/* Architecture Studio - Deep Blue & Amber Theme */

/* CSS Custom Properties */
:root {
  --primary-color: #2B4C8C;
  --secondary-color: #E67E22;
  --primary-dark: #1e3563;
  --primary-light: #4f6fae;
  --secondary-dark: #c0611b;
  --secondary-light: #f39c42;
  --white: #ffffff;
  --light-gray: #f8f9fa;
  --medium-gray: #6c757d;
  --dark-gray: #343a40;
  --text-dark: #212529;
  --text-light: rgba(255, 255, 255, 0.9);
  --shadow-light: 0 2px 4px rgba(43, 76, 140, 0.1);
  --shadow-medium: 0 4px 6px rgba(43, 76, 140, 0.15);
  --shadow-heavy: 0 10px 25px rgba(43, 76, 140, 0.2);
  --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-dark) 100%);
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Playfair Display', Georgia, serif;
  --transition-fast: 0.2s ease-in-out;
  --transition-medium: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
  --border-radius: 8px;
  --border-radius-lg: 12px;
}

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

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

body {
  font-family: var(--font-primary);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

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

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
}

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
}

p {
  margin-bottom: 1rem;
  font-size: 1.1rem;
  color: var(--text-dark);
}

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

a:hover {
  color: var(--secondary-color);
  text-decoration: none;
}

/* Bootstrap Overrides */
.btn {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: var(--border-radius);
  padding: 0.75rem 2rem;
  border: 2px solid transparent;
  transition: var(--transition-medium);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: var(--transition-medium);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--gradient-primary);
  border-color: var(--primary-color);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn-secondary {
  background: var(--gradient-secondary);
  border-color: var(--secondary-color);
  color: var(--white);
}

.btn-secondary:hover {
  background: var(--secondary-dark);
  border-color: var(--secondary-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn-outline-primary {
  color: var(--primary-color);
  border-color: var(--primary-color);
  background: transparent;
}

.btn-outline-primary:hover {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--white);
}

.btn-outline-secondary {
  color: var(--secondary-color);
  border-color: var(--secondary-color);
  background: transparent;
}

.btn-outline-secondary:hover {
  background: var(--secondary-color);
  border-color: var(--secondary-color);
  color: var(--white);
}

/* Card Overrides */
.card {
  border: none;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-light);
  transition: var(--transition-medium);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-heavy);
}

.card-header {
  background: var(--gradient-primary);
  color: var(--white);
  border: none;
  padding: 1.5rem;
}

.card-body {
  padding: 2rem;
}

/* Navigation */
.navbar {
  background: rgba(43, 76, 140, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-medium);
  transition: var(--transition-medium);
  padding: 1rem 0;
}

.navbar.scrolled {
  background: var(--primary-color);
  padding: 0.5rem 0;
}

.navbar-brand {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.navbar-brand:hover {
  color: var(--secondary-color);
}

.navbar-nav .nav-link {
  color: var(--text-light);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0.5rem 1rem;
  margin: 0 0.25rem;
  border-radius: var(--border-radius);
  transition: var(--transition-fast);
  position: relative;
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--secondary-color);
  transition: var(--transition-fast);
  transform: translateX(-50%);
}

.navbar-nav .nav-link:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
  width: 80%;
}

.navbar-nav .nav-link.active {
  color: var(--white);
}

.navbar-toggler {
  border: none;
  padding: 0.25rem 0.5rem;
}

.navbar-toggler:focus {
  box-shadow: none;
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.9%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Hero Section */
.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--white);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  opacity: 0.8;
  z-index: 1;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 2rem;
}

.hero h1 {
  color: var(--white);
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeInUp 1s ease-out 0.5s forwards;
}

.hero p {
  font-size: 1.3rem;
  margin-bottom: 2rem;
  color: var(--text-light);
  opacity: 0;
  animation: fadeInUp 1s ease-out 0.7s forwards;
}

.hero .btn {
  opacity: 0;
  animation: fadeInUp 1s ease-out 0.9s forwards;
  margin: 0 0.5rem;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

/* Section Styles */
section {
  padding: 5rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--secondary-color);
  border-radius: 2px;
}

.section-header p {
  font-size: 1.2rem;
  color: var(--medium-gray);
  max-width: 600px;
  margin: 1.5rem auto 0;
}

/* About Section */
.about {
  background: var(--light-gray);
}

.about-content {
  display: flex;
  align-items: center;
  gap: 3rem;
}

.about-text {
  flex: 1;
}

.about-image {
  flex: 1;
}

.about-image img {
  width: 100%;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-medium);
}

/* Services Section */
.service-card {
  text-align: center;
  padding: 2.5rem;
  height: 100%;
  position: relative;
}

.service-card .icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  transition: var(--transition-medium);
}

.service-card .icon i {
  font-size: 2rem;
  color: var(--white);
}

.service-card:hover .icon {
  transform: scale(1.1);
}

.service-card h4 {
  margin-bottom: 1rem;
}

/* Portfolio Section */
.portfolio {
  background: var(--light-gray);
}

.portfolio-filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}

.filter-btn {
  background: transparent;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  padding: 0.5rem 1.5rem;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition-fast);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

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

.portfolio-item {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
}

.portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-medium);
}

.portfolio-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(43, 76, 140, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition-medium);
}

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

.portfolio-item:hover img {
  transform: scale(1.05);
}

.portfolio-overlay-content {
  text-align: center;
  color: var(--white);
}

.portfolio-overlay h5 {
  color: var(--white);
  margin-bottom: 0.5rem;
}

.portfolio-overlay p {
  color: var(--text-light);
  margin-bottom: 1rem;
}

/* Team Section */
.team-card {
  text-align: center;
  position: relative;
  overflow: hidden;
  border-radius: var(--border-radius-lg);
}

.team-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  transition: var(--transition-medium);
}

.team-card:hover img {
  transform: scale(1.05);
}

.team-info {
  padding: 1.5rem;
}

.team-info h5 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.team-info .position {
  color: var(--secondary-color);
  font-weight: 600;
  margin-bottom: 1rem;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 1rem;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--primary-color);
  color: var(--white);
  border-radius: 50%;
  transition: var(--transition-fast);
}

.social-links a:hover {
  background: var(--secondary-color);
  transform: translateY(-2px);
}

/* Contact Section */
.contact {
  background: var(--light-gray);
}

.contact-info {
  background: var(--white);
  padding: 2.5rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-light);
  height: 100%;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 2rem;
}

.contact-item:last-child {
  margin-bottom: 0;
}

.contact-item .icon {
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 1.5rem;
  flex-shrink: 0;
}

.contact-item .icon i {
  font-size: 1.2rem;
  color: var(--white);
}

.contact-item .content h6 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.contact-item .content p {
  margin: 0;
  color: var(--medium-gray);
}

/* Form Styles */
.form-control {
  border: 2px solid #e9ecef;
  border-radius: var(--border-radius);
  padding: 0.75rem 1rem;
  font-size: 1rem;
  transition: var(--transition-fast);
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(43, 76, 140, 0.15);
}

.form-label {
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.form-floating .form-control {
  height: calc(3.5rem + 2px);
  line-height: 1.25;
}

.form-floating label {
  color: var(--medium-gray);
}

.form-floating .form-control:focus ~ label,
.form-floating .form-control:not(:placeholder-shown) ~ label {
  color: var(--primary-color);
}

.is-valid {
  border-color: #198754;
}

.is-invalid {
  border-color: #dc3545;
}

.invalid-feedback {
  color: #dc3545;
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

.valid-feedback {
  color: #198754;
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

/* Footer */
.footer {
  background: var(--primary-color);
  color: var(--text-light);
  padding: 3rem 0 1rem;
}

.footer h5 {
  color: var(--white);
  margin-bottom: 1.5rem;
}

.footer p {
  color: var(--text-light);
  line-height: 1.7;
}

.footer a {
  color: var(--text-light);
  transition: var(--transition-fast);
}

.footer a:hover {
  color: var(--secondary-color);
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 2rem;
  padding-top: 2rem;
  text-align: center;
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: var(--gradient-secondary);
  color: var(--white);
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-medium);
  z-index: 1000;
  box-shadow: var(--shadow-medium);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-heavy);
}

/* Responsive Design */
@media (max-width: 991.98px) {
  .navbar-nav {
    background: rgba(43, 76, 140, 0.95);
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-top: 1rem;
  }
  
  .hero {
    height: 80vh;
  }
  
  .about-content {
    flex-direction: column;
    text-align: center;
  }
  
  section {
    padding: 3rem 0;
  }
  
  .portfolio-filters {
    justify-content: flex-start;
  }
}

@media (max-width: 767.98px) {
  .hero-content {
    padding: 1rem;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero p {
    font-size: 1.1rem;
  }
  
  .service-card {
    margin-bottom: 2rem;
  }
  
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-item {
    text-align: center;
    flex-direction: column;
    align-items: center;
  }
  
  .contact-item .icon {
    margin-right: 0;
    margin-bottom: 1rem;
  }
  
  .back-to-top {
    bottom: 1rem;
    right: 1rem;
  }
}

@media (max-width: 575.98px) {
  .hero {
    height: 70vh;
  }
  
  .btn {
    padding: 0.5rem 1.5rem;
    margin: 0.25rem;
  }
  
  .portfolio-filters {
    flex-direction: column;
    align-items: stretch;
  }
  
  .filter-btn {
    text-align: center;
  }
}

/* Utility Classes */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition-slow);
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

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

.text-secondary {
  color: var(--secondary-color);
}

.bg-primary {
  background: var(--gradient-primary);
}

.bg-secondary {
  background: var(--gradient-secondary);
}

.loading {
  pointer-events: none;
  opacity: 0.7;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--white);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}