:root {
    --primary-blue: #1a73e8;
    --secondary-blue: #4285f4;
    --light-blue: #e8f0fe;
    --dark-blue: #174ea6;
    --text-dark: #202124;
    --text-light: #5f6368;
    --gradient-primary: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navigation */
.navbar {
    padding: 1rem 0;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

.navbar-brand {
    font-size: 1.5rem;
    position: relative;
}

.navbar-brand::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.navbar-brand:hover::after {
    width: 100%;
}

.nav-link {
    color: var(--text-dark) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

/* Hero Section */
.hero-section {
    padding-top: 6rem;
    background: linear-gradient(135deg, var(--light-blue) 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="20" height="20" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><circle cx="2" cy="2" r="1" fill="%231a73e8" opacity="0.1"/></svg>') repeat;
    opacity: 0.5;
    animation: backgroundMove 20s linear infinite;
}

@keyframes backgroundMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(20px, 20px); }
}

.hero-section h1 {
    color: var(--text-dark);
    line-height: 1.2;
    position: relative;
}

/* Buttons */
.btn {
    position: relative;
    overflow: hidden;
    z-index: 1;
    transition: all 0.3s ease;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
    z-index: -1;
}

.btn:hover::before {
    left: 0;
}

.btn-primary {
    background: var(--gradient-primary);
    border: none;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    box-shadow: 0 4px 15px rgba(26, 115, 232, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(26, 115, 232, 0.3);
}

.btn-outline-primary {
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    transform: translateY(-2px);
}

/* Cards */
.card {
    transition: all 0.3s ease;
    border-radius: 1rem;
    border: none;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
}

.card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1) !important;
}

.card-body {
    padding: 2rem;
}

/* Icons */
.fa-3x, .fa-2x {
    color: var(--primary-blue);
    transition: all 0.3s ease;
}

.card:hover .fa-3x,
.card:hover .fa-2x {
    transform: scale(1.1);
    color: var(--secondary-blue);
}

/* Modern Footer */
footer {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

footer .container {
    position: relative;
    z-index: 1;
}

footer h5 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

footer a {
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

footer a:hover {
    transform: translateY(-3px);
}

footer .social-icons a {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    margin: 0 0.5rem;
    transition: all 0.3s ease;
}

footer .social-icons a:hover {
    background: var(--gradient-primary);
    transform: translateY(-3px);
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.hero-section {
    animation: fadeIn 1s ease-out;
}

.card {
    animation: fadeInUp 0.6s ease-out forwards;
    opacity: 0;
}

.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }
.card:nth-child(4) { animation-delay: 0.4s; }
.card:nth-child(5) { animation-delay: 0.5s; }
.card:nth-child(6) { animation-delay: 0.6s; }

/* Form Elements */
.form-control, .form-select {
    border-radius: 0.5rem;
    border: 2px solid #e0e0e0;
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 0.2rem rgba(26, 115, 232, 0.15);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .hero-section {
        padding-top: 4rem;
    }
    
    .hero-section h1 {
        font-size: 2.5rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }

    footer .social-icons {
        margin-top: 1rem;
    }
}

/* Scroll Animations */
.scroll-reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.scroll-reveal.active {
    opacity: 1;
    transform: translateY(0);
}