/* Tuhin Patra - Premium Portfolio Styles */

:root {
    /* Color Palette - Premium Dark Theme */
    --bg-dark: #000000;
    --bg-card: rgba(20, 20, 22, 0.6);
    --bg-card-hover: rgba(30, 30, 34, 0.8);

    --text-main: #f5f5f7;
    /* Apple light text */
    --text-muted: #86868b;

    --accent-blue: #2997ff;
    /* Apple Blue */
    --accent-gradient: linear-gradient(135deg, #2997ff 0%, #a855f7 100%);

    --border-color: rgba(255, 255, 255, 0.1);
    --border-glow: rgba(255, 255, 255, 0.15);

    --glass-blur: 24px;

    /* Layout */
    --max-width: 1200px;
    --section-spacing: 120px;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Global */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

::selection {
    background-color: var(--accent-blue);
    color: #fff;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--text-main);
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
    display: inline-block;
}

p {
    color: var(--text-muted);
}

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

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

/* Utilities */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

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

.text-center {
    text-align: center;
}

.w-100 {
    width: 100%;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    letter-spacing: -0.03em;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-top: -2rem;
    margin-bottom: 3rem;
}

/* Grid System */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: 999px;
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-smooth);
    border: 1px solid transparent;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-primary {
    background-color: var(--text-main);
    color: var(--bg-dark);
}

.btn-primary:hover {
    transform: scale(1.02);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
    color: var(--bg-dark);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--border-glow);
}

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

.btn-outline:hover {
    background: var(--text-main);
    color: var(--bg-dark);
}

/* Cards & Glassmorphism */
.glass {
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--border-color);
}

.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 2.5rem;
    transition: all var(--transition-smooth);
}

.hover-lift:hover {
    transform: translateY(-5px);
    background: var(--bg-card-hover);
    border-color: var(--border-glow);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1rem 0;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
}

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

.nav-links .btn-outline {
    color: var(--text-main);
}

.nav-links .btn-outline:hover {
    color: var(--bg-dark);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    /* offset nav */
    position: relative;
    overflow: hidden;
}

/* Subtle background glow for hero */
.hero::before {
    content: '';
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(41, 151, 255, 0.15) 0%, rgba(0, 0, 0, 0) 70%);
    z-index: 0;
    pointer-events: none;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

.hero-headline {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-subheadline {
    font-size: 1.125rem;
    max-width: 500px;
    margin-bottom: 2.5rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
}

.hero-image-wrapper {
    position: relative;
    border-radius: 32px;
    overflow: hidden;
    aspect-ratio: 4/5;
    transform: perspective(1000px) rotateY(-5deg);
    transition: transform 0.5s ease;
}

.hero-image-wrapper:hover {
    transform: perspective(1000px) rotateY(0deg);
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 20%;
    /* Shifts focus up, effectively cropping bottom */
    filter: grayscale(20%) contrast(1.1);
}

.hero-image-glow {
    position: absolute;
    inset: 0;
    box-shadow: inset 0 0 50px rgba(0, 0, 0, 0.5);
    z-index: 1;
    pointer-events: none;
}

/* Credibility Bar */
.credibility {
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    background: rgba(20, 20, 22, 0.3);
}

.section-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    color: var(--text-muted);
}

.tags-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
}

.tag {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: color 0.3s ease;
}

.tag:hover {
    color: var(--text-main);
}

/* About Me */
.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-image-wrapper {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
}

.about-hero-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    margin-bottom: -10%;
    /* Crops the bottom of the image */
}

@media (max-width: 900px) {
    .about-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .about-image-wrapper {
        max-width: 500px;
        margin: 0 auto;
    }

    .quote-block {
        text-align: left;
    }
}

/* What I Do */
.wid-lead {
    font-size: 1.5rem;
    color: var(--text-main);
    margin-bottom: 2rem;
}

.clean-list {
    list-style: none;
    margin-bottom: 2rem;
}

.clean-list li {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-main);
}

.clean-list i {
    color: var(--accent-blue);
    font-size: 1.5rem;
}

.wid-summary {
    font-size: 1.125rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

/* Systems Cards */
.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    margin-top: 1.5rem;
}

.card-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

/* Projects (Automation) */
.project-card {
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.project-image {
    height: 200px;
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.workflow-mockup {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--accent-blue);
    box-shadow: 0 0 30px rgba(41, 151, 255, 0.2);
    border: 1px solid var(--border-glow);
}

.project-info {
    padding: 2rem;
    flex-grow: 1;
}

.tech-label {
    font-size: 0.75rem;
    color: var(--accent-blue);
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    display: block;
    margin-bottom: 0.5rem;
}

.project-info h4 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.project-info p {
    font-size: 0.9rem;
}

/* Tech Stack */
.stack-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.stack-category h4 {
    color: var(--text-main);
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tech {
    padding: 0.4rem 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.tech:hover {
    color: var(--text-main);
    border-color: var(--text-muted);
}

/* Insights & Why Me */
.dual-section .grid-2 {
    gap: 5rem;
}

.article-list {
    list-style: none;
}

.article-list li {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.article-list a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.125rem;
    font-weight: 500;
}

.article-list a i {
    opacity: 0;
    transform: translate(-10px, 10px);
    transition: all var(--transition-fast);
}

.article-list a:hover i {
    opacity: 1;
    transform: translate(0, 0);
}

.feature-list {
    list-style: none;
}

.feature-list li {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.feature-list i {
    font-size: 1.5rem;
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.05);
    padding: 0.75rem;
    border-radius: 12px;
    height: fit-content;
}

.feature-list strong {
    display: block;
    color: var(--text-main);
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

/* Contact */
.contact-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    padding: 4rem !important;
    /* Override standard glass-card padding */
}

.contact-text {
    font-size: 1.125rem;
    margin-bottom: 3rem;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.125rem;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--text-muted);
}

.contact-item:hover i {
    color: var(--text-main);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-main);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--border-glow);
    background: rgba(255, 255, 255, 0.05);
}

/* Footer */
.footer {
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
    margin-top: 4rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    font-size: 1.5rem;
    color: var(--text-muted);
}

.footer-links a:hover {
    color: var(--text-main);
}

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Initial Load Animations */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.fade-up {
    opacity: 0;
    animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.fade-in {
    opacity: 0;
    animation: fadeIn 1s ease forwards;
}

/* Responsive */
@media (max-width: 900px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }

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

    .hero-image-wrapper {
        max-width: 500px;
        margin: 0 auto;
    }

    .contact-box {
        grid-template-columns: 1fr;
        padding: 2.5rem !important;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        /* simple mobile nav approach for minimalism */
    }

    .section-title {
        font-size: 2rem;
    }

    .hero-headline {
        font-size: 2.5rem;
    }

    .dual-section .grid-2 {
        gap: 3rem;
    }
}