/* LearnBit.pro Custom Styles – Updated November 29, 2025 */
/* Fully Dark Footer + Modern Design */

:root {
    --primary-color: #1e3a8a;
    --secondary-color: #3b82f6;
    --accent-color: #60a5fa;      /* Bright blue accent (modern) */
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --dark-color: #0f172a;       /* Deep dark base */
    --dark-lighter: #1e293b;
    --dark-lightest: #334155;
    --light-color: #f8fafc;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #cbd5e1;
    --text-lighter: #e2e8f0;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
}

/* Global */
* { box-sizing: border-box; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: #d8d8d8;
    padding-top: 76px;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    line-height: 1.2;
}

/* Navbar */
.navbar {
    backdrop-filter: blur(10px);
    background-color: rgba(30, 58, 138, 0.95) !important;
    transition: all 0.3s ease;
}
.navbar-brand {
    font-family: 'Poppins', sans-serif;
    font-size: 1.5rem !important;
    font-weight: 700;
}
.navbar-nav .nav-link {
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}
.navbar-nav .nav-link:hover {
    color: var(--accent-color) !important;
}
.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    width: 0; height: 2px;
    bottom: 0; left: 50%;
    background-color: var(--accent-color);
    transition: all 0.3s ease;
}
.navbar-nav .nav-link:hover::after {
    width: 100%;
    left: 0;
}

/* In your :root or main theme file */
:root {
    --primary-color:   #16a34a;   /* green-600 */
    --secondary-color: #4ade80;   /* green-400 lighter */
    /* or same color for flat look */
    /* --secondary-color: #16a34a; */
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%) !important;
}

/* Cards */
.tool-card, .blog-card {
    border: none;
    border-radius: 15px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: white;
    overflow: hidden;
}
.tool-card:hover, .blog-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}
.shadow-hover:hover { box-shadow: var(--shadow-xl); }

/* Buttons */
.btn {
    border-radius: 25px;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    position: relative;
    overflow: hidden;
}
.btn::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}
.btn:hover::before { left: 100%; }

.btn-primary   { background: linear-gradient(135deg, var(--primary-color), var(--secondary-color)); }
.btn-success   { background: linear-gradient(135deg, var(--success-color), #059669); }
.btn-warning   { background: linear-gradient(135deg, var(--accent-color), #3b82f6); }
.btn-outline-primary:hover { background: var(--primary-color); color: white; }

/* Animations */
@keyframes fadeIn { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
.fade-in { animation: fadeIn 0.8s ease-out forwards; opacity: 0; }
.fade-in.delay-1 { animation-delay: 0.2s; }
.fade-in.delay-2 { animation-delay: 0.4s; }

/* Form Controls */
.form-control {
    border-radius: 10px;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}
.form-control:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.25);
}

/* Footer – Solid Dark Theme (Guaranteed) */
footer {
    background: linear-gradient(135deg, var(--dark-color) 0%, var(--dark-lighter) 50%, var(--dark-lightest) 100%) !important;
    background-color: #0f172a !important;
    color: var(--text-lighter) !important;
    border-top: 1px solid rgba(255,255,255,0.1);
}

footer h5,
footer h6,
footer .fw-bold {
    color: #f8fafc !important;
}

footer p,
footer ul li,
footer .small {
    color: #cbd5e1 !important;
}

footer a {
    color: #94a3b8 !important;
    text-decoration: none !important;
    transition: all 0.3s ease;
}

footer a:hover {
    color: var(--accent-color) !important;
    text-decoration: underline !important;
}

footer .text-warning {
    color: var(--accent-color) !important;
}

footer hr {
    border-color: rgba(255,255,255,0.1) !important;
    opacity: 0.3;
}

footer .social-links a {
    background: rgba(255,255,255,0.1);
    color: #e2e8f0 !important;
}

footer .social-links a:hover {
    background: var(--accent-color) !important;
    color: white !important;
    transform: translateY(-3px);
}

#backToTop {
    background: var(--accent-color) !important;
    color: white !important;
    border: 2px solid var(--accent-color) !important;
}

#backToTop:hover {
    background: transparent !important;
    color: var(--accent-color) !important;
}

/* Back to Top Visibility */
#backToTop {
    display: none;
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
    border-radius: 50%;
    width: 50px;
    height: 50px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-section { min-height: 60vh; text-align: center; }
    .display-4 { font-size: 2.5rem; }
    .btn-lg { font-size: 1rem; padding: 0.6rem 1.2rem; }
}

/* Utility */
.hover-underline:hover { text-decoration: underline !important; }