:root {
  --primary-blue: #4361ee;
  --secondary-purple: #3a0ca3;
  --accent-red: #b40000;
  --light-gray: #f8f9fa;
  --dark-text: #2d3748;
  --text-color: #8d8d8d5b;
  --dark-gray: #666;
}

/* --- استایل‌های پایه و ریست --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--dark-text);
  background-color: #f5f7fb;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
a {
    text-decoration: none !important;
}
/* --- هدر مدرن --- */
header {
  background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
  color: white;
  padding: 1.2rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 12px rgba(67, 97, 238, 0.2);
  transition: all 0.3s ease;
}

header.scrolled {
  padding: 0.8rem 0;
  background: var(--secondary-purple);
  box-shadow: 0 6px 16px rgba(67, 97, 238, 0.4);
}

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

header .logo {
  font-size: 1.8rem;
  font-weight: 700;
  text-decoration: none;
  color: white;
  transition: all 0.3s ease;
}

header .logo:hover {
  transform: scale(1.05);
}

header nav ul {
  display: flex;
  list-style: none;
}

header nav ul li {
  margin-left: 25px;
}

header nav ul li a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  font-size: 1.05rem;
  transition: all 0.3s ease;
  position: relative;
  padding: 5px 0;
}

header nav ul li a:hover,
header nav ul li a.active {
  color: var(--accent-red);
}

header nav ul li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-red);
  transition: width 0.3s ease;
}

header nav ul li a:hover::after {
  width: 100%;
}

/* --- هیرو سکشن (صفحه اصلی) --- */
.page-hero {
  background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
  color: white;
  padding: 120px 20px;
  text-align: center;
  margin-bottom: 60px;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 70%);
  transform: rotate(30deg);
}

.page-hero h1 {
  font-size: 3.5rem;
  margin-bottom: 20px;
  animation: fadeInDown 1s ease;
  text-shadow: 0 2px 10px rgba(0,0,0,0.2);
  position: relative;
  z-index: 2;
}

.page-hero p {
  font-size: 1.5rem;
  max-width: 850px;
  margin: 0 auto 40px;
  animation: fadeInUp 1s ease 0.2s forwards;
  opacity: 0;
  position: relative;
  z-index: 2;
}

/* --- دکمه‌ها --- */
.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  animation: fadeInUp 1s ease 0.4s forwards;
  opacity: 0;
  position: relative;
  z-index: 2;
}

.button {
  background: linear-gradient(to right, #4cc9f0, #007bff);
  color: white;
  padding: 14px 35px;
  border: none;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.4s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  text-decoration: none;
  display: inline-block;
  position: relative;
  overflow: hidden;
}

.button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: all 0.5s;
}

.button:hover::before {
  left: 0;
}

.button:hover {
  transform: translateY(-3px);
  box-shadow: 0 7px 20px rgba(0, 0, 0, 0.3);
  background: linear-gradient(to right, #007bff, #4cc9f0);
}

.button.secondary {
  background: linear-gradient(to right, #6c757d, #5a6268);
}

.button.secondary:hover {
  background: linear-gradient(to right, #5a6268, #4a5055);
}

.btn-primary {
  background: var(--primary-blue);
  color: white;
  border: none;
  padding: 12px 25px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 600;
  margin-top: 15px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  text-decoration: none;
  display: inline-block;
}

.btn-primary:hover {
  background: #1a3a6c;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

/* --- اسلایدر پروژه‌ها --- */
.featured-projects-slider {
  padding: 50px 0;
  background: #f8f9fa;
}

.slider-container {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.slider {
  position: relative;
  width: 100%;
  height: 70vh;
  overflow: hidden;
  border-radius: 16px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
}

.slide {
  position: absolute;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.7s ease-in-out;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 50px;
  background-size: cover;
  background-position: center;
}

.slide.active {
  opacity: 1;
  z-index: 2;
}

.slide-content {
  max-width: 800px;
  padding: 40px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 20px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(10px);
  text-align: center;
}

.slide-content h2 {
  font-size: 2.5rem;
  margin-bottom: 15px;
  color: var(--primary-blue);
}

.slide-content p {
  font-size: 1.2rem;
  margin-bottom: 25px;
  color: #555;
}

.slider-controls {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  z-index: 10;
  width: 100%;
}

.slider-prev, .slider-next {
  background: white;
  border: none;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  font-size: 1.2rem;
  color: var(--primary-blue);
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
  z-index: 10;
}

.slider-prev:hover, .slider-next:hover {
  background: var(--primary-blue);
  color: white;
}

.slider-dots {
  display: flex;
  gap: 10px;
}

.slider-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  cursor: pointer;
  border: 2px solid white;
}

.slider-dot.active {
  background: var(--accent-red);
  transform: scale(1.2);
}

/* --- بخش خدمات (Features) --- */
.feature-section {
  padding: 80px 0;
  background: #f8f9fa;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.feature-item {
  background: white;
  border-radius: 16px;
  padding: 40px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.feature-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.feature-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-blue), var(--accent-red));
}

.icon-wrapper {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 25px;
  box-shadow: 0 5px 15px rgba(67, 97, 238, 0.3);
}

.icon-wrapper .icon {
  font-size: 2.5rem;
  color: white;
}

.feature-item h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--primary-blue);
}

.feature-item p {
  color: var(--dark-gray);
}

/* --- بخش هوش مصنوعی --- */
.ai-section {
  padding: 100px 0;
  background: linear-gradient(135deg, #f0f4ff, #e6e9ff);
}

.ai-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.ai-text h2 {
  font-size: 2.5rem;
  margin-bottom: 25px;
  color: var(--primary-blue);
}

.ai-stats {
  display: flex;
  justify-content: space-between;
  margin: 30px 0;
}

.stat {
  text-align: center;
}

.stat h3 {
  font-size: 2.2rem;
  color: var(--primary-blue);
}

.ai-image {
  position: relative;
  height: 400px;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
}

.ai-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --- گرید پروژه‌ها (Projects Grid) --- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  padding: 40px 0;
}

.project-card {
  background-color: white;
  border-radius: 12px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.08);
  padding: 20px;
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid #eee;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 25px rgba(0,0,0,0.15);
}

.project-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 15px;
}

.project-card h3 {
  color: var(--primary-blue);
  font-size: 1.5rem;
  margin-bottom: 10px;
}

/* --- بخش نظرات مشتریان --- */
.testimonials-section {
  padding: 80px 0;
  background: #fff;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.testimonial {
  background: var(--light-gray);
  border-radius: 16px;
  padding: 30px;
  border-right: 5px solid var(--primary-blue);
}

.testimonial-content p {
  font-style: italic;
  margin-bottom: 20px;
  color: #555;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 15px;
}

.author-image {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: #ccc; /* جایگزین عکس */
}

/* --- چرا ما --- */
.why-us-section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  font-size: 2.2rem;
  margin-bottom: 50px;
  color: var(--primary-blue);
}

.why-us-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.why-us-item {
  text-align: center;
  padding: 30px;
  background: white;
  border-radius: 12px;
  transition: transform 0.3s;
}

.why-us-item:hover {
  transform: translateY(-5px);
}

.why-us-item .icon {
  font-size: 2.5rem;
  color: var(--primary-blue);
  margin-bottom: 15px;
}

/* --- فوتر (اصلاح شده) --- */
footer {
  background: linear-gradient(135deg, #1a1a2e, #16213e);
  color: white;
  padding: 60px 0 20px;
  margin-top: 60px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-logo h2 {
  color: var(--accent-red);
  margin-bottom: 15px;
}

.footer-links h3, .footer-contact h3 {
  color: var(--primary-blue);
  margin-bottom: 20px;
  border-bottom: 2px solid var(--accent-red);
  display: inline-block;
  padding-bottom: 5px;
}

.footer-links ul li {
  margin-bottom: 10px;
}


.footer-links ul li a {
  color: #ddd;
  text-decoration: none;
  transition: none; 
}


.footer-links ul li a:hover {
  color: #ddd; 
  text-decoration: none;
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  color: #aaa;
}

/* --- مودال --- */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.8);
  z-index: 2000;
  justify-content: center;
  align-items: center;
}

.modal-content {
  background: white;
  padding: 30px;
  border-radius: 10px;
  width: 90%;
  max-width: 600px;
  position: relative;
  animation: slideUp 0.4s ease;
}

.close-modal {
  position: absolute;
  top: 15px;
  right: 20px;
  font-size: 30px;
  cursor: pointer;
  color: #555;
}

/* --- انیمیشن‌ها --- */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { transform: translateY(50px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* --- رسپانسیو (موبایل) --- */
@media (max-width: 992px) {
  .ai-content {
    grid-template-columns: 1fr;
  }
  .page-hero h1 { font-size: 2.5rem; }
  .slider { height: 50vh; }
}

@media (max-width: 768px) {
  header .container {
    flex-direction: column;
  }
  
  header nav ul {
    margin-top: 15px;
    flex-wrap: wrap;
    justify-content: center;
  }
  
  header nav ul li {
    margin: 5px 10px;
  }

  .slide-content {
    padding: 20px;
    width: 90%;
  }

  .slide-content h2 { font-size: 1.5rem; }
  
  .ai-stats {
    flex-direction: column;
    gap: 20px;
  }
}
/* --- استایل‌های صفحه جزئیات پروژه --- */
.project-detail-hero {
    position: relative;
    height: 60vh;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
    margin-bottom: 50px;
}

.project-detail-hero .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6); /* تاری کردن تصویر پس‌زمینه */
    z-index: 1;
}

.project-detail-hero .content-wrapper {
    position: relative;
    z-index: 2;
}

.project-category {
    display: inline-block;
    background: var(--accent-red);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: bold;
    margin-bottom: 15px;
    text-transform: uppercase;
}

.project-detail-hero h1 {
    font-size: 3rem;
    margin-bottom: 30px;
    text-shadow: 0 2px 10px rgba(255, 255, 255, 0.5);
}

.project-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.project-detail-content {
    padding-bottom: 80px;
}

.detail-grid {
    display: grid;
    grid-template-columns: 2fr 1fr; /* 2 بخش متن، 1 بخش سایدبار */
    gap: 50px;
}

.main-info h2 {
    color: var(--primary-blue);
    font-size: 2rem;
    margin-bottom: 20px;
    border-bottom: 2px solid #eee;
    padding-bottom: 10px;
}

.main-info p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #555;
    text-align: justify;
}

.mt-4 {
    margin-top: 40px;
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    position: relative;
    padding-right: 25px;
    margin-bottom: 10px;
    font-size: 1.05rem;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    right: 0;
    color: var(--accent-red);
    font-weight: bold;
}

/* --- استایل سایدبار --- */
.side-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.info-card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    border: 1px solid #f0f0f0;
}

.info-card h3 {
    color: var(--primary-blue);
    font-size: 1.3rem;
    margin-bottom: 20px;
    border-bottom: 2px solid #f0f0f0;
    padding-bottom: 10px;
}

.info-card ul {
    list-style: none;
}

.info-card ul li {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
    border-bottom: 1px dashed #eee;
    padding-bottom: 5px;
}

.info-card .label {
    color: #777;
    font-weight: 500;
}

.info-card .value {
    color: #333;
    font-weight: bold;
}

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

.tech-tags .tag {
    background: #eef2ff;
    color: var(--primary-blue);
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* ریسپانسیو برای موبایل */
@media (max-width: 768px) {
    .detail-grid {
        grid-template-columns: 1fr;
    }
    
    .project-detail-hero h1 {
        font-size: 2rem;
    }
    
    .project-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .project-actions .button {
        width: 100%;
        text-align: center;
    }
}

.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.5); z-index: 1000;
    display: none; justify-content: center; align-items: center;
    backdrop-filter: blur(5px);
}
.modal-content {
    background: white; width: 90%; max-width: 500px;
    border-radius: 16px; padding: 25px;
    box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
    position: relative; max-height: 80vh; overflow-y: auto;
    animation: slideUp 0.3s ease;
}
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.comment-list { margin-top: 20px; border-top: 1px solid #eee; padding-top: 15px; }
.comment-item { background: #f9fafb; padding: 10px; border-radius: 8px; margin-bottom: 10px; font-size: 0.9rem; }
.comment-header { display: flex; justify-content: space-between; font-weight: bold; font-size: 0.8rem; color: #6b7280; margin-bottom: 5px; }

.btn-comment {
    background: #eff6ff; color: var(--primary-blue);
    padding: 5px 12px; border-radius: 20px; text-decoration: none;
    font-size: 0.85rem; display: inline-flex; align-items: center; gap: 5px;
    border: 1px solid #dbeafe; transition: 0.2s;
}
.btn-comment:hover { background: #dbeafe; }

.comment-form textarea { width: 100%; padding: 10px; border: 1px solid #ddd; border-radius: 8px; margin-bottom: 10px; resize: vertical; font-family: inherit; }
.btn-submit { background: var(--primary-blue); color: white; border: none; padding: 8px 16px; border-radius: 8px; cursor: pointer; }

/* --- استایل‌های صفحه تماس با ما --- */
.contact-form-section {
    padding: 60px 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.contact-form .form-group {
    margin-bottom: 25px;
}

.contact-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark-text);
    font-size: 1rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--primary-blue);
    outline: none;
    box-shadow: 0 0 0 4px rgba(67, 97, 238, 0.1);
}

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

.contact-form .button {
    width: 100%;
    padding: 14px;
    font-size: 1.1rem;
    margin-top: 10px;
}

.contact-info {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    color: white;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.contact-info h2 {
    font-size: 2rem;
    margin-bottom: 25px;
    color: white;
    border-bottom: 2px solid rgba(255, 255, 255, 0.3);
    padding-bottom: 15px;
}

.contact-info p {
    margin-bottom: 15px;
    font-size: 1.05rem;
    line-height: 1.8;
}

.contact-info strong {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 700;
}

.social-links {
    margin-top: 30px;
    display: flex;
    gap: 15px;
}

.social-links a {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 500;
}

.social-links a:hover {
    background: white;
    color: var(--primary-blue);
    transform: translateY(-3px);
}

.success-message {
    background: #dcfce7;
    color: #166534;
    padding: 15px 20px;
    border-radius: 10px;
    margin-bottom: 25px;
    border: 1px solid #bbf7d0;
    font-weight: 500;
}

.error-message {
    background: #fee2e2;
    color: #991b1b;
    padding: 15px 20px;
    border-radius: 10px;
    margin-bottom: 25px;
    border: 1px solid #fecaca;
    font-weight: 500;
}

/* ریسپانسیو برای موبایل */
@media (max-width: 768px) {
    .contact-form-section {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 30px 0;
    }
    
    .contact-form,
    .contact-info {
        padding: 25px;
    }
}

/* --- استایل‌های صفحه درباره ما --- */
.about-content {
    padding: 60px 0;
    max-width: 900px;
    margin: 0 auto;
}

.about-content h2 {
    color: var(--primary-blue);
    font-size: 2rem;
    margin: 40px 0 20px;
    border-bottom: 3px solid var(--accent-red);
    padding-bottom: 10px;
    display: inline-block;
}

.about-content p {
    font-size: 1.1rem;
    line-height: 1.9;
    color: #555;
    text-align: justify;
    margin-bottom: 20px;
}

.values-list {
    list-style: none;
    padding: 0;
    margin: 30px 0;
}

.values-list li {
    background: white;
    padding: 20px;
    margin-bottom: 15px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
    font-size: 1.05rem;
    transition: all 0.3s ease;
}

.values-list li:hover {
    transform: translateX(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.team-members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 30px 0;
}

.fade-in-on-scroll {
    opacity: 1;
    animation: fadeInUp 0.8s ease;
}