/* ============================================================
   CYBERSECURITY PORTFOLIO - MAIN STYLESHEET
   Author: Noor Elahi Ali Shibly
   ============================================================ */

/* 1. CSS VARIABLES */
:root {
    --bg-primary: #0D0D0D;
    --bg-secondary: #161616;
    --bg-tertiary: #1E1E1E;
    --accent: #00FF88;
    --accent-glow: rgba(0, 255, 136, 0.3);
    --accent-blue: #00D4FF;
    --text-primary: #FFFFFF;
    --text-secondary: #B0B0B0;
    --text-muted: #666666;
    --border: #2A2A2A;
    --danger: #FF4444;
    --warning: #FFB800;
    --font-heading: 'JetBrains Mono', monospace;
    --font-body: 'Roboto', sans-serif;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--accent-glow);
}

/* 2. RESET & BASE */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-secondary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

ul,
ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

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

/* 3. TYPOGRAPHY */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.2;
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h3 {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
}

p {
    margin-bottom: var(--spacing-md);
}

strong {
    color: var(--text-primary);
    font-weight: 500;
}

.comment {
    color: var(--text-muted);
}

/* 4. LAYOUT */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-xl) 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

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

.section-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border);
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), transparent);
}

/* 5. NAVIGATION */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(13, 13, 13, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
}

.logo-bracket {
    color: var(--accent);
}

.logo-text {
    color: var(--text-primary);
}

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

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent);
    transition: width var(--transition-fast);
}

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

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

.nav-cta {
    background-color: var(--accent);
    color: var(--bg-primary) !important;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.nav-cta:hover {
    background-color: var(--text-primary);
}

.nav-cta::after {
    display: none;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    position: relative;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: transform var(--transition-fast);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

.nav-toggle.active .hamburger {
    background-color: transparent;
}

.nav-toggle.active .hamburger::before {
    transform: rotate(45deg) translate(5px, 6px);
}

.nav-toggle.active .hamburger::after {
    transform: rotate(-45deg) translate(5px, -6px);
}

/* 6. HERO SECTION */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.scanlines {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0, 0, 0, 0.03) 2px, rgba(0, 0, 0, 0.03) 4px);
    z-index: 1;
}

.hero-container {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 800px;
    padding: var(--spacing-lg);
}

.terminal-window {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.terminal-header {
    background-color: var(--bg-tertiary);
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    border-bottom: 1px solid var(--border);
}

.terminal-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-dot.red {
    background-color: #FF5F56;
}

.terminal-dot.yellow {
    background-color: #FFBD2E;
}

.terminal-dot.green {
    background-color: #27CA40;
}

.terminal-title {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: var(--spacing-sm);
}

.terminal-body {
    padding: var(--spacing-lg);
}

.terminal-line {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.prompt {
    color: var(--accent);
    margin-right: var(--spacing-sm);
}

.hero-name {
    font-size: clamp(2rem, 6vw, 3.5rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.cursor {
    color: var(--accent);
    animation: blink 1s step-end infinite;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

.hero-title {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 400;
    color: var(--accent);
    margin-bottom: var(--spacing-lg);
}

.hero-summary {
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: var(--spacing-lg);
}

.hero-links {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.hero-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 1.25rem;
    transition: all var(--transition-fast);
}

.hero-link:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--accent-glow);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-muted);
    font-size: 0.75rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    40% {
        transform: translateX(-50%) translateY(-10px);
    }

    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* 7. ABOUT SECTION */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.stat-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-fast);
}

.stat-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

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

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* About Me Profile Image */
.about-text::after {
    content: '';
    display: table;
    clear: both;
}

.about-image {
    float: left;
    max-width: 250px;
    margin: 0 var(--spacing-lg) var(--spacing-md) 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 2px solid var(--border);
    transition: all var(--transition-normal);
    position: relative;
    shape-outside: margin-box;
}

.about-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--radius-md);
    pointer-events: none;
    transition: box-shadow var(--transition-normal);
}

.about-image:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.about-photo {
    width: 100%;
    height: auto;
    display: block;
    filter: grayscale(100%) contrast(1.1) brightness(0.95);
    transition: filter 0.5s ease, transform 0.5s ease;
}

.about-image:hover .about-photo {
    filter: grayscale(0%) contrast(1) brightness(1);
    transform: scale(1.03);
}

/* About Text — drop cap on greeting */
.drop-cap {
    font-family: var(--font-heading);
    font-size: 4.2rem;
    font-weight: 700;
    float: left;
    line-height: 1;
    margin-right: 0.5rem;
    margin-top: 0.05rem;
    color: var(--accent);
}

/* About Text — improved paragraph readability */
.about-text p {
    line-height: 1.75;
}


/* Education Subsection inside About */
.about-education {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border);
}

.about-subsection-title {
    font-size: 1rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border);
    position: relative;
}

.about-subsection-title::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), transparent);
}

/* 8. TIMELINE (Experience) */
.timeline {
    position: relative;
    padding-left: var(--spacing-xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent), var(--accent-blue));
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-xl);
}

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

.timeline-marker {
    position: absolute;
    left: calc(-1 * var(--spacing-xl) - 5px);
    top: 0;
    width: 12px;
    height: 12px;
    background-color: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-glow);
}

.timeline-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    transition: all var(--transition-fast);
}

.timeline-content:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
}

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

.timeline-company {
    color: var(--accent);
    font-family: var(--font-heading);
    font-size: 0.875rem;
}

.timeline-subtitle {
    color: var(--text-muted);
    font-style: italic;
    margin-bottom: var(--spacing-sm);
}

.timeline-supervisor {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.timeline-supervisor i {
    color: var(--accent);
    margin-right: var(--spacing-xs);
}

.timeline-list {
    margin-bottom: var(--spacing-md);
}

.timeline-list li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.timeline-list li::before {
    content: '>';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-family: var(--font-heading);
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.timeline-note {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border);
    font-size: 0.875rem;
    color: var(--accent-blue);
}

/* 9. TAGS */
.tag {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: rgba(0, 255, 136, 0.1);
    border: 1px solid var(--accent);
    border-radius: var(--radius-sm);
    color: var(--accent);
}

/* 10. PROJECTS */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.project-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.project-card:hover {
    border-color: var(--accent);
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

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

.project-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 255, 136, 0.1);
    border-radius: var(--radius-sm);
    color: var(--accent);
    font-size: 1.5rem;
}

.project-icon.critical {
    background-color: rgba(255, 68, 68, 0.1);
    color: var(--danger);
}

.project-links a {
    color: var(--text-muted);
    font-size: 1.25rem;
}

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

.severity-badge {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.625rem;
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
}

.severity-badge.critical {
    background-color: rgba(255, 68, 68, 0.2);
    color: var(--danger);
    border: 1px solid var(--danger);
}

.project-title {
    margin-bottom: var(--spacing-xs);
}

.project-subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

.project-features li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

.project-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent);
}

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

/* 11. SKILLS */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.skill-category {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    transition: all var(--transition-fast);
}

.skill-category:hover {
    border-color: var(--accent);
}

.skill-category h3 {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.skill-category h3 i {
    color: var(--accent);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.skill-tag {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.skill-tag:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* 12. EDUCATION */
.education-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
    transition: all var(--transition-fast);
}

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

.education-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 255, 136, 0.1);
    border-radius: var(--radius-md);
    color: var(--accent);
    font-size: 2rem;
    flex-shrink: 0;
}

.education-school {
    color: var(--accent);
    margin-bottom: var(--spacing-xs);
}

.education-major {
    color: var(--text-muted);
    font-style: italic;
    margin-bottom: var(--spacing-sm);
}

.cgpa {
    font-family: var(--font-heading);
    color: var(--accent);
}

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

/* 13. CONTACT */
.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-terminal {
    background-color: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.contact-message {
    margin: var(--spacing-md) 0 var(--spacing-lg);
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.contact-link:hover {
    border-color: var(--accent);
    transform: translateX(8px);
}

.contact-link i {
    font-size: 1.25rem;
    color: var(--accent);
    width: 24px;
    text-align: center;
}

/* 14. BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 500;
    padding: var(--spacing-md) var(--spacing-lg);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.btn-primary:hover {
    background-color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

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

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

/* 15. ANIMATIONS */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* 16. FOOTER */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.footer-text {
    font-size: 0.875rem;
    margin-bottom: var(--spacing-xs);
}

.footer-note {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-style: italic;
}

/* 17. RESPONSIVE */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background-color: var(--bg-secondary);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        border-bottom: 1px solid var(--border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .about-image {
        float: none;
        max-width: 200px;
        margin: 0 auto var(--spacing-lg) auto;
    }

    .about-stats {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }

    .stat-card {
        flex: 1;
        min-width: 120px;
    }

    .timeline {
        padding-left: var(--spacing-lg);
    }

    .timeline-marker {
        left: calc(-1 * var(--spacing-lg) - 5px);
    }

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

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

    .education-card {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .terminal-body {
        padding: var(--spacing-md);
    }

    .about-stats {
        flex-direction: column;
    }

    .hero-links {
        justify-content: center;
    }
}