/* style.css for portkey.ca */

/* --- CSS Variables --- */
:root {
    --font-primary: 'Rajdhani', sans-serif;
    --font-secondary: 'Roboto', sans-serif;

    --color-bg-dark: #0D0D0D;
    --color-bg-medium: #1A1A1A;
    --color-bg-glass: rgba(25, 25, 35, 0.6); /* Darker, slightly purplish tint for glass */
    --color-glass-border: rgba(255, 255, 255, 0.1);

    --color-text-primary: #E0E0E0;
    --color-text-secondary: #A0A0A0;
    
    --color-accent-primary: #00CFE8; /* Vibrant Cyan/Blue */
    --color-accent-secondary: #A020F0; /* Electric Purple */
    --color-accent-success: #28a745;
    --color-accent-error: #dc3545;

    --header-height: 70px;
    --border-radius: 8px;
    --transition-speed: 0.3s;
    --container-width: 1200px;
    --container-padding: 0 20px;
}

/* --- Global Styles & Resets --- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-secondary);
    background-color: var(--color-bg-dark);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden; /* Prevent horizontal scroll */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Accessibility: Focus outline */
*:focus-visible {
    outline: 2px dashed var(--color-accent-primary);
    outline-offset: 2px;
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
    line-height: 1.2;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
    color: var(--color-text-secondary);
}

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

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

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

/* --- Layout & Container --- */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--container-padding);
}

.full-height-section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.content-section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}
.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: var(--color-accent-primary);
    margin: 0.5rem auto 0;
    border-radius: var(--border-radius);
}

/* --- Glassmorphism --- */
.glassmorphic {
    background: var(--color-bg-glass);
    border: 1px solid var(--color-glass-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px); /* Safari */
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2);
}

/* --- Header & Navigation --- */
#main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(13, 13, 13, 0.8); /* Slightly transparent dark bg */
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    transition: background-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
    border-bottom: 1px solid transparent; /* Initially transparent */
}

#main-header.scrolled {
    background-color: var(--color-bg-medium); /* Solid bg on scroll */
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--color-glass-border);
}

#main-header nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-family: var(--font-primary);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-text-primary);
}
.logo:hover .accent-text, .logo:focus .accent-text {
    color: var(--color-accent-secondary);
}

.nav-links {
    list-style: none;
    display: flex;
}

.nav-links li {
    margin-left: 2rem;
}

.nav-link {
    font-family: var(--font-secondary);
    font-weight: 500;
    font-size: 1rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0.5rem 0;
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent-primary);
    transition: width var(--transition-speed) ease;
}
.nav-link:hover::after, .nav-link:focus::after, .nav-link.active::after {
    width: 100%;
}
.nav-link.active, .nav-link:hover, .nav-link:focus {
    color: var(--color-text-primary);
}

.nav-toggle {
    display: none; /* Hidden on desktop */
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001; /* Above nav links on mobile */
}

.hamburger {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-text-primary);
    position: relative;
    transition: transform var(--transition-speed) ease, background-color var(--transition-speed) ease;
}
.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--color-text-primary);
    transition: transform var(--transition-speed) ease, top var(--transition-speed) ease, bottom var(--transition-speed) ease;
}
.hamburger::before { top: -8px; }
.hamburger::after { bottom: -8px; }

/* Mobile Nav Open State */
.nav-open .hamburger {
    background-color: transparent; /* Middle bar disappears */
}
.nav-open .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}
.nav-open .hamburger::after {
    transform: rotate(-45deg);
    bottom: 0;
}


/* --- Hero Section --- */
.hero-section {
    background: linear-gradient(rgba(13, 13, 13, 0.7), rgba(13, 13, 13, 0.9)), 
                url('https://via.placeholder.com/1920x1080/0D0D0D/1A1A1A?text=Futuristic+Background') no-repeat center center/cover;
    /* Replace placeholder with a real background image. 
       Suggestions: Abstract tech patterns, cityscape at night, circuit board aesthetics.
       Resources: Unsplash, Pexels, SVG Repo (for vector patterns) */
    text-align: center;
    padding-top: var(--header-height); /* Offset for fixed header */
}

.hero-content h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem); /* Responsive font size */
    margin-bottom: 1.5rem;
}

.hero-content .tagline {
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto 2rem;
}

.cta-button {
    display: inline-block;
    background-color: var(--color-accent-primary);
    color: var(--color-bg-dark);
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1.1rem;
    padding: 0.8rem 2rem;
    border-radius: var(--border-radius);
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: background-color var(--transition-speed) ease, transform var(--transition-speed) ease;
    box-shadow: 0 4px 15px rgba(0, 207, 232, 0.3);
}
.cta-button:hover, .cta-button:focus {
    background-color: var(--color-accent-secondary);
    color: var(--color-text-primary);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(160, 32, 240, 0.4);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
}
.scroll-indicator a {
    display: block;
    padding: 10px;
}
.scroll-indicator span {
    display: block;
    width: 20px;
    height: 20px;
    border-left: 2px solid var(--color-accent-primary);
    border-bottom: 2px solid var(--color-accent-primary);
    transform: rotate(-45deg);
    animation: bounce 2s infinite;
}
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0) rotate(-45deg); }
    40% { transform: translateY(-10px) rotate(-45deg); }
    60% { transform: translateY(-5px) rotate(-45deg); }
}

/* --- Capabilities Section --- */
.capabilities-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}
.capabilities-content p {
    font-size: 1.1rem;
}

/* --- Projects Showcase Section --- */
.filter-buttons {
    text-align: center;
    margin-bottom: 2.5rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
}

.filter-btn {
    background-color: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-glass-border);
    padding: 0.6rem 1.2rem;
    margin: 0 0.3rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-family: var(--font-secondary);
    font-weight: 500;
    transition: all var(--transition-speed) ease;
}
.filter-btn:hover, .filter-btn:focus {
    background-color: var(--color-accent-secondary);
    color: var(--color-text-primary);
    border-color: var(--color-accent-secondary);
}
.filter-btn.active {
    background-color: var(--color-accent-primary);
    color: var(--color-bg-dark);
    border-color: var(--color-accent-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--color-bg-glass);
    border: 1px solid var(--color-glass-border);
    backdrop-filter: blur(5px); /* Slightly less blur for cards */
    -webkit-backdrop-filter: blur(5px);
    border-radius: var(--border-radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
    cursor: pointer;
    opacity: 0; /* For animation */
    transform: translateY(20px); /* For animation */
}
.project-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.project-card:hover, .project-card:focus-within {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
    border-color: var(--color-accent-primary);
}
.project-card:focus-within { /* For keyboard navigation */
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 3px;
}


.project-card-thumbnail {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid var(--color-glass-border);
}

.project-card-content {
    padding: 1.5rem;
    flex-grow: 1; /* Allows content to fill space */
    display: flex;
    flex-direction: column;
}

.project-card-title {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    color: var(--color-text-primary);
}

.project-card-category {
    font-size: 0.8rem;
    color: var(--color-accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.project-card-description {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 1rem;
    flex-grow: 1; /* Pushes tech tags to bottom */
}

.project-card-tech {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: auto; /* Pushes to bottom */
}
.project-card-tech-tag {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
}
.project-card-placeholder {
    color: var(--color-text-secondary);
    text-align: center;
    padding: 2rem;
    grid-column: 1 / -1; /* Span full width if only item */
}

/* --- Skills Section --- */
.skills-cloud {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    padding: 2.5rem; /* More padding for glass effect */
}

.skill-tag {
    background-color: rgba(0, 207, 232, 0.1); /* Subtle accent bg */
    color: var(--color-accent-primary);
    padding: 0.6rem 1.2rem;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--color-accent-primary);
    transition: all var(--transition-speed) ease;
}
.skill-tag:hover {
    background-color: var(--color-accent-primary);
    color: var(--color-bg-dark);
    transform: scale(1.05);
}

/* --- Contact Section --- */
.contact-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}
.contact-email {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}
.contact-email a {
    font-weight: 500;
}

.contact-form {
    text-align: left;
    margin-top: 2rem;
}
.contact-form h3 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--color-text-primary);
}
.form-group {
    margin-bottom: 1.5rem;
}
.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}
.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--border-radius);
    color: var(--color-text-primary);
    font-family: var(--font-secondary);
    font-size: 1rem;
    transition: border-color var(--transition-speed) ease;
}
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 2px rgba(0, 207, 232, 0.3);
}
.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-note {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: 1.5rem;
}

.contact-form .cta-button {
    display: block;
    width: 100%;
    max-width: 250px;
    margin: 1rem auto 0;
}

#form-status {
    margin-top: 1rem;
    text-align: center;
    font-weight: 500;
}
#form-status.success { color: var(--color-accent-success); }
#form-status.error { color: var(--color-accent-error); }


/* --- Footer --- */
#main-footer {
    background-color: var(--color-bg-medium);
    color: var(--color-text-secondary);
    padding: 2rem 0;
    text-align: center;
    font-size: 0.9rem;
    border-top: 1px solid var(--color-glass-border);
}

/* --- Project Modal --- */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed) ease, visibility 0s var(--transition-speed) ease;
    padding: 20px;
}
.modal.open {
    opacity: 1;
    visibility: visible;
    transition-delay: 0s;
}
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1999;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed) ease, visibility 0s var(--transition-speed) ease;
}
.modal.open + .modal-overlay {
    opacity: 1;
    visibility: visible;
    transition-delay: 0s;
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 800px; /* Adjust as needed */
    max-height: 90vh;
    overflow-y: auto;
    padding: 2.5rem; /* More padding for modal */
    transform: scale(0.95) translateY(20px);
    transition: transform var(--transition-speed) ease;
}
.modal.open .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 2.5rem;
    font-weight: 300;
    color: var(--color-text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    line-height: 1;
    padding: 0.2rem;
}
.modal-close:hover, .modal-close:focus {
    color: var(--color-accent-primary);
}

.modal-main-image {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
    border: 1px solid var(--color-glass-border);
}

.modal-project-title {
    font-size: 2rem;
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
}
.modal-categories {
    font-size: 0.9rem;
    color: var(--color-accent-primary);
    margin-bottom: 0.5rem;
}
.modal-technologies {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.modal-technologies .tech-tag { /* Re-using project card tech tag style */
    background-color: rgba(255, 255, 255, 0.1);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
}

.modal-body h4 {
    font-size: 1.1rem;
    color: var(--color-text-primary);
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-glass-border);
    padding-bottom: 0.3rem;
}
.modal-body p {
    font-size: 1rem;
    color: var(--color-text-secondary);
}

.modal-image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 0.5rem;
    margin-top: 1.5rem;
}
.modal-gallery-img {
    width: 100%;
    height: 80px;
    object-fit: cover;
    border-radius: 4px;
    cursor: pointer;
    border: 1px solid var(--color-glass-border);
    transition: border-color var(--transition-speed) ease;
}
.modal-gallery-img:hover, .modal-gallery-img.active {
    border-color: var(--color-accent-primary);
}
.modal-links {
    margin-top: 2rem;
    text-align: right;
}
.cta-button-small { /* For modal links if needed */
    background-color: var(--color-accent-primary);
    color: var(--color-bg-dark);
    font-size: 0.9rem;
    padding: 0.6rem 1.2rem;
    border-radius: var(--border-radius);
    margin-left: 0.5rem;
}
.cta-button-small:hover, .cta-button-small:focus {
    background-color: var(--color-accent-secondary);
    color: var(--color-text-primary);
}


/* --- Animations --- */
.animate-on-scroll {
    opacity: 0;
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.animate-on-scroll.fade-in {
    transform: translateY(30px);
}
.animate-on-scroll.fade-in-up { /* Specific for hero */
    transform: translateY(50px);
}
.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsive Design --- */
@media (max-width: 992px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    .content-section { padding: 60px 0; }
}

@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }
    /* Mobile Navigation */
    .nav-toggle {
        display: block;
    }
    .nav-links {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: var(--color-bg-medium);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transform: translateX(100%);
        transition: transform var(--transition-speed) ease-in-out;
        padding-top: var(--header-height);
    }
    .nav-links.open {
        transform: translateX(0);
    }
    .nav-links li {
        margin: 1.5rem 0;
    }
    .nav-link {
        font-size: 1.2rem;
    }

    .hero-section {
        padding-top: var(--header-height); /* Ensure content below header */
    }
    .hero-content h1 {
        font-size: clamp(2rem, 8vw, 3rem);
    }
    .hero-content .tagline {
        font-size: clamp(0.9rem, 4vw, 1.2rem);
    }

    .projects-grid {
        grid-template-columns: 1fr; /* Single column on smaller tablets/mobile */
    }

    .modal-content {
        padding: 1.5rem;
    }
    .modal-project-title {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .filter-buttons {
        flex-direction: column;
        gap: 0.5rem;
    }
    .filter-btn {
        width: 100%;
        margin: 0.25rem 0;
    }
    .cta-button {
        padding: 0.7rem 1.5rem;
        font-size: 1rem;
    }
    .skills-cloud {
        padding: 1.5rem;
    }
    .skill-tag {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }
    .contact-form .cta-button {
        width: 100%;
    }
}