challenge-11/css/styles.css

/* Fallback styles in case CDN links fail */
:root {
    --primary-color: #8b5cf6;
    --secondary-color: #ec4899;
    --dark-bg: #4c1d95;
    --light-bg: #f8f9fa;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --white: #ffffff;
    --shadow: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --gradient-primary: linear-gradient(135deg, #8b5cf6, #ec4899);
    --gradient-secondary: linear-gradient(135deg, #6366f1, #8b5cf6);
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.5;
    background: linear-gradient(135deg, var(--light-bg), #e0e7ff);
    color: var(--text-dark);
    scroll-behavior: smooth;
}

/* Container fallback */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Navbar fallback */
.navbar {
    background: var(--gradient-primary);
    padding: 1rem 0;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.navbar:hover {
    box-shadow: var(--shadow-lg);
}

.navbar-brand {
    color: var(--white);
    text-decoration: none;
    font-size: 1.25rem;
    font-weight: bold;
    transition: transform 0.3s ease;
}

.navbar-brand:hover {
    transform: scale(1.1);
}

.navbar-nav {
    list-style: none;
    display: flex;
    gap: 1rem;
}

.nav-link {
    color: var(--white);
    text-decoration: none;
    opacity: 0.8;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    opacity: 1;
    color: #f472b6;
}

/* Button fallback */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.25rem;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, #7c3aed, #db2777);
}

/* Grid fallback */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: -15px;
}

.col-md-8 {
    flex: 0 0 66.666667%;
    max-width: 66.666667%;
    padding: 15px;
}

.mx-auto {
    margin-left: auto;
    margin-right: auto;
}

/* Utility classes fallback */
.py-8 {
    padding-top: 2rem;
    padding-bottom: 2rem;
}

.mt-4 {
    margin-top: 1rem;
}

.mb-4 {
    margin-bottom: 1rem;
}

.text-3xl {
    font-size: 1.875rem;
}

.font-bold {
    font-weight: 700;
}

.text-gray-600 {
    color: var(--text-light);
}

.bg-white {
    background-color: var(--white);
}

.rounded-lg {
    border-radius: 0.5rem;
}

.shadow-md {
    box-shadow: var(--shadow);
}

.p-6 {
    padding: 1.5rem;
}

/* Custom styles */
.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.btn-primary {
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

/* Form styles */
.form-control {
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(139, 92, 246, 0.25);
    transform: translateY(-1px);
}

/* Card hover effects */
.card {
    transition: all 0.3s ease;
    background: linear-gradient(135deg, #ffffff, #f9fafb);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, #ffffff, #f3f4f6);
}

/* Custom animations */
@keyframes fadeIn {
    from { 
        opacity: 0;
        transform: translateY(20px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.fade-in {
    animation: fadeIn 0.5s ease-in;
}

/* Gradient backgrounds */
.gradient-bg {
    background: var(--gradient-primary);
    background-size: 200% 200%;
    animation: gradient 15s ease infinite;
}

@keyframes gradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Section backgrounds */
.section-gradient-1 {
    background: linear-gradient(135deg, #ffffff, #e0e7ff);
}

.section-gradient-2 {
    background: linear-gradient(135deg, #f3e8ff, #fdf2f8);
}

.section-gradient-3 {
    background: linear-gradient(135deg, #e0e7ff, #ede9fe);
}

/* Text gradients */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* Border gradients */
.border-gradient {
    border: 2px solid transparent;
    background: linear-gradient(white, white) padding-box,
                var(--gradient-primary) border-box;
}

/* Responsive fallback */
@media (max-width: 768px) {
    .navbar-nav {
        flex-direction: column;
        display: none;
    }
    
    .navbar-nav.show {
        display: flex;
    }
    
    .col-md-8 {
        flex: 0 0 100%;
        max-width: 100%;
    }
}

/* Navbar Styles */
.glass-nav {
    background: rgba(139, 92, 246, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.glass-nav:hover {
    background: rgba(139, 92, 246, 0.15);
}

.navbar-brand img {
    filter: drop-shadow(0 0 8px rgba(139, 92, 246, 0.5));
}

.nav-link {
    position: relative;
    padding: 0.5rem 1rem;
    margin: 0 0.25rem;
}

.nav-link.active {
    color: #fff !important;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(to right, #8B5CF6, #EC4899);
    transform: scaleX(1);
    transition: transform 0.3s ease;
}

.nav-link:not(.active)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(to right, #8B5CF6, #EC4899);
    transform: scaleX(0);
    transition: transform 0.3s ease;
    transform-origin: right;
}

.nav-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* Slow spin animation for logo */
@keyframes spin-slow {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.animate-spin-slow {
    animation: spin-slow 20s linear infinite;
}

/* Navbar scroll effect */
.navbar {
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(139, 92, 246, 0.95);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

/* Mobile menu styles */
@media (max-width: 991.98px) {
    .navbar-collapse {
        background: rgba(139, 92, 246, 0.95);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border-radius: 0.5rem;
        padding: 1rem;
        margin-top: 0.5rem;
    }

    .nav-link {
        padding: 0.75rem 1rem;
        border-radius: 0.375rem;
    }

    .nav-link:hover {
        background: rgba(255, 255, 255, 0.1);
    }

    .nav-link::after {
        display: none;
    }
}