/* ========================================
   CV Style - Modern, Clean, Professional
   ======================================== */

/* CSS Custom Properties (Variables) */
:root {
    /* Colors - Light Theme */
    --color-bg: #fafafa;
    --color-bg-card: #ffffff;
    --color-bg-sidebar: #1a1a2e;
    --color-text-primary: #1a1a2e;
    --color-text-secondary: #4a4a6a;
    --color-text-muted: #6b6b8a;
    --color-text-light: #ffffff;
    --color-text-sidebar: #e8e8f0;
    --color-text-sidebar-muted: #a0a0b8;
    --color-accent: #2563eb;
    --color-accent-hover: #1d4ed8;
    --color-accent-light: #dbeafe;
    --color-border: #e2e2eb;
    --color-border-sidebar: #2d2d4a;
    --color-shadow: rgba(26, 26, 46, 0.08);
    --color-shadow-hover: rgba(26, 26, 46, 0.15);
    --color-focus: #2563eb;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    /* Layout */
    --sidebar-width: 300px;
    --header-height: auto;
    --max-width: 900px;
}

/* Dark Theme */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #0f0f1a;
        --color-bg-card: #161628;
        --color-bg-sidebar: #0d0d1a;
        --color-text-primary: #f0f0f8;
        --color-text-secondary: #b8b8d0;
        --color-text-muted: #8888a8;
        --color-text-light: #ffffff;
        --color-text-sidebar: #e8e8f0;
        --color-text-sidebar-muted: #8888a8;
        --color-accent: #3b82f6;
        --color-accent-hover: #60a5fa;
        --color-accent-light: #1e3a5f;
        --color-border: #2d2d4a;
        --color-border-sidebar: #1e1e3a;
        --color-shadow: rgba(0, 0, 0, 0.3);
        --color-shadow-hover: rgba(0, 0, 0, 0.5);
        --color-focus: #3b82f6;
    }
}

/* Print Styles - Override for PDF generation */
@media print {
    :root {
        --color-bg: #ffffff;
        --color-bg-card: #ffffff;
        --color-bg-sidebar: #1a1a2e;
        --color-text-primary: #1a1a2e;
        --color-text-secondary: #4a4a6a;
        --color-text-muted: #6b6b8a;
        --color-border: #e2e2eb;
        --color-shadow: none;
        --color-shadow-hover: none;
    }

    .print-btn {
        display: none !important;
    }

    .cv-container {
        display: grid !important;
        grid-template-columns: var(--sidebar-width) 1fr !important;
        min-height: auto !important;
        box-shadow: none !important;
        margin: 0 !important;
        page-break-inside: avoid;
    }

    .sidebar {
        background: var(--color-bg-sidebar) !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    .main-content {
        padding: var(--space-6) var(--space-8) !important;
    }

    .section {
        break-inside: avoid;
        page-break-inside: avoid;
    }

    .experience-item,
    .project-card,
    .education-item {
        break-inside: avoid;
        page-break-inside: avoid;
    }

    a {
        color: var(--color-text-primary) !important;
        text-decoration: none !important;
    }

    .contact-item a {
        color: var(--color-text-sidebar) !important;
    }
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    min-height: 100vh;
    padding: var(--space-6);
}

/* ========================================
   Layout
   ======================================== */
.cv-container {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    max-width: var(--max-width);
    margin: 0 auto;
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 24px var(--color-shadow), 0 1px 4px var(--color-shadow);
    overflow: hidden;
    min-height: calc(100vh - 3rem);
}

/* Sidebar */
.sidebar {
    background: var(--color-bg-sidebar);
    color: var(--color-text-sidebar);
    padding: var(--space-8) var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
    position: relative;
}

.sidebar::after {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--color-accent), #7c3aed, #ec4899);
    opacity: 0.8;
}

/* Main Content */
.main-content {
    padding: var(--space-8) var(--space-10);
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: var(--line-height-tight);
    color: inherit;
}

.section-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-accent);
    padding-bottom: var(--space-2);
    border-bottom: 2px solid var(--color-accent);
    margin-bottom: var(--space-6);
    position: relative;
}

.sidebar .section-title {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

.main-content .section-title {
    color: var(--color-text-primary);
    border-bottom-color: var(--color-border);
}

.main-content .section-title::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--color-accent);
}

.name {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: var(--space-1);
    line-height: var(--line-height-tight);
}

.title {
    font-size: var(--font-size-base);
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: var(--space-6);
}

.job-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-1);
}

.company {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    font-weight: 400;
}

.degree {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-1);
}

.school {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    font-weight: 400;
}

.cert-item h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-1);
}

.cert-item p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.summary {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
}

/* ========================================
   Profile Section
   ======================================== */
.profile-section {
    text-align: center;
}

.avatar-placeholder {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent), #7c3aed);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-5);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
    color: white;
    border: 3px solid var(--color-bg-sidebar);
}

.avatar-placeholder svg {
    width: 50px;
    height: 50px;
}

/* ========================================
   Contact Info
   ======================================== */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    text-align: left;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-text-sidebar);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: color var(--transition-fast);
    padding: var(--space-2) 0;
}

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

.contact-item .icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    color: var(--color-text-sidebar-muted);
    transition: color var(--transition-fast);
}

.contact-item:hover .icon {
    color: var(--color-accent);
}

.contact-item a {
    color: inherit;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    width: 100%;
}

/* ========================================
   Skills
   ======================================== */
.skills {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.skill-category h3 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-sidebar-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-3);
}

.skill-category ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.skill-category li {
    font-size: var(--font-size-sm);
    color: var(--color-text-sidebar);
    padding-left: var(--space-3);
    position: relative;
}

.skill-category li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-size: var(--font-size-xs);
}

/* ========================================
   Languages
   ======================================== */
.languages {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.language-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

.language-item span:first-child {
    font-size: var(--font-size-sm);
    color: var(--color-text-sidebar);
    font-weight: 500;
}

.proficiency {
    display: flex;
    gap: 2px;
}

.proficiency .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-border-sidebar);
    transition: background var(--transition-fast);
}

.proficiency .dot.filled {
    background: var(--color-accent);
    box-shadow: 0 0 8px var(--color-accent);
}

/* ========================================
   Interests
   ======================================== */
.interests {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.interests li {
    font-size: var(--font-size-sm);
    color: var(--color-text-sidebar);
    padding-left: var(--space-3);
    position: relative;
}

.interests li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-size: var(--font-size-base);
    line-height: 1;
}

/* ========================================
   Experience
   ======================================== */
.experience-item {
    padding-bottom: var(--space-8);
    border-bottom: 1px solid var(--color-border);
}

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

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
}

.job-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--space-1);
    text-align: right;
    white-space: nowrap;
}

.date, .location {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.location {
    color: var(--color-text-secondary);
}

.achievements {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.achievements li {
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
    padding-left: var(--space-5);
    position: relative;
}

.achievements li::before {
    content: '✦';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-size: var(--font-size-xs);
    top: 0.125rem;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.tech-stack span {
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--color-accent);
    background: var(--color-accent-light);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    white-space: nowrap;
}

/* ========================================
   Projects
   ======================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
}

.project-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px var(--color-shadow-hover);
    border-color: var(--color-accent);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-3);
}

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

.project-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    text-decoration: none;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.project-link:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

.project-link svg {
    width: 16px;
    height: 16px;
}

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

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

.project-tech span {
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
}

/* ========================================
   Education
   ======================================== */
.education-item {
    padding-bottom: var(--space-6);
    border-bottom: 1px solid var(--color-border);
}

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

.education-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-4);
    margin-bottom: var(--space-3);
    flex-wrap: wrap;
}

.education-header .date {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    white-space: nowrap;
}

.education-details {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-3);
}

.education-item .achievements {
    margin-bottom: 0;
}

/* ========================================
   Certifications
   ======================================== */
.certifications {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-4);
}

.cert-item {
    padding: var(--space-4);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.cert-item:hover {
    border-color: var(--color-accent);
    box-shadow: 0 4px 16px var(--color-shadow);
}

/* ========================================
   Print Button
   ======================================== */
.print-btn {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
    transition: all var(--transition-fast);
    z-index: 100;
}

.print-btn:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
}

.print-btn:focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 3px;
}

.print-btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 900px) {
    :root {
        --sidebar-width: 280px;
    }

    body {
        padding: var(--space-4);
    }

    .cv-container {
        grid-template-columns: 1fr;
        min-height: auto;
        border-radius: var(--radius-lg);
    }

    .sidebar {
        padding: var(--space-6) var(--space-5);
    }

    .sidebar::after {
        display: none;
    }

    .main-content {
        padding: var(--space-6) var(--space-6);
    }

    .experience-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .job-meta {
        align-items: flex-start;
        text-align: left;
        flex-direction: row;
        flex-wrap: wrap;
        gap: var(--space-4);
    }

    .education-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .print-btn {
        bottom: var(--space-4);
        right: var(--space-4);
        padding: var(--space-2) var(--space-4);
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 600px) {
    :root {
        --font-size-2xl: 1.5rem;
        --font-size-lg: 1rem;
        --space-8: 1.5rem;
        --space-6: 1rem;
    }

    body {
        padding: var(--space-3);
    }

    .main-content {
        padding: var(--space-5);
        gap: var(--space-6);
    }

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

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

    .tech-stack span,
    .project-tech span {
        font-size: 0.7rem;
        padding: 0.25rem 0.5rem;
    }
}

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

:focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Skip link for keyboard navigation */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-2) var(--space-4);
    background: var(--color-accent);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    z-index: 1000;
    font-weight: 500;
}

.skip-link:focus {
    top: var(--space-4);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-border: currentColor;
        --color-border-sidebar: currentColor;
        --color-accent-light: var(--color-accent);
    }

    .tech-stack span,
    .project-tech span {
        border-width: 2px;
    }

    .project-card,
    .cert-item {
        border-width: 2px;
    }
}

/* ========================================
   Utility Classes
   ======================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}