/*
   Sean Armour Portfolio - Dark Theme
   Clean, minimal, professional
*/

/* Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* Variables */
:root {
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a2e;
    --text-primary: #ffffff;
    --text-body: #e2e8f0;
    --text-muted: #94a3b8;
    --accent: #4a9eff;
    --accent-hover: #6bb3ff;
    --border: #2d2d44;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --max-width: 800px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 5rem;
}

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

/* Base */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 17px;
    line-height: 1.7;
    color: var(--text-body);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4 {
    color: var(--text-primary);
    font-weight: 600;
    line-height: 1.3;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
}

h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
}

h3 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

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

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

ul {
    list-style: none;
}

/* Layout */
main {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

section {
    padding: var(--spacing-2xl) 0;
    border-bottom: 1px solid var(--border);
}

section:last-of-type {
    border-bottom: none;
}

/* Header & Navigation */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border);
}

nav {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-lg);
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-body);
    transition: transform 0.2s ease;
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--text-body);
    font-size: 0.95rem;
    font-weight: 500;
}

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

/* Hero Section */
#hero {
    padding: var(--spacing-2xl) 0;
    border-bottom: 1px solid var(--border);
}

#hero h1 {
    margin-bottom: var(--spacing-xs);
}

#hero .title {
    font-size: 1.25rem;
    color: var(--accent);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

#hero .tagline {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.7rem 1.4rem;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: 6px;
    transition: all 0.2s ease;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--text-body);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--text-muted);
    color: var(--text-primary);
}

/* About Section */
.about-content p {
    max-width: 100%;
}

.about-content .location {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-top: var(--spacing-md);
}

/* Skills Section */
.skills-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.skill-category h3 {
    color: var(--text-muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-sm);
}

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

.skill-tags span {
    background-color: var(--bg-secondary);
    color: var(--text-body);
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    font-size: 0.9rem;
    border: 1px solid var(--border);
}

.skill-tags.learning span {
    border-color: var(--accent);
    border-style: dashed;
}

/* Projects Section */
.projects-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.project {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: var(--spacing-md);
}

.project-header {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.project-header h3 {
    margin-bottom: 0;
}

.project-type {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.project-description {
    margin-bottom: var(--spacing-sm);
}

.project-stack {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.project-stack span {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent);
    background-color: rgba(74, 158, 255, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 3px;
}

.project-highlights {
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.project-highlights li {
    position: relative;
    padding-left: var(--spacing-sm);
    margin-bottom: 0.4rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.project-highlights li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--accent);
}

.project-note {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
    margin-bottom: 0;
}

/* Experience Section */
.experience-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.experience-item {
    padding-left: var(--spacing-md);
    border-left: 2px solid var(--border);
}

.experience-header {
    margin-bottom: var(--spacing-sm);
}

.experience-header h3 {
    margin-bottom: 0.25rem;
}

.experience-company {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.experience-date {
    display: block;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.experience-item ul {
    margin-left: var(--spacing-sm);
}

.experience-item li {
    position: relative;
    padding-left: var(--spacing-sm);
    margin-bottom: 0.4rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.experience-item li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--accent);
}

/* Education Section */
.education-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.education-item h3 {
    margin-bottom: 0.25rem;
}

.education-item p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 0;
}

.education-status {
    display: inline-block;
    font-size: 0.85rem;
    color: var(--accent);
    margin-left: var(--spacing-xs);
}

/* Contact Section */
#contact h2 {
    margin-bottom: var(--spacing-lg);
}

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

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-body);
    font-size: 1rem;
    padding: var(--spacing-xs) 0;
}

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

.contact-link svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.location-footer {
    margin-top: var(--spacing-lg);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Footer */
footer {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-lg);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Mobile Responsive */
@media (max-width: 640px) {
    body {
        font-size: 16px;
    }

    main {
        padding: 0 var(--spacing-sm);
    }

    nav {
        padding: var(--spacing-sm);
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--bg-primary);
        border-bottom: 1px solid var(--border);
        padding: var(--spacing-sm);
        gap: 0;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        padding: var(--spacing-sm);
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.3rem;
    }

    section {
        padding: var(--spacing-xl) 0;
    }

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

    .hero-cta .btn {
        text-align: center;
    }

    .project-header {
        flex-direction: column;
        gap: 0.25rem;
    }

    .experience-header {
        display: flex;
        flex-direction: column;
    }
}

/* Scroll Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* Staggered animations for children */
.stagger-children > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease-out, transform 0.4s ease-out;
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0ms; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 80ms; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 160ms; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 240ms; }
.stagger-children.visible > *:nth-child(5) { transition-delay: 320ms; }
.stagger-children.visible > *:nth-child(6) { transition-delay: 400ms; }

.stagger-children.visible > * {
    opacity: 1;
    transform: translateY(0);
}

/* Slide in from left */
.slide-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Scale in effect for project cards */
.scale-in {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    .fade-in,
    .stagger-children > *,
    .slide-in-left,
    .scale-in {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* Focus states for accessibility */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    body {
        background: white;
        color: black;
    }

    header, footer, .hero-cta {
        display: none;
    }

    section {
        border: none;
        padding: 1rem 0;
    }

    a {
        color: black;
    }

    .project, .skill-tags span {
        background: #f5f5f5;
        border-color: #ddd;
    }
}