/* ==========================================
   ARCHITECTURAL STUDIO - RACING RED & CARBON
   Primary: #D32F2F | Secondary: #212121
   ========================================== */

/* ===== ROOT VARIABLES ===== */
:root {
  --primary-color: #D32F2F;
  --primary-dark: #B71C1C;
  --primary-light: #EF5350;
  --secondary-color: #212121;
  --secondary-dark: #000000;
  --secondary-light: #424242;
  --carbon-gray: #1A1A1A;
  --light-gray: #F5F5F5;
  --white: #FFFFFF;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.15);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.2);
  --shadow-xl: 0 16px 48px rgba(0,0,0,0.3);
}

/* ===== GLOBAL STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--secondary-color) !important;
  background-color: var(--white) !important;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--secondary-color) !important;
}

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

img {
  max-width: 100%;
  height: auto;
}

/* ===== NAVBAR ===== */
.navbar {
  background: linear-gradient(135deg, var(--secondary-color) 0%, var(--carbon-gray) 100%) !important;
  box-shadow: var(--shadow-md);
  padding: 1rem 0 !important;
  transition: var(--transition);
  z-index: 1000;
}

.navbar.position-sticky {
  top: 0;
}

.navbar-brand {
  color: var(--white) !important;
  font-size: 1.75rem !important;
  font-weight: 800 !important;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: var(--transition);
  position: relative;
  padding-left: 1rem;
}

.navbar-brand::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 100%;
  background: var(--primary-color);
  border-radius: 2px;
}

.navbar-brand:hover {
  color: var(--primary-light) !important;
  transform: translateX(5px);
}

.navbar-toggler {
  border: 2px solid var(--primary-color) !important;
  padding: 0.5rem 0.75rem !important;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 0.25rem rgba(211, 47, 47, 0.25) !important;
}

.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='%23D32F2F' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

.navbar-nav {
  gap: 0.5rem;
}

.nav-link {
  color: rgba(255, 255, 255, 0.85) !important;
  font-weight: 500 !important;
  padding: 0.5rem 1rem !important;
  position: relative;
  transition: var(--transition);
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 0.5px;
}

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

.nav-link:hover,
.nav-link.active {
  color: var(--white) !important;
  background: rgba(211, 47, 47, 0.1);
  border-radius: 4px;
}

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

/* ===== HERO SECTION ===== */
.hero-section {
  background: linear-gradient(135deg, var(--secondary-color) 0%, var(--carbon-gray) 50%, var(--primary-dark) 100%);
  min-height: 90vh;
  position: relative;
  overflow: hidden;
  padding: 4rem 0;
}

.blueprint-overlay {
  background-image: 
    linear-gradient(rgba(211, 47, 47, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(211, 47, 47, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.3;
  z-index: 1;
}

.hero-section .container {
  position: relative;
  z-index: 2;
}

.hero-content {
  animation: fadeInUp 1s ease-out;
}

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

.hero-section .display-2 {
  color: var(--white) !important;
  font-weight: 800 !important;
  line-height: 1.2;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-section .lead {
  color: rgba(255, 255, 255, 0.9) !important;
  font-size: 1.25rem;
  font-weight: 400;
  line-height: 1.8;
}

.min-vh-75 {
  min-height: 75vh;
}

/* ===== BUTTONS ===== */
.btn {
  border-radius: 8px !important;
  font-weight: 600 !important;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: var(--transition) !important;
  border: 2px solid transparent !important;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: var(--primary-color) !important;
  border-color: var(--primary-color) !important;
  color: var(--white) !important;
  box-shadow: 0 4px 12px rgba(211, 47, 47, 0.3);
}

.btn-primary:hover {
  background: var(--primary-dark) !important;
  border-color: var(--primary-dark) !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(211, 47, 47, 0.4) !important;
}

.btn-outline-light {
  color: var(--white) !important;
  border-color: var(--white) !important;
  background: transparent !important;
}

.btn-outline-light:hover {
  background: var(--white) !important;
  color: var(--secondary-color) !important;
  border-color: var(--white) !important;
  transform: translateY(-2px);
}

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

.btn-outline-dark:hover {
  background: var(--secondary-color) !important;
  color: var(--white) !important;
  border-color: var(--secondary-color) !important;
  transform: translateY(-2px);
}

.btn-light {
  background: var(--white) !important;
  color: var(--secondary-color) !important;
  border-color: var(--white) !important;
}

.btn-light:hover {
  background: var(--light-gray) !important;
  color: var(--secondary-color) !important;
  transform: translateY(-2px);
}

.btn-lg {
  padding: 0.875rem 2rem !important;
  font-size: 1rem !important;
}

/* ===== HERO IMAGE ===== */
.hero-image-wrapper {
  animation: fadeInRight 1s ease-out 0.3s both;
  position: relative;
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.hero-image-wrapper img {
  border: 4px solid var(--primary-color);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  transform: perspective(1000px) rotateY(-5deg);
  transition: var(--transition);
}

.hero-image-wrapper:hover img {
  transform: perspective(1000px) rotateY(0deg);
  box-shadow: 0 25px 70px rgba(211, 47, 47, 0.4);
}

/* ===== STATS BANNER ===== */
.stats-banner {
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  padding: 2rem 0;
  border-top: 3px solid var(--primary-color);
}

.stat-item {
  padding: 1rem;
  transition: var(--transition);
  border-radius: 8px;
}

.stat-item:hover {
  background: rgba(211, 47, 47, 0.1);
  transform: translateY(-5px);
}

.stat-item .counter {
  color: var(--primary-color) !important;
  font-weight: 800 !important;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.stat-item small {
  color: rgba(255, 255, 255, 0.7) !important;
  font-weight: 500;
  letter-spacing: 1px;
}

/* ===== SECTIONS ===== */
section {
  position: relative;
}

.py-5 {
  padding: 4rem 0 !important;
}

.bg-light {
  background: var(--light-gray) !important;
}

.bg-white {
  background: var(--white) !important;
}

.bg-secondary {
  background: var(--secondary-color) !important;
  color: var(--white) !important;
}

.bg-secondary * {
  color: var(--white) !important;
}

/* ===== BADGE ===== */
.badge {
  background: var(--primary-color) !important;
  color: var(--white) !important;
  font-weight: 600 !important;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: 20px;
  font-size: 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

/* ===== SERVICE CARDS ===== */
.service-card {
  background: var(--white);
  border-radius: 12px;
  padding: 2rem;
  transition: var(--transition);
  border: 2px solid transparent;
  height: 100%;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
  transform: scaleX(0);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card-wrapper {
  perspective: 1000px;
  height: 400px;
}

.card-front,
.card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  transition: transform 0.6s;
  border-radius: 12px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.card-front {
  background: var(--white);
  border: 2px solid var(--light-gray);
}

.card-back {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--white) !important;
  transform: rotateY(180deg);
}

.service-card-wrapper:hover .card-front {
  transform: rotateY(180deg);
}

.service-card-wrapper:hover .card-back {
  transform: rotateY(360deg);
}

.icon-wrapper {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 2rem;
  color: var(--white);
  box-shadow: 0 4px 12px rgba(211, 47, 47, 0.3);
  transition: var(--transition);
}

.service-card:hover .icon-wrapper {
  transform: rotate(360deg) scale(1.1);
}

.service-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 2rem;
  color: var(--white) !important;
  box-shadow: 0 4px 12px rgba(211, 47, 47, 0.3);
}

/* ===== CARDS ===== */
.card {
  border: none !important;
  border-radius: 12px !important;
  overflow: hidden;
  transition: var(--transition) !important;
  box-shadow: var(--shadow-sm) !important;
}

.card:hover {
  transform: translateY(-8px) !important;
  box-shadow: var(--shadow-lg) !important;
}

.card-img-top {
  height: 250px;
  object-fit: cover;
  transition: var(--transition);
}

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

.card-body {
  padding: 1.5rem !important;
}

.card-title {
  color: var(--secondary-color) !important;
  font-weight: 700 !important;
  margin-bottom: 1rem;
}

.card-text {
  color: var(--secondary-light) !important;
  line-height: 1.6;
}

/* ===== SHADOW UTILITIES ===== */
.shadow-sm {
  box-shadow: var(--shadow-sm) !important;
}

.shadow {
  box-shadow: var(--shadow-md) !important;
}

.shadow-lg {
  box-shadow: var(--shadow-lg) !important;
}

/* ===== ALERTS ===== */
.alert {
  border-radius: 8px !important;
  border: none !important;
  padding: 1.25rem !important;
  font-weight: 500;
}

.alert-danger {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark)) !important;
  color: var(--white) !important;
}

.alert-success {
  background: linear-gradient(135deg, #4CAF50, #2E7D32) !important;
  color: var(--white) !important;
}

/* ===== FORMS ===== */
.form-label {
  font-weight: 600 !important;
  color: var(--secondary-color) !important;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.form-control,
.form-select {
  border: 2px solid #E0E0E0 !important;
  border-radius: 8px !important;
  padding: 0.75rem 1rem !important;
  transition: var(--transition) !important;
  font-size: 1rem;
  color: var(--secondary-color) !important;
}

.form-control:focus,
.form-select:focus {
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 0.25rem rgba(211, 47, 47, 0.15) !important;
  outline: none;
}

.form-control::placeholder {
  color: #999 !important;
}

.invalid-feedback {
  color: var(--primary-color) !important;
  font-weight: 500;
  font-size: 0.875rem;
}

.valid-feedback {
  color: #4CAF50 !important;
  font-weight: 500;
  font-size: 0.875rem;
}

.form-check-input {
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid #E0E0E0 !important;
  cursor: pointer;
}

.form-check-input:checked {
  background-color: var(--primary-color) !important;
  border-color: var(--primary-color) !important;
}

.form-check-input:focus {
  box-shadow: 0 0 0 0.25rem rgba(211, 47, 47, 0.15) !important;
}

.form-check-label {
  cursor: pointer;
  color: var(--secondary-color) !important;
  font-weight: 500;
}

/* ===== TABLE ===== */
.table {
  color: var(--secondary-color) !important;
}

.table th {
  font-weight: 700 !important;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.5px;
  color: var(--secondary-color) !important;
}

.table td {
  vertical-align: middle;
  color: var(--secondary-light) !important;
}

/* ===== TIMELINE ===== */
.timeline-section {
  position: relative;
}

.timeline-section::before {
  content: '';
  position: absolute;
  left: 50px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--primary-color), var(--primary-light));
}

.diagnostic-step {
  position: relative;
  margin-bottom: 2rem;
}

.diagnostic-step::before {
  content: '';
  position: absolute;
  left: -15px;
  top: 15px;
  width: 15px;
  height: 15px;
  background: var(--primary-color);
  border-radius: 50%;
  border: 3px solid var(--white);
  box-shadow: 0 0 0 3px var(--primary-color);
}

/* ===== ACCORDION ===== */
.accordion-item {
  border: none !important;
  margin-bottom: 1rem;
  border-radius: 8px !important;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.accordion-header {
  border-radius: 8px !important;
}

.accordion-button {
  background: var(--white) !important;
  color: var(--secondary-color) !important;
  font-weight: 600 !important;
  padding: 1.25rem !important;
  border: 2px solid transparent !important;
  transition: var(--transition) !important;
}

.accordion-button:not(.collapsed) {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark)) !important;
  color: var(--white) !important;
  border-color: var(--primary-color) !important;
  box-shadow: none !important;
}

.accordion-button:focus {
  box-shadow: 0 0 0 0.25rem rgba(211, 47, 47, 0.15) !important;
  border-color: var(--primary-color) !important;
}

.accordion-button::after {
  filter: brightness(0) invert(0);
}

.accordion-button:not(.collapsed)::after {
  filter: brightness(0) invert(1);
}

.accordion-body {
  padding: 1.5rem !important;
  background: var(--white);
  color: var(--secondary-light) !important;
  line-height: 1.8;
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  background: transparent !important;
  padding: 0 !important;
  margin: 0 !important;
}

.breadcrumb-item {
  color: var(--secondary-light) !important;
  font-weight: 500;
}

.breadcrumb-item a {
  color: var(--primary-color) !important;
  text-decoration: none;
}

.breadcrumb-item a:hover {
  color: var(--primary-dark) !important;
  text-decoration: underline;
}

.breadcrumb-item.active {
  color: var(--secondary-color) !important;
}

.breadcrumb-item + .breadcrumb-item::before {
  color: var(--secondary-light) !important;
}

/* ===== FILTER TABS ===== */
.filter-tabs {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 3rem;
}

.filter-btn {
  padding: 0.75rem 2rem;
  background: var(--white);
  color: var(--secondary-color) !important;
  border: 2px solid var(--light-gray);
  border-radius: 50px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.9rem;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--primary-color);
  color: var(--white) !important;
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(211, 47, 47, 0.3);
}

/* ===== SOCIAL LINKS ===== */
.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  width: 45px;
  height: 45px;
  background: var(--secondary-color);
  color: var(--white) !important;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 1.25rem;
  transition: var(--transition);
  border: 2px solid transparent;
}

.social-links a:hover {
  background: var(--primary-color);
  border-color: var(--primary-color);
  transform: translateY(-5px);
  box-shadow: 0 4px 12px rgba(211, 47, 47, 0.3);
}

/* ===== FOOTER ===== */
footer {
  background: linear-gradient(135deg, var(--secondary-color), var(--carbon-gray));
  color: rgba(255, 255, 255, 0.8) !important;
  padding-top: 3rem;
}

footer h5 {
  color: var(--white) !important;
  font-weight: 700;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
  padding-bottom: 0.5rem;
}

footer h5::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 3px;
  background: var(--primary-color);
}

footer a {
  color: rgba(255, 255, 255, 0.7) !important;
  text-decoration: none;
  transition: var(--transition);
  display: block;
  padding: 0.3rem 0;
}

footer a:hover {
  color: var(--primary-light) !important;
  padding-left: 10px;
}

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

.border-top {
  border-color: rgba(255, 255, 255, 0.1) !important;
}

.text-white-50 {
  color: rgba(255, 255, 255, 0.5) !important;
}

/* ===== ICONS ===== */
.bi {
  vertical-align: middle;
}

/* ===== ANIMATIONS ===== */
@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== UTILITY CLASSES ===== */
.text-primary {
  color: var(--primary-color) !important;
}

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

.text-muted {
  color: var(--secondary-light) !important;
}

.text-white {
  color: var(--white) !important;
}

.text-light {
  color: rgba(255, 255, 255, 0.9) !important;
}

.fw-bold {
  font-weight: 700 !important;
}

.text-uppercase {
  text-transform: uppercase !important;
  letter-spacing: 0.5px;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 991.98px) {
  .navbar-collapse {
    background: var(--carbon-gray);
    padding: 1rem;
    margin-top: 1rem;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
  }
  
  .nav-link {
    padding: 0.75rem 1rem !important;
  }
  
  .hero-section {
    min-height: auto;
    padding: 3rem 0;
  }
  
  .hero-section .display-2 {
    font-size: 2.5rem !important;
  }
  
  .min-vh-75 {
    min-height: auto !important;
  }
  
  .service-card-wrapper {
    height: auto;
    margin-bottom: 2rem;
  }
  
  .card-front,
  .card-back {
    position: relative;
    transform: none !important;
  }
  
  .card-back {
    display: none;
  }
  
  .timeline-section::before {
    left: 30px;
  }
  
  .py-5 {
    padding: 3rem 0 !important;
  }
}

@media (max-width: 767.98px) {
  .hero-section .display-2 {
    font-size: 2rem !important;
  }
  
  .hero-section .lead {
    font-size: 1.1rem;
  }
  
  .display-4 {
    font-size: 2rem !important;
  }
  
  .display-5 {
    font-size: 1.75rem !important;
  }
  
  .btn-lg {
    padding: 0.75rem 1.5rem !important;
    font-size: 0.95rem !important;
  }
  
  .stat-item {
    margin-bottom: 1rem;
  }
  
  .service-card {
    padding: 1.5rem;
  }
  
  .icon-wrapper,
  .service-icon {
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
  }
  
  .filter-btn {
    padding: 0.6rem 1.5rem;
    font-size: 0.85rem;
  }
  
  .social-links a {
    width: 40px;
    height: 40px;
    font-size: 1.1rem;
  }
}

@media (max-width: 575.98px) {
  .hero-section .display-2 {
    font-size: 1.75rem !important;
  }
  
  .d-flex.flex-wrap.gap-3 {
    flex-direction: column !important;
  }
  
  .btn-lg {
    width: 100%;
  }
  
  .navbar-brand {
    font-size: 1.5rem !important;
  }
  
  .card-img-top {
    height: 200px;
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  .navbar,
  .btn,
  footer,
  .filter-tabs {
    display: none !important;
  }
  
  body {
    color: #000 !important;
    background: #fff !important;
  }
  
  .shadow,
  .shadow-lg {
    box-shadow: none !important;
  }
}