/* ================= BASE & VARIABLES ================= */
:root {
    /* Light Theme (Default fallback) */
    --bg-color: #f8fafc;
    --text-color: #0f172a;
    --text-muted: #64748b;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.4);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.05);
    
    /* Gradients */
    --hero-gradient: linear-gradient(135deg, #e0e7ff 0%, #f8fafc 100%);
    
    /* Spacing */
    --section-padding: 100px 20px;
    
    /* Skills Colors */
    --html-color: #e34f26;
    --css-color: #1572b6;
    --js-color: #f7df1e;
    --react-color: #61dafb;
    scroll-behavior: smooth;
}

[data-theme="dark"] {
    --bg-color: #0b0f19;
    --text-color: #f1f5f9;
    --text-muted: #94a3b8;
    --accent-color: #60a5fa;
    --accent-hover: #93c5fd;
    
    --glass-bg: rgba(15, 23, 42, 0.6);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    
    --hero-gradient: linear-gradient(135deg, #0b0f19 0%, #111827 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.4s ease, color 0.4s ease;
    overflow-x: hidden;
}

body.loading-state {
    overflow: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-padding {
    padding: var(--section-padding);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 40px;
    height: 4px;
    background-color: var(--accent-color);
    border-radius: 2px;
}

/* ================= SCROLLBAR ================= */
::-webkit-scrollbar {
    width: 12px;
}

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

::-webkit-scrollbar-thumb {
    background-color: var(--text-muted);
    border-radius: 10px;
    border: 3px solid var(--bg-color);
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--accent-color);
}

/* ================= CURSOR GLOW ================= */
.cursor-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--accent-color) 0%, transparent 60%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    opacity: 0.05;
    z-index: 9999;
    transition: width 0.3s, height 0.3s, opacity 0.3s;
    mix-blend-mode: screen;
}

/* ================= LOADING SCREEN ================= */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.loading-text {
    font-size: clamp(3rem, 10vw, 8rem);
    font-weight: 800;
    color: transparent;
    -webkit-text-stroke: 1px var(--glass-border);
    position: relative;
}

.loading-text::before {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    color: var(--accent-color);
    -webkit-text-stroke: 0;
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg width='200' height='1000' viewBox='0 0 200 1000' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M 0 50 Q 50 0 100 50 T 200 50 L 200 1000 L 0 1000 Z' fill='black'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg width='200' height='1000' viewBox='0 0 200 1000' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M 0 50 Q 50 0 100 50 T 200 50 L 200 1000 L 0 1000 Z' fill='black'/%3E%3C/svg%3E");
    -webkit-mask-size: 200px 1000px;
    mask-size: 200px 1000px;
    -webkit-mask-repeat: repeat-x;
    mask-repeat: repeat-x;
    animation: waveFill 3s ease-in-out forwards;
}

@keyframes waveFill {
    0% { 
        -webkit-mask-position: 0px 200px;
        mask-position: 0px 200px;
    }
    100% { 
        -webkit-mask-position: 250px -100px;
        mask-position: 250px -100px;
    }
}

/* ================= NAVBAR ================= */
#navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    justify-content: center;
    padding: 30px 20px;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 1200px;
    transition: all 0.4s ease;
}

.nav-logo i {
    font-size: 2rem;
    color: var(--text-color);
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links li a {
    position: relative;
    font-size: 1.5rem;
    color: var(--text-muted);
    transition: color 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.nav-links li a:hover {
    color: var(--accent-color);
}

.tooltip {
    position: absolute;
    top: 100%;
    margin-top: 10px;
    font-size: 0.75rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    pointer-events: none;
    white-space: nowrap;
}

.nav-links li a:hover .tooltip {
    opacity: 1;
    transform: translateY(0);
}

#theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-color);
    transition: transform 0.3s ease;
}

#theme-toggle:hover {
    transform: rotate(20deg) scale(1.1);
}

/* Scrolled Navbar State */
#navbar.scrolled {
    padding: 15px 20px;
}

#navbar.scrolled .nav-container {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    padding: 10px 30px;
    box-shadow: var(--glass-shadow);
    max-width: 600px;
}

/* ================= HERO SECTION ================= */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 0 20px;
    background: var(--hero-gradient);
    overflow: hidden;
}

.hero-content {
    max-width: 800px;
    text-align: center;
    z-index: 2;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
}

.line-1 {
    font-weight: 300;
    font-size: 0.5em;
    color: var(--text-muted);
}

.line-2 {
    color: var(--accent-color);
    min-height: 1.2em; /* Prevent layout shift */
}

.cursor {
    animation: blink 1s infinite;
}

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

.hero-bio {
    font-size: 1.125rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

.hero-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.btn {
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 600;
    font-family: 'Outfit', sans-serif;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    outline: none;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #fff;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: var(--text-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* Background Orbs */
.hero-bg-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
    pointer-events: none;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}

.orb-1 {
    width: 300px;
    height: 300px;
    background: var(--accent-color);
    top: -100px;
    left: -100px;
    animation: float 10s infinite alternate;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: #8b5cf6;
    bottom: -150px;
    right: -100px;
    animation: float 12s infinite alternate-reverse;
}

@keyframes float {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

/* ================= SKILLS SECTION ================= */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.skill-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--glass-shadow);
    transition: transform 0.3s ease;
}

.skill-card:hover {
    transform: translateY(-5px);
}

.skill-info {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.skill-icon {
    font-size: 2.5rem;
    margin-right: 15px;
}

.html-color { color: var(--html-color); }
.css-color { color: var(--css-color); }
.js-color { color: var(--js-color); }
.react-color { color: var(--react-color); }

.skill-name {
    font-weight: 600;
    font-family: 'Outfit', sans-serif;
    flex-grow: 1;
}

.skill-percent {
    font-weight: 700;
    color: var(--accent-color);
    margin-left: 0.75rem;
}

.progress-bar-bg {
    width: 100%;
    height: 8px;
    background: rgba(0,0,0,0.1);
    border-radius: 4px;
    overflow: hidden;
}

[data-theme="dark"] .progress-bar-bg {
    background: rgba(255,255,255,0.1);
}

.progress-bar {
    height: 100%;
    background: var(--accent-color);
    border-radius: 4px;
    width: 0%; /* Animated via JS */
    transition: width 1.5s cubic-bezier(0.25, 1, 0.5, 1);
}

/* ================= PROJECTS SECTION ================= */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 40px;
}

.view-more-link {
    display: flex;
    align-items: center;
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 2rem;
    transition: transform 0.3s ease;
}

.view-more-link i {
    margin-left: 5px;
    transition: transform 0.3s ease;
}

.view-more-link:hover i {
    transform: translateX(5px);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
}

.project-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--glass-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}

[data-theme="dark"] .project-card:hover {
    box-shadow: 0 15px 40px rgba(0,0,0,0.5);
}

.project-img-wrapper {
    position: relative;
    height: 220px;
    overflow: hidden;
    background: rgba(0,0,0,0.05);
}

[data-theme="dark"] .project-img-wrapper {
    background: rgba(255,255,255,0.05);
}

.img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-muted);
    font-weight: 600;
    font-family: 'Outfit', sans-serif;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.project-links-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-card:hover .project-links-overlay {
    opacity: 1;
}

.project-links-overlay a {
    width: 50px;
    height: 50px;
    background: #fff;
    color: #000;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    transform: translateY(20px);
    transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
}

.project-card:hover .project-links-overlay a {
    transform: translateY(0);
}

.project-links-overlay a:hover {
    background: var(--accent-color);
    color: #fff;
}

.project-info {
    padding: 25px;
}

.project-title {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.project-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.project-tags span {
    padding: 5px 12px;
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-color);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* ================= CERTIFICATIONS SECTION ================= */
.cert-highlight {
    max-width: 800px;
    margin: 0 auto;
}

.cert-card {
    display: flex;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--glass-shadow);
    align-items: center;
}

.cert-img-placeholder {
    width: 300px;
    height: 200px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 20px;
    color: var(--text-muted);
}

.cert-img-placeholder i {
    font-size: 3rem;
    color: var(--accent-color);
    margin-bottom: 10px;
}

.cert-details {
    padding: 30px;
    flex: 1;
}

.cert-details h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.cert-details p {
    color: var(--text-muted);
}

.cert-card .cert-img-placeholder.has-image {
    position: relative;
    cursor: zoom-in;
}

.cert-card .cert-img-placeholder.has-image::after {
    content: "Click to enlarge";
    position: absolute;
    right: 10px;
    bottom: 10px;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    font-size: 0.75rem;
    padding: 4px 8px;
    border-radius: 999px;
}

.cert-lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
    z-index: 10001;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.cert-lightbox.active {
    display: flex;
}

.cert-lightbox-content {
    max-width: min(1100px, 95vw);
    max-height: 88vh;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 16px;
    overflow: hidden;
    background: #0b0f19;
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.6);
}

#cert-lightbox-image {
    max-width: 100%;
    max-height: 88vh;
    display: block;
}

.cert-lightbox-close {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 42px;
    height: 42px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    background: rgba(0, 0, 0, 0.65);
    color: #fff;
    cursor: pointer;
    z-index: 2;
    font-size: 1.2rem;
}

/* ================= CONTACT / SOCIAL SECTION ================= */
.contact-section {
    text-align: center;
}

.contact-subtitle {
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.social-dock {
    display: inline-flex;
    gap: 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    padding: 15px 30px;
    border-radius: 50px;
    box-shadow: var(--glass-shadow);
}

.social-btn {
    position: relative;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.8rem;
    color: var(--text-color);
    background: rgba(0,0,0,0.03);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid transparent;
    cursor: pointer;
}

[data-theme="dark"] .social-btn {
    background: rgba(255,255,255,0.05);
}

.social-btn:hover {
    transform: translateY(-8px) scale(1.1);
}

.social-btn.github:hover {
    color: #333;
    border-color: #333;
    box-shadow: 0 10px 20px rgba(51, 51, 51, 0.2);
}
[data-theme="dark"] .social-btn.github:hover {
    color: #fff;
    border-color: #fff;
    box-shadow: 0 10px 20px rgba(255, 255, 255, 0.2);
}

.social-btn.instagram:hover {
    color: #E1306C;
    border-color: #E1306C;
    box-shadow: 0 10px 20px rgba(225, 48, 108, 0.2);
}

.social-btn.whatsapp {
    position: relative;
}
.social-btn.whatsapp::after {
    content: '';
    position: absolute;
    top: 5px;
    right: 5px;
    width: 10px;
    height: 10px;
    background-color: #25D366;
    border-radius: 50%;
    border: 2px solid var(--bg-color);
}
.social-btn.whatsapp:hover {
    color: #25D366;
    border-color: #25D366;
    box-shadow: 0 10px 20px rgba(37, 211, 102, 0.2);
}

.social-btn.email:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.2);
}

.social-tooltip {
    position: absolute;
    top: -40px;
    background: var(--text-color);
    color: var(--bg-color);
    font-size: 0.8rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    padding: 5px 12px;
    border-radius: 8px;
    pointer-events: none;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
    white-space: nowrap;
}

.social-btn:hover .social-tooltip {
    opacity: 1;
    transform: translateY(0);
}

/* ================= FOOTER ================= */
footer {
    text-align: center;
    padding: 30px 0;
    margin-top: 50px;
    border-top: 1px solid var(--glass-border);
    color: var(--text-muted);
}

footer i {
    color: #ef4444;
}

/* ================= ANIMATIONS & UTILITIES ================= */
.fade-in {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
    will-change: opacity, transform;
}

.fade-in.appear {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
    will-change: opacity, transform;
}

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

/* ================= PAGE ENTRANCE ================= */
body.loading-state #main-content,
body.loading-state footer {
    opacity: 0;
    transform: translateY(30px) scale(0.98);
    filter: blur(10px);
}

#main-content, footer {
    transition: opacity 1.2s cubic-bezier(0.25, 1, 0.5, 1), 
                transform 1.2s cubic-bezier(0.25, 1, 0.5, 1), 
                filter 1.2s cubic-bezier(0.25, 1, 0.5, 1);
}

/* ================= RESPONSIVE ================= */
@media (max-width: 768px) {
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    #navbar {
        padding: 20px;
    }
    
    #navbar.scrolled .nav-container {
        padding: 10px 20px;
    }
    
    .nav-links {
        display: none; /* Hide on mobile initially for simplicity, or use a hamburger */
    }
    
    /* Simple mobile nav showing just icons */
    .nav-links {
        display: flex;
        gap: 15px;
    }
    
    .nav-links li a span {
        display: none; /* Hide tooltips on mobile */
    }
    
    .cert-card {
        flex-direction: column;
    }
    
    .cert-img-placeholder {
        width: 100%;
        border-bottom: 1px solid var(--glass-border);
    }
    
    .social-dock {
        flex-wrap: wrap;
        justify-content: center;
        border-radius: 20px;
        padding: 20px;
    }
}