/* ========================================
   Mohd Waqar Azim Portfolio - Brittany Chiang Style
   ======================================== */

/* CSS Variables - Color Palette */
:root {
    --color-background: #0f172a;
    --color-text-primary: #94a3b8;
    --color-text-heading: #e2e8f0;
    --color-accent: #5eead4;
    --color-accent-hover: #2dd4bf;
    --color-badge-bg: rgba(45, 212, 191, 0.1);
    --color-card-hover: rgba(148, 163, 184, 0.05);
    --color-border: rgba(148, 163, 184, 0.1);
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 6rem;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background-color: var(--color-accent);
    color: var(--color-background);
}

/* Mouse Spotlight Effect */
.spotlight {
    pointer-events: none;
    position: fixed;
    inset: 0;
    z-index: 30;
    background: radial-gradient(
        600px at var(--mouse-x, 50%) var(--mouse-y, 50%),
        rgba(29, 78, 216, 0.15),
        transparent 80%
    );
    transition: background 0.3s ease;
}

/* Container - Split Layout */
.container {
    position: relative;
    display: flex;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
    min-height: 100vh;
}

/* ========================================
   LEFT SIDEBAR - Fixed
   ======================================== */
.sidebar {
    position: sticky;
    top: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 50%;
    max-height: 100vh;
    padding: 6rem 0;
}

.sidebar-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.header-main {
    margin-bottom: 4rem;
}

.name {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    line-height: 1.1;
    color: var(--color-text-heading);
}

.name a {
    text-decoration: none;
    color: inherit;
}

.name a:hover {
    color: var(--color-accent);
}

.role {
    font-size: 1.25rem;
    font-weight: 500;
    margin-top: 0.75rem;
    color: var(--color-text-heading);
}

.tagline {
    max-width: 300px;
    margin-top: 1rem;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--color-text-primary);
}

/* Navigation */
.nav {
    margin-bottom: auto;
}

.nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.25rem 0;
    text-decoration: none;
    color: var(--color-text-primary);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: all var(--transition-base);
}

.nav-indicator {
    display: inline-block;
    width: 2rem;
    height: 1px;
    background-color: var(--color-text-primary);
    transition: all var(--transition-base);
}

.nav-text {
    transition: color var(--transition-base);
}

.nav-link:hover .nav-indicator,
.nav-link.active .nav-indicator {
    width: 4rem;
    background-color: var(--color-text-heading);
}

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

.nav-link.active .nav-indicator {
    background-color: var(--color-text-heading);
}

.nav-link.active .nav-text {
    color: var(--color-text-heading);
}

/* Social Links */
.social-links {
    margin-top: auto;
    display: flex;
    gap: 1.25rem;
    list-style: none;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-primary);
    transition: color var(--transition-base);
}

.social-link:hover {
    color: var(--color-text-heading);
}

.social-icon {
    width: 1.5rem;
    height: 1.5rem;
}

/* ========================================
   MAIN CONTENT - Scrollable
   ======================================== */
.main-content {
    width: 50%;
    padding: 6rem 0 6rem 4rem;
}

.section {
    margin-bottom: 6rem;
    scroll-margin-top: 6rem;
}

.section:last-of-type {
    margin-bottom: 4rem;
}

/* Section Header - Sticky on Mobile */
.section-header-sticky {
    position: sticky;
    top: 0;
    z-index: 20;
    margin: -1rem -1rem 1.5rem -1rem;
    padding: 1rem;
    background-color: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: none;
}

.section-header {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-heading);
}

.section-content p {
    margin-bottom: 1rem;
}

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

/* Highlight Text */
.highlight {
    color: var(--color-text-heading);
}

/* Inline Links */
.inline-link {
    color: var(--color-text-heading);
    text-decoration: none;
    font-weight: 500;
    background-image: linear-gradient(transparent, transparent), 
                      linear-gradient(var(--color-accent), var(--color-accent));
    background-size: 100% 1px, 0% 1px;
    background-position: 100% 100%, 0 100%;
    background-repeat: no-repeat;
    transition: background-size var(--transition-base), color var(--transition-base);
}

.inline-link:hover {
    color: var(--color-accent);
    background-size: 0% 1px, 100% 1px;
}

/* ========================================
   EXPERIENCE SECTION
   ======================================== */
.experience-list {
    list-style: none;
}

.experience-item {
    margin-bottom: 3rem;
}

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

.experience-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1rem;
    padding: 1.5rem;
    margin: -1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-base);
}

.experience-card:hover {
    background-color: var(--color-card-hover);
    box-shadow: inset 0 1px 0 0 rgba(148, 163, 184, 0.1);
    transform: translateX(4px);
}

.experience-card:hover .experience-title {
    color: var(--color-accent);
}

.experience-card:hover .external-icon {
    transform: translate(2px, -2px);
}

.experience-date {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-primary);
    min-width: 120px;
    padding-top: 0.25rem;
}

.experience-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-heading);
    line-height: 1.3;
    margin-bottom: 0.5rem;
    transition: color var(--transition-base);
}

.company {
    font-weight: 600;
}

.location {
    font-weight: 400;
    color: var(--color-text-primary);
    font-size: 0.875rem;
}

.location::before {
    content: '· ';
}

.external-icon {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    margin-left: 0.25rem;
    vertical-align: middle;
    transition: transform var(--transition-base);
}

.experience-description {
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
}

/* Education Note */
.education-note {
    margin-top: 2rem;
    padding: 1rem 1.5rem;
    background-color: rgba(148, 163, 184, 0.05);
    border-radius: 0.5rem;
    border-left: 2px solid var(--color-accent);
}

.education-label {
    color: var(--color-accent);
    font-weight: 600;
}

.education-text {
    font-size: 0.875rem;
    color: var(--color-text-primary);
}

/* ========================================
   TECH TAGS / BADGES
   ======================================== */
.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    list-style: none;
}

.tech-tag {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-accent);
    background-color: var(--color-badge-bg);
    border-radius: 9999px;
    line-height: 1.5;
}

/* ========================================
   PROJECTS SECTION
   ======================================== */
.project-list {
    list-style: none;
}

.project-item {
    margin-bottom: 3rem;
}

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

.project-card {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 1.25rem;
    padding: 1.5rem;
    margin: -1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-base);
}

.project-card:hover {
    background-color: var(--color-card-hover);
    box-shadow: inset 0 1px 0 0 rgba(148, 163, 184, 0.1);
    transform: translateX(4px);
}

.project-card:hover .project-title {
    color: var(--color-accent);
}

.project-card:hover .external-icon {
    transform: translate(2px, -2px);
}

.project-card:hover .project-placeholder {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.project-image {
    flex-shrink: 0;
}

.project-placeholder {
    width: 100px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(148, 163, 184, 0.05);
    border: 1px solid var(--color-border);
    border-radius: 0.375rem;
    color: var(--color-text-primary);
    transition: all var(--transition-base);
}

.project-placeholder svg {
    width: 2rem;
    height: 2rem;
}

.project-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-heading);
    line-height: 1.3;
    margin-bottom: 0.5rem;
    transition: color var(--transition-base);
}

.project-description {
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    padding-top: 4rem;
    max-width: 500px;
}

.footer p {
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--color-text-primary);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

/* Large Desktop */
@media (min-width: 1280px) {
    .container {
        padding: 0 6rem;
    }
}

/* Tablet / Small Desktop */
@media (max-width: 1024px) {
    .container {
        flex-direction: column;
    }
    
    .sidebar {
        position: relative;
        width: 100%;
        max-height: none;
        padding: 4rem 0 2rem;
    }
    
    .header-main {
        margin-bottom: 2rem;
    }
    
    .nav {
        display: none;
    }
    
    .social-links {
        margin-top: 2rem;
    }
    
    .main-content {
        width: 100%;
        padding: 2rem 0 4rem;
    }
    
    .section-header-sticky {
        display: block;
    }
}

/* Mobile */
@media (max-width: 640px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .name {
        font-size: 2.5rem;
    }
    
    .role {
        font-size: 1.125rem;
    }
    
    .sidebar {
        padding: 3rem 0 1.5rem;
    }
    
    .main-content {
        padding: 1rem 0 3rem;
    }
    
    .section {
        margin-bottom: 4rem;
    }
    
    .experience-card,
    .project-card {
        grid-template-columns: 1fr;
        gap: 0.5rem;
        padding: 1rem;
        margin: -1rem;
    }
    
    .experience-date {
        min-width: auto;
        margin-bottom: 0.5rem;
    }
    
    .project-image {
        display: none;
    }
    
    .footer {
        padding-top: 2rem;
    }
}

/* Small Mobile */
@media (max-width: 380px) {
    .name {
        font-size: 2rem;
    }
    
    .tech-tags {
        gap: 0.375rem;
    }
    
    .tech-tag {
        padding: 0.2rem 0.5rem;
        font-size: 0.7rem;
    }
}

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

/* Focus Styles for Accessibility */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
}

a:focus:not(:focus-visible) {
    outline: none;
}