/* Modern Light Theme IT Portfolio - Simplified */
:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --accent-color: #0284c7;
  --accent-hover: #0369a1;
  --header-height: 80px;
  --container-width: 1200px;
  --border-radius: 12px;
  --transition: all 0.2s ease;
  --card-bg: #ffffff;
  --card-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --card-hover-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-secondary); /* Light gray background for contrast with white cards */
  color: var(--text-primary);
  line-height: 1.5;
}

/* Typography */
h1 {
  font-size: 2.5rem;
  color: var(--text-primary);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

p {
  color: var(--text-secondary);
  font-size: 1rem;
}

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

/* Layout */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95); /* More opaque */
  backdrop-filter: blur(8px);
  z-index: 1000;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  display: flex;
  align-items: center;
}

header .container {
    display: flex; /* Ensure flex behavior inside header container */
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

nav {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.nav-links {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin: 0;
    padding: 0;
}

.nav-links li a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.4rem 0.85rem;
    border-radius: 6px;
    position: relative;
    overflow: hidden;
    transition: color 0.2s ease, background 0.2s ease;
}

.nav-links li a:hover {
    color: var(--accent-color);
    background: rgba(2, 132, 199, 0.07);
}

.nav-links li a.active {
    color: var(--accent-color);
    font-weight: 600;
    background: rgba(2, 132, 199, 0.08);
}

/* Ripple effect on click */
.nav-links li a .nav-ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(2, 132, 199, 0.25);
    transform: scale(0);
    animation: nav-ripple-anim 0.45s linear;
    pointer-events: none;
}

@keyframes nav-ripple-anim {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

.nav-links li a.nav-cta {
    background: var(--accent-color);
    color: #fff;
    padding: 0.45rem 1rem;
    border-radius: 8px;
    font-weight: 600;
}

.nav-links li a.nav-cta:hover {
    background: var(--accent-hover);
    color: #fff;
}

.nav-links li a.nav-cta:active {
    transform: scale(0.95);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

@media (max-width: 720px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        padding: 1rem 1.5rem;
        gap: 0.25rem;
        border-bottom: 1px solid rgba(0,0,0,0.08);
        box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    }

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

    .nav-links li a {
        display: block;
        padding: 0.6rem 0.75rem;
    }

    .nav-links li a.nav-cta {
        text-align: center;
        margin-top: 0.25rem;
    }
}

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

.cta-button {
  display: inline-block;
  padding: 0.6rem 1.5rem;
  background: var(--accent-color);
  color: #ffffff;
  border-radius: 6px; /* Slightly squarer for professional look */
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
}

.cta-button:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

/* Filter Section */
.filter-container {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    background: transparent;
    border: 1px solid rgba(0,0,0,0.1);
    padding: 0.5rem 1.2rem;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.filter-btn:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
}

.filter-btn.active {
    background: var(--accent-color);
    color: #ffffff;
    border-color: var(--accent-color);
}

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

.project-card {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: all 0.4s ease;
  border: 1px solid rgba(0,0,0,0.03);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-hover-shadow);
  border-color: rgba(2, 132, 199, 0.2);
}

/* Image Placeholder & Overlay */
.project-image-placeholder {
  height: 180px;
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid rgba(0,0,0,0.03);
  position: relative; /* For overlay positioning */
  overflow: hidden;
}

.project-image-placeholder i {
    font-size: 3.5rem;
    color: var(--accent-color);
    opacity: 0.7;
    transition: var(--transition);
    position: relative;
    z-index: 1;
}

.project-image-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 0;
    transition: transform 0.4s ease;
}

/* Hover Effect: Overlay */
.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(2, 132, 199, 0.9); /* Accent color with opacity */
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
    backdrop-filter: blur(2px);
    z-index: 10;
}

.project-card:hover .card-overlay {
    opacity: 1;
}

.project-card:hover .project-image-placeholder i {
    transform: scale(1.15);
    opacity: 1;
}

.project-card:hover .project-image-placeholder img {
    transform: scale(1.05); /* Slight zoom for image on hover */
}

.view-btn {
    color: #ffffff;
    border: 1px solid #ffffff;
    padding: 0.6rem 1.5rem;
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.project-card:hover .view-btn {
    transform: translateY(0);
}

.view-btn:hover {
    background: #ffffff;
    color: var(--accent-color);
}

.project-content {
  padding: 1.5rem;
  flex-grow: 1; /* Pushes content effectively */
}

.project-tags {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.project-tag {
  font-size: 0.75rem;
  color: var(--accent-color);
  background: rgba(2, 132, 199, 0.08);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-weight: 500;
}

/* Inquiry Form */
.inquiry-section {
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 1px solid rgba(0,0,0,0.05);
}

.inquiry-card {
    display: grid;
    grid-template-columns: 1fr 1.6fr;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--card-hover-shadow);
    max-width: 950px;
    margin: 0 auto;
}

.inquiry-info {
    background: linear-gradient(160deg, #0284c7 0%, #0369a1 100%);
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1.5rem;
}

.inquiry-info h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: #fff;
    margin: 0;
}

.inquiry-info > p {
    color: rgba(255,255,255,0.85);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

.inquiry-contact-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 0.5rem;
}

.inquiry-contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: rgba(255,255,255,0.9);
    font-size: 0.9rem;
}

.inquiry-contact-item i {
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.15);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    flex-shrink: 0;
}

.inquiry-form-area {
    background: #fff;
    padding: 2.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-bottom: 1rem;
}

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

.form-group label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.form-group input,
.form-group textarea {
    padding: 0.65rem 0.9rem;
    border: 1px solid rgba(0,0,0,0.12);
    border-radius: 8px;
    font-size: 0.9rem;
    font-family: inherit;
    color: var(--text-primary);
    background: #fafafa;
    transition: var(--transition);
    outline: none;
    resize: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent-color);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(2,132,199,0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: #b0bec5; }

.submit-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.75rem 2rem;
    background: var(--accent-color);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.submit-btn:hover:not(:disabled) {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.submit-btn:disabled { opacity: 0.7; cursor: not-allowed; }

.form-message {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
}

.form-message.success { background: #f0fdf4; color: #16a34a; border: 1px solid #bbf7d0; }
.form-message.error   { background: #fff1f2; color: #e11d48; border: 1px solid #fecdd3; }

@media (max-width: 768px) {
    .inquiry-card { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .inquiry-form-area { padding: 1.5rem; }
    .inquiry-info { padding: 2rem 1.5rem; }
}

/* Tech Stack Section */
.tech-stack {
    text-align: center;
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 1px solid rgba(0,0,0,0.05);
}

.tech-stack h3 {
    color: var(--text-secondary);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1.75rem;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 1rem;
}

.tech-card {
    background: var(--card-bg);
    border-radius: 10px;
    padding: 1.1rem 0.75rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(0,0,0,0.04);
    transition: var(--transition);
    cursor: default;
}

.tech-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--card-hover-shadow);
    border-color: rgba(2,132,199,0.2);
}

.tech-card i {
    font-size: 1.75rem;
    color: var(--accent-color);
}

.tech-svg-icon {
    width: 1.75rem;
    height: 1.75rem;
    object-fit: contain;
}

.tech-card span {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* Static Websites Section */
.static-section {
    margin-top: 4rem;
    padding-top: 3rem;
}

.static-section-header {
    text-align: center;
    margin-bottom: 2rem;
}

.static-section-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.static-filter {
    margin-bottom: 2rem;
}

.static-filter-btn {
    background: transparent;
    border: 1px solid rgba(0,0,0,0.1);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.static-filter-btn:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
}

.static-filter-btn.active {
    background: var(--accent-color);
    color: #ffffff;
    border-color: var(--accent-color);
}

.static-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.static-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(0,0,0,0.03);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
}

.static-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-hover-shadow);
    border-color: rgba(2, 132, 199, 0.2);
}

.static-card::before {
    content: '';
    display: block;
    height: 3px;
    background: var(--accent-color);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.static-card:hover::before {
    opacity: 1;
}

.static-card-header {
    padding: 1.5rem 1.25rem;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100px;
    border-bottom: 1px solid rgba(0,0,0,0.06);
}

.static-favicon {
    max-width: 140px;
    max-height: 64px;
    width: auto;
    height: auto;
    object-fit: contain;
}

.static-card-body {
    padding: 1rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.static-card-body h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.35rem;
}

.static-card-body p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
    flex-grow: 1;
}


@media (max-width: 900px) {
    .static-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .static-grid {
        grid-template-columns: 1fr;
    }
}

/* AI Tools Section */
.ai-section {
    padding: 4rem 0;
}

.ai-section-header {
    margin-bottom: 2rem;
}

.ai-section-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.ai-section-header p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.ai-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.ai-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    border: 1px solid rgba(0, 0, 0, 0.06);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.ai-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.ai-card-logo {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    background: #f8fafc;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
}

.ai-logo-img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.ai-card-logo--letter {
    background: #6366f1;
}

.ai-logo-letter {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    line-height: 1;
}

.ai-card-info h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.ai-card-info p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin: 0;
}

@media (max-width: 900px) {
    .ai-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .ai-grid {
        grid-template-columns: 1fr;
    }
}

/* Footer */
footer {
    background: #1e293b;
    color: #94a3b8;
    padding: 3rem 0 1.5rem;
    margin-top: 4rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.8fr 1fr 1fr;
    gap: 2.5rem;
    padding-bottom: 2.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.07);
}

.footer-brand .logo {
    font-size: 1.3rem;
    color: #fff;
    margin-bottom: 0.75rem;
    display: block;
}

.footer-brand .logo span {
    color: #38bdf8;
}

.footer-brand p {
    font-size: 0.875rem;
    line-height: 1.6;
    color: #94a3b8;
}

.footer-col h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-col ul li a {
    font-size: 0.875rem;
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-col ul li a:hover {
    color: #38bdf8;
}

.footer-bottom {
    padding-top: 1.5rem;
    text-align: center;
    font-size: 0.82rem;
    color: #64748b;
}

@media (max-width: 720px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .footer-brand {
        grid-column: 1 / -1;
    }
}

/* Responsive */
@media (max-width: 600px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin: 2rem 0 1rem;
}

.page-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 6px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}

.page-btn:hover:not(.disabled):not(.active) {
    color: var(--accent-color);
    background: rgba(2, 132, 199, 0.07);
}

.page-btn.active {
    color: var(--accent-color);
    font-weight: 600;
    background: rgba(2, 132, 199, 0.08);
}

.page-btn.disabled {
    opacity: 0.35;
    cursor: default;
    pointer-events: none;
}

/* Footer */
.site-footer {
    text-align: center;
    padding: 1.5rem 2rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
}