/* Global Styles */
:root {
    --primary-color: #c0c0c0;
    --secondary-color: #a8a8a8;
    --accent-color: #e8e8e8;
    --highlight-color: #f0f0f0;
    --text-color: #e6e6e6;
    --text-muted: #999999;
    --dark-bg: #0a0a0a;
    --darker-bg: #000000;
    --card-bg: #1a1a1a;
    --border-radius: 4px;
    --transition: all 0.2s ease;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
    --metallic: linear-gradient(135deg, #c0c0c0 0%, #808080 50%, #c0c0c0 100%);
    --glow: 0 0 10px rgba(192, 192, 192, 0.3);
}

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

body {
    font-family: 'Inter', 'Segoe UI', sans-serif;
    line-height: 1.5;
    color: var(--text-color);
    background: var(--dark-bg);
    overflow-x: hidden;
    scroll-behavior: smooth;
}

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

ul {
    list-style: none;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.section {
    padding: 4rem 0;
}

.section-title {
    font-size: 2rem;
    margin-bottom: 1rem;
    text-align: center;
    position: relative;
    color: var(--text-color);
    display: inline-block;
    padding-bottom: 10px;
    font-weight: 600;
}

.section-title::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 2px;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    background: var(--metallic);
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    background: var(--metallic);
    color: var(--dark-bg);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--primary-color);
    outline: none;
    margin: 0.5rem;
    text-decoration: none;
    font-size: 0.9rem;
}

.btn:hover {
    background: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--glow);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--dark-bg);
}

/* Loading Screen */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--dark-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loader {
    text-align: center;
}

.loader-text {
    display: flex;
    gap: 0.2rem;
    margin-bottom: 2rem;
}

.letter {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    animation: bounce 1.4s infinite;
}

.letter:nth-child(1) { animation-delay: 0s; }
.letter:nth-child(2) { animation-delay: 0.1s; }
.letter:nth-child(3) { animation-delay: 0.2s; }
.letter:nth-child(4) { animation-delay: 0.3s; }
.letter:nth-child(5) { animation-delay: 0.4s; }
.letter:nth-child(6) { animation-delay: 0.5s; }

@keyframes bounce {
    0%, 80%, 100% { transform: scale(1); }
    40% { transform: scale(1.2); }
}

.loader-bar {
    width: 200px;
    height: 4px;
    background: rgba(192, 192, 192, 0.2);
    border-radius: 2px;
    overflow: hidden;
}

.loader-progress {
    height: 100%;
    background: var(--metallic);
    border-radius: 2px;
    animation: loading 2s ease-in-out;
}

@keyframes loading {
    0% { width: 0%; }
    100% { width: 100%; }
}

/* Particles Background */
#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
}

/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 999;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    background-color: rgba(10, 10, 10, 0.9);
    border-bottom: 1px solid rgba(192, 192, 192, 0.1);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

header.scrolled {
    padding: 0.8rem 0;
    background-color: rgba(10, 10, 10, 0.95);
    box-shadow: var(--shadow);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 1px;
    position: relative;
    transition: all 0.3s ease;
    cursor: pointer;
}

.animated-logo {
    background: var(--metallic);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
    display: inline-block;
}

.animated-logo:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    color: var(--text-color);
    transition: all 0.3s ease;
}

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

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

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

.toggle-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    min-height: 100vh;
    padding-top: 5rem;
    position: relative;
    z-index: 1;
}

.hero-greeting {
    color: var(--primary-color);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    display: block;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 2rem;
    position: relative;
    font-weight: 700;
}

.gradient-text {
    background: var(--metallic);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
    display: inline-block;
    text-shadow: 0 0 10px rgba(192, 192, 192, 0.5);
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-color);
    margin-bottom: 2rem;
    position: relative;
    min-height: 2rem;
    display: flex;
    align-items: center;
}

.cursor {
    color: var(--primary-color);
    animation: blink 1s infinite;
    font-weight: 100;
    margin-left: 2px;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-content {
    flex: 1;
    padding-right: 2rem;
    position: relative;
    z-index: 2;
}

.hero-description {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-muted);
    margin-bottom: 3rem;
}

.hero-scroll {
    text-align: center;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
}

.hero-scroll:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.bounce-animation {
    animation: bounce-slow 2s ease-in-out infinite;
}

@keyframes bounce-slow {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

/* Animation Classes */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

/* Project Card Styles */
.project-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    border: 1px solid rgba(192, 192, 192, 0.1);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-2px);
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(192, 192, 192, 0.1);
}

.project-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-title {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.project-title i {
    color: var(--primary-color);
}

.project-desc {
    color: var(--text-muted);
    margin-bottom: 1rem;
    flex: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tag {
    background: transparent;
    color: var(--primary-color);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    border: 1px solid var(--primary-color);
}

.project-links {
    display: flex;
    gap: 1rem;
    margin-top: auto;
}

.project-links .btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    background: var(--metallic);
    color: var(--dark-bg);
    border-radius: var(--border-radius);
    text-decoration: none;
    transition: var(--transition);
    border: none;
    font-weight: 500;
}

.project-links .btn:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1.5rem;
}

.skill-card {
    background: var(--card-bg);
    border: 1px solid rgba(192, 192, 192, 0.1);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    transition: var(--transition);
    text-align: center;
}

.skill-card:hover {
    transform: translateY(-2px);
    border-color: var(--primary-color);
    box-shadow: var(--glow);
}

.skill-card i {
    color: var(--primary-color) !important;
    font-size: 2.5rem;
}

.skill-card h4 {
    margin-top: 1rem;
    color: var(--text-color);
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

/* Skills Container */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.skill-category {
    margin-bottom: 3rem;
}

.category-title {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    text-align: center;
    font-weight: 600;
}

.skill-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.skill-icon {
    color: var(--primary-color);
}

/* Footer */
footer {
    background-color: var(--card-bg);
    padding: 3rem 0;
    margin-top: 5rem;
    border-top: 1px solid rgba(192, 192, 192, 0.1);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

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

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--card-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    border: 1px solid rgba(192, 192, 192, 0.1);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.social-link:hover {
    transform: translateY(-2px);
    color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .toggle-btn {
        display: block;
        z-index: 1000;
        padding: 10px;
        margin: -10px;
        font-size: 1.6rem;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        width: 250px;
        height: 100vh;
        flex-direction: column;
        gap: 0;
        background-color: var(--card-bg);
        transform: translateX(100%);
        opacity: 1;
        pointer-events: none;
        transition: transform 0.3s ease;
        z-index: 999;
        padding-top: 70px;
        box-shadow: var(--shadow);
    }

    .nav-links.active {
        transform: translateX(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav-links a {
        display: block;
        padding: 1rem 2rem;
        border-bottom: 1px solid rgba(192, 192, 192, 0.1);
        width: 100%;
        text-align: left;
    }

    .nav-links a::after {
        display: none;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .hero-btns {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }

    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2rem;
    }

    .gradient-text {
        font-size: 2rem;
    }

    .section {
        padding: 3rem 0;
    }

    .section-title {
        font-size: 1.8rem;
    }
}

@media (max-width: 400px) {
    .hero-title {
        font-size: 1.8rem;
    }

    .gradient-text {
        font-size: 1.8rem;
    }

    .container {
        width: 95%;
    }
}