/* 
   Stephen's Tech Portfolio Website
   Main Stylesheet
   Author: Stephen
   Version: 1.0
*/

/* ===== Variables ===== */
:root {
    /* Color Scheme (Dark Mode - Default) */
    --color-primary: #f39c12;       /* Orange */
    --color-secondary: #27ae60;     /* Green */
    --color-accent: #c0392b;        /* Red */
    --color-surface: #1c1f26;      /* For cards, headers, etc. */
    --color-bg: #14161a;            /* Main background */
    --color-bg-alt: #1c1f26;       /* Alternate background for sections */
    --color-text: #ecf0f1;          /* Main text color */
    --color-text-muted: #bdc3c7;      /* Lighter text/sub-headings */
    --color-text-on-primary: #ffffff; /* White text (on orange buttons) */
    --color-border: #34495e;        /* Borders */
    --color-shadow: rgba(0, 0, 0, 0.3); /* Shadow color */
    
    /* Typography, Spacing, etc. remain the same */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen-Sans, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
    --heading-line-height: 1.2;
    --body-line-height: 1.6;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --container-width: 1200px;
    --container-padding: 20px;
}

body.light-mode {
    --color-surface: #ffffff;
    --color-bg: #f9f9f9;
    --color-bg-alt: #ffffff;
    --color-text: #2c3e50;
    --color-text-muted: #555555;
    --color-border: #dddddd;
    --color-shadow: rgba(0, 0, 0, 0.1);
}

body.light-mode .header-logo-cropped {
    background-color: #000;
    padding: 5px;
    border-radius: var(--border-radius-sm);
}

/* ===== Base Styles ===== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: var(--body-line-height);
    color: var(--color-text-muted);
    background-color: var(--color-bg);
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: var(--heading-line-height);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

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

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

a:hover {
    color: #f5b041;
}

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

ul, ol {
    list-style: none;
    margin-bottom: var(--spacing-sm);
}

/* ===== Utility Classes ===== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--color-primary);
    margin: var(--spacing-xs) auto 0;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    outline: none;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-on-primary);
}

.btn-primary:hover {
    background-color: #d35400;
    color: var(--color-text-on-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--color-shadow);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-text-on-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--color-shadow);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn-outline:hover {
    background-color: var(--color-surface);
    color: var(--color-text);
}

/* ===== Header & Navigation ===== */
header {
    background-color: var(--color-surface);
    box-shadow: 0 2px 10px var(--color-shadow);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--transition-normal);
}

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

/* Specific padding for homepage nav to align with hero image */
.home-page nav {
    padding-left: 30px;
    padding-right: 30px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-logo-cropped {
    height: 40px;
    width: auto;
}

.logo-img {
    height: 40px;
    width: 40px;
}

.logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    position: relative;
    top: 5px;
}

.nav-links li a {
    color: var(--color-text);
    font-weight: 500;
    position: relative;
}

.nav-links li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-normal);
}

.nav-links li a:hover::after,
.nav-links li a.active::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-text);
    margin: 2px 0;
    transition: all var(--transition-normal);
}

.theme-switcher {
    margin-left: var(--spacing-md);
}

#theme-toggle-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    color: var(--color-text);
}

#theme-toggle-btn .sun-icon,
#theme-toggle-btn .moon-icon {
    width: 24px;
    height: 24px;
}

/* ===== Hero Section ===== */
.hero {
    padding: 0;
    position: relative;
    background-color: #000;
}

.hero::before,
.hero::after {
    display: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 100%;
    margin: 0 auto;
    text-align: center;
    line-height: 0;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.hero-content h2 {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.hero-content img {
    width: 100%;
    max-height: 90vh;
    object-fit: cover;
    margin-bottom: 0;
    z-index: 2;
}

.hero .cta-buttons {
    position: absolute;
    bottom: 15%;
    left: 0;
    right: 0;
    z-index: 2;
}

.hero .btn-secondary {
    color: white;
    border-color: white;
}

.hero .btn-secondary:hover {
    background-color: white;
    color: #121212;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

/* ===== Featured Projects Section ===== */
.featured-projects {
    padding: var(--spacing-xl) 0;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.project-card {
    background-color: var(--color-surface);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: 0 4px 12px var(--color-shadow);
    transition: transform var(--transition-normal), background-color var(--transition-normal);
}

.project-card:hover {
    transform: translateY(-5px);
}

.project-image {
    height: 200px;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-info {
    padding: var(--spacing-sm);
}

.project-info h3 {
    margin-bottom: var(--spacing-xs);
}

.project-info p {
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

.view-all {
    text-align: center;
    margin-top: var(--spacing-md);
}

/* ===== Skills Section ===== */
.skills {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg-alt);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.skill-category {
    background-color: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 12px var(--color-shadow);
}

.skill-category h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
    text-align: center;
}

.skill-category ul {
    padding-left: var(--spacing-md);
    list-style-type: disc;
}

.skill-category ul li {
    margin-bottom: var(--spacing-xs);
}

/* ===== CTA Section ===== */
.cta {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg-alt);
    text-align: center;
}

.cta h2 {
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.cta p {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== Footer ===== */
footer {
    background-color: var(--color-surface);
    color: var(--color-text);
    padding: var(--spacing-md) 0;
}

.footer-logo-img {
    height: 150px;
    width: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.footer-logo a {
    color: var(--color-text);
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: flex-start;
}

.footer-links ul li a {
    color: var(--color-text-muted);
}

.footer-links ul li a:hover {
    color: var(--color-primary);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-links a {
    color: var(--color-text-muted);
    transition: color var(--transition-normal);
}

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

.copyright {
    text-align: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

body.light-mode .copyright {
    border-top-color: var(--color-border);
}

/* ===== Projects Page ===== */
.page-header {
    background-color: var(--color-bg-alt);
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.projects-grid {
    padding: var(--spacing-xl) 0;
}

.filter-controls {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1rem;
    background-color: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-normal);
    color: var(--color-text);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--color-primary);
    color: var(--color-text-on-primary);
    border-color: var(--color-primary);
}

.project-items {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: var(--spacing-xs);
}

.project-tags span {
    font-size: 0.8rem;
    padding: 2px 8px;
    background-color: var(--color-bg);
    color: var(--color-text-muted);
    border-radius: var(--border-radius-sm);
}

.project-links {
    display: flex;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

/* ===== About Page ===== */
.about-content {
    padding: var(--spacing-xl) 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.about-image {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 8px 20px var(--color-shadow);
}

.about-text h2 {
    margin-bottom: var(--spacing-sm);
}

.about-text h2 .job-title {
    font-weight: normal;
    font-style: italic;
    color: var(--color-text-muted);
}

.about-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.skills-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg-alt);
}

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

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag {
    padding: 8px 16px;
    background-color: var(--color-bg);
    border-radius: var(--border-radius-sm);
    box-shadow: 0 2px 4px var(--color-shadow);
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* ===== Contact Page ===== */
.contact-content {
    padding: var(--spacing-xl) 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
}

.contact-info {
    background-color: var(--color-bg-alt);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.info-icon {
    color: var(--color-primary);
    flex-shrink: 0;
}

.info-text h3 {
    margin-bottom: var(--spacing-xs);
    font-size: 1.1rem;
}

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

.social-links-contact a {
    color: var(--color-primary);
    text-decoration: underline;
}

.contact-form h2 {
    margin-bottom: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-sm);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-family);
    transition: border-color var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
    background-color: var(--color-surface);
    color: var(--color-text);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    outline: none;
}

.faq {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg-alt);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.faq-item {
    background-color: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 12px var(--color-shadow);
}

.faq-item h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

/* ===== Responsive Styles ===== */
@media screen and (max-width: 992px) {
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .about-image {
        max-width: 400px;
        margin: 0 auto var(--spacing-md);
    }
}

@media screen and (max-width: 768px) {
    html {
        font-size: 15px;
    }
    
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-surface);
        padding: var(--spacing-md);
        box-shadow: 0 4px 8px var(--color-shadow);
        z-index: 100;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .hamburger {
        display: flex;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .footer-links ul {
        justify-content: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .project-grid,
    .project-items {
        grid-template-columns: 1fr;
    }
}

@media screen and (max-width: 480px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content h2 {
        font-size: 1.2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .filter-controls {
        flex-direction: column;
        align-items: center;
    }
}