:root {
    --primary-blue: #1e3a8a;
    --secondary-blue: #3b82f6;
    --light-blue: #dbeafe;
    --primary-green: #059669;
    --secondary-green: #10b981;
    --light-green: #d1fae5;
    --dark-bg: #1f2937;
    --light-bg: #f9fafb;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #374151;
    overflow-x: hidden;
}

/* Navbar */
.navbar {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: white !important;
}

.navbar-nav .nav-link {
    color: rgba(255,255,255,0.9) !important;
    font-weight: 500;
    margin: 0 10px;
    transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: white !important;
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-green) 100%);
    color: white;
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: float 20s infinite linear;
}

@keyframes float {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    animation: fadeInUp 1s ease;
}

.hero .subtitle {
    font-size: 1.8rem;
    font-weight: 300;
    margin-bottom: 30px;
    animation: fadeInUp 1s ease 0.2s;
    animation-fill-mode: both;
    opacity: 0.9;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 30px;
    animation: fadeInUp 1s ease 0.4s;
    animation-fill-mode: both;
}

.hero-image {
    animation: fadeInUp 1s ease 0.6s;
    animation-fill-mode: both;
}

.hero-image img {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    transition: transform 0.3s ease;
}

.hero-image img:hover {
    transform: scale(1.05);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Skills Section */
.skills-section {
    padding: 80px 0;
    background-color: var(--light-bg);
}

/* Projects Section */
.projects-section {
    padding: 80px 0;
    background: white;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 50px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-green) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Skill Cards */
.skill-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary-blue), var(--primary-green));
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.skill-card:hover::before {
    transform: scaleY(1);
}

.skill-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 2rem;
}

.server-icon {
    background: linear-gradient(135deg, var(--light-blue), var(--secondary-blue));
    color: var(--primary-blue);
}

.network-icon {
    background: linear-gradient(135deg, var(--light-green), var(--secondary-green));
    color: var(--primary-green);
}

.security-icon {
    background: linear-gradient(135deg, var(--light-blue), var(--light-green));
    color: var(--primary-blue);
}

.firewall-icon {
    background: linear-gradient(135deg, var(--light-green), var(--secondary-green));
    color: var(--primary-green);
}

.storage-icon {
    background: linear-gradient(135deg, var(--light-blue), var(--secondary-blue));
    color: var(--primary-blue);
}

.monitoring-icon {
    background: linear-gradient(135deg, var(--light-green), var(--secondary-green));
    color: var(--primary-green);
}

.skill-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--dark-bg);
}

.skill-list {
    list-style: none;
    padding: 0;
}

.skill-list li {
    padding: 8px 0;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    align-items: center;
}

.skill-list li:last-child {
    border-bottom: none;
}

.skill-list li i {
    color: var(--secondary-blue);
    margin-right: 10px;
    width: 20px;
}

/* Project Cards - Horizontal Layout with Header on Top */
.project-card.horizontal {
    background: white;
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    border-left: 5px solid transparent;
}

.project-card.horizontal::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary-blue), var(--primary-green));
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.project-card.horizontal:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.project-card.horizontal:hover::before {
    transform: scaleY(1);
}

/* Project Header - Icon and Title on Top */
.project-header {
    border-bottom: 2px solid #f3f4f6;
    padding-bottom: 20px;
    margin-bottom: 25px;
}

.project-header .project-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 2rem;
}

.project-header h3 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--dark-bg);
    margin: 0;
    line-height: 1.3;
}

/* Project Content */
.project-content {
    /* Content styles */
}

.project-content .project-description {
    font-size: 1rem;
    color: #6b7280;
    margin-bottom: 15px;
    line-height: 1.7;
}

.project-content .project-benefits {
    list-style: none;
    padding: 0;
    margin-bottom: 15px;
}

.project-content .project-benefits li {
    padding: 6px 0;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    align-items: flex-start;
    font-size: 0.95rem;
}

.project-content .project-benefits li:last-child {
    border-bottom: none;
}

.project-content .project-benefits li::before {
    content: '•';
    color: var(--secondary-blue);
    font-weight: bold;
    margin-right: 10px;
}

.project-content .project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid #f3f4f6;
}

.project-content .tech-tag {
    background: linear-gradient(135deg, var(--light-blue), var(--light-green));
    color: var(--primary-blue);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* About Section */
.about-section {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 1.1rem;
    color: #6b7280;
    margin-bottom: 20px;
}

.profile-name {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

/* Contact Section */
.contact-section {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-green) 100%);
    color: white;
}

.contact-section .section-title {
    color: white !important;
    -webkit-text-fill-color: white !important;
    background: none !important;
}

/* Contact Links - Above Form */
.contact-links {
    margin-bottom: 40px;
}

.contact-links .contact-item {
    margin: 15px 20px;
    display: inline-block;
}

.contact-links .contact-item a {
    color: white;
    text-decoration: none;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    padding: 12px 25px;
    border-radius: 50px;
    background-color: rgba(255,255,255,0.1);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255,255,255,0.2);
}

.contact-links .contact-item a:hover {
    transform: translateY(-3px);
    background-color: rgba(255,255,255,0.2);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.contact-links .contact-item i {
    font-size: 1.4rem;
    margin-right: 12px;
}

/* Contact Form Container */
.contact-form-container {
    /* Container styles */
}

/* Contact Form */
.contact-form {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 40px;
    border: 1px solid rgba(255,255,255,0.2);
}

.contact-form .form-label {
    color: white;
    font-weight: 500;
    margin-bottom: 8px;
}

.contact-form .form-control {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.3);
    color: white;
    border-radius: 8px;
    padding: 12px 15px;
    transition: all 0.3s ease;
}

.contact-form .form-control:focus {
    background: rgba(255,255,255,0.15);
    border-color: rgba(255,255,255,0.5);
    color: white;
    box-shadow: 0 0 0 0.2rem rgba(255,255,255,0.25);
}

.contact-form .form-control::placeholder {
    color: rgba(255,255,255,0.6);
}

.contact-form .btn {
    background: white;
    color: var(--primary-blue);
    border: none;
    padding: 12px 30px;
    font-weight: 600;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.contact-form .btn:hover {
    background: rgba(255,255,255,0.9);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

#formMessage {
    text-align: center;
    padding: 15px;
    border-radius: 8px;
    font-weight: 500;
    margin-top: 15px;
    display: none;
}

#formMessage.success {
    background: rgba(16, 185, 129, 0.2);
    border: 1px solid rgba(16, 185, 129, 0.5);
    color: #10b981;
    display: block;
}

#formMessage.error {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid rgba(239, 68, 68, 0.5);
    color: #ef4444;
    display: block;
}

/* Footer */
footer {
    background-color: var(--dark-bg);
    color: white;
    text-align: center;
    padding: 30px 0;
}

.footer-name {
    font-weight: 600;
    color: var(--secondary-blue);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero .subtitle {
        font-size: 1.4rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .hero-image {
        margin-top: 40px;
        text-align: center;
    }
    
    .hero-image img {
        max-width: 350px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    /* Contact links responsive */
    .contact-links .contact-item {
        display: block;
        margin: 10px auto;
        max-width: 300px;
        text-align: center;
    }
    
    .contact-form {
        padding: 30px;
    }
    
    /* Horizontal project cards responsive */
    .project-card.horizontal {
        padding: 20px;
    }
    
    .project-header {
        margin-bottom: 20px;
        padding-bottom: 15px;
    }
    
    .project-header .project-icon {
        width: 70px;
        height: 70px;
        font-size: 1.8rem;
        margin-bottom: 10px;
    }
    
    .project-header h3 {
        font-size: 1.3rem;
    }
    
    .project-content .row > div {
        margin-bottom: 20px;
    }
    
    .project-content .project-tech {
        margin-top: 15px;
        padding-top: 10px;
    }
}

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}

/* Loading animation */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}