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

:root {
    --primary-color: #1a1a1a;
    --secondary-color: #2d2d2d;
    --accent-color: #64b5f6;
    --text-color: #ffffff;
    --text-light: #b0b0b0;
    --bg-color: #121212;
    --bg-light: #1e1e1e;
    --bg-card: #252525;
    --border-color: #404040;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 5px 20px rgba(0, 0, 0, 0.4);
    --transition: all 0.3s ease;
    --success-color: #4caf50;
    --warning-color: #ff9800;
    --error-color: #f44336;
    --download-color: #9c27b0;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(18, 18, 18, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo span {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: var(--transition);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--bg-color) 0%, var(--bg-light) 100%);
    padding-top: 80px;
    position: relative;
    z-index: 1;
}

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

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
    color: var(--text-color);
}

.highlight {
    color: var(--accent-color);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: inherit;
    font-size: 1rem;
}

.btn-primary {
    background: var(--accent-color);
    color: var(--bg-color);
}

.btn-primary:hover {
    background: #42a5f5;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(100, 181, 246, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text-color);
    border: 2px solid var(--text-color);
}

.btn-secondary:hover {
    background: var(--text-color);
    color: var(--bg-color);
    transform: translateY(-2px);
}

.btn-download {
    background: var(--download-color);
    color: var(--text-color);
    border: 2px solid var(--download-color);
}

.btn-download:hover {
    background: #7b1fa2;
    border-color: #7b1fa2;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(156, 39, 176, 0.3);
}

.hero-image {
    display: flex;
    justify-content: center;
}

.profile-image {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: var(--shadow-hover);
    border: 4px solid var(--accent-color);
    position: relative;
}

.profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: var(--transition);
}

.profile-image:hover img {
    transform: scale(1.05);
}

.profile-image::before {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border-radius: 50%;
    background: linear-gradient(45deg, var(--accent-color), #42a5f5, var(--accent-color));
    z-index: -1;
    animation: rotate 3s linear infinite;
}

@keyframes rotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* Legacy support for old image placeholder */
.image-placeholder {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--accent-color), #42a5f5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--bg-color);
    box-shadow: var(--shadow-hover);
}

/* Section Styles */
section {
    padding: 80px 0;
    position: relative;
    z-index: 2;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* Page Header Styles */
.page-header {
    min-height: 60vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--bg-color) 0%, var(--bg-light) 100%);
    padding-top: 80px;
    position: relative;
    z-index: 1;
}

.page-header-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.page-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-color);
    line-height: 1.2;
}

.page-subtitle {
    font-size: 1.3rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 1rem;
    margin-top: 2rem;
}

.breadcrumb a {
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: #42a5f5;
}

.breadcrumb-separator {
    color: var(--text-light);
}

.breadcrumb-current {
    color: var(--text-light);
}

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

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--text-light);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-light);
    font-weight: 500;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.skill-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
}

.skill-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--accent-color), #42a5f5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: var(--bg-color);
}

.skill-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.skill-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Experience Section */
.experience {
    background: var(--bg-color);
}

.experience-detail {
    background: var(--bg-light);
    padding: 100px 0;
}

.experience-timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.timeline-item {
    display: flex;
    margin-bottom: 4rem;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-date {
    flex: 0 0 200px;
    text-align: center;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    margin-top: 1rem;
}

.date-range {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.date-status {
    font-size: 0.9rem;
    padding: 4px 12px;
    border-radius: 20px;
    background: var(--bg-card);
    color: var(--text-light);
    border: 1px solid var(--border-color);
}

.date-status.current {
    background: var(--accent-color);
    color: var(--bg-color);
    font-weight: 500;
}

.date-duration {
    font-size: 0.9rem;
    color: var(--text-light);
    font-style: italic;
}

.timeline-content {
    flex: 1;
    margin: 0 2rem;
    background: var(--bg-card);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    display: flex;
    gap: 1.5rem;
    position: relative;
    z-index: 3;
}

.timeline-content:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
}

.company-logo {
    flex: 0 0 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-color), #42a5f5);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-color);
    font-size: 1.5rem;
}

.job-details {
    flex: 1;
}

.job-title {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.company-name {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.job-location {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.job-location i {
    margin-right: 0.5rem;
}

.job-type {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.type-badge {
    font-size: 0.8rem;
    padding: 4px 8px;
    border-radius: 12px;
    font-weight: 500;
}

.type-badge.full-time {
    background: rgba(76, 175, 80, 0.2);
    color: #4caf50;
    border: 1px solid rgba(76, 175, 80, 0.3);
}

.type-badge.permanent {
    background: rgba(100, 181, 246, 0.2);
    color: var(--accent-color);
    border: 1px solid rgba(100, 181, 246, 0.3);
}

.job-description p {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.job-description h5 {
    color: var(--text-color);
    font-size: 1rem;
    font-weight: 600;
    margin: 1.5rem 0 0.5rem 0;
}

.job-responsibilities,
.job-achievements {
    list-style: none;
    margin-bottom: 1.5rem;
}

.job-responsibilities li,
.job-achievements li {
    color: var(--text-light);
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.5rem;
    line-height: 1.5;
}

.job-responsibilities li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.job-achievements li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.job-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    background: rgba(100, 181, 246, 0.1);
    color: var(--accent-color);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(100, 181, 246, 0.3);
}

/* Career Highlights */
.career-highlights {
    background: var(--bg-color);
    padding: 100px 0;
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.highlight-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.highlight-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
}

.highlight-year {
    flex: 0 0 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-color), #42a5f5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-color);
    font-weight: 700;
    font-size: 1rem;
}

.highlight-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.highlight-content p {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Experience Summary Section */
.experience-summary-section {
    background: var(--bg-light);
    padding: 100px 0;
}

.experience-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.summary-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition);
}

.summary-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
}

.summary-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-color), #42a5f5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
    color: var(--bg-color);
}

.summary-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.summary-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
    display: block;
    margin-bottom: 0.5rem;
}

.summary-desc {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.4;
}

/* Call to Action Section */
.cta-section {
    background: var(--bg-color);
    padding: 100px 0;
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Portfolio Section */
.portfolio {
    background: var(--bg-light);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.portfolio-item {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
}

.portfolio-image {
    position: relative;
    overflow: hidden;
}

.portfolio-image img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: var(--transition);
    filter: brightness(0.8);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(100, 181, 246, 0.9);
    color: var(--bg-color);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-item:hover .portfolio-image img {
    transform: scale(1.1);
    filter: brightness(0.6);
}

.portfolio-overlay h4 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

/* Donation Section */
.donation {
    background: var(--bg-color);
}

.donation-detail {
    background: var(--bg-light);
    padding: 100px 0;
}

.donation-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.donation-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.donation-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.donation-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
}

.donation-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-color), #42a5f5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    color: var(--bg-color);
}

.donation-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.donation-card p {
    color: var(--text-light);
    line-height: 1.6;
}

.donation-list {
    list-style: none;
    padding: 0;
}

.donation-list li {
    color: var(--text-light);
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.5rem;
}

.donation-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.donation-methods {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.donation-methods-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-color);
    text-align: center;
}

.donation-options {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 3rem;
}

.donation-option {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.donation-option:hover {
    border-color: var(--accent-color);
    background: rgba(100, 181, 246, 0.05);
}

.donation-method-icon {
    width: 50px;
    height: 50px;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-color);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.donation-method-info h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.bank-details p {
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

.account-number {
    font-family: 'Courier New', monospace;
    background: var(--bg-color);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--accent-color);
}

.btn-copy {
    background: var(--accent-color);
    color: var(--bg-color);
    padding: 6px 12px;
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.btn-copy:hover {
    background: #42a5f5;
}

.btn-small {
    padding: 4px 8px;
    font-size: 0.8rem;
}

.ewallet-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.ewallet-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.5rem;
    background: var(--bg-color);
    border-radius: 6px;
}

.ewallet-name {
    font-weight: 500;
    color: var(--text-color);
    min-width: 60px;
}

.ewallet-number {
    font-family: 'Courier New', monospace;
    color: var(--accent-color);
    flex: 1;
}

/* Cryptocurrency Styles */
.crypto-description {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-style: italic;
}

.crypto-options {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.crypto-item {
    background: var(--bg-color);
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.crypto-item:hover {
    border-color: var(--accent-color);
    background: rgba(100, 181, 246, 0.05);
}

.crypto-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.crypto-icon-small {
    font-size: 1.2rem;
    color: var(--accent-color);
}

.crypto-name {
    font-weight: 600;
    color: var(--text-color);
    font-size: 1rem;
}

.crypto-address {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    padding: 0.5rem;
    background: var(--bg-light);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.address-text {
    font-family: 'Courier New', monospace;
    color: var(--accent-color);
    font-size: 0.85rem;
    flex: 1;
    word-break: break-all;
}

.qr-code-container {
    display: flex;
    justify-content: flex-start;
}

.crypto-warning {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 152, 0, 0.1);
    border: 1px solid rgba(255, 152, 0, 0.3);
    border-radius: 8px;
    margin-top: 1.5rem;
}

.warning-icon {
    color: var(--warning-color);
    font-size: 1.2rem;
    flex-shrink: 0;
    margin-top: 0.1rem;
}

.warning-text p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
}

.warning-text strong {
    color: var(--warning-color);
}

/* QR Code Modal */
.qr-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    backdrop-filter: blur(5px);
}

.qr-modal-content {
    background: var(--bg-card);
    border-radius: 12px;
    box-shadow: var(--shadow-hover);
    border: 1px solid var(--border-color);
    max-width: 400px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.qr-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.qr-modal-header h4 {
    color: var(--text-color);
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0;
}

.qr-modal-close {
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
}

.qr-modal-close:hover {
    background: var(--bg-light);
    color: var(--text-color);
}

.qr-modal-body {
    padding: 1.5rem;
}

.qr-code-display {
    text-align: center;
    margin-bottom: 1.5rem;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.qr-placeholder {
    text-align: center;
    color: var(--text-light);
}

.qr-placeholder i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.qr-address {
    text-align: center;
}

.qr-address p {
    font-family: 'Courier New', monospace;
    color: var(--accent-color);
    font-size: 0.9rem;
    word-break: break-all;
    margin-bottom: 1rem;
    padding: 0.5rem;
    background: var(--bg-light);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.donation-amounts {
    margin-bottom: 2rem;
}

.donation-amounts h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.amount-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.amount-btn {
    padding: 8px 16px;
    background: var(--bg-light);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.amount-btn:hover,
.amount-btn.active {
    background: var(--accent-color);
    color: var(--bg-color);
    border-color: var(--accent-color);
}

.custom-amount-input {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.custom-amount-input input {
    flex: 1;
    padding: 8px 12px;
    background: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

.donation-message {
    margin-top: 2rem;
}

.donation-message h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.message-box {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
    font-style: italic;
}

.message-box p {
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.message-signature {
    text-align: right;
    font-weight: 500;
    color: var(--accent-color) !important;
    margin-top: 1rem;
}

/* Donation Impact Section */
.donation-impact {
    background: var(--bg-color);
    padding: 100px 0;
}

.impact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.impact-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    text-align: center;
}

.impact-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
}

.impact-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--accent-color), #42a5f5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: var(--bg-color);
}

.impact-content h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.impact-content p {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.impact-stats {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.impact-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
}

.impact-label {
    font-size: 0.9rem;
    color: var(--text-light);
}

.donation-transparency {
    background: var(--bg-light);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.donation-transparency h3 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-color);
    text-align: center;
}

.transparency-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.transparency-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.transparency-item:hover {
    transform: translateY(-3px);
    border-color: var(--accent-color);
}

.transparency-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-color), #42a5f5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
    color: var(--bg-color);
}

.transparency-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.transparency-item p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Donation History Section */
.donation-history {
    background: var(--bg-light);
    padding: 100px 0;
}

.donation-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.stat-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-color), #42a5f5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
    color: var(--bg-color);
}

.stat-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
    display: block;
    margin-bottom: 0.5rem;
}

.stat-desc {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.4;
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1.5rem;
    color: var(--bg-color);
    font-size: 1.2rem;
}

.contact-details h4 {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.contact-details p {
    color: var(--text-light);
}

.contact-form {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--bg-color);
    color: var(--text-color);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(100, 181, 246, 0.1);
}

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

/* Footer */
.footer {
    background: var(--primary-color);
    color: var(--text-color);
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
}

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

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-card);
        width: 100%;
        text-align: center;
        transition: var(--transition);
        box-shadow: var(--shadow);
        padding: 2rem 0;
        border-top: 1px solid var(--border-color);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .page-title {
        font-size: 2.5rem;
    }
    
    .page-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-buttons,
    .cta-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .donation-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .donation-option {
        flex-direction: column;
        text-align: center;
    }
    
    .ewallet-item {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
    
    .crypto-address {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    
    .amount-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .transparency-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .profile-image,
    .image-placeholder {
        width: 250px;
        height: 250px;
        font-size: 3rem;
    }
    
    /* Experience Timeline Mobile */
    .timeline-item {
        flex-direction: column;
        margin-left: 60px;
    }
    
    .timeline-item:nth-child(even) {
        flex-direction: column;
    }
    
    .timeline-date {
        flex: none;
        text-align: left;
        padding: 0;
        margin-bottom: 1rem;
    }
    
    .timeline-content {
        margin: 0;
        flex-direction: column;
        text-align: left;
        z-index: 3;
    }
    
    .company-logo {
        align-self: flex-start;
        margin-bottom: 1rem;
    }
    
    .experience-summary {
        grid-template-columns: 1fr;
    }
    
    .highlights-grid {
        grid-template-columns: 1fr;
    }
    
    .highlight-card {
        flex-direction: column;
        text-align: center;
    }
    
    .highlight-year {
        align-self: center;
        margin-bottom: 1rem;
    }
    
    .impact-grid {
        grid-template-columns: 1fr;
    }
    
    .donation-stats {
        grid-template-columns: 1fr;
    }
    
    .crypto-options {
        gap: 1rem;
    }
    
    .crypto-item {
        padding: 0.75rem;
    }
    
    .crypto-warning {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
    
    .qr-modal-content {
        width: 95%;
        margin: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .hero-subtitle,
    .page-subtitle {
        font-size: 1rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .skill-card,
    .contact-form,
    .donation-methods {
        padding: 1.5rem;
    }
    
    .profile-image,
    .image-placeholder {
        width: 200px;
        height: 200px;
        font-size: 2.5rem;
    }
    
    .amount-buttons {
        grid-template-columns: 1fr;
    }
    
    .timeline-content {
        padding: 1.5rem;
    }
    
    .job-title {
        font-size: 1.2rem;
    }
    
    .company-name {
        font-size: 1rem;
    }
    
    .address-text {
        font-size: 0.75rem;
    }
    
    .crypto-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Animation classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* Scrollbar styling for dark theme */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

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

.dev-warning {
    color: #ff9800;
    padding: 8px;
    text-align: left;
}

@keyframes blink {
    0% { opacity: 1; }
    50% { opacity: 0.3; }
    100% { opacity: 1; }
}

.blink-warning {
    animation: blink 1s ease-in-out infinite;
    -webkit-animation: blink 1s ease-in-out infinite;
    -moz-animation: blink 1s ease-in-out infinite;
    -o-animation: blink 1s ease-in-out infinite;
    display: inline-block;
    will-change: opacity;
}