/* =================================
   CSS Variables (Custom Properties)
   - Centralized theme values for easy updates and consistency.
   ================================= */
:root {
    --font-family-primary: 'Lato', sans-serif;
    --color-text: #34495e;
    /* Dark Slate Blue */
    --color-text-light: #7f8c8d;
    /* Slate Gray */
    --color-text-subtle: #95a5a6;
    /* Light Slate Gray */
    --color-primary: #00796b;
    /* Deep Teal */
    --color-white: #ffffff;
    --color-dark: #2c3e50;
    /* Dark Charcoal */
    --color-border: #ecf0f1;
    /* Lighter border */
    --hero-overlay-color: rgba(44, 62, 80, 0.7);
    /* Darker overlay */
}

/* =================================
   Dark Mode Variables
   ================================= */
[data-theme="dark"] {
    --color-text: #d1d5db;
    /* Softer light gray for text */
    --color-text-light: #9ca3af;
    /* Medium gray for secondary text */
    --color-text-subtle: #6b7280;
    /* Darker gray for subtle text */
    --color-dark: #f9fafb;
    /* Off-white for elements that were dark */
    --color-white: #111827;
    /* Very dark, near-black for main background */
    --color-border: #374151;
    /* Lighter gray for borders */
}

[data-theme="dark"] .bg-light {
    background-color: #1f2937 !important;
    /* A slightly lighter dark for alternating sections */
}

/* =================================
   Global & Reset Styles
   ================================= */
body,
html {
    margin: 0;
    padding: 0;
    font-family: var(--font-family-primary);
    color: var(--color-text);
    box-sizing: border-box;
    background-color: var(--color-white);
    line-height: 1.6;
    scroll-behavior: smooth;
    scroll-padding-top: 70px;
    /* Offset for the fixed header */
}

/* Inherit box-sizing for a more intuitive sizing model */
*,
*:before,
*:after {
    box-sizing: inherit;
}

/* A centered, max-width container for content */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

/* =================================
   Header
   ================================= */
.site-header {
    background-color: var(--color-white);
    padding: 15px 0;
    border-bottom: 1px solid var(--color-border);
    position: fixed;
    /* Make the header sticky */
    width: 100%;
    top: 0;
    left: 0;
    z-index: 100;
}

/* Use flexbox to align logo and navigation */
.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    text-decoration: none;
    color: var(--color-dark);
}

.logo strong {
    font-weight: 700;
    font-size: 24px;
    letter-spacing: 0.5px;
}

.logo span {
    display: block;
    font-size: 10px;
    letter-spacing: 1.5px;
    color: var(--color-text-subtle);
    text-transform: uppercase;
    margin-top: 2px;
}

/* =================================
   Dark Mode Toggle Button
   ================================= */
.dark-mode-toggle {
    background: none;
    border: none;
    color: var(--color-text-light);
    font-size: 20px;
    cursor: pointer;
    padding: 5px;
    margin-right: 15px;
    transition: color 0.3s ease, transform 0.3s ease;
}

.dark-mode-toggle:hover {
    color: var(--color-primary);
    transform: scale(1.1) rotate(-15deg);
}

/* Hide on mobile nav open */
.nav-toggle:checked~.dark-mode-toggle {
    display: none;
}

/* =================================
   Mobile Navigation Toggle (Hamburger)
   ================================= */
.nav-toggle,
.nav-toggle-label {
    display: none;
    /* Hidden on desktop */
    z-index: 101;
}

.nav-toggle {
    opacity: 0;
    position: absolute;
}


/* =================================
   Main Navigation
   ================================= */
.main-nav ul {
    display: flex;
}

.main-nav li {
    margin-left: 35px;
}

.main-nav a {
    text-decoration: none;
    color: var(--color-text-light);
    font-weight: 700;
    font-size: 13px;
    text-transform: uppercase;
    padding-bottom: 5px;
    transition: color 0.3s ease, transform 0.3s ease;
}

.main-nav a:hover {
    color: var(--color-primary);
    transform: translateY(-2px);
}

.main-nav a.active {
    /* No special color for the active link, as requested. Hover is the only color change. */
}

.main-nav .cv-download i {
    font-size: 16px;
    vertical-align: middle;
}

/* =================================
   Home Hero Section
   ================================= */
.home-hero {
    height: 100vh;
    /* background-image: url('./assets/images/background.avif'); REMOVED */
    background-color: var(--color-dark);
    /* Fallback/Base color */
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--color-white);
    overflow: hidden;
    /* Ensure canvas doesn't overflow */
}

#particles-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    /* Above overlay */
}

[data-theme="dark"] .home-hero {
    /* Ensure hero text is always light, regardless of theme */
    color: #ffffff;
    background-color: #111827;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--hero-overlay-color);
    z-index: 1;
    /* Below particles */
}

.hero-content {
    position: relative;
    z-index: 3;
    /* Above everything */
    max-width: 800px;
}

.hero-content h1 {
    font-size: 56px;
    font-weight: 700;
    margin: 0 0 15px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 20px;
    font-weight: 300;
    margin-bottom: 40px;
    color: rgba(255, 255, 255, 0.9);
}

.btn-primary {
    background-color: var(--color-white);
    color: var(--color-text);
    border: 2px solid var(--color-white);
    padding: 15px 30px;
}

.btn-primary:hover,
.btn-primary:active {
    background-color: transparent;
    color: var(--color-white);
}

.btn {
    -webkit-tap-highlight-color: transparent;
    /* Removes the default blue tap highlight on mobile */
    padding: 15px 30px;
    border: none;
    cursor: pointer;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 14px;
    transition: all 0.3s ease;
    border-radius: 4px;
}

/* =================================
   Page Header (for sub-pages)
   ================================= */
.page-header {
    padding: 120px 0 60px;
    background-color: var(--color-dark);
    text-align: center;
    color: var(--color-white);
}

.page-header h1 {
    font-size: 36px;
    font-weight: 700;
    margin: 0;
}

[data-theme="dark"] .page-header {
    background-color: #1f2937;
    /* Use the alternating dark background */
    color: #f9fafb;
    /* Use a light text color */
}

.content-section {
    padding: 100px 0;
}

.content-section.bg-light {
    background-color: #f8f9fa;
}

.section-title {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-top: 0;
    margin-bottom: 60px;
    color: var(--color-dark);
}

/* =================================
   About Page - Team Section
   ================================= */
.about-intro {
    max-width: 800px;
    margin: 0 auto 30px auto;
    margin: 0 auto 15px auto;
    text-align: center;
    font-size: 18px;
    line-height: 1.7;
}

/* About Me Section */
.about-me-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 50px;
    align-items: center;
    align-items: start;
}

.about-me-image img {
    max-width: 280px;
    width: 100%;
    border-radius: 50%;
    border: 7px solid var(--color-white);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin: 0 auto 30px auto;
    display: block;
}

[data-theme="dark"] .about-me-image img {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    border-color: #1f2937;
    /* Match the dark bg-light color */
    display: block;
}

.about-me-text .bio {
    margin-bottom: 40px;
}

.about-me-text .skills-list {
    margin-bottom: 40px;
}

/* Responsive layout for About Me section on tablets and up */
@media (min-width: 768px) {
    .about-me-content {
        grid-template-columns: 1fr 2fr;
        gap: 40px;
    }

    .about-me-image img {
        margin-bottom: 0;
    }
}

@media (min-width: 1024px) {
    .about-me-content {
        grid-template-columns: 1fr 2fr;
        gap: 60px;
    }

    .about-me-image img {
        margin-bottom: 0;
    }
}

.skills-list h3 {
    margin-top: 0;
    color: var(--color-dark);
}

.skills-list ul li {
    background-color: var(--color-border);
    color: var(--color-text-light);
    padding: 8px 15px;
    margin-bottom: 10px;
    border-radius: 4px;
}

.education-entry {
    margin-bottom: 20px;
}

.education-entry strong {
    display: block;
    font-weight: 700;
    color: var(--color-dark);
}

.education-entry a {
    color: var(--color-text-light);
    text-decoration: underline;
    text-decoration-color: var(--color-primary);
    text-underline-offset: 3px;
}

.education-section {
    margin-top: 30px;
    text-align: center;
}

.coding-profiles {
    margin-top: 40px;
}

.coding-profiles h3 {
    margin-top: 0;
    color: var(--color-dark);
}

.profile-links a {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background-color: var(--color-border);
    color: var(--color-text-light);
    border-radius: 50%;
    margin-right: 12px;
    font-size: 20px;
    font-weight: 700;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.profile-links a:hover {
    background-color: var(--color-primary);
    color: var(--color-white) !important;
}

/* =================================
   Services Page - Services Grid
   ================================= */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.service-item {
    text-align: center;
    padding: 30px;
    border: 1px solid var(--color-border);
    border-radius: 5px;
    transition: transform 0.3s ease, background-color 0.3s ease, color 0.3s ease;
}

.service-item:hover,
.service-item:active {
    transform: translateY(-5px);
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.service-item .icon {
    font-size: 48px;
    color: var(--color-dark);
    margin-bottom: 20px;
    transition: color 0.3s ease;
}

.service-item h3 {
    margin: 0 0 15px 0;
    font-size: 22px;
    transition: color 0.3s ease;
}

/* Add hover effect for service items */
.service-item:hover .icon,
.service-item:active .icon,
.service-item:hover h3,
.service-item:active h3,
.service-item:hover p,
.service-item:active p {
    color: var(--color-white);
}

.portfolio-link {
    text-decoration: none;
    color: inherit;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: 5px;
    aspect-ratio: 4 / 3;
    /* Enforce a consistent 4:3 aspect ratio */
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    /* Crop image to fit container without distortion */
    transition: transform 0.4s ease;
}

.portfolio-item:hover img,
.portfolio-link:active .portfolio-item img {
    transform: scale(1.1);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 121, 107, 0.85);
    /* Primary color with opacity */
    color: var(--color-white);
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    opacity: 0;
    transition: opacity 0.4s ease;
}

[data-theme="dark"] .portfolio-overlay {
    /* Ensure overlay text is always light */
    color: #ffffff;
}

.portfolio-item:hover .portfolio-overlay,
.portfolio-link:active .portfolio-overlay {
    opacity: 1;
}

.overlay-content h3 {
    margin: 0 0 5px 0;
    font-size: 22px;
    transform: translateY(10px);
    transition: transform 0.4s ease;
}

.overlay-content span {
    font-size: 14px;
    opacity: 0.8;
}

.portfolio-item:hover .overlay-content h3,
.portfolio-link:active .overlay-content h3 {
    transform: translateY(0);
}

/* =================================
   Footer
   ================================= */
.main-footer {
    background-color: var(--color-dark);
    color: rgba(255, 255, 255, 0.7);
    padding-top: 50px;
    font-size: 14px;
}

.footer-top {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
    padding-bottom: 40px;
}

.footer-col h4 {
    color: var(--color-white);
    font-size: 16px;
    text-transform: uppercase;
    margin: 0 0 20px 0;
    letter-spacing: 1px;
}

.footer-col p {
    line-height: 1.8;
    margin: 0;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease, padding-left 0.3s ease;
}

.footer-col ul a:hover {
    color: var(--color-white);
    padding-left: 5px;
}

[data-theme="dark"] .main-footer {
    background-color: #111827;
    /* Keep footer background dark */
    color: rgba(255, 255, 255, 0.7);
    /* Keep footer text light */
}

[data-theme="dark"] .footer-col h4 {
    color: #f9fafb;
    /* Use the light text color from dark theme */
}

[data-theme="dark"] .footer-col ul a,
[data-theme="dark"] .main-footer {
    color: rgba(255, 255, 255, 0.7);
    /* Keep footer text light */
}

[data-theme="dark"] .footer-col ul a:hover {
    color: #ffffff;
}

.social-links a {
    display: inline-block;
    color: var(--color-text-light);
    background-color: var(--color-border);
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    border-radius: 50%;
    margin-right: 10px;
    transition: background-color 0.3s ease;
}

[data-theme="dark"] .social-links a {
    color: var(--color-white);
    background-color: rgba(255, 255, 255, 0.05);
}

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

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
}

/* =================================
   Contact Form
   ================================= */
.contact-form {
    max-width: 800px;
    margin: 0 auto;
}

.form-row {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    flex: 1;
    min-width: 250px;
    /* Prevents fields from getting too squished before wrapping */
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    flex-basis: 100%;
    margin-bottom: 20px;
}

.form-group label {
    margin-bottom: 8px;
    font-weight: 700;
    font-size: 14px;
    color: var(--color-text-light);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-family: var(--font-family-primary);
    font-size: 16px;
    transition: border-color 0.3s ease;
}

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

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.contact-form .btn {
    width: 100%;
    padding: 15px;
    font-size: 16px;
    background-color: var(--color-dark);
    color: var(--color-white);
    border: 2px solid var(--color-dark);
}

[data-theme="dark"] .contact-form .btn {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.form-success-message {
    display: none;
    /* Hidden by default */
    background-color: #e0f2f1;
    /* Light Teal */
    color: #004d40;
    /* Dark Teal */
    border: 1px solid #b2dfdb;
    /* Medium Teal */
    padding: 15px;
    border-radius: 4px;
    text-align: center;
    margin-bottom: 20px;
}

[data-theme="dark"] .form-success-message {
    background-color: #004d40;
    color: #e0f2f1;
    border-color: #00796b;
}


/* =================================
   Responsive Styles
   ================================= */
@media (max-width: 992px) {

    /* --- Header & Mobile Navigation on smaller screens --- */
    .site-header {
        padding: 15px 0;
    }

    /* The mobile navigation starts as a hidden, full-screen overlay */
    .main-nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(20, 20, 20, 0.7);
        /* Even more transparent for better background visibility */
        -webkit-backdrop-filter: blur(10px);
        /* Frosted glass effect for Safari */
        backdrop-filter: blur(10px);
        /* Frosted glass effect */
        display: flex;
        justify-content: center;
        align-items: center;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.4s ease, visibility 0.4s ease;
        z-index: 100;
    }

    .main-nav ul {
        flex-direction: column;
        text-align: center;
    }

    .main-nav li {
        margin: 20px 0;
    }

    .main-nav a {
        color: var(--color-white);
        font-size: 20px;
    }

    /* --- Hamburger Menu Icon Styling --- */
    .nav-toggle-label {
        display: block;
        position: relative;
        width: 30px;
        height: 22px;
        cursor: pointer;
    }

    /* The three lines of the hamburger icon */
    .nav-toggle-label span,
    .nav-toggle-label span::before,
    .nav-toggle-label span::after {
        display: block;
        position: absolute;
        width: 100%;
        height: 3px;
        background-color: var(--color-dark);
        transition: all 0.3s ease;
    }

    .nav-toggle-label span::before,
    .nav-toggle-label span::after {
        content: '';
    }

    .nav-toggle-label span::before {
        top: -10px;
    }

    .nav-toggle-label span {
        top: 10px;
    }

    .nav-toggle-label span::after {
        top: 10px;
    }

    /* --- Toggle Animation Logic (CSS-only) --- */
    /* When the hidden checkbox is checked, show the navigation */
    .nav-toggle:checked~.main-nav {
        opacity: 1;
        visibility: visible;
    }

    /* Animate the hamburger icon into an "X" */
    .nav-toggle:checked~.nav-toggle-label span {
        background-color: transparent;
    }

    .nav-toggle:checked~.nav-toggle-label span::before {
        transform: rotate(45deg);
        top: 10px;
        background-color: var(--color-white);
    }

    .nav-toggle:checked~.nav-toggle-label span::after {
        transform: rotate(-45deg);
        top: 10px;
        background-color: var(--color-white);
    }

    /* Ensure hamburger icon is light in dark mode */
    [data-theme="dark"] .nav-toggle-label span,
    [data-theme="dark"] .nav-toggle-label span::before,
    [data-theme="dark"] .nav-toggle-label span::after {
        background-color: #f9fafb;
        /* Use light color for hamburger lines */
    }

    /* Ensure mobile nav text and close icon are always white, even in dark mode */
    [data-theme="dark"] .main-nav a {
        color: #ffffff;
    }

    [data-theme="dark"] .nav-toggle:checked~.nav-toggle-label span::before,
    [data-theme="dark"] .nav-toggle:checked~.nav-toggle-label span::after {
        background-color: #ffffff;
    }

    /* --- Hero Section Adjustments for Mobile --- */
    .hero h1 {
        font-size: 42px;
    }

    .hero p {
        font-size: 16px;
    }

    .hero br {
        display: none;
    }

    /* Remove forced line breaks on mobile */

    /* --- Form adjustments for mobile --- */
    .form-row {
        flex-direction: column;
        gap: 0;
    }

    .form-group {
        margin-bottom: 20px;
    }

    .content-section {
        padding: 60px 0;
    }
}

/* Ensure About section text stays left-aligned on small screens */
@media (max-width: 768px) {
    .about-me-content {
        /* If .about-me-content uses flex, force vertical stacking and left alignment */
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .about-me-left,
    .about-me-text {
        width: 100%;
        text-align: left;
        /* make sure contents are left-aligned */
    }

    .about-intro {
        text-align: left;
        margin-left: 0;
        /* remove any centering offset */
    }
}

/* Upscale hero text on larger tablets and desktops */
@media (min-width: 768px) {
    .hero h1 {
        font-size: 72px;
    }
}