/* ==========================================================================
   DESIGN SYSTEM & VARIABLES
   ========================================================================== */
:root {
    /* Fonts */
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

    /* Transition Speeds */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    /* Grid & Container */
    --container-max-width: 1200px;
    --section-padding: 100px 0;

    /* Theme colors: Dark Mode (Default) */
    --bg-primary: #0a0d16;
    --bg-secondary: rgba(16, 22, 38, 0.7);
    --bg-tertiary: #161f38;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --accent-color-1: #8b5cf6; /* Violet */
    --accent-color-2: #06b6d4; /* Cyan */
    --gradient-accent: linear-gradient(135deg, var(--accent-color-1) 0%, var(--accent-color-2) 100%);
    --gradient-accent-hover: linear-gradient(135deg, #7c3aed 0%, #0891b2 100%);
    --gradient-text: linear-gradient(135deg, #a78bfa 0%, #22d3ee 100%);
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-hover: rgba(255, 255, 255, 0.16);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    --shadow-accent: 0 10px 25px -5px rgba(139, 92, 246, 0.3);
    
    --glass-bg: rgba(16, 22, 38, 0.6);
    --glass-blur: blur(16px);
    --glass-border: 1px solid rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);

    /* Brands colored variables */
    --html-color: #e34c26;
    --css-color: #264de4;
    --js-color: #f0db4f;
    --react-color: #61dbfb;
    --node-color: #3c873a;
    --sql-color: #00758f;
    --py-color: #306998;
    --api-color: #00b4d8;
    --git-color: #f1502f;
    --docker-color: #0db7ed;
    --aws-color: #ff9900;
    --figma-color: #f24e1e;
}

/* Theme colors: Light Mode */
[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: rgba(255, 255, 255, 0.75);
    --bg-tertiary: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --accent-color-1: #6366f1; /* Indigo */
    --accent-color-2: #3b82f6; /* Blue */
    --gradient-accent: linear-gradient(135deg, var(--accent-color-1) 0%, var(--accent-color-2) 100%);
    --gradient-accent-hover: linear-gradient(135deg, #4f46e5 0%, #2563eb 100%);
    --gradient-text: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
    
    --border-color: rgba(15, 23, 42, 0.08);
    --border-color-hover: rgba(15, 23, 42, 0.16);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.15);
    --shadow-accent: 0 10px 25px -5px rgba(99, 102, 241, 0.2);
    
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-blur: blur(16px);
    --glass-border: 1px solid rgba(15, 23, 42, 0.06);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
}

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

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.25;
}

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

ul {
    list-style: none;
}

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

button, input, textarea {
    font-family: inherit;
    font-size: inherit;
    outline: none;
    border: none;
    background: none;
}

button {
    cursor: pointer;
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 5px;
    border: 2px solid var(--bg-primary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color-1);
}

/* Scroll Progress Bar */
#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: var(--gradient-accent);
    width: 0%;
    z-index: 1000;
    transition: width 0.1s ease-out;
}

/* ==========================================================================
   REUSABLE UTILITIES
   ========================================================================== */
.container {
    width: 90%;
    max-width: var(--container-max-width);
    margin: 0 auto;
}

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

.text-gradient {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Section Header */
.section-header {
    margin-bottom: 60px;
}

.section-subtitle {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
    margin-bottom: 10px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
}

.title-divider {
    width: 60px;
    height: 4px;
    background: var(--gradient-accent);
    border-radius: 2px;
    margin: 15px auto 0;
}

/* Custom Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 28px;
    font-family: var(--font-heading);
    font-weight: 600;
    border-radius: 30px;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary {
    background: var(--gradient-accent);
    color: #ffffff;
    box-shadow: var(--shadow-accent);
}

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

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px -5px rgba(139, 92, 246, 0.5);
}

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

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-color-1);
    transform: translateY(-2px);
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 999;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border-bottom: var(--glass-border);
    box-shadow: var(--glass-shadow);
    transition: background var(--transition-normal), border var(--transition-normal);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    width: 90%;
    max-width: var(--container-max-width);
    margin: 0 auto;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    display: flex;
    align-items: center;
}

.logo-bracket {
    color: var(--accent-color-1);
    font-weight: 600;
}

.logo-dot {
    color: var(--accent-color-2);
}

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

.nav-link {
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary);
    position: relative;
    padding: 5px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--gradient-accent);
    transition: width var(--transition-normal);
}

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Theme Toggle Button */
.theme-toggle {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.theme-toggle:hover {
    border-color: var(--accent-color-1);
    box-shadow: 0 0 10px rgba(139, 92, 246, 0.2);
    transform: rotate(15deg);
}

/* Control Icon Visibility based on theme */
.sun-icon {
    display: none;
}

[data-theme="light"] .sun-icon {
    display: block;
}

[data-theme="light"] .moon-icon {
    display: none;
}

/* Mobile Toggle Hamburger */
.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    z-index: 1001;
}

.mobile-toggle .bar {
    height: 3px;
    width: 100%;
    background-color: var(--text-primary);
    border-radius: 10px;
    transition: var(--transition-normal);
}

/* Hamburger active transformation */
.mobile-toggle.active .bar:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.mobile-toggle.active .bar:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active .bar:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    overflow: hidden;
}

/* Animated background glow shapes */
.hero-bg-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
    animation: blob-float 20s infinite alternate;
}

[data-theme="light"] .shape {
    opacity: 0.08;
}

.shape-1 {
    top: 10%;
    left: 10%;
    width: 400px;
    height: 400px;
    background: var(--accent-color-1);
}

.shape-2 {
    bottom: 10%;
    right: 15%;
    width: 500px;
    height: 500px;
    background: var(--accent-color-2);
    animation-delay: 5s;
}

.shape-3 {
    top: 40%;
    left: 50%;
    width: 300px;
    height: 300px;
    background: var(--accent-color-1);
    animation-delay: 10s;
}

@keyframes blob-float {
    0% {
        transform: translate(0px, 0px) scale(1);
    }
    33% {
        transform: translate(30px, -50px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.95);
    }
    100% {
        transform: translate(0px, 0px) scale(1);
    }
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 50px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-subtitle {
    display: inline-block;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent-color-2);
    margin-bottom: 15px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 15px;
}

.hero-typing {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 25px;
    height: 45px;
}

.typing-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.typed-cursor {
    color: var(--accent-color-2);
    animation: flash 1s infinite;
}

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

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 580px;
}

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

/* Avatar Visual container */
.hero-visual {
    display: flex;
    justify-content: center;
}

.avatar-wrapper {
    position: relative;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    padding: 10px;
    background: var(--gradient-accent);
}

.avatar-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--gradient-accent);
    filter: blur(20px);
    opacity: 0.4;
    z-index: -1;
    animation: pulse 4s infinite alternate;
}

.avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 5px solid var(--bg-primary);
}

@keyframes pulse {
    0% {
        transform: scale(0.98);
        opacity: 0.3;
    }
    100% {
        transform: scale(1.04);
        opacity: 0.6;
    }
}

/* Scroll Down Mouse Widget */
.scroll-down-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    z-index: 2;
}

.mouse-icon {
    width: 26px;
    height: 42px;
    border: 2px solid var(--text-secondary);
    border-radius: 15px;
    position: relative;
}

.mouse-icon .wheel {
    width: 4px;
    height: 8px;
    background-color: var(--accent-color-2);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel 1.5s infinite;
}

.scroll-text {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-secondary);
}

@keyframes scroll-wheel {
    0% {
        top: 6px;
        opacity: 1;
    }
    100% {
        top: 22px;
        opacity: 0;
    }
}

/* ==========================================================================
   ABOUT ME SECTION
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.about-info h3 {
    font-size: 1.75rem;
    margin-bottom: 20px;
    line-height: 1.3;
}

.about-text {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.personal-details-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.detail-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    font-weight: 600;
}

.detail-value {
    font-weight: 500;
    color: var(--text-primary);
}

/* Stats Cards Grid */
.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.stat-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    box-shadow: var(--glass-shadow);
    padding: 30px 20px;
    border-radius: 16px;
    text-align: center;
    transition: var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color-1);
    box-shadow: 0 10px 20px rgba(139, 92, 246, 0.1);
}

.stat-icon-wrapper {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    color: var(--accent-color-2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin: 0 auto 15px;
    border: 1px solid var(--border-color);
}

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* ==========================================================================
   SKILLS SECTION
   ========================================================================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.skills-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 20px;
    padding: 35px 30px;
    transition: var(--transition-normal);
}

.skills-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color-2);
    box-shadow: 0 10px 20px rgba(6, 182, 212, 0.1);
}

.skills-card-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.header-icon {
    font-size: 1.5rem;
    color: var(--accent-color-2);
}

.skills-card-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.skills-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    font-weight: 500;
}

.skill-name {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
}

.skill-icon {
    font-size: 1.1rem;
}

/* Tech Icon Colors */
.html-color { color: var(--html-color); }
.css-color { color: var(--css-color); }
.js-color { color: var(--js-color); }
.react-color { color: var(--react-color); }
.node-color { color: var(--node-color); }
.sql-color { color: var(--sql-color); }
.py-color { color: var(--py-color); }
.api-color { color: var(--api-color); }
.git-color { color: var(--git-color); }
.docker-color { color: var(--docker-color); }
.aws-color { color: var(--aws-color); }
.figma-color { color: var(--figma-color); }

.skill-percentage {
    color: var(--accent-color-2);
}

.skill-bar-wrapper {
    height: 6px;
    background-color: var(--bg-tertiary);
    border-radius: 3px;
    width: 100%;
    overflow: hidden;
}

.skill-bar {
    height: 100%;
    background: var(--gradient-accent);
    border-radius: 3px;
    width: 0%; /* Dynamic fill via IntersectionObserver/JS */
    transition: width 1.5s cubic-bezier(0.1, 1, 0.1, 1);
}

/* ==========================================================================
   PROJECTS SECTION
   ========================================================================== */
.project-filters {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
}

.filter-btn {
    padding: 10px 22px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    transition: var(--transition-normal);
}

.filter-btn:hover, .filter-btn.active {
    background: var(--gradient-accent);
    color: #ffffff;
    border-color: transparent;
    box-shadow: var(--shadow-accent);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.project-card {
    background: var(--glass-bg);
    border: var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 20px;
    overflow: hidden;
    transition: transform var(--transition-normal), border var(--transition-normal), box-shadow var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-color-1);
    box-shadow: 0 15px 30px rgba(139, 92, 246, 0.15);
}

.project-img-wrapper {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-img {
    transform: scale(1.08);
}

/* Overlay visible on hover */
.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 13, 22, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

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

.project-overlay-links {
    display: flex;
    gap: 15px;
}

.overlay-link {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--text-primary);
    color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transform: translateY(20px);
    transition: transform var(--transition-normal), background-color var(--transition-fast);
}

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

.project-card:hover .overlay-link:nth-child(2) {
    transition-delay: 0.1s;
}

.overlay-link:hover {
    background: var(--accent-color-2);
    color: #ffffff;
}

.project-details {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-category {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent-color-2);
    margin-bottom: 10px;
}

.project-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.project-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    flex-grow: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.project-tags span {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 12px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

/* ==========================================================================
   EXPERIENCE TIMELINE SECTION
   ========================================================================== */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 30px 0;
}

/* Main vertical line */
.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 40px;
    height: 100%;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-left: 80px;
    margin-bottom: 50px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

/* Dot design */
.timeline-dot {
    position: absolute;
    left: 20px;
    top: 0;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--gradient-accent);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    box-shadow: var(--shadow-accent);
    z-index: 2;
}

.timeline-dot-end {
    position: absolute;
    left: 20px;
    bottom: -50px;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    z-index: 2;
}

.timeline-date {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--accent-color-2);
    margin-bottom: 8px;
}

.timeline-content {
    background: var(--glass-bg);
    border: var(--glass-border);
    box-shadow: var(--glass-shadow);
    padding: 30px;
    border-radius: 16px;
    transition: var(--transition-normal);
}

.timeline-content:hover {
    border-color: var(--accent-color-1);
    transform: translateX(5px);
}

.timeline-content h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
}

.timeline-content .company {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.timeline-content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 50px;
    align-items: stretch;
}

/* Info Side Panel */
.contact-info-panel {
    background: var(--glass-bg);
    border: var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 20px;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.contact-info-panel h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.contact-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-bottom: 40px;
}

.contact-card-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--bg-tertiary);
    color: var(--accent-color-2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    border: 1px solid var(--border-color);
}

.contact-card-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.contact-card-text span {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.contact-card-text a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
}

.contact-card-text a:hover {
    color: var(--accent-color-2);
}

/* Social links styling */
.social-links {
    display: flex;
    gap: 12px;
}

.social-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.social-btn:hover {
    background: var(--gradient-accent);
    color: #ffffff;
    border-color: transparent;
    transform: translateY(-3px);
    box-shadow: var(--shadow-accent);
}

/* Contact Form Panel */
.contact-form-panel {
    background: var(--glass-bg);
    border: var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 20px;
    padding: 40px;
    position: relative;
    overflow: hidden;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 25px;
}

.form-group label {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px 18px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    transition: border var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--accent-color-2);
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.15);
}

/* Error feedback state */
.error-msg {
    font-size: 0.75rem;
    color: #ef4444;
    font-weight: 500;
    display: none;
}

.form-group.error input, .form-group.error textarea {
    border-color: #ef4444;
}

.form-group.error .error-msg {
    display: block;
}

.form-submit {
    width: 100%;
    border-radius: 10px;
}

/* Success panel animation state */
.form-success {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-secondary);
    backdrop-filter: var(--glass-blur);
    padding: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    transform: translateY(100%);
    transition: transform var(--transition-slow);
    z-index: 5;
}

.form-success.active {
    transform: translateY(0);
}

.success-icon-wrapper {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    border: 2px solid rgba(34, 197, 94, 0.2);
}

.form-success h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.form-success p {
    color: var(--text-secondary);
    margin-bottom: 30px;
    max-width: 320px;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
    background: #060910;
    border-top: 1px solid var(--border-color);
    padding: 40px 0;
    margin-top: 80px;
}

[data-theme="light"] .footer {
    background: #ffffff;
}

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

.footer-copy {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    color: var(--text-muted);
}

.footer-links a:hover {
    color: var(--accent-color-1);
}

/* ==========================================================================
   BACK TO TOP BUTTON
   ========================================================================== */
.back-to-top {
    position: fixed;
    bottom: -50px;
    right: 30px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--gradient-accent);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-accent);
    z-index: 99;
    opacity: 0;
    pointer-events: none;
    transition: bottom var(--transition-normal), opacity var(--transition-normal), transform var(--transition-fast);
}

.back-to-top.active {
    bottom: 30px;
    opacity: 1;
    pointer-events: auto;
}

.back-to-top:hover {
    transform: translateY(-5px);
}

/* ==========================================================================
   SCROLL REVEAL ANIMATIONS
   ========================================================================== */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-on-scroll.active {
    opacity: 1;
    transform: translateY(0);
}

/* Animate Hero items sequentially on load */
.animate-on-load {
    opacity: 0;
    transform: translateY(20px);
    animation: fade-in-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-content .animate-on-load:nth-child(1) { animation-delay: 0.1s; }
.hero-content .animate-on-load:nth-child(2) { animation-delay: 0.2s; }
.hero-content .animate-on-load:nth-child(3) { animation-delay: 0.3s; }
.hero-content .animate-on-load:nth-child(4) { animation-delay: 0.4s; }
.hero-content .animate-on-load:nth-child(5) { animation-delay: 0.5s; }
.hero-visual.animate-on-load { animation-delay: 0.6s; }

@keyframes fade-in-up {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   MEDIA QUERIES (RESPONSIVENESS)
   ========================================================================== */

/* Laptop screen size adjustments */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px 0;
    }
    .hero-title {
        font-size: 3rem;
    }
    .hero-typing {
        font-size: 1.8rem;
    }
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Tablets (landscape and portrait) */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--bg-primary);
        border-top: 1px solid var(--border-color);
        padding: 50px 30px;
        transition: left var(--transition-slow);
        overflow-y: auto;
    }

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

    .nav-list {
        flex-direction: column;
        gap: 35px;
        align-items: center;
    }

    .nav-link {
        font-size: 1.3rem;
    }

    .mobile-toggle {
        display: flex;
    }

    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-desc {
        margin: 0 auto 30px;
    }

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

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-stats {
        margin-top: 20px;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .timeline::before {
        left: 20px;
    }
    .timeline-item {
        padding-left: 50px;
    }
    .timeline-dot {
        left: 0px;
    }
    .timeline-dot-end {
        left: 0px;
    }
}

/* Mobile Screens */
@media (max-width: 480px) {
    .hero-title {
        font-size: 2.4rem;
    }
    .hero-typing {
        font-size: 1.4rem;
        height: 35px;
    }
    .hero-actions {
        flex-direction: column;
        gap: 15px;
        width: 100%;
    }
    .hero-actions .btn {
        width: 100%;
    }
    .personal-details-grid {
        grid-template-columns: 1fr;
    }
    .about-stats {
        grid-template-columns: 1fr;
    }
    .skills-grid {
        grid-template-columns: 1fr;
    }
    .form-grid {
        grid-template-columns: 1fr;
    }
    .footer-container {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}