/* ==========================================================================
   UNALINE MİMARLIK — STYLE.CSS
   Premium Architecture Firm Website
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   -------------------------------------------------------------------------- */
:root {
  /* Colors */
  --color-anthracite: #2C2C2C;
  --color-dark-gray: #3A3A3A;
  --color-charcoal: #444444;
  --color-medium-gray: #6B6B6B;
  --color-light-gray: #A0A0A0;
  --color-off-white: #F5F2ED;
  --color-stone: #E8E2D9;
  --color-cream: #FAF8F5;
  --color-white: #FFFFFF;
  --color-gold: #B8965A;
  --color-gold-dark: #9A7B47;
  --color-gold-light: #D4B07A;
  --color-earth: #7A6348;

  /* Typography */
  --font-heading: 'Montserrat', sans-serif;
  --font-accent: 'Playfair Display', serif;
  --font-body: 'Montserrat', sans-serif;

  /* Spacing */
  --section-padding: 100px 0;
  --section-padding-sm: 60px 0;

  /* Transitions */
  --transition-fast: 0.25s ease;
  --transition-medium: 0.4s ease;
  --transition-slow: 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 16px 60px rgba(0, 0, 0, 0.16);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

/* --------------------------------------------------------------------------
   2. RESET & BASE STYLES
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--color-anthracite);
  background-color: var(--color-white);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

::selection {
  background-color: var(--color-gold);
  color: var(--color-white);
}

/* --------------------------------------------------------------------------
   3. TYPOGRAPHY
   -------------------------------------------------------------------------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-anthracite);
}

h1 {
  font-size: 3.5rem;
  letter-spacing: -1px;
}

h2 {
  font-size: 2.5rem;
  letter-spacing: -0.5px;
}

h3 {
  font-size: 1.75rem;
}

h4 {
  font-size: 1.25rem;
}

h5 {
  font-size: 1.1rem;
}

.font-accent {
  font-family: var(--font-accent);
  font-style: italic;
}

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

.text-light-gray {
  color: var(--color-light-gray);
}

.text-medium-gray {
  color: var(--color-medium-gray);
}

.section-subtitle {
  font-family: var(--font-accent);
  font-size: 1.1rem;
  color: var(--color-gold);
  font-style: italic;
  margin-bottom: 10px;
  letter-spacing: 1px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  position: relative;
}

.section-divider {
  width: 60px;
  height: 2px;
  background-color: var(--color-gold);
  margin: 0 auto 40px;
}

.section-divider-left {
  margin: 0 0 40px 0;
}

/* --------------------------------------------------------------------------
   4. BUTTONS
   -------------------------------------------------------------------------- */
.btn-unaline {
  display: inline-block;
  padding: 14px 36px;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  border: 2px solid var(--color-gold);
  color: var(--color-gold);
  background: transparent;
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
  z-index: 1;
  cursor: pointer;
}

.btn-unaline::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background-color: var(--color-gold);
  transition: left var(--transition-medium);
  z-index: -1;
}

.btn-unaline:hover {
  color: var(--color-white);
  border-color: var(--color-gold);
}

.btn-unaline:hover::before {
  left: 0;
}

.btn-unaline-filled {
  background-color: var(--color-gold);
  color: var(--color-white);
  border-color: var(--color-gold);
}

.btn-unaline-filled::before {
  background-color: var(--color-gold-dark);
}

.btn-unaline-white {
  border-color: var(--color-white);
  color: var(--color-white);
}

.btn-unaline-white::before {
  background-color: var(--color-white);
}

.btn-unaline-white:hover {
  color: var(--color-anthracite);
  border-color: var(--color-white);
}

/* --------------------------------------------------------------------------
   5. NAVBAR
   -------------------------------------------------------------------------- */
.navbar-unaline {
  padding: 20px 0;
  transition: all var(--transition-medium);
  background: transparent;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

.navbar-unaline.scrolled {
  background-color: rgba(44, 44, 44, 0.97);
  padding: 12px 0;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
}

.navbar-brand-unaline {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white) !important;
  letter-spacing: 3px;
  text-transform: uppercase;
}

.navbar-brand-unaline span {
  color: var(--color-gold);
  font-weight: 300;
}

.navbar-unaline .nav-link {
  color: rgba(255, 255, 255, 0.85) !important;
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 2px;
  padding: 8px 16px !important;
  position: relative;
  transition: color var(--transition-fast);
}

.navbar-unaline .nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 16px;
  right: 16px;
  height: 1px;
  background-color: var(--color-gold);
  transform: scaleX(0);
  transition: transform var(--transition-medium);
  transform-origin: center;
}

.navbar-unaline .nav-link:hover,
.navbar-unaline .nav-link.active {
  color: var(--color-gold) !important;
}

.navbar-unaline .nav-link:hover::after,
.navbar-unaline .nav-link.active::after {
  transform: scaleX(1);
}

.navbar-toggler {
  border: 1px solid rgba(255, 255, 255, 0.3) !important;
  padding: 6px 10px;
}

.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, 0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

/* Inner page navbar (dark bg by default) */
.navbar-inner {
  background-color: rgba(44, 44, 44, 0.97);
  padding: 12px 0;
}

/* --------------------------------------------------------------------------
   6. HERO SECTION
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg,
      rgba(44, 44, 44, 0.85) 0%,
      rgba(44, 44, 44, 0.5) 50%,
      rgba(44, 44, 44, 0.3) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}

.hero-label {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 5px;
  color: var(--color-gold);
  margin-bottom: 20px;
}

.hero-title {
  font-size: 4rem;
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.1;
  margin-bottom: 24px;
}

.hero-title .accent {
  font-family: var(--font-accent);
  font-weight: 400;
  font-style: italic;
  color: var(--color-gold-light);
}

.hero-description {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 550px;
}

.hero-line {
  width: 60px;
  height: 2px;
  background-color: var(--color-gold);
  margin-bottom: 30px;
}

/* Scroll indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  text-align: center;
}

.hero-scroll-indicator span {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 10px;
}

.hero-scroll-indicator .scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-gold), transparent);
  margin: 0 auto;
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {

  0%,
  100% {
    opacity: 1;
    transform: scaleY(1);
  }

  50% {
    opacity: 0.4;
    transform: scaleY(0.6);
  }
}

/* --------------------------------------------------------------------------
   7. PAGE HEADER (Inner Pages)
   -------------------------------------------------------------------------- */
.page-header {
  background-color: var(--color-anthracite);
  padding: 160px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(184, 150, 90, 0.1) 0%, transparent 60%);
}

.page-header h1 {
  color: var(--color-white);
  font-size: 3rem;
  margin-bottom: 16px;
  position: relative;
}

.page-header .breadcrumb-custom {
  display: flex;
  justify-content: center;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0;
  position: relative;
}

.page-header .breadcrumb-custom li {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.page-header .breadcrumb-custom li a {
  color: var(--color-gold);
}

.page-header .breadcrumb-custom li+li::before {
  content: '—';
  margin-right: 8px;
  color: rgba(255, 255, 255, 0.3);
}

/* --------------------------------------------------------------------------
   8. ABOUT SECTION
   -------------------------------------------------------------------------- */
.about-section {
  padding: var(--section-padding);
  background-color: var(--color-white);
}

.about-image-wrapper {
  position: relative;
  overflow: hidden;
}

.about-image-wrapper img {
  width: 100%;
  height: 450px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.about-image-wrapper:hover img {
  transform: scale(1.03);
}

.about-image-wrapper .image-accent {
  position: absolute;
  bottom: -15px;
  right: -15px;
  width: 120px;
  height: 120px;
  border: 2px solid var(--color-gold);
  z-index: -1;
}

.about-content {
  padding-left: 50px;
}

.about-content p {
  font-size: 1rem;
  color: var(--color-medium-gray);
  margin-bottom: 20px;
  line-height: 1.8;
}

.about-stats {
  display: flex;
  gap: 40px;
  margin-top: 35px;
  padding-top: 35px;
  border-top: 1px solid var(--color-stone);
}

.about-stat-item .stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-gold);
  line-height: 1;
}

.about-stat-item .stat-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-medium-gray);
  margin-top: 8px;
}

/* --------------------------------------------------------------------------
   9. SECTORS / SERVICES SECTION
   -------------------------------------------------------------------------- */
.sectors-section {
  padding: var(--section-padding);
  background-color: var(--color-cream);
}

.sector-card {
  position: relative;
  overflow: hidden;
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-medium);
  height: 100%;
}

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

.sector-card-image {
  height: 260px;
  overflow: hidden;
}

.sector-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.sector-card:hover .sector-card-image img {
  transform: scale(1.08);
}

.sector-card-body {
  padding: 35px 30px;
}

.sector-card-number {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--color-gold);
  margin-bottom: 12px;
}

.sector-card-body h3 {
  font-size: 1.35rem;
  margin-bottom: 14px;
  font-weight: 700;
}

.sector-card-body p {
  font-size: 0.92rem;
  color: var(--color-medium-gray);
  line-height: 1.7;
  margin-bottom: 24px;
}

.sector-card-link {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-gold);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: gap var(--transition-fast);
}

.sector-card-link:hover {
  gap: 14px;
  color: var(--color-gold-dark);
}

/* --------------------------------------------------------------------------
   10. PROJECTS SECTION
   -------------------------------------------------------------------------- */
.projects-section {
  padding: var(--section-padding);
  background-color: var(--color-white);
}

.project-item {
  position: relative;
  overflow: hidden;
  margin-bottom: 24px;
  cursor: pointer;
}

.project-item img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-item:hover img {
  transform: scale(1.06);
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top,
      rgba(44, 44, 44, 0.9) 0%,
      rgba(44, 44, 44, 0.1) 60%,
      transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 30px;
  opacity: 0;
  transition: opacity var(--transition-medium);
}

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

.project-overlay .project-category {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--color-gold);
  margin-bottom: 8px;
}

.project-overlay h4 {
  color: var(--color-white);
  font-size: 1.3rem;
  font-weight: 600;
}

/* Tall project variant */
.project-item.project-tall img {
  height: 664px;
}

/* --------------------------------------------------------------------------
   11. REFERENCES SECTION
   -------------------------------------------------------------------------- */
.references-section {
  padding: var(--section-padding);
  background-color: var(--color-cream);
}

.reference-item {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 120px;
  padding: 20px 30px;
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-medium);
}

.reference-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.reference-item .ref-logo {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-charcoal);
  text-transform: uppercase;
  letter-spacing: 2px;
  text-align: center;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.reference-item:hover .ref-logo {
  opacity: 1;
}

/* --------------------------------------------------------------------------
   12. CONTACT PREVIEW SECTION
   -------------------------------------------------------------------------- */
.contact-preview-section {
  padding: var(--section-padding);
  background-color: var(--color-anthracite);
  color: var(--color-white);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 28px;
}

.contact-info-item .contact-icon {
  width: 48px;
  height: 48px;
  border: 1px solid var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-gold);
}

.contact-info-item .contact-text h5 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-gold);
  margin-bottom: 6px;
}

.contact-info-item .contact-text p {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
}

/* --------------------------------------------------------------------------
   13. CONTACT FORM (Contact Page)
   -------------------------------------------------------------------------- */
.contact-form-section {
  padding: var(--section-padding);
  background-color: var(--color-white);
}

.form-floating .form-control,
.form-floating .form-select {
  border: none;
  border-bottom: 1px solid var(--color-stone);
  border-radius: 0;
  padding-left: 0;
  font-family: var(--font-body);
  font-size: 0.95rem;
  background-color: transparent;
  transition: border-color var(--transition-fast);
}

.form-floating .form-control:focus,
.form-floating .form-select:focus {
  box-shadow: none;
  border-color: var(--color-gold);
}

.form-floating label {
  font-size: 0.85rem;
  color: var(--color-light-gray);
  padding-left: 0;
}

.map-placeholder {
  width: 100%;
  height: 400px;
  background-color: var(--color-stone);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-medium-gray);
  font-size: 0.9rem;
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   14. ABOUT PAGE DETAIL
   -------------------------------------------------------------------------- */
.about-detail-section {
  padding: var(--section-padding);
}

.vision-mission-card {
  padding: 50px 40px;
  background-color: var(--color-cream);
  height: 100%;
  transition: all var(--transition-medium);
}

.vision-mission-card:hover {
  box-shadow: var(--shadow-md);
}

.vision-mission-card .vm-icon {
  width: 56px;
  height: 56px;
  border: 1px solid var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gold);
  font-size: 1.3rem;
  margin-bottom: 24px;
}

.vision-mission-card h3 {
  font-size: 1.3rem;
  margin-bottom: 16px;
}

.vision-mission-card p {
  color: var(--color-medium-gray);
  font-size: 0.95rem;
  line-height: 1.8;
}

.design-approach-section {
  padding: var(--section-padding);
  background-color: var(--color-cream);
}

.approach-item {
  display: flex;
  gap: 20px;
  margin-bottom: 30px;
}

.approach-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-gold);
  opacity: 0.3;
  line-height: 1;
  min-width: 50px;
}

.approach-item h4 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.approach-item p {
  font-size: 0.92rem;
  color: var(--color-medium-gray);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   15. REFERENCES PAGE
   -------------------------------------------------------------------------- */
.reference-detail-card {
  padding: 40px;
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: all var(--transition-medium);
  height: 100%;
}

.reference-detail-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}

.reference-detail-card .ref-icon {
  font-size: 2rem;
  color: var(--color-gold);
  margin-bottom: 20px;
}

.reference-detail-card h4 {
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.reference-detail-card p {
  font-size: 0.9rem;
  color: var(--color-medium-gray);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   16. SERVICES / HIZMETLER PAGE
   -------------------------------------------------------------------------- */
.service-detail-section {
  padding: var(--section-padding);
}

.service-detail-section:nth-child(even) {
  background-color: var(--color-cream);
}

.service-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.service-process {
  margin-top: 30px;
}

.process-step {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}

.process-step .step-number {
  width: 36px;
  height: 36px;
  background-color: var(--color-gold);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}

.process-step .step-text h5 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.process-step .step-text p {
  font-size: 0.88rem;
  color: var(--color-medium-gray);
  margin: 0;
}

/* --------------------------------------------------------------------------
   17. FOOTER
   -------------------------------------------------------------------------- */
.footer {
  background-color: var(--color-anthracite);
  color: rgba(255, 255, 255, 0.6);
  padding: 80px 0 0;
}

.footer-top {
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-brand span {
  color: var(--color-gold);
  font-weight: 300;
}

.footer-desc {
  font-size: 0.9rem;
  line-height: 1.8;
  max-width: 300px;
}

.footer h5 {
  color: var(--color-white);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 24px;
}

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

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.5);
  transition: all var(--transition-fast);
  position: relative;
  padding-left: 0;
}

.footer-links a:hover {
  color: var(--color-gold);
  padding-left: 8px;
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 0.9rem;
}

.footer-contact-item i {
  color: var(--color-gold);
  width: 16px;
}

.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.3);
  letter-spacing: 1px;
}

/* --------------------------------------------------------------------------
   18. SCROLL ANIMATIONS
   -------------------------------------------------------------------------- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Staggered delay */
.delay-1 {
  transition-delay: 0.1s;
}

.delay-2 {
  transition-delay: 0.2s;
}

.delay-3 {
  transition-delay: 0.3s;
}

.delay-4 {
  transition-delay: 0.4s;
}

/* --------------------------------------------------------------------------
   19. RESPONSIVE
   -------------------------------------------------------------------------- */
@media (max-width: 991px) {
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

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

  .hero-title {
    font-size: 2.8rem;
  }

  .hero-section {
    min-height: 600px;
  }

  .about-content {
    padding-left: 0;
    margin-top: 40px;
  }

  .about-stats {
    gap: 24px;
  }

  .about-image-wrapper img {
    height: 350px;
  }

  :root {
    --section-padding: 70px 0;
  }
}

@media (max-width: 767px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.7rem;
  }

  .section-title {
    font-size: 1.7rem;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-section {
    min-height: 500px;
  }

  .hero-description {
    font-size: 0.95rem;
  }

  .about-stats {
    flex-direction: column;
    gap: 16px;
  }

  .project-item img {
    height: 250px;
  }

  .project-item.project-tall img {
    height: 250px;
  }

  :root {
    --section-padding: 50px 0;
  }

  .btn-unaline {
    padding: 12px 28px;
    font-size: 0.78rem;
  }

  .page-header {
    padding: 120px 0 60px;
  }

  .page-header h1 {
    font-size: 2rem;
  }
}

@media (max-width: 575px) {
  .hero-title {
    font-size: 1.8rem;
  }

  .navbar-brand-unaline {
    font-size: 1.2rem;
    letter-spacing: 2px;
  }

  .about-stat-item .stat-number {
    font-size: 2rem;
  }
}

/* --------------------------------------------------------------------------
   20. UTILITY CLASSES
   -------------------------------------------------------------------------- */
.bg-cream {
  background-color: var(--color-cream);
}

.bg-stone {
  background-color: var(--color-stone);
}

.bg-anthracite {
  background-color: var(--color-anthracite);
}

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

.py-section {
  padding: var(--section-padding);
}

.letter-spacing-wide {
  letter-spacing: 3px;
}

.letter-spacing-wider {
  letter-spacing: 5px;
}

/* Projects page filter buttons */
.filter-btn {
  padding: 8px 24px;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  border: 1px solid var(--color-stone);
  background: transparent;
  color: var(--color-medium-gray);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-heading);
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--color-gold);
  color: var(--color-gold);
  background-color: rgba(184, 150, 90, 0.06);
}