/* =====================
   CSS Variables for Theming (Material 3 Inspired)
   ===================== */
:root {
    /* Light Mode Colors - Material 3 Palette */
    --bg-primary: #fefbff;
    --bg-secondary: #f5f5f9;
    --bg-tertiary: #ececf1;
    --text-primary: #1c1b1f;
    --text-secondary: #49454f;
    --text-tertiary: #79747e;
    --accent-primary: #6750a4;
    --accent-secondary: #7f67be;
    --accent-gradient: linear-gradient(135deg, #6750a4 0%, #7f67be 100%);
    --border-color: #e7e0ec;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1), 0 4px 8px rgba(0, 0, 0, 0.08);
    --card-bg: #ffffff;
    --code-bg: #f5f5f9;
    --nav-bg: rgba(254, 251, 255, 0.95);
    --success-color: #006e1c;
    --error-color: #ba1a1a;
}

[data-theme="dark"] {
    /* Dark Mode Colors - Material 3 Dark Palette */
    --bg-primary: #1c1b1f;
    --bg-secondary: #2b2930;
    --bg-tertiary: #36343b;
    --text-primary: #e6e1e5;
    --text-secondary: #cac4d0;
    --text-tertiary: #938f99;
    --accent-primary: #d0bcff;
    --accent-secondary: #ccc2dc;
    --accent-gradient: linear-gradient(135deg, #d0bcff 0%, #ccc2dc 100%);
    --border-color: #49454f;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.5), 0 2px 4px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.6), 0 4px 8px rgba(0, 0, 0, 0.5);
    --card-bg: #2b2930;
    --code-bg: #36343b;
    --nav-bg: rgba(28, 27, 31, 0.95);
    --success-color: #6fdd8b;
    --error-color: #ffb4ab;
}

/* =====================
   Reset & Base Styles
   ===================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

/* =====================
   Typography
   ===================== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

/* =====================
   Container & Layout
   ===================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

section {
    padding: 100px 0;
}

/* =====================
   Theme Toggle Button
   ===================== */
.theme-toggle {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 1000;
    width: 56px;
    height: 56px;
    border: none;
    border-radius: 16px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.theme-toggle .sun-icon {
    display: none;
    color: var(--accent-primary);
}

.theme-toggle .moon-icon {
    display: block;
    color: var(--accent-primary);
}

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

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

/* =====================
   Navigation
   ===================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-brand {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-image {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

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

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: width 0.3s ease;
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* =====================
   Hero Section
   ===================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
    position: relative;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.hero-greeting {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 24px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
}

.inline-logo {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    vertical-align: middle;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.7;
    max-width: 600px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    padding: 14px 32px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-transform: none;
    letter-spacing: 0.5px;
}

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

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

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background: transparent;
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
}

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

.btn-block {
    width: 100%;
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.profile-image-container {
    position: relative;
    width: 400px;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 6px solid var(--card-bg);
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 2;
    animation: float 3s ease-in-out infinite;
}

.profile-glow {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--accent-gradient);
    filter: blur(40px);
    opacity: 0.3;
    z-index: 1;
    animation: pulse 2s ease-in-out infinite alternate;
}

@keyframes pulse {
    0% {
        transform: scale(0.95);
        opacity: 0.3;
    }

    100% {
        transform: scale(1.05);
        opacity: 0.5;
    }
}

.floating-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 32px;
    box-shadow: var(--shadow-lg);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-20px);
    }
}

.code-line {
    font-family: 'Courier New', monospace;
    font-size: 1rem;
    margin: 8px 0;
    color: var(--text-primary);
    white-space: nowrap;
}

.code-indent {
    padding-left: 24px;
}

.code-keyword {
    color: #c678dd;
}

.code-class {
    color: #e5c07b;
}

.code-var {
    color: #61afef;
}

.code-string {
    color: #98c379;
}

.code-number {
    color: #d19a66;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-tertiary);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--text-tertiary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s ease-in-out infinite;
}

@keyframes scroll {

    0%,
    100% {
        top: 8px;
        opacity: 1;
    }

    50% {
        top: 20px;
        opacity: 0.5;
    }
}

/* =====================
   Section Title
   ===================== */
.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 60px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

.subsection-title {
    font-size: 1.875rem;
    margin: 60px 0 40px;
    color: var(--text-primary);
}

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

.about-text {
    max-width: 900px;
    margin: 0 auto;
}

.about-intro {
    font-size: 1.25rem;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.about-text p {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-top: 48px;
}

.code-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: left;
}

.code-visual:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-primary);
}

.code-visual .floating-card {
    padding: 0;
    border: none;
    box-shadow: none;
    background: transparent;
    animation: none;
}

.highlight-item {
    text-align: center;
    padding: 24px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.highlight-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-primary);
}

.highlight-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.highlight-label {
    display: block;
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

/* =====================
   Skills Section
   ===================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.skill-category {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 32px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-category:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-primary);
}

.category-title {
    font-size: 1.25rem;
    margin-bottom: 24px;
    color: var(--accent-primary);
}

.skill-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

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

.skill-name {
    font-size: 0.9375rem;
    color: var(--text-primary);
    font-weight: 500;
}

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

.skill-progress {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 3px;
    transition: width 1s ease-out;
}

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

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
}

.education-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 32px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.education-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-primary);
}

.education-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
    flex-wrap: wrap;
    gap: 12px;
}

.education-degree {
    font-size: 1.25rem;
    color: var(--text-primary);
    font-weight: 600;
}

.education-date {
    padding: 6px 16px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: 100px;
    font-size: 0.8125rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.education-institution {
    font-size: 1.0625rem;
    color: var(--accent-primary);
    margin-bottom: 8px;
    font-weight: 600;
}

.education-location {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

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

.featured-projects {
    display: grid;
    gap: 32px;
    margin-bottom: 60px;
}

.project-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 40px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

.project-badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--accent-gradient);
    color: white;
    border-radius: 100px;
    font-size: 0.8125rem;
    font-weight: 600;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
}

.project-header {
    margin-bottom: 16px;
}

.project-title {
    font-size: 1.75rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

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

.tag {
    padding: 6px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-size: 0.8125rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.project-description {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.project-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: 16px;
}

.highlight {
    text-align: center;
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.highlight strong {
    display: block;
    font-size: 1.25rem;
    color: var(--accent-primary);
    margin-bottom: 4px;
}

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

.project-tech span {
    padding: 8px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-size: 0.8125rem;
    color: var(--text-primary);
    font-weight: 500;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
    padding: 10px 20px;
    background: var(--accent-gradient);
    color: white;
    border-radius: 100px;
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
}

.project-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.project-link svg {
    flex-shrink: 0;
}

/* Other Projects */
.other-projects-section {
    margin-top: 60px;
}

.tech-category {
    margin-bottom: 48px;
}

.tech-category-title {
    font-size: 1.375rem;
    margin-bottom: 24px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 12px;
}

.combined-category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.combined-category-header .tech-category-title {
    margin-bottom: 0;
}

.category-icon {
    font-size: 1.5rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.project-card-small {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-card-small:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-primary);
}

.project-card-small h4 {
    font-size: 1.125rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.project-card-small p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

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

.small-tags span {
    padding: 6px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* =====================
   Experience Section
   ===================== */
.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-left: 48px;
    padding-bottom: 48px;
}

.timeline-marker {
    position: absolute;
    left: -6px;
    top: 0;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent-primary);
    border: 3px solid var(--bg-primary);
}

.timeline-content {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 32px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline-content:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--accent-primary);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 8px;
    flex-wrap: wrap;
    gap: 12px;
}

.timeline-title {
    font-size: 1.375rem;
    color: var(--text-primary);
}

.timeline-date {
    padding: 6px 16px;
    background: var(--accent-gradient);
    color: white;
    border-radius: 100px;
    font-size: 0.8125rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.timeline-company {
    font-size: 1.0625rem;
    color: var(--accent-primary);
    margin-bottom: 20px;
    font-weight: 600;
}

.timeline-description {
    list-style: none;
    margin-bottom: 20px;
}

.timeline-description li {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
    padding-left: 20px;
    position: relative;
}

.timeline-description li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
}

.timeline-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.timeline-tech span {
    padding: 8px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-size: 0.8125rem;
    color: var(--text-primary);
    font-weight: 500;
}

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

.achievement-category {
    margin-bottom: 60px;
}

.achievement-category:last-child {
    margin-bottom: 0;
}

.achievement-category-title {
    font-size: 1.625rem;
    margin-bottom: 32px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 12px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--border-color);
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.certificate-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 28px 20px;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.certificate-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

.certificate-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
    /* filter: grayscale(100%);
    transition: filter 0.3s ease; */
}

/* .certificate-card:hover .certificate-icon {
    filter: grayscale(0%);
} */

.certificate-title {
    font-size: 1.0625rem;
    margin-bottom: 10px;
    color: var(--text-primary);
    font-weight: 600;
    line-height: 1.4;
}

.certificate-issuer {
    font-size: 0.9375rem;
    color: var(--accent-primary);
    margin-bottom: 6px;
    font-weight: 500;
}

.certificate-description {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-top: 8px;
    font-style: italic;
}

.certificate-date {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    font-weight: 500;
    margin-top: 8px;
}

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-icon {
    color: var(--accent-primary);
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 1rem;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.contact-item p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.contact-item p+p {
    margin-top: 4px;
}

.contact-form-container {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 40px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group input,
.form-group textarea {
    padding: 16px 20px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px rgba(103, 80, 164, 0.1);
    background: var(--card-bg);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* =====================
   Footer
   ===================== */
.footer {
    padding: 40px 0;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-text {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--accent-gradient);
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
}

/* =====================
   Responsive Design
   ===================== */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-visual {
        order: -1;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .certificates-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    section {
        padding: 60px 0;
    }

    .profile-image-container {
        width: 280px;
        height: 280px;
    }

    .about-highlights {
        grid-template-columns: repeat(2, 1fr);
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--nav-bg);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all 0.3s ease;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-subtitle {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .subsection-title {
        font-size: 1.5rem;
    }

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

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

    .education-grid {
        grid-template-columns: 1fr;
    }
    
    .certificates-grid {
        grid-template-columns: 1fr;
    }
    
    .achievement-category-title {
        font-size: 1.375rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .profile-image-container {
        width: 220px;
        height: 220px;
    }

    .inline-logo {
        width: 28px;
        height: 28px;
    }

    .hero-subtitle {
        font-size: 1.5rem;
    }

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

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .about-highlights {
        grid-template-columns: 1fr;
    }

    .project-card {
        padding: 24px;
    }
}

/* =====================
   Animations & Transitions
   ===================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* Smooth transitions for all interactive elements */
button,
a,
input,
textarea,
select {
    transition: all 0.3s ease;
}

/* Focus visible for accessibility */
*:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}






/* Certificate Inline View - WITH CLOSE BUTTON */

/* Certificates Section - Flex Layout */
.certificates-grid-container {
    display: flex;
    gap: 30px;
    align-items: flex-start;
}

/* Left Side - Certificate List */
.certificates-list {
    flex: 0 0 40%;
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

/* Right Side - Certificate Detail View */
.certificate-detail-view {
    flex: 1;
    display: none;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
    position: sticky;
    top: 100px;
    position: relative; /* For close button positioning */
}

.certificate-detail-view.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

/* Close Button */
.detail-close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 36px;
    height: 36px;
    border: none;
    background: var(--bg-secondary);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: all 0.3s ease;
    z-index: 10;
}

.detail-close-btn:hover {
    background: var(--accent-primary);
    color: white;
    transform: rotate(90deg);
}

.detail-close-btn svg {
    width: 20px;
    height: 20px;
}

.certificate-detail-view .detail-header {
    margin-bottom: 30px;
    padding-right: 40px; /* Space for close button */
}

.certificate-detail-view .detail-header h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-weight: 600;
}

.certificate-detail-view .detail-header p {
    font-size: 1rem;
    color: var(--accent-primary);
    font-weight: 500;
}

.certificate-detail-view .detail-image {
    width: 100%;
}

.certificate-detail-view .detail-image img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

/* Certificate Cards - Clickable */
.certificate-card {
    cursor: pointer;
    transition: all 0.3s ease;
}

.certificate-card.selected {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-lg);
    background: var(--bg-secondary);
}

.certificate-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
}

/* When no certificate selected - normal 3 column grid */
.certificates-grid-container.normal-view {
    display: block;
}

.certificates-grid-container.normal-view .certificates-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.certificates-grid-container.normal-view .certificate-detail-view {
    display: none;
}

/* Responsive */
@media (max-width: 1200px) {
    .certificates-list {
        flex: 0 0 45%;
    }
}

@media (max-width: 968px) {
    .certificates-grid-container {
        flex-direction: column;
    }
    
    .certificates-list {
        flex: 1;
        grid-template-columns: repeat(2, 1fr);
    }
    
    .certificate-detail-view {
        position: relative;
        top: 0;
    }
}

@media (max-width: 768px) {
    .certificates-list {
        grid-template-columns: 1fr;
    }
    
    .certificate-detail-view {
        padding: 20px;
    }
    
    .certificate-detail-view .detail-header {
        padding-right: 30px;
    }
}