/* ==================== RESET & BASE STYLES ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Root variables for consistent theming */
:root {
    /* Blue theme */
    --primary-color: #3b82f6; /* blue-500 */
    --primary-dark: #2563eb;  /* blue-600 */
    --secondary-color: #0ea5e9; /* sky-500 */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-dark: #111827;
    --border-color: #e5e7eb;
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --card-hover-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --transition: all 0.3s ease;
}

/* Dark mode variables */
body.dark-mode {
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-light: #9ca3af;
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --border-color: #374151;
}

/* Slightly lighten cards in dark mode for better contrast */
body.dark-mode .skill-card,
body.dark-mode .project-card {
    background: #1c2430; /* adjust this to make cards brighter/darker */
    border: 1px solid rgba(255, 255, 255, 0.06);
}

/* Base body styles */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
    transition: var(--transition);
}

/* ==================== NAVIGATION BAR ==================== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    /* box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1); */
    transition: var(--transition);
}

body.dark-mode .navbar {
    background: #161f2d
     /* rgba(17, 24, 39, 0.95); */
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    /* padding: .5rem .5rem; */
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    /* font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text; */
    -webkit-text-fill-color: transparent;
    /* text-decoration: none; */
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s;
}

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

/* Dark mode toggle button */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.theme-toggle:hover {
    color: var(--primary-color);
    transform: rotate(180deg);
}

/* Mobile menu toggle - now hidden since we removed the menu */
.mobile-menu-toggle {
    display: none;
}

/* ==================== HERO SECTION ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 2rem 4rem;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    position: relative;
    overflow: hidden;
}

/* Avatar below the hero name (adjust size/border/brightness as needed) */
.hero-avatar-wrapper { /* Change image size via width; it scales responsively */
    margin: 0 auto 1.25rem; /* space below the avatar */
    width: 250px; /* adjust avatar size */
    height: 250px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
    border: 2px solid rgba(129, 198, 255, 0.8); /* tweak border style */
}

.hero-avatar { /* Tweak brightness/contrast if the photo looks dark */
    width: 100%;
    height: 115%;
    object-fit: cover;
    filter: brightness(1.15) contrast(1.05); /* increase if image still dark */
    display: block;
}

/* Animated background particles */
.particles {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
}

.particle {
    position: absolute;
    background: var(--primary-color);
    border-radius: 50%;
    opacity: 0.1;
    animation: float 20s infinite linear;
}

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

.hero-content {
    max-width: 800px;
    text-align: center;
    z-index: 1;
    animation: fadeInUp 1s ease;
}

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

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-cta { /* container for CV + buttons */
    display: grid;
    justify-content: center;
    gap: 1rem;
}

.social-buttons {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.btn-circle {
    width: 40px;
    height: 40px;
    border-radius: 9999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    font-weight: 700;
    text-decoration: none;
    transition: var(--transition);
}

.btn-circle:hover {
    background: var(--primary-color);
    color: #fff;
    transform: translateY(-2px);
}

.btn {
    padding: 0.75rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
}

/* ==================== ABOUT SECTION ==================== */
.section {
    padding: 3.5rem 2rem; /* adjust overall vertical space between sections */
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 2.5rem; /* reduce space below section headers */
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-title--sm {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

/* Center the subsection titles and descriptions inside project categories */
.project-category .section-title--sm,
.project-category .section-description--sm {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.section-description--sm {
    font-size: 1rem;
}

.mt-3 { margin-top: 3rem; }

.modal-close {
    background: transparent;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.modal-image {
    width: 100%;
    height: auto;
    border-radius: 12px;
    background: var(--bg-secondary);
}

.modal-description { color: var(--text-secondary); }

.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.about-card {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-hover-shadow);
}

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

/* ==================== SKILLS SECTION ==================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.skill-card {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.3s;
}

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

.skill-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--card-hover-shadow);
}

.skill-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    /* -webkit-text-fill-color: transparent; */
}

.skill-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.skill-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ==================== PROJECTS SECTION ==================== */
.projects-section {
    background: var(--bg-secondary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.project-card {
    background: var(--bg-primary);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--card-hover-shadow);
}

.project-image {
    width: 100%;
    height: 250px;
    background: linear-gradient(135deg, #3b82f6 0%, #0ea5e9 100%);
    background-size: cover;           /* ensure project photos cover the area */
    background-position: center;      /* center the image */
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    position: relative;
    overflow: hidden;
}

/* Make an actual <img> inside project-image fill the area */
.project-image > img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.project-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    opacity: 0;
    transition: opacity 0.3s;
}

.project-card:hover .project-image::after {
    opacity: 1;
}

.project-content {
    padding: 1.5rem;
}

.project-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.project-tag {
    padding: 0.25rem 0.75rem;
    background: var(--bg-secondary);
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--primary-color);
    font-weight: 500;
}

/* Modal styles extracted from inline */
.project-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.project-modal-content {
    background: var(--bg-primary);
    color: var(--text-primary);
    width: min(900px, 100%);
    max-height: 90vh;
    overflow: auto;
    border-radius: 16px;
    box-shadow: var(--card-hover-shadow);
}

.project-modal-header {
    display:flex;
    justify-content: space-between;
    align-items:center;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.project-modal-body {
    padding: 1rem 1.25rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.project-modal-links {
    display:flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* ==================== CONTACT SECTION ==================== */
.contact-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-info {
    background: var(--bg-secondary);
    padding: 3rem;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
}

.contact-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--bg-primary);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: var(--transition);
    border: 2px solid var(--border-color);
}

.contact-link:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-3px);
}

.availability-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 2rem;
    padding: 0.5rem 1rem;
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
    border-radius: 20px;
    font-weight: 500;
}

.availability-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* ==================== FOOTER ==================== */
footer {
    background: var(--bg-dark);
    color: var(--text-light);
    padding: 3rem 2rem 1rem;
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.footer-link {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--primary-color);
}

.footer-divider {
    height: 1px;
    background: var(--border-color);
    margin: 2rem 0;
    opacity: 0.2;
}

.footer-copyright {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* ==================== RESPONSIVE DESIGN ==================== */
@media (max-width: 768px) {
    /* Theme toggle stays in same position on mobile */
    .theme-toggle {
        font-size: 1.5rem;
    }

    /* Responsive typography */
    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    /* Grid adjustments */
    .projects-grid {
        grid-template-columns: 1fr;
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 1rem;
    }

    /* Spacing adjustments */
    .section {
        padding: 3rem 1rem;
    }

    .nav-container {
        /* padding: 1rem; */
    }
}

/* Smooth scrolling for anchor links */
html {
    scroll-behavior: smooth;
}

/* Loading animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(99, 102, 241, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}