {
    background-color: rgba(6, 182, 212, 0.1);
    color: #0891B2;
}
.tool-icon-box.orange {
    background-color: rgba(249, 115, 22, 0.1);
    color: #EA580C;
}
.tool-icon-box.red {
    background-color: rgba(239, 68, 68, 0.1);
    color: #DC2626;
}
.tool-icon-box.green {
    background-color: rgba(34, 197, 94, 0.1);
    color: #16A34A;
}
.tool-icon-box.purple {
    background-color: rgba(168, 85, 247, 0.1);
    color: #9333EA;
}

.tool-card:hover .tool-icon-box {
    filter: brightness(0.95);
    transform: scale(1.05);
}

.tool-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text-main);
    margin-bottom: 0.4rem;
}

.tool-card-desc {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 0;
    line-height: 1.5;
    flex-grow: 1;
}

/* Custom Badges matching screenshot */
.badge-tag {
    font-size: 0.65rem !important;
    font-weight: 750 !important;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border-radius: 4px !important;
    padding: 0.3rem 0.55rem !important;
    color: #FFFFFF !important;
    border: none !important;
}
.badge-popular {
    background-color: #F97316 !important; /* Orange badge */
}
.badge-ai {
    background-color: #22C55E !important; /* Green badge */
}
.badge-nepal {
    background-color: #EF4444 !important; /* Red badge */
}

/* Search Bar & Inner Red Button */
.search-wrapper {
    position: relative;
    max-width: 600px;
    margin: 0 auto 2rem auto;
}

.search-input {
    width: 100%;
    padding: 0.9rem 7.5rem 0.9rem 3rem;
    font-size: 1rem;
    border-radius: var(--border-radius-pill);
    border: 1px solid var(--color-border);
    background-color: var(--color-bg);
    color: var(--color-text-main);
    box-shadow: var(--shadow-subtle);
    transition: all 0.2s ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(30, 58, 138, 0.15);
}

.search-icon-inside {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    font-size: 1.1rem;
    z-index: 3;
}

.btn-search-red {
    position: absolute;
    right: 6px;
    top: 6px;
    bottom: 6px;
    background-color: var(--color-accent);
    color: #FFFFFF;
    border: none;
    border-radius: var(--border-radius-pill);
    padding: 0 1.5rem;
    font-weight: 600;
    transition: all 0.2s ease;
    z-index: 4;
}

.btn-search-red:hover {
    background-color: var(--color-accent-hover);
    box-shadow: 0 2px 8px rgba(229, 62, 62, 0.2);
}

/* Filter Pills matching screenshot active styling */
.category-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    margin-bottom: 2.5rem;
}

.category-pill-btn {
    background-color: var(--color-bg-subtle);
    border: 1px solid var(--color-border);
    color: var(--color-text-main);
    border-radius: var(--border-radius-pill);
    padding: 0.5rem 1.35rem;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.category-pill-btn:hover, .category-pill-btn.active {
    background-color: var(--color-accent-light);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* Features Section */
.feature-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-card);
    padding: 1.75rem 1.5rem;
    text-align: center;
    height: 100%;
    box-shadow: var(--shadow-subtle);
}

.feature-icon-circle {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 1.25rem auto;
}

[data-bs-theme="dark"] .feature-icon-circle {
    background-color: rgba(30, 58, 138, 0.15);
}

/* Themed Specialized Tool Buttons */
.btn-crimson-custom, .btn-crimson-saas {
    background-color: var(--color-accent) !important;
    color: #FFFFFF !important;
    border: 1px solid var(--color-accent) !important;
    border-radius: var(--border-radius-btn) !important;
    padding: 0.75rem 1.75rem !important;
    font-weight: 600 !important;
    font-size: 1rem !important;
    transition: all 0.2s ease !important;
    box-shadow: 0 4px 12px rgba(229, 62, 62, 0.2) !important;
}

.btn-crimson-custom:hover, .btn-crimson-custom:focus,
.btn-crimson-saas:hover, .btn-crimson-saas:focus {
    background-color: var(--color-accent-hover) !important;
    border-color: var(--color-accent-hover) !important;
    color: #FFFFFF !important;
    transform: translateY(-1px) !important;
    box-shadow: 0 6px 16px rgba(229, 62, 62, 0.3) !important;
}

/* Footer */
footer {
    background-color: var(--color-secondary);
    color: #94A3B8;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

footer a {
    color: #94A3B8;
    text-decoration: none;
    transition: color 0.2s ease;
}

footer a:hover {
    color: #FFFFFF;
}