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

:root {
    /* Primary Colors */
    --primary-color: #2c3e50;
    --primary-dark: #1a252f;
    --primary-light: #34495e;

    /* Secondary Colors */
    --secondary-color: #3498db;
    --secondary-dark: #2980b9;
    --secondary-light: #5dade2;

    /* Accent Colors */
    --accent-color: #e74c3c;
    --accent-light: #ec7063;

    /* Neutral Colors */
    --white: #ffffff;
    --light-gray: #f5f7fa;
    --medium-gray: #e0e0e0;
    --dark-gray: #7f8c8d;
    --text-color: #333333;
    --text-light: #666666;

    /* Shadows */
    --shadow-sm: 0 2px 5px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 5px 15px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;

    /* Spacing */
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 15px;
    --spacing-lg: 20px;
    --spacing-xl: 30px;
    --spacing-2xl: 40px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-circle: 50%;

    /* Typography */
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-secondary: 'Arial', sans-serif;

    /* Layout */
    --sidebar-width: 350px;
    --header-height: 180px;
    --max-width: 1200px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--light-gray);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

/* ===== CV CONTAINER ===== */
.cv-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-xl);
    background-color: var(--white);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-lg);
}

/* ===== HEADER ===== */
.cv-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.cv-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.profile {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.avatar {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
    border-radius: var(--radius-circle);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 4px solid var(--white);
    box-shadow: var(--shadow-md);
}

.avatar i {
    font-size: 40px;
    color: var(--white);
}

.profile-info h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.profile-info .title {
    font-size: 16px;
    opacity: 0.9;
    font-weight: 300;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: right;
}

.contact-item {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    font-size: 14px;
}

.contact-item i {
    font-size: 16px;
    opacity: 0.8;
}

/* ===== MAIN LAYOUT ===== */
.cv-main {
    display: flex;
    gap: var(--spacing-xl);
}

.cv-sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
}

.cv-content {
    flex: 1;
}

/* ===== SECTIONS ===== */
.section {
    margin-bottom: var(--spacing-xl);
}

.section:last-child {
    margin-bottom: 0;
}

.section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--secondary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-title i {
    color: var(--secondary-color);
}

.section-content {
    padding-left: var(--spacing-md);
}

/* ===== SKILLS ===== */
.skill-category {
    margin-bottom: var(--spacing-lg);
}

.skill-category h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: var(--spacing-md);
}

.skill-item {
    margin-bottom: var(--spacing-md);
}

.skill-item span {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--text-color);
}

.skill-bar {
    height: 8px;
    background-color: var(--medium-gray);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--secondary-color), var(--secondary-light));
    border-radius: var(--radius-sm);
    transition: width 1s ease-in-out;
}

/* ===== EDUCATION ===== */
.education-item {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--medium-gray);
}

.education-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.education-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-xs);
}

.education-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-color);
}

.education-date {
    font-size: 12px;
    color: var(--dark-gray);
    font-style: italic;
}

.education-major {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: var(--spacing-xs);
}

.education-description {
    font-size: 13px;
    color: var(--text-light);
}

/* ===== CERTIFICATES ===== */
.certificate-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--medium-gray);
    font-size: 14px;
}

.certificate-item:last-child {
    border-bottom: none;
}

.certificate-item i {
    color: var(--accent-color);
    font-size: 16px;
}

/* ===== INTERESTS ===== */
.interests {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.interest-tag {
    background-color: var(--secondary-light);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===== EXPERIENCE ===== */
.experience-item {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-md);
    background-color: var(--light-gray);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--secondary-color);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.experience-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.experience-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
}

.experience-company {
    font-size: 14px;
    font-weight: 500;
    color: var(--secondary-color);
    margin-left: auto;
    margin-right: var(--spacing-lg);
}

.experience-date {
    font-size: 12px;
    color: var(--dark-gray);
    font-style: italic;
}

.experience-responsibilities {
    list-style: none;
    padding-left: 0;
}

.experience-responsibilities li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    font-size: 14px;
    color: var(--text-color);
}

.experience-responsibilities li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-size: 18px;
    font-weight: bold;
}

/* ===== PROJECTS ===== */
.project-item {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-md);
    background-color: var(--light-gray);
    border-radius: var(--radius-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.project-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.project-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-color);
}

.project-date {
    font-size: 12px;
    color: var(--dark-gray);
    font-style: italic;
}

.project-description {
    font-size: 14px;
    color: var(--text-color);
    margin-bottom: var(--spacing-md);
}

.project-technologies {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tech-tag {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
}

/* ===== FOOTER ===== */
.cv-footer {
    text-align: center;
    padding: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    border-top: 1px solid var(--medium-gray);
    font-size: 14px;
    color: var(--text-light);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .cv-container {
        padding: var(--spacing-lg);
    }

    .cv-main {
        flex-direction: column;
    }

    .cv-sidebar {
        width: 100%;
    }

    .cv-header {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-lg);
        padding: var(--spacing-lg);
    }

    .profile {
        flex-direction: column;
    }

    .contact-info {
        text-align: center;
    }

    .contact-item {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .cv-container {
        padding: var(--spacing-md);
    }

    .cv-header {
        padding: var(--spacing-md);
    }

    .avatar {
        width: 80px;
        height: 80px;
    }

    .avatar i {
        font-size: 30px;
    }

    .profile-info h1 {
        font-size: 22px;
    }

    .section-title {
        font-size: 16px;
    }

    .experience-header {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .experience-company {
        margin: 0;
    }
}

@media (max-width: 480px) {
    .cv-container {
        padding: var(--spacing-sm);
        border-radius: 0;
    }

    .cv-header {
        padding: var(--spacing-md);
    }

    .profile-info h1 {
        font-size: 20px;
    }

    .contact-item {
        font-size: 12px;
    }

    .section-content {
        padding-left: 0;
    }

    .experience-item,
    .project-item {
        padding: var(--spacing-sm);
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    body {
        background-color: white;
    }

    .cv-container {
        box-shadow: none;
        border: 1px solid #ccc;
    }

    .cv-header {
        background: var(--primary-color);
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    .no-print {
        display: none;
    }
}

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

.section {
    animation: fadeIn 0.5s ease forwards;
    opacity: 0;
}

.section:nth-child(1) { animation-delay: 0.1s; }
.section:nth-child(2) { animation-delay: 0.2s; }
.section:nth-child(3) { animation-delay: 0.3s; }
.section:nth-child(4) { animation-delay: 0.4s; }
.section:nth-child(5) { animation-delay: 0.5s; }
.section:nth-child(6) { animation-delay: 0.6s; }

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--light-gray);
}

::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-dark);
}