/* ========================================
   GLOBAL STYLES & VARIABLES
   ======================================== */
:root {
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary-color: #0f172a;
  --text-color: #1e293b;
  --text-light: #64748b;
  --bg-color: #ffffff;
  --bg-light: #f8fafc;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
  --border-radius: 8px;
  --container-width: 1200px;
}

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

body {
  font-family: "Poppins", sans-serif;
  color: var(--text-color);
  background-color: var(--bg-color);
  line-height: 1.6;
  overflow-x: hidden;
  /* Use flexbox column layout */
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  margin: 0;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

.btn-primary {
  display: inline-block;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--primary-dark)
  );
  color: white;
  padding: 12px 32px;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ========================================
   HEADER SECTION
   ======================================== */
.header {
  background: linear-gradient(135deg, var(--secondary-color), #1e293b);
  /* FIX: Reduce padding and use flex-grow for proportional space */
  padding: 20px 0;
  box-shadow: var(--shadow-md);
  flex-shrink: 0;
}

.logo-container {
  display: flex;
  justify-content: center;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.logo-image {
  /* FIX: Reduce logo size for better viewport fit */
  max-width: 180px;
  width: 100%;
  height: auto;
  filter: drop-shadow(2px 2px 8px rgba(0, 0, 0, 0.4));
  transition: var(--transition);
}

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

.logo-icon {
  font-size: 2.5rem;
  filter: drop-shadow(2px 2px 4px rgba(0, 0, 0, 0.3));
}

.logo-text {
  font-size: 2rem;
  font-weight: 700;
  color: white;
  letter-spacing: 1px;
}

/* ========================================
   CLIENTS SECTION - LOGO SLIDER
   ======================================== */
.clients-section {
  background: #0d8b8b;
  padding: 40px 0 50px;
  overflow: hidden;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.clients-title {
  color: #ffd700;
  font-size: 1.8rem;
  font-weight: 600;
  text-align: center;
  margin-bottom: 40px;
  letter-spacing: 0.5px;
}

.clients-slider-wrapper {
  width: 100%;
  overflow: hidden;
  position: relative;
}

.clients-slider {
  position: relative;
  width: 100%;
  overflow: hidden;
  /* Gradient fade on edges */
  mask-image: linear-gradient(
    to right,
    transparent 0%,
    black 10%,
    black 90%,
    transparent 100%
  );
  -webkit-mask-image: linear-gradient(
    to right,
    transparent 0%,
    black 10%,
    black 90%,
    transparent 100%
  );
}

.clients-track {
  display: flex;
  gap: 60px;
  animation: clientsScroll 25s linear infinite;
  width: max-content;
}

.clients-track:hover {
  animation-play-state: paused;
}

.client-logo-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 200px;
  padding: 20px;
  transition: transform 0.3s ease;
}

.client-logo-item:hover {
  transform: scale(1.05);
}

.client-logo-img {
  width: 180px;
  height: 100px;
  object-fit: contain;
  filter: brightness(1.1);
  transition:
    filter 0.3s ease,
    transform 0.3s ease;
}

.client-logo-item:hover .client-logo-img {
  filter: brightness(1.2);
}

.client-name {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.85rem;
  margin-top: 12px;
  text-align: center;
  font-weight: 500;
}

@keyframes clientsScroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background: var(--secondary-color);
  color: white;
  /* FIX: Reduce padding for better viewport fit */
  padding: 15px 0;
  text-align: center;
  flex-shrink: 0;
}

.footer-text {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

/* 4K & Large Screens (> 1920px) */
@media (min-width: 1921px) {
  :root {
    --container-width: 1600px;
  }

  .header {
    padding: 25px 0;
  }

  .logo-image {
    max-width: 250px;
  }

  /* Clients Section - 4K */
  .clients-section {
    padding: 50px 0 60px;
  }

  .clients-title {
    font-size: 2.2rem;
    margin-bottom: 50px;
  }

  .clients-track {
    gap: 80px;
  }

  .client-logo-item {
    min-width: 250px;
  }

  .client-logo-img {
    width: 220px;
    height: 120px;
  }

  .client-name {
    font-size: 1rem;
  }

  .footer {
    padding: 20px 0;
  }

  .footer-text {
    font-size: 1rem;
  }
}

/* Large Desktop (1440px - 1920px) */
@media (min-width: 1440px) and (max-width: 1920px) {
  .logo-image {
    max-width: 220px;
  }

  .header {
    padding: 22px 0;
  }

  /* Clients Section - Large Desktop */
  .clients-section {
    padding: 45px 0 55px;
  }

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

  .clients-track {
    gap: 70px;
  }

  .client-logo-item {
    min-width: 220px;
  }

  .client-logo-img {
    width: 200px;
    height: 110px;
  }
}

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
  :root {
    --container-width: 900px;
  }

  .header {
    padding: 18px 0;
  }

  .logo-image {
    max-width: 160px;
  }

  /* Clients Section - Tablet */
  .clients-section {
    padding: 35px 0 45px;
  }

  .clients-title {
    font-size: 1.6rem;
    margin-bottom: 35px;
  }

  .clients-track {
    gap: 50px;
  }

  .client-logo-item {
    min-width: 180px;
    padding: 15px;
  }

  .client-logo-img {
    width: 160px;
    height: 90px;
  }
}

/* Mobile Large (640px - 767px) */
@media (max-width: 767px) {
  :root {
    --container-width: 100%;
  }

  .header {
    padding: 25px 15px;
  }

  .logo-image {
    max-width: 200px;
  }

  /* Clients Section - Mobile Large */
  .clients-section {
    padding: 30px 0 40px;
  }

  .clients-title {
    font-size: 1.4rem;
    margin-bottom: 30px;
    padding: 0 15px;
  }

  .clients-track {
    gap: 40px;
    animation-duration: 20s;
  }

  .client-logo-item {
    min-width: 120px;
    padding: 12px;
  }

  .client-logo-img {
    width: 100px;
    height: 60px;
  }

  .client-name {
    font-size: 0.75rem;
    margin-top: 10px;
  }
}

/* Mobile Small (< 640px) */
@media (max-width: 639px) {
  .header {
    padding: 20px 15px;
  }

  .logo-image {
    max-width: 180px;
  }

  /* Clients Section - Mobile Small */
  .clients-section {
    padding: 25px 0 35px;
  }

  .clients-title {
    font-size: 1.2rem;
    margin-bottom: 25px;
  }

  .clients-track {
    gap: 35px;
    animation-duration: 18s;
  }

  .client-logo-item {
    min-width: 100px;
    padding: 10px;
  }

  .client-logo-img {
    width: 80px;
    height: 50px;
  }

  .client-name {
    font-size: 0.7rem;
  }
}

/* Extra Small Mobile (< 480px) */
@media (max-width: 479px) {
  .header {
    padding: 18px 10px;
  }

  .logo-image {
    max-width: 150px;
  }

  /* Clients Section - Extra Small */
  .clients-section {
    padding: 20px 0 30px;
  }

  .clients-title {
    font-size: 1rem;
    margin-bottom: 20px;
  }

  .clients-track {
    gap: 25px;
    animation-duration: 15s;
  }

  .client-logo-item {
    min-width: 90px;
    padding: 8px;
  }

  .client-logo-img {
    width: 70px;
    height: 45px;
  }

  .client-name {
    font-size: 0.65rem;
    margin-top: 8px;
  }

  .footer {
    padding: 12px 0;
  }

  .footer-text {
    font-size: 0.8rem;
  }
}

/* ========================================
   ANIMATIONS & HOVER EFFECTS
   ======================================== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}