/* ===========================
   CSS Variables & Reset
   =========================== */
:root {
    /* Colors - Modern Dark Theme with Better Contrast */
    --bg-primary: #0a0e27;
    --bg-secondary: #0f1419;
    --bg-tertiary: #1a1f2e;
    --bg-elevated: #252b3a;
    --text-primary: #ffffff;
    --text-secondary: #b8c5d1;
    --text-tertiary: #8892a6;
    
    /* Accent Colors */
    --accent-primary: #00d9ff;
    --accent-secondary: #0099cc;
    --accent-gradient: linear-gradient(135deg, #00d9ff 0%, #0099cc 100%);
    --accent-glow: 0 0 20px rgba(0, 217, 255, 0.3);
    
    /* Status Colors */
    --success: #22c55e;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
    
    /* Border & Shadow */
    --border-color: rgba(255, 255, 255, 0.1);
    --border-subtle: rgba(255, 255, 255, 0.05);
    --border-medium: rgba(255, 255, 255, 0.15);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
    --glow: 0 0 30px rgba(0, 217, 255, 0.4);
    
    /* Typography Scale */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Fira Code', 'SF Mono', 'Roboto Mono', monospace;
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 2rem;        /* 32px */
    --font-size-4xl: 2.5rem;      /* 40px */
    --font-size-5xl: 3.5rem;      /* 56px */
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Spacing System - 8px base grid */
    --space-1: 0.25rem;   /* 4px */
    --space-2: 0.5rem;    /* 8px */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-5: 1.25rem;   /* 20px */
    --space-6: 1.5rem;    /* 24px */
    --space-8: 2rem;      /* 32px */
    --space-10: 2.5rem;   /* 40px */
    --space-12: 3rem;     /* 48px */
    --space-16: 4rem;     /* 64px */
    --space-20: 5rem;     /* 80px */
    --space-24: 6rem;     /* 96px */
    --space-32: 8rem;     /* 128px */
    
    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Z-index */
    --z-navbar: 1000;
    --z-modal: 2000;
    --z-tooltip: 3000;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: var(--line-height-normal);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===========================
   Typography
   =========================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: var(--line-height-tight);
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem); }
h2 { font-size: clamp(2rem, 3vw + 1rem, 3rem); }
h3 { font-size: clamp(1.25rem, 2vw + 0.5rem, 1.75rem); }

p {
    margin-bottom: var(--space-4);
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
}

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

a:hover {
    color: var(--accent);
}

/* Accessibility - Focus States */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ===========================
   Container & Layout
   =========================== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

@media (min-width: 1440px) {
    .container {
        padding: 0 var(--space-12);
    }
    
    .hero-content {
        gap: var(--space-24);
        max-width: 1400px;
    }
    
    section {
        padding: var(--space-32) 0;
    }
}

section {
    padding: var(--space-32) 0;
    position: relative;
}

/* ===========================
   Mobile Navigation
   =========================== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(10, 14, 39, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: var(--space-12);
        gap: var(--space-6);
        transition: left var(--transition-base);
        z-index: 999;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-link {
        font-size: var(--font-size-lg);
        padding: var(--space-4) var(--space-6);
        width: 200px;
        text-align: center;
        border-radius: var(--radius-lg);
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    /* Hero Mobile */
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--space-12);
        text-align: center;
        padding: 0 var(--space-4);
    }

    .hero-image {
        order: -1;
    }

    .avatar-container {
        max-width: 280px;
    }

    .hero-cta {
        justify-content: center;
    }

    .btn {
        min-width: 160px;
        justify-content: center;
    }

    /* Sections Mobile */
    section {
        padding: var(--space-16) 0;
    }

    .container {
        padding: 0 var(--space-4);
    }

    /* Skills Mobile */
    .skills-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    /* Projects Mobile */
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

/* ===========================
   Navigation
   =========================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-subtle);
    z-index: var(--z-navbar);
    transition: background var(--transition-base);
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 0.95);
    border-bottom-color: var(--border-medium);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--space-4) var(--space-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.logo-icon {
    font-size: var(--font-size-2xl);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-1);
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: var(--font-size-sm);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: var(--space-2);
    background: transparent;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-toggle:hover {
    border-color: var(--border-medium);
    background: var(--bg-tertiary);
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* ===========================
   Hero Section
   =========================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding-top: var(--space-20);
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    overflow: hidden;
}

.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--accent-primary);
    border-radius: 50%;
    opacity: 0.6;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); opacity: 0.6; }
    50% { transform: translateY(-20px) rotate(180deg); opacity: 1; }
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-20);
    align-items: center;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    position: relative;
    z-index: 2;
}

.hero-text {
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.greeting {
    display: block;
    color: var(--accent-primary);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--space-3);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    opacity: 0;
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.2s forwards;
}

.name {
    display: block;
    color: var(--text-primary);
    margin-bottom: var(--space-6);
    font-weight: 700;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0;
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.4s forwards;
}

.hero-subtitle {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-4);
    letter-spacing: -0.01em;
    opacity: 0;
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.6s forwards;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--accent-primary);
    margin-bottom: var(--space-4);
    font-weight: 500;
    opacity: 0;
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.8s forwards;
}

.hero-bio {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--text-tertiary);
    margin-bottom: var(--space-10);
    max-width: 540px;
    letter-spacing: -0.01em;
    opacity: 0;
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) 1s forwards;
}

.hero-cta {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-10);
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) 1.2s forwards;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    min-height: 48px; /* Better touch target */
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
    white-space: nowrap;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--glow);
    color: white;
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-medium);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(0, 217, 255, 0.1);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    color: var(--accent-primary);
    box-shadow: var(--shadow-lg);
}

.hero-social {
    display: flex;
    gap: var(--space-3);
    opacity: 0;
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) 1.4s forwards;
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.social-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.social-icon:hover {
    color: white;
    border-color: var(--accent-primary);
    transform: translateY(-3px);
    box-shadow: var(--glow);
}

.social-icon:hover::before {
    opacity: 1;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both;
}

.avatar-container {
    position: relative;
    width: 100%;
    max-width: 420px;
    aspect-ratio: 1;
}

.avatar {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-xl);
    object-fit: cover;
    border: 3px solid var(--accent-primary);
    position: relative;
    box-shadow: var(--glow);
    transition: all var(--transition-slow);
}

.avatar:hover {
    transform: scale(1.05);
    box-shadow: 0 0 40px rgba(0, 217, 255, 0.6);
}

.avatar-ring {
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border: 2px solid var(--accent-primary);
    border-radius: var(--radius-xl);
    opacity: 0.3;
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.3;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.05);
    }
}

.scroll-indicator {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    opacity: 0;
    animation: fadeIn 1s ease 2s forwards, bounce 2s cubic-bezier(0.4, 0, 0.2, 1) 2s infinite;
}

.scroll-indicator a {
    color: var(--accent-primary);
    font-size: var(--font-size-2xl);
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 2px solid var(--accent-primary);
    background: rgba(0, 217, 255, 0.1);
}

.scroll-indicator a:hover {
    color: white;
    background: var(--accent-primary);
    transform: translateY(-2px);
}

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

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40%, 43% {
        transform: translateX(-50%) translateY(-8px);
    }
    70% {
        transform: translateX(-50%) translateY(-4px);
    }
    90% {
        transform: translateX(-50%) translateY(-2px);
    }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

/* ===========================
   Section Headers
   =========================== */
.section-header {
    margin-bottom: var(--space-16);
    max-width: 720px;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: clamp(2rem, 3vw + 1rem, 2.75rem);
    margin-bottom: var(--space-6);
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: -0.02em;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

.section-divider {
    display: none;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-tertiary);
    line-height: var(--line-height-relaxed);
    font-weight: 400;
    margin-top: var(--space-4);
}

/* ===========================
   About Section
   =========================== */
.about {
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    gap: var(--space-16);
    max-width: 1280px;
    margin: 0 auto;
}

.about-text {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--text-secondary);
    max-width: 720px;
}

.about-text p {
    margin-bottom: var(--space-6);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-8);
    margin-top: var(--space-12);
}

.stat-item {
    padding: var(--space-6) 0;
    border-top: 1px solid var(--border-medium);
    transition: border-color var(--transition-base);
}

.stat-item:hover {
    border-top-color: var(--text-primary);
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    letter-spacing: -0.02em;
}

.stat-label {
    color: var(--text-tertiary);
    font-weight: 400;
    font-size: var(--font-size-sm);
}

/* ===========================
   Skills Section
   =========================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-8);
    max-width: 1280px;
    margin: 0 auto;
}

.skill-category {
    padding: 0;
    border: none;
    background: transparent;
    transition: all var(--transition-base);
}

.skill-category h3 {
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-6);
    color: var(--text-secondary);
    display: block;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

.skill-category h3 i {
    display: none; /* Remove icons */
}

.skill-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.skill-item {
    padding: var(--space-3) 0;
    margin-bottom: 0;
    background: transparent;
    border-radius: 0;
    color: var(--text-tertiary);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    transition: all var(--transition-fast);
    font-size: var(--font-size-sm);
    border-left: 2px solid transparent;
    padding-left: var(--space-4);
}

.skill-item:hover {
    background: transparent;
    color: var(--text-primary);
    border-left-color: var(--text-primary);
    padding-left: var(--space-5);
}

.skill-item::before {
    display: none; /* Remove arrow */
}

/* ===========================
   Projects Section
   =========================== */
.projects {
    background: var(--bg-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-20);
    max-width: 1280px;
    margin: 0 auto;
}

.project-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
    padding: 0;
    transition: all var(--transition-base);
    position: relative;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: 1;
    border-radius: var(--radius-xl);
}

.project-card:hover::before {
    opacity: 0.05;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--glow);
    border-color: var(--accent-primary);
}

/* Alternate layout for even projects */
.project-card:nth-child(even) {
    direction: rtl;
}

.project-card:nth-child(even) .project-content {
    direction: ltr;
}

.project-image {
    width: 100%;
    height: 100%;
    min-height: 400px;
    object-fit: cover;
    background: var(--bg-tertiary);
    transition: all var(--transition-base);
    position: relative;
    z-index: 2;
}

.project-card:hover .project-image {
    transform: scale(1.05);
}

.project-content {
    padding: var(--space-10);
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    z-index: 2;
}

.project-title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-4);
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: var(--line-height-tight);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
}

.tag {
    padding: var(--space-2) var(--space-3);
    background: rgba(0, 217, 255, 0.1);
    color: var(--accent-primary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    border: 1px solid rgba(0, 217, 255, 0.2);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-8);
}

.tech-badge {
    padding: var(--space-2) var(--space-3);
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-family: var(--font-mono);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.tech-badge:hover {
    color: var(--text-primary);
    border-color: var(--accent-primary);
}

.project-links {
    display: flex;
    gap: var(--space-4);
}

.project-link {
    flex: 1;
    padding: var(--space-3) var(--space-6);
    min-height: 48px;
    text-align: center;
    border-radius: var(--radius-lg);
    font-weight: 600;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.project-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

.project-link:hover::before {
    left: 100%;
}

.project-link.live {
    background: var(--accent-gradient);
    color: white;
    border: 2px solid transparent;
}

.project-link.live:hover {
    transform: translateY(-2px);
    box-shadow: var(--glow);
    color: white;
}

.project-link.github {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-medium);
}

.project-link.github:hover {
    background: rgba(0, 217, 255, 0.1);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-2px);
}

/* ===========================
   Experience Section
   =========================== */
.timeline {
    position: relative;
    max-width: 1280px;
    margin: 0 auto var(--space-20);
    padding-left: 0;
}

.timeline::before {
    display: none; /* Remove decorative timeline line */
}

.timeline-item {
    position: relative;
    margin-bottom: var(--space-16);
    padding: var(--space-12) 0;
    background: transparent;
    border-radius: 0;
    border: none;
    border-top: 1px solid var(--border-subtle);
    transition: border-color var(--transition-base);
}

.timeline-item:first-child {
    border-top: none;
}

.timeline-item:hover {
    transform: none;
    border-top-color: var(--border-medium);
}

.timeline-item::before {
    display: none; /* Remove decorative dot */
}

.experience-header {
    margin-bottom: var(--space-6);
}

.experience-role {
    font-size: var(--font-size-2xl);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.experience-company {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: var(--space-2);
}

.experience-duration {
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.experience-description {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.experience-description li {
    padding: 0;
    padding-left: var(--space-5);
    color: var(--text-tertiary);
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    border-left: 2px solid var(--border-subtle);
    transition: border-color var(--transition-fast);
}

.experience-description li:hover {
    border-left-color: var(--text-primary);
}

.experience-description li::before {
    display: none; /* Remove arrow */
}

/* Certifications */
.certifications-section {
    margin-top: var(--space-20);
}

.subsection-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-12);
    color: var(--text-primary);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-8);
}

.cert-card {
    background: transparent;
    padding: var(--space-8) 0;
    border-radius: 0;
    border: none;
    border-top: 1px solid var(--border-subtle);
    transition: border-color var(--transition-base);
}

.cert-card:hover {
    transform: none;
    border-top-color: var(--border-medium);
}

.cert-name {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    margin-bottom: var(--space-3);
    font-weight: 600;
}

.cert-issuer {
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: var(--space-2);
    font-size: var(--font-size-sm);
}

.cert-date {
    color: var(--text-tertiary);
    font-size: var(--font-size-xs);
    margin-bottom: var(--space-4);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.cert-description {
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
}

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-20);
    max-width: 1280px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-5);
    padding: 0;
    background: transparent;
    border-radius: 0;
    border: none;
    transition: all var(--transition-base);
}

.contact-item:hover {
    transform: none;
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-xl);
    flex-shrink: 0;
    border: 1px solid var(--border-subtle);
}

.contact-details h4 {
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-2);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

.contact-details p,
.contact-details a {
    color: var(--text-primary);
    font-size: var(--font-size-base);
}

.contact-details a:hover {
    color: var(--accent);
}

.contact-social {
    text-align: left;
}

.contact-social h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-8);
    color: var(--text-primary);
    font-weight: 600;
}

.social-links-large {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.social-link-large {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) 0;
    background: transparent;
    border-radius: 0;
    border: none;
    border-top: 1px solid var(--border-subtle);
    color: var(--text-primary);
    transition: all var(--transition-base);
    font-size: var(--font-size-base);
}

.social-link-large:first-child {
    border-top: none;
}

.social-link-large:hover {
    background: transparent;
    color: var(--accent);
    transform: none;
    border-top-color: var(--border-medium);
}

.social-link-large i {
    font-size: var(--font-size-xl);
}

/* ===========================
   Footer
   =========================== */
.footer {
    background: var(--bg-primary);
    padding: var(--space-20) 0 var(--space-8);
    border-top: 1px solid var(--border-subtle);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer-brand h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.footer-brand p {
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-links a {
    color: var(--text-tertiary);
    transition: color var(--transition-fast);
    font-size: var(--font-size-sm);
}

.footer-links a:hover {
    color: var(--text-primary);
    padding-left: 0;
}

.footer-links .admin-link {
    color: var(--text-tertiary);
    font-size: var(--font-size-xs);
    opacity: 0.5;
}

.footer-social {
    display: flex;
    gap: var(--space-3);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-subtle);
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
}

/* ===========================
   Back to Top Button
   =========================== */
.back-to-top {
    position: fixed;
    bottom: var(--space-8);
    right: var(--space-8);
    width: 48px;
    height: 48px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    font-size: var(--font-size-lg);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--bg-elevated);
    border-color: var(--text-primary);
    transform: translateY(-2px);
}

/* ===========================
   Animations
   =========================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(-8px);
    }
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: left;
        gap: var(--space-12);
    }
    
    .hero-image {
        order: -1;
    }
    
    .avatar-container {
        max-width: 300px;
        margin: 0 auto;
    }
    
    .hero-cta,
    .hero-social {
        justify-content: flex-start;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--space-16);
    }
    
    .project-card {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .project-image {
        height: 300px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        max-width: 300px;
        height: calc(100vh - 70px);
        background: rgba(0, 0, 0, 0.98);
        backdrop-filter: blur(12px);
        flex-direction: column;
        padding: var(--space-6);
        border-left: 1px solid var(--border-medium);
        transition: right var(--transition-slow);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    .projects-grid,
    .skills-grid,
    .certifications-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 15px;
    }
    
    .container {
        padding: 0 var(--space-4);
    }
    
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .avatar-container {
        max-width: 240px;
    }
    
    .back-to-top {
        bottom: var(--space-4);
        right: var(--space-4);
        width: 44px;
        height: 44px;
    }
    
    .project-image {
        height: 240px;
    }
}

/* ===========================
   Utility Classes
   =========================== */
.text-gradient {
    color: var(--text-primary); /* Remove gradient effect */
}

.hidden {
    display: none;
}

.fadeIn {
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 1;
}

/* ===========================
   Loading State
   =========================== */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-medium);
    border-top-color: var(--text-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    max-width: 1280px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-6);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.contact-item:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--accent-gradient);
    border-radius: var(--radius-lg);
    color: white;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.contact-details h4 {
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    font-weight: 600;
}

.contact-details p,
.contact-details a {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    transition: color var(--transition-fast);
}

.contact-details a:hover {
    color: var(--accent-primary);
}

.contact-social {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.contact-social h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-8);
    font-size: var(--font-size-2xl);
    font-weight: 600;
}

.social-links-large {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    width: 100%;
    max-width: 300px;
}

.social-link-large {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-6);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-weight: 500;
    transition: all var(--transition-base);
    text-decoration: none;
}

.social-link-large:hover {
    background: var(--accent-gradient);
    border-color: var(--accent-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--glow);
}

.social-link-large i {
    font-size: var(--font-size-xl);
    width: 24px;
    text-align: center;
}

/* ===========================
   Footer
   =========================== */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--space-8);
    align-items: center;
    margin-bottom: var(--space-8);
}

.footer-brand h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.footer-brand p {
    color: var(--text-tertiary);
    margin: 0;
}

.footer-links {
    display: flex;
    gap: var(--space-6);
    justify-content: center;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-primary);
}

.admin-link {
    opacity: 0.5;
    font-size: var(--font-size-xs) !important;
}

.footer-social {
    display: flex;
    gap: var(--space-3);
    justify-content: flex-end;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
    margin: 0;
}

/* ===========================
   Back to Top Button
   =========================== */
.back-to-top {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    width: 48px;
    height: 48px;
    background: var(--accent-gradient);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: var(--font-size-lg);
    transition: all var(--transition-base);
    opacity: 0;
    visibility: hidden;
    z-index: var(--z-navbar);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-2px);
    box-shadow: var(--glow);
}

/* ===========================
   Enhanced Mobile Responsiveness
   =========================== */
@media (max-width: 1024px) {
    .hero-content {
        gap: var(--space-16);
    }
    
    .project-card {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .project-card:nth-child(even) {
        direction: ltr;
    }
    
    .project-image {
        min-height: 300px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-6);
    }
    
    .footer-social {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    /* Enhanced mobile navigation */
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(10, 14, 39, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: var(--space-12);
        gap: var(--space-6);
        transition: left var(--transition-base);
        z-index: 999;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-link {
        font-size: var(--font-size-lg);
        padding: var(--space-4) var(--space-6);
        width: 200px;
        text-align: center;
        border-radius: var(--radius-lg);
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    /* Hero Mobile */
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--space-12);
        text-align: center;
        padding: 0 var(--space-4);
    }

    .hero-image {
        order: -1;
    }

    .avatar-container {
        max-width: 280px;
    }

    .hero-cta {
        justify-content: center;
    }

    .btn {
        min-width: 160px;
        justify-content: center;
    }

    /* Sections Mobile */
    section {
        padding: var(--space-16) 0;
    }

    .container {
        padding: 0 var(--space-4);
    }

    /* Skills Mobile */
    .skills-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    /* Projects Mobile */
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .project-content {
        padding: var(--space-6);
    }
    
    .project-links {
        flex-direction: column;
    }
    
    /* Contact Mobile */
    .contact-item {
        flex-direction: column;
        text-align: center;
    }
    
    .social-links-large {
        max-width: 100%;
    }
    
    /* Footer Mobile */
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--space-4);
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .project-links {
        gap: var(--space-2);
    }
    
    .project-link {
        padding: var(--space-3) var(--space-4);
        font-size: var(--font-size-xs);
    }
}

/* ===========================
   Accessibility Improvements
   =========================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for better accessibility */
.btn:focus-visible,
.nav-link:focus-visible,
.social-icon:focus-visible,
.project-link:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --bg-primary: #000000;
        --bg-secondary: #111111;
        --text-primary: #ffffff;
        --text-secondary: #cccccc;
        --border-color: #444444;
        --accent-primary: #00ffff;
    }
}