/* Modern Portfolio CSS - Collins Muriithi */

/* ---------- Global Styles ---------- */
:root {
    /* Color Palette */
    --primary-color: #05b2dc;
    --secondary-color: #9649cb;
    --dark-bg: #0c1e2e;
    --darker-bg: #091423;
    --light-bg: #f7f9fc;
    --text-light: #f0f4f8;
    --text-dark: #1a2a3a;
    --text-muted: #8195a6;
    --border-color: rgba(255, 255, 255, 0.1);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    
    /* Transitions */
    --transition-fast: 0.3s ease;
    --transition-normal: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    background-color: var(--darker-bg);
    color: var(--text-light);
    overflow-x: hidden;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.75rem;
}

p {
    margin-bottom: var(--spacing-sm);
}

.accent {
    color: var(--primary-color);
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
    cursor: pointer;
    transition: var(--transition-fast);
    margin-right: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border: none;
    box-shadow: 0 4px 15px rgba(5, 178, 220, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(5, 178, 220, 0.4);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-light);
    border: none;
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
}

.btn-outlined {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outlined:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

/* ---------- Navbar ---------- */
.navbar {
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    padding: 1rem 0;
    background-color: rgba(9, 20, 35, 0.8);
    backdrop-filter: blur(10px);
    transition: var(--transition-normal);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-text {
    font-family: 'Montserrat', sans-serif;
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

.nav-menu {
    display: flex;
}

.nav-menu li {
    margin-left: var(--spacing-md);
}

.nav-link {
    position: relative;
    padding: 0.5rem 0;
    font-weight: 500;
    color: var(--text-light);
    transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    transition: var(--transition-fast);
}

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

/* Navbar scroll effect */
.navbar.scrolled {
    padding: 0.75rem 0;
    background-color: rgba(9, 20, 35, 0.95);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

/* ---------- Hero Section ---------- */
.hero {
    padding: 180px 0 100px;
    background: linear-gradient(180deg, var(--darker-bg) 0%, var(--dark-bg) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 200%;
    background: radial-gradient(ellipse at center, rgba(5, 178, 220, 0.15) 0%, rgba(9, 20, 35, 0) 70%);
    z-index: 0;
}

.hero-content {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: var(--spacing-lg);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    margin-bottom: var(--spacing-sm);
}

.hero-text h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-muted);
}

.hero-text p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
}

.cta-buttons {
    margin-top: var(--spacing-md);
}

.hero-image {
    position: relative;
}

.profile-image {
    width: 100%;
    max-width: 350px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border: 5px solid rgba(255, 255, 255, 0.1);
    margin: 0 auto;
}

/* ---------- Section Styling ---------- */
section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto var(--spacing-md);
}

.section-subheader {
    text-align: center;
    margin: var(--spacing-lg) 0 var(--spacing-md);
}

.section-subheader h3 {
    font-size: 2rem;
}

/* ---------- Portfolio Section ---------- */
.portfolio {
    background-color: var(--dark-bg);
}

.portfolio-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.filter-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 0.5rem 1.5rem;
    margin: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 50px;
    transition: var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--primary-color);
    color: white;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.portfolio-item {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
    transition: var(--transition-normal);
    position: relative;
}

.portfolio-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
}

.portfolio-image {
    position: relative;
}

.portfolio-image img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.4) 40%, rgba(0, 0, 0, 0.1) 100%);
    display: flex;
    align-items: flex-end;
    padding: var(--spacing-md);
    opacity: 0;
    transition: var(--transition-normal);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-info {
    text-align: center;
    width: 100%;
}

.portfolio-info h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.portfolio-info p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

/* ---------- Skills Section ---------- */
.skills {
    background-color: var(--darker-bg);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.skill-card {
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: var(--spacing-md);
    transition: var(--transition-normal);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    background-color: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.skill-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.skill-card h3 {
    font-size: 1.4rem;
    margin-bottom: var(--spacing-sm);
}

.skill-bar {
    height: 6px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 3px;
    transition: width 1s ease-in-out;
}

.skill-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ---------- Contact Section ---------- */
.contact {
    background-color: var(--dark-bg);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-card {
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: var(--transition-fast);
    border: 1px solid var(--border-color);
}

.contact-card:hover {
    background-color: rgba(255, 255, 255, 0.08);
    transform: translateY(-5px);
}

.contact-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.contact-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.contact-card p {
    color: var(--text-muted);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-light);
    font-size: 1.2rem;
    transition: var(--transition-fast);
    border: 1px solid var(--border-color);
}

.social-link:hover {
    background-color: var(--primary-color);
    transform: translateY(-5px);
}

.contact-form {
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-light);
    font-family: 'Poppins', sans-serif;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: rgba(255, 255, 255, 0.08);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

/* ---------- Footer ---------- */
.footer {
    background-color: var(--darker-bg);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-logo {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-sm);
}

.footer-logo p {
    font-size: 1rem;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.footer-nav h4,
.footer-social h4 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-light);
}

.footer-nav ul li,
.footer-social ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-nav ul li a,
.footer-social ul li a {
    color: var(--text-muted);
    transition: var(--transition-fast);
    display: inline-block;
}

.footer-nav ul li a:hover,
.footer-social ul li a:hover {
    color: var(--primary-color);
    transform: translateX(5px);
}

.footer-social ul li a i {
    margin-right: 0.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ---------- Animations ---------- */
.animate-fade-in {
    animation: fadeIn 1s ease-in-out;
}

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

/* ---------- Media Queries ---------- */
@media (max-width: 992px) {
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text p {
        margin: 0 auto var(--spacing-md);
    }
    
    .hero-image {
        margin-top: var(--spacing-lg);
        order: -1;
    }
    
    .profile-image {
        margin: 0 auto;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        flex-direction: column;
        background-color: var(--dark-bg);
        padding: var(--spacing-md) 0;
        transform: translateY(-150%);
        transition: transform var(--transition-normal);
        opacity: 0;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .nav-menu li {
        margin: 0;
        text-align: center;
    }
    
    .nav-link {
        display: block;
        padding: var(--spacing-sm) 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .portfolio-filter {
        flex-direction: column;
        align-items: center;
    }
    
    .filter-btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .skills-grid,
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
}
.social-links {
    margin-top: 20px;
    text-align: center;
}

.social-links a {
    display: inline-block;
    margin: 0 10px;
    text-decoration: none;
}

.social-icon {
    width: 32px;
    height: 32px;
}