/* ============================================================================
   UIDCYBER.COM - Senior Security Engineer Portfolio
   Custom-coded by Gino Pepenella
   ============================================================================ */

/* ============================================================================
   CSS CUSTOM PROPERTIES & FOUNDATION
   ============================================================================ */

:root {
    /* Color System - Business Executive Palette */
    --color-bg-primary: #0f1419;
    --color-bg-secondary: #1a1f2e;
    --color-bg-tertiary: #232938;
    --color-bg-elevated: #2d3548;

    /* Accent Colors - Corporate Professional */
    --color-accent-primary: #4a7bc8;
    --color-accent-secondary: #6b95d4;
    --color-accent-success: #3a9679;
    --color-accent-warning: #d4a574;
    --color-accent-muted: #6d7a96;

    /* Text Colors */
    --color-text-primary: #e8edf5;
    --color-text-secondary: #a8b2d1;
    --color-text-tertiary: #717c99;
    --color-text-muted: #4a5568;

    /* Gradients - Corporate & Refined */
    --gradient-primary: linear-gradient(135deg, #4a7bc8 0%, #35588a 100%);
    --gradient-mesh: radial-gradient(at 0% 0%, rgba(74, 123, 200, 0.06) 0, transparent 50%),
                     radial-gradient(at 100% 0%, rgba(53, 88, 138, 0.04) 0, transparent 50%),
                     radial-gradient(at 100% 100%, rgba(58, 150, 121, 0.04) 0, transparent 50%);

    /* Shadows & Effects - Executive & Refined */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 40px rgba(0, 0, 0, 0.6);
    --glow-primary: 0 0 20px rgba(74, 123, 200, 0.15);
    --glow-accent: 0 0 16px rgba(107, 149, 212, 0.12);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

    /* Spacing Scale */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================================
   RESET & BASE STYLES
   ============================================================================ */

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

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

body {
    font-family: var(--font-primary);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ============================================================================
   ANIMATED BACKGROUND EFFECTS
   ============================================================================ */

.bg-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-mesh);
    opacity: 1;
    z-index: 0;
    pointer-events: none;
}

.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        repeating-linear-gradient(0deg, transparent, transparent 99px, rgba(74, 123, 200, 0.015) 99px, rgba(74, 123, 200, 0.015) 100px),
        repeating-linear-gradient(90deg, transparent, transparent 99px, rgba(74, 123, 200, 0.015) 99px, rgba(74, 123, 200, 0.015) 100px);
    z-index: 0;
    pointer-events: none;
    animation: none;
    will-change: transform;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

@keyframes gridFloat {
    0% { transform: translate(0, 0); }
    100% { transform: translate(80px, 80px); }
}

/* ============================================================================
   LAYOUT & CONTAINER
   ============================================================================ */

.page-wrapper {
    position: relative;
    z-index: 1;
    min-height: 100vh;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section {
    padding: var(--space-3xl) 0;
    position: relative;
}

.section-dark {
    background: var(--color-bg-secondary);
}

/* ============================================================================
   SECTION HEADERS
   ============================================================================ */

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--color-accent-primary);
    background: rgba(74, 123, 200, 0.1);
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-full);
    border: 1px solid rgba(74, 123, 200, 0.3);
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    color: var(--color-text-primary);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

/* ============================================================================
   HERO SECTION
   ============================================================================ */

.hero-section {
    padding: var(--space-3xl) 0;
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

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

/* UID Banner - Terminal Style */
.uid-banner {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    background: rgba(26, 31, 46, 0.8);
    border: 1px solid rgba(74, 123, 200, 0.3);
    border-radius: var(--radius-md);
    padding: 0.85rem 1.4rem;
    margin-bottom: var(--space-lg);
    display: block;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
    text-align: left;
    line-height: 1.7;
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.uid-banner:hover {
    border-color: rgba(74, 123, 200, 0.5);
    box-shadow: var(--shadow-lg), 0 0 16px rgba(74, 123, 200, 0.12);
}

.uid-prompt-line {
    color: var(--color-accent-success);
    font-weight: 600;
}

.uid-output {
    color: var(--color-text-secondary);
    font-weight: 400;
}

.uid-comment {
    color: var(--color-text-tertiary);
    font-weight: 400;
    font-style: italic;
    opacity: 0.85;
}

.profile-image-wrapper {
    position: relative;
    display: inline-block;
    margin-bottom: var(--space-lg);
}

.profile-image {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--color-accent-primary);
    box-shadow: var(--shadow-lg), var(--glow-primary);
    transition: all var(--transition-slow);
    will-change: transform;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.profile-image:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-xl), 0 0 32px rgba(74, 158, 255, 0.5);
}

.status-indicator {
    position: absolute;
    bottom: 8px;
    right: 8px;
    width: 20px;
    height: 20px;
    background: var(--color-accent-success);
    border-radius: 50%;
    border: 3px solid var(--color-bg-primary);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.1);
    }
}

.hero-name {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.credentials-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
}

.credential-badge {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    padding: 0.5rem 1rem;
    background: rgba(74, 123, 200, 0.1);
    border: 1px solid rgba(74, 123, 200, 0.35);
    border-radius: var(--radius-md);
    color: var(--color-accent-primary);
    transition: all var(--transition-base);
}

.credential-badge.cissp {
    background: rgba(58, 150, 121, 0.1);
    border-color: rgba(58, 150, 121, 0.4);
    color: var(--color-accent-success);
    font-weight: 800;
}

.credential-badge:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.credential-divider {
    color: var(--color-text-tertiary);
    font-weight: 300;
}

.hero-title {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-xs);
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.hero-location {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-xl);
}

.hero-location svg {
    opacity: 0.7;
}

.hero-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================================================
   BUTTONS
   ============================================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-family: var(--font-primary);
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #ffffff;
    box-shadow: var(--shadow-md);
}

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

.btn-secondary {
    background: transparent;
    color: var(--color-accent-primary);
    border-color: rgba(74, 158, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(74, 158, 255, 0.1);
    border-color: var(--color-accent-primary);
    transform: translateY(-2px);
}

/* ============================================================================
   POSITION CARD
   ============================================================================ */

.position-card {
    background: linear-gradient(135deg, var(--color-bg-tertiary) 0%, rgba(35, 41, 56, 0.95) 100%);
    border: 1px solid rgba(74, 123, 200, 0.25);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-slow);
    will-change: transform;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

.position-card:hover {
    border-color: rgba(74, 123, 200, 0.45);
    box-shadow: var(--shadow-xl), var(--glow-primary);
    transform: translateY(-6px);
}

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

.position-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-accent-primary);
    margin-bottom: 0.25rem;
}

.position-org {
    font-size: 1.15rem;
    color: var(--color-accent-secondary);
    font-weight: 500;
}

.position-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-accent-success);
    background: rgba(58, 150, 121, 0.1);
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-full);
    border: 1px solid rgba(58, 150, 121, 0.35);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent-success);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

.position-description {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.position-description strong {
    color: var(--color-text-primary);
    font-weight: 600;
}

.position-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(74, 158, 255, 0.1);
}

.highlight-item {
    display: flex;
    gap: var(--space-sm);
}

.highlight-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(74, 123, 200, 0.15);
    border-radius: var(--radius-md);
    border: 1px solid rgba(74, 123, 200, 0.25);
    color: var(--color-accent-primary);
}

.highlight-content {
    flex: 1;
}

.highlight-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
    margin-bottom: 0.25rem;
}

.highlight-value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

/* ============================================================================
   EXPERTISE GRID
   ============================================================================ */

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
}

.expertise-card {
    background: linear-gradient(135deg, var(--color-bg-tertiary) 0%, rgba(35, 41, 56, 0.92) 100%);
    border: 1px solid rgba(74, 123, 200, 0.22);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    transition: all var(--transition-slow);
    position: relative;
    overflow: hidden;
    will-change: transform;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.expertise-card:hover {
    border-color: rgba(74, 123, 200, 0.45);
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl), var(--glow-primary);
}

.expertise-card:hover::before {
    opacity: 1;
}

.expertise-number {
    font-family: var(--font-mono);
    font-size: 3.5rem;
    font-weight: 900;
    color: rgba(74, 123, 200, 0.15);
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.expertise-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
}

.expertise-description {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.expertise-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    padding: 0.4rem 0.85rem;
    background: rgba(74, 123, 200, 0.1);
    border: 1px solid rgba(74, 123, 200, 0.3);
    border-radius: var(--radius-md);
    color: var(--color-accent-primary);
    transition: all var(--transition-fast);
}

.tag:hover {
    background: rgba(74, 123, 200, 0.16);
    border-color: rgba(74, 123, 200, 0.5);
}

/* ============================================================================
   PROJECTS GRID
   ============================================================================ */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: var(--space-lg);
}

.project-card {
    background: linear-gradient(135deg, var(--color-bg-tertiary) 0%, rgba(35, 41, 56, 0.9) 100%);
    border: 1px solid rgba(107, 149, 212, 0.22);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-slow);
    display: flex;
    flex-direction: column;
    will-change: transform;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

.project-card:hover {
    border-color: rgba(107, 149, 212, 0.45);
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl), var(--glow-accent);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    background: rgba(107, 149, 212, 0.05);
    border-bottom: 1px solid rgba(107, 149, 212, 0.15);
}

.project-type {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--color-accent-secondary);
}

.project-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-accent-success);
}

.status-dot {
    width: 6px;
    height: 6px;
    background: var(--color-accent-success);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

.project-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-text-primary);
    padding: 0 var(--space-lg);
    margin-top: var(--space-md);
    line-height: 1.3;
}

.project-description {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    padding: var(--space-md) var(--space-lg);
    flex: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0 var(--space-lg) var(--space-md);
}

.tech-badge {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    padding: 0.4rem 0.85rem;
    background: rgba(107, 149, 212, 0.1);
    border: 1px solid rgba(107, 149, 212, 0.3);
    border-radius: var(--radius-md);
    color: var(--color-accent-secondary);
}

.project-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid rgba(107, 149, 212, 0.15);
    color: var(--color-accent-secondary);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-base);
}

.project-link:hover {
    background: rgba(107, 149, 212, 0.08);
}

.project-link svg {
    transition: transform var(--transition-base);
}

.project-link:hover svg {
    transform: translate(4px, -4px);
}

/* ============================================================================
   TECHNOLOGY STACK GRID
   ============================================================================ */

.tech-stack-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.tech-category-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-accent-primary);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid rgba(74, 123, 200, 0.3);
}

.tech-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.tech-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    padding: 0.75rem;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    border-left: 3px solid transparent;
    transition: all var(--transition-base);
}

.tech-item:hover {
    background: var(--color-bg-elevated);
    border-left-color: var(--color-accent-primary);
    transform: translateX(4px);
    color: var(--color-text-primary);
}

.tech-dot {
    width: 6px;
    height: 6px;
    background: var(--color-accent-primary);
    border-radius: 50%;
    flex-shrink: 0;
}

/* ============================================================================
   PERSONAL GRID
   ============================================================================ */

.personal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.personal-card {
    background: linear-gradient(135deg, var(--color-bg-tertiary) 0%, rgba(35, 41, 56, 0.92) 100%);
    border: 1px solid rgba(74, 123, 200, 0.22);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    text-align: center;
    transition: all var(--transition-slow);
    will-change: transform;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

.personal-card:hover {
    border-color: rgba(74, 123, 200, 0.4);
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg), var(--glow-primary);
}

.personal-icon {
    width: 68px;
    height: 68px;
    margin: 0 auto var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(74, 123, 200, 0.15);
    border: 1px solid rgba(74, 123, 200, 0.25);
    border-radius: var(--radius-md);
    color: var(--color-accent-primary);
}

.personal-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.personal-description {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

/* ============================================================================
   FOOTER
   ============================================================================ */

.footer {
    background: var(--color-bg-secondary);
    padding: var(--space-3xl) 0 var(--space-xl);
    border-top: 1px solid rgba(74, 123, 200, 0.2);
}

.footer-content {
    text-align: center;
}

.footer-main {
    margin-bottom: var(--space-lg);
}

.footer-name {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
}

.footer-title {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: 0.25rem;
}

.footer-subtitle {
    font-size: 0.95rem;
    color: var(--color-text-tertiary);
}

.footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin-bottom: var(--space-lg);
}

.footer-link {
    color: var(--color-accent-primary);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-base);
}

.footer-link:hover {
    color: var(--color-accent-secondary);
    text-decoration: underline;
}

.footer-divider {
    color: var(--color-text-muted);
    user-select: none;
}

.footer-badges {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin-bottom: var(--space-lg);
}

.footer-badge {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 600;
    padding: 0.45rem 0.9rem;
    background: rgba(74, 123, 200, 0.08);
    border: 1px solid rgba(74, 123, 200, 0.25);
    border-radius: var(--radius-md);
    color: var(--color-accent-primary);
}

.footer-copyright {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-text-tertiary);
}

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

@media (max-width: 1024px) {
    .container {
        padding: 0 var(--space-md);
    }

    .section {
        padding: var(--space-2xl) 0;
    }

    .expertise-grid,
    .projects-grid,
    .tech-stack-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero-section {
        min-height: auto;
        padding: var(--space-2xl) 0;
    }

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

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

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
    }

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

@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }

    .container {
        padding: 0 var(--space-sm);
    }

    .position-card,
    .expertise-card,
    .project-card,
    .personal-card {
        padding: var(--space-lg);
    }

    .credentials-bar {
        flex-direction: column;
        gap: 0.5rem;
    }

    .credential-divider {
        display: none;
    }
}

/* ============================================================================
   SCROLL ANIMATIONS
   ============================================================================ */

@media (prefers-reduced-motion: no-preference) {
    .section {
        opacity: 0;
        transform: translateY(20px);
        animation: fadeInUp 0.8s ease-out forwards;
    }

    .section:nth-child(even) {
        animation-delay: 0.1s;
    }

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

/* ============================================================================
   SELECTION STYLES
   ============================================================================ */

::selection {
    background: rgba(74, 123, 200, 0.4);
    color: var(--color-text-primary);
}

::-webkit-scrollbar {
    width: 10px;
}

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

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

::-webkit-scrollbar-thumb:hover {
    background: rgba(74, 123, 200, 0.4);
}