/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

/* Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* Background Animation */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.floating-shapes {
    position: relative;
    width: 100%;
    height: 100%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 120px;
    height: 120px;
    top: 60%;
    right: 10%;
    animation-delay: 2s;
}

.shape-3 {
    width: 60px;
    height: 60px;
    top: 80%;
    left: 20%;
    animation-delay: 4s;
}

.shape-4 {
    width: 100px;
    height: 100px;
    top: 30%;
    right: 30%;
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.7;
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 1;
    }
}

/* Navbar Styles */
.navbar-brand {
    font-size: 1.5rem;
    color: white !important;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Hero Section */
.hero-title {
    font-size: 3rem;
    font-weight: 700;
    color: white;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 300;
}

/* Main Card */
.main-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 25px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.main-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15);
}

/* Input Styles */
.input-container {
    position: relative;
}

.input-group-lg .form-control {
    border-radius: 15px;
    border: 2px solid #e9ecef;
    font-size: 1.1rem;
    padding: 1rem 1.5rem;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.9);
}

.input-group-lg .form-control:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
    background: white;
}

.input-group-text {
    border-radius: 15px 0 0 15px;
    border: 2px solid #e9ecef;
    border-right: none;
    background: rgba(255, 255, 255, 0.9);
    transition: all 0.3s ease;
}

.input-group:focus-within .input-group-text {
    border-color: #667eea;
    background: white;
}

/* Button Styles */
.btn-download {
    border-radius: 0 15px 15px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    padding: 1rem 2rem;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-download:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.btn-download:active {
    transform: translateY(0);
}

.btn-download .btn-text {
    transition: opacity 0.3s ease;
}

.btn-download.loading .btn-text {
    opacity: 0;
}

.btn-download.loading .spinner-border {
    display: inline-block !important;
}

/* Progress Bar */
.progress-container {
    animation: slideDown 0.5s ease;
}

.progress {
    height: 8px;
    border-radius: 10px;
    background: rgba(102, 126, 234, 0.1);
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 10px;
    transition: width 0.3s ease;
}

/* Alert Styles */
.alert {
    border-radius: 15px;
    border: none;
    font-weight: 500;
    animation: slideDown 0.5s ease;
}

.alert-success {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    color: #155724;
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
}

.alert-info {
    background: linear-gradient(135deg, #d1ecf1 0%, #bee5eb 100%);
    color: #0c5460;
}

/* Feature Cards */
.feature-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    background: white;
}

.feature-icon {
    font-size: 3rem;
    transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

/* Download Links */
.list-group-item {
    border-radius: 15px;
    border: 2px solid #e9ecef;
    margin-bottom: 10px;
    background: rgba(255, 255, 255, 0.9);
    transition: all 0.3s ease;
    animation: slideUp 0.5s ease;
}

.list-group-item:hover {
    border-color: #667eea;
    background: white;
    transform: translateX(10px);
}

.list-group-item a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
}

.list-group-item a:hover {
    color: #5a6fd8;
}

/* Footer */
footer {
    color: rgba(255, 255, 255, 0.8);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Animations */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .main-card .card-body {
        padding: 2rem !important;
    }
    
    .input-group-lg .form-control,
    .btn-download {
        font-size: 1rem;
        padding: 0.8rem 1.2rem;
    }
    
    .feature-icon {
        font-size: 2.5rem;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 1.5rem;
    }
    
    .main-card .card-body {
        padding: 1.5rem !important;
    }
    
    .input-group-lg {
        flex-direction: column;
    }
    
    .input-group-lg .form-control {
        border-radius: 15px;
        margin-bottom: 1rem;
    }
    
    .input-group-text {
        display: none;
    }
    
    .btn-download {
        border-radius: 15px;
        width: 100%;
    }
}

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

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}