:root {
    --primary-sky-blue: #4fc3f7;
    --dark-gray: #2c3e50;
    --light-gray: #34495e;
    --premium-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}
.text-gray { color: #6c757d; }
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background-color: #f8f9fa;
}
.navbar {
    background: #ffffff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}
.navbar-brand {
    font-weight: bold;
    color: #000000 !important;
    font-size: 2rem;
}
.nav-link {
    color: #333333 !important;
    font-weight: 500;
    transition: color 0.3s ease;
}
.nav-link:hover {
    color: #6c757d !important;
}
/* Hero Section */
.hero {
    padding: 160px 0 80px;
    text-align: center;
    background: linear-gradient(135deg, #e3f2fd 0%, #e8f5e8 100%);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, #00d4ff, #00ff7f);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    color: #475569;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-section {
    background-color: #ffffff;
    padding: 100px 0;
}
.hero-text {
    color: #6c757d;
    font-size: 1.5rem;
    min-height: 2.5rem;
    position: relative;
}
.typing-container {
    display: inline-block;
    position: relative;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}
.typing-container.active {
    opacity: 1;
}
.cursor {
    display: inline-block;
    width: 8px;
    height: 1.5rem;
    background-color: #000000;
    vertical-align: middle;
    animation: blink 0.7s step-end infinite;
}
@keyframes blink {
    50% { opacity: 0; }
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border: none;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(45deg, #00d4ff, #0099cc);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: #00ff7f;
    border: 2px solid #00ff7f;
}

.btn-secondary:hover {
    background: #00ff7f;
    color: white;
}
.btn-outline-primary {
    border-color: #000000;
    color: #000000;
    padding: 10px 20px;
    font-weight: 500;
    margin: 10px 0;
}
.btn-outline-primary:hover {
    background-color: #000000;
    color: #ffffff;
}
.contact-form {
    max-width: 400px;
    background-color: #f8f9fa;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}
.form-control {
    border-color: #ced4da;
    border-radius: 5px;
}
.form-control:focus {
    border-color: #4fc3f7 !important;
    box-shadow: 0 0 0 0.2rem rgba(0, 0, 0, 0.1);
}
.about-section {
    background: linear-gradient(135deg, var(--dark-gray) 0%, #1a252f 100%);
    color: #ecf0f1; /* Light text for contrast */
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}
.about-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 50%, rgba(79, 195, 247, 0.1) 0%, transparent 50%);
    pointer-events: none;
}
.section-title {
    color: var(--primary-sky-blue);
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    margin-bottom: 2rem;
}
.about-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(79, 195, 247, 0.2);
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    box-shadow: var(--premium-shadow);
}
.about-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-sky-blue);
    box-shadow: 0 15px 40px rgba(79, 195, 247, 0.2);
}
.about-card h3 {
    color: var(--primary-sky-blue);
    font-weight: 600;
    margin-bottom: 1rem;
}
.about-card ul {
    list-style: none;
    padding-left: 0;
}
.about-card li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 1.5rem;
}
.about-card li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-sky-blue);
    font-weight: bold;
}
.btn-sky-blue {
    background: linear-gradient(135deg, var(--primary-sky-blue) 0%, #29b6f6 100%);
    border: none;
    color: #fff;
    padding: 0.75rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(79, 195, 247, 0.4);
}
.btn-sky-blue:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 195, 247, 0.6);
    color: #fff;
}
.welcome-text {
    font-size: 1.1rem;
    margin-bottom: 3rem;
}
.card:hover { transform: translateY(-5px); transition: transform 0.3s ease; }

@media (max-width: 768px) {
    .hero-text {
        font-size: 1.2rem;
    }
    .btn-primary, .btn-outline-primary {
        display: block;
        width: 100%;
    }
    .contact-form {
        margin-top: 2rem;
    }
}