/* ===================================================================
   TOO EXIGO Oil & Gas - Professional Design System
   Modern CSS Architecture for Energy Sector Corporate Website
   =================================================================== */

/* Google Fonts Import */
@import url("https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700&family=Roboto+Slab:wght@400;500;600;700&display=swap");

/* ===================================================================
   GLOBAL MOBILE OVERFLOW PREVENTION
   =================================================================== */

/* Prevent horizontal overflow on mobile */
html, body {
  overflow-x: hidden;
  max-width: 100vw;
  box-sizing: border-box;
}

*, *::before, *::after {
  box-sizing: border-box;
}

/* ===================================================================
   CSS CUSTOM PROPERTIES - PROFESSIONAL DESIGN SYSTEM
   =================================================================== */

:root {
  /* === PROFESSIONAL COLOR PALETTE === */
  /* Primary Colors - Energy Sector Navy */
  --primary-50: #f0f4f8;
  --primary-100: #d9e6f2;
  --primary-200: #b3cce5;
  --primary-300: #8db3d8;
  --primary-400: #6799cb;
  --primary-500: #4180be;
  --primary-600: #2d5a87;
  --primary-700: #1a365d;
  --primary-800: #0f2a44;
  --primary-900: #051f33;

  /* Secondary Colors - Professional Gold */
  --secondary-50: #fefcf0;
  --secondary-100: #fef7d9;
  --secondary-200: #fdeeb3;
  --secondary-300: #fce58d;
  --secondary-400: #fbdc67;
  --secondary-500: #fad441;
  --secondary-600: #ecc94b;
  --secondary-700: #d69e2e;
  --secondary-800: #b7791f;
  --secondary-900: #975a16;

  /* Neutral Colors */
  --gray-50: #f7fafc;
  --gray-100: #edf2f7;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e0;
  --gray-400: #a0aec0;
  --gray-500: #718096;
  --gray-600: #4a5568;
  --gray-700: #2d3748;
  --gray-800: #1a202c;
  --gray-900: #171923;

  /* Semantic Colors */
  --success: #38a169;
  --warning: #d69e2e;
  --error: #e53e3e;
  --info: #3182ce;

  /* === DESIGN TOKENS === */
  --primary-color: var(--primary-700);
  --primary-light: var(--primary-600);
  --primary-dark: var(--primary-800);
  --secondary-color: var(--secondary-700);
  --secondary-light: var(--secondary-600);
  --secondary-dark: var(--secondary-800);

  --text-primary: var(--gray-800);
  --text-secondary: var(--gray-600);
  --text-muted: var(--gray-500);
  --text-white: #ffffff;

  --bg-primary: #ffffff;
  --bg-secondary: var(--gray-50);
  --bg-tertiary: var(--gray-100);

  --border-color: var(--gray-200);
  --border-dark: var(--gray-300);

  --surface-elevated: #ffffff;
  --surface-hover: var(--gray-50);

  /* === TYPOGRAPHY SYSTEM === */
  --font-family-primary: "Roboto", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --font-family-heading: "Roboto Slab", Georgia, serif;
  --font-family-mono: "Roboto Mono", "Courier New", monospace;

  /* Font Sizes - Professional Scale */
  --font-size-xs: 0.75rem; /* 12px */
  --font-size-sm: 0.875rem; /* 14px */
  --font-size-base: 1rem; /* 16px */
  --font-size-lg: 1.125rem; /* 18px */
  --font-size-xl: 1.25rem; /* 20px */
  --font-size-2xl: 1.5rem; /* 24px */
  --font-size-3xl: 1.875rem; /* 30px */
  --font-size-4xl: 2.25rem; /* 36px */
  --font-size-5xl: 3rem; /* 48px */
  --font-size-6xl: 3.75rem; /* 60px */

  /* Font Weights */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* === SPACING SYSTEM === */
  --spacing-1: 0.25rem; /* 4px */
  --spacing-2: 0.5rem; /* 8px */
  --spacing-3: 0.75rem; /* 12px */
  --spacing-4: 1rem; /* 16px */
  --spacing-5: 1.25rem; /* 20px */
  --spacing-6: 1.5rem; /* 24px */
  --spacing-8: 2rem; /* 32px */
  --spacing-10: 2.5rem; /* 40px */
  --spacing-12: 3rem; /* 48px */
  --spacing-16: 4rem; /* 64px */
  --spacing-20: 5rem; /* 80px */
  --spacing-24: 6rem; /* 96px */

  /* === BORDER RADIUS === */
  --radius-sm: 0.125rem; /* 2px */
  --radius-base: 0.25rem; /* 4px */
  --radius-md: 0.375rem; /* 6px */
  --radius-lg: 0.5rem; /* 8px */
  --radius-xl: 0.75rem; /* 12px */
  --radius-2xl: 1rem; /* 16px */
  --radius-full: 9999px;

  /* === SHADOWS === */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* === TRANSITIONS === */
  --transition-base: all 0.2s ease-in-out;
  --transition-fast: all 0.15s ease-in-out;
  --transition-slow: all 0.3s ease-in-out;

  /* === Z-INDEX SCALE === */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;

  /* === CONTAINER SYSTEM === */
  --container-max-width: 1200px;
  --container-padding: 1rem;
}

/* ===================================================================
   RESET & BASE STYLES
   =================================================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===================================================================
   TYPOGRAPHY
   =================================================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--text-primary);
  margin-bottom: var(--spacing-4);
}

h1 {
  font-size: var(--font-size-5xl);
}
h2 {
  font-size: var(--font-size-4xl);
}
h3 {
  font-size: var(--font-size-3xl);
}
h4 {
  font-size: var(--font-size-2xl);
}
h5 {
  font-size: var(--font-size-xl);
}
h6 {
  font-size: var(--font-size-lg);
}

p {
  margin-bottom: var(--spacing-4);
  line-height: var(--line-height-relaxed);
}

.lead {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-normal);
  color: var(--text-secondary);
}

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

a:hover {
  color: var(--primary-light);
  text-decoration: underline;
}

/* ===================================================================
   LAYOUT SYSTEM
   =================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--spacing-16) 0;
}

.section-sm {
  padding: var(--spacing-12) 0;
}

.section-lg {
  padding: var(--spacing-24) 0;
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--spacing-6);
}

.grid-cols-1 {
  grid-template-columns: repeat(1, 1fr);
}
.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Flexbox Utilities */
.flex {
  display: flex;
}
.flex-col {
  flex-direction: column;
}
.items-center {
  align-items: center;
}
.justify-center {
  justify-content: center;
}
.justify-between {
  justify-content: space-between;
}
.gap-4 {
  gap: var(--spacing-4);
}
.gap-6 {
  gap: var(--spacing-6);
}
.gap-8 {
  gap: var(--spacing-8);
}

/* Text Alignment */
.text-left {
  text-align: left;
}
.text-center {
  text-align: center;
}
.text-right {
  text-align: right;
}

/* ===================================================================
   COMPONENT SYSTEM FOUNDATION
   =================================================================== */

/* Skip Link for Accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary-color);
  color: var(--text-white);
  padding: 8px;
  text-decoration: none;
  border-radius: var(--radius-base);
  z-index: var(--z-tooltip);
  transition: var(--transition-base);
}

.skip-link:focus {
  top: 6px;
}

/* Loading States */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

/* Screen Reader Only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===================================================================
   PROFESSIONAL BUTTON SYSTEM
   =================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.btn:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* Button Hover Animation Base */
.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  transition: left 0.5s ease;
}

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

/* Button Variants */
.btn-primary {
  background-color: var(--primary-color);
  color: var(--text-white);
  border-color: var(--primary-color);
}

.btn-primary:hover {
  background-color: var(--primary-light);
  border-color: var(--primary-light);
  color: var(--text-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(26, 54, 93, 0.3);
  transition: all 0.3s ease;
}

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

.btn-secondary:hover {
  background-color: var(--primary-color);
  color: var(--text-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(26, 54, 93, 0.3);
  transition: all 0.3s ease;
}

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

.btn-gold:hover {
  background-color: var(--secondary-dark);
  border-color: var(--secondary-dark);
  color: var(--text-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(214, 158, 46, 0.4);
  transition: all 0.3s ease;
}

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

.btn-white:hover {
  background-color: var(--gray-50);
  color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
  transition: all 0.3s ease;
}

/* Button Sizes */
.btn-sm {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--spacing-4) var(--spacing-8);
  font-size: var(--font-size-lg);
}

.btn-xl {
  padding: var(--spacing-5) var(--spacing-10);
  font-size: var(--font-size-xl);
}

/* ===================================================================
   PROFESSIONAL FORM SYSTEM
   =================================================================== */

.form-group {
  margin-bottom: var(--spacing-6);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  margin-bottom: var(--spacing-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-error {
  border-color: var(--error);
}

.form-error:focus {
  border-color: var(--error);
  box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.1);
}

.form-success {
  border-color: var(--success);
}

.form-success:focus {
  border-color: var(--success);
  box-shadow: 0 0 0 3px rgba(56, 161, 105, 0.1);
}

.form-help {
  margin-top: var(--spacing-1);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.form-error-message {
  margin-top: var(--spacing-1);
  font-size: var(--font-size-sm);
  color: var(--error);
}

/* ===================================================================
   PROFESSIONAL HEADER SYSTEM
   =================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: var(--z-fixed);
  transition: var(--transition-base);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-md);
  border-bottom-color: var(--border-dark);
}

/* White Header for Contact Page */
.header-white {
  background: rgba(255, 255, 255, 0.98) !important;
  box-shadow: var(--shadow-md);
}

.header-white.scrolled {
  background: rgba(255, 255, 255, 1) !important;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 80px;
  padding: 0 var(--container-padding);
  max-width: var(--container-max-width);
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}

/* Professional Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  text-decoration: none;
  font-family: var(--font-family-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--primary-color);
  transition: var(--transition-base);
}

.logo:hover {
  color: var(--secondary-color);
  transform: scale(1.02);
}

.logo img {
  height: 45px;
  width: auto;
  object-fit: contain;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: var(--line-height-tight);
}

.logo-main {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--primary-color);
}

.logo-sub {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Professional Navigation */
.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
}

/* Desktop Navigation */
@media (min-width: 769px) {
  .nav {
    display: flex;
  }
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(26, 54, 93, 0.1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: block;
    padding: 1rem;
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-links {
    flex-direction: column;
    gap: 0.5rem;
    width: 100%;
  }

  .nav-item {
    width: 100%;
  }

  .nav-link {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    min-height: 48px;
    display: flex;
    align-items: center;
    font-size: 1rem;
    transition: all 0.2s ease;
  }

  .nav-link:hover,
  .nav-link:focus {
    background: rgba(26, 54, 93, 0.05);
    transform: translateX(4px);
  }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

@media (max-width: 768px) {
  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1rem;
  }
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: var(--spacing-3) var(--spacing-4);
  color: var(--text-primary);
  text-decoration: none;
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
  position: relative;
}

.nav-link:hover {
  color: var(--primary-color);
  background-color: var(--surface-hover);
  transform: translateY(-1px);
}

.nav-link.active {
  color: var(--primary-color);
  font-weight: var(--font-weight-semibold);
  background-color: var(--surface-hover);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--secondary-color);
  border-radius: var(--radius-full);
}

@media (max-width: 768px) {
  .nav-link {
    padding: 1rem;
    border-radius: 0;
    border-bottom: 1px solid rgba(26, 54, 93, 0.1);
    min-height: 56px;
    font-size: 1rem;
  }

  .nav-link:last-child {
    border-bottom: none;
  }

  .nav-link.active::after {
    display: none;
  }
}

/* Professional Dropdown Menu */
.dropdown {
  position: relative;
}

.dropdown-toggle::after {
  content: "";
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: var(--spacing-2);
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  transition: var(--transition-base);
}

.dropdown:hover .dropdown-toggle::after {
  transform: rotate(180deg);
}

/* Desktop Dropdown Menu */
@media (min-width: 769px) {
  .dropdown-menu {
    position: absolute;
    top: calc(100% + var(--spacing-2));
    left: 0;
    min-width: 220px;
    background: var(--surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px) scale(0.95);
    transition: var(--transition-base);
    z-index: var(--z-dropdown);
    list-style: none;
    margin: 0;
    display: block;
  }

  .dropdown:hover .dropdown-menu,
  .dropdown:focus-within .dropdown-menu,
  .dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
  }
}

/* Desktop Dropdown Items */
@media (min-width: 769px) {
  .dropdown-menu li {
    margin: 0;
  }

  .dropdown-item {
    display: block;
    padding: var(--spacing-3) var(--spacing-4);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
    line-height: var(--line-height-normal);
  }

  .dropdown-item:hover,
  .dropdown-item:focus {
    background: var(--surface-hover);
    color: var(--primary-color);
    transform: translateX(4px);
  }
}

/* Mobile Dropdown Styles */
@media (max-width: 768px) {
  .dropdown-menu {
    display: none;
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background: rgba(26, 54, 93, 0.02);
    margin: 0.5rem 0 0 1rem;
    border-left: 3px solid var(--secondary-color);
    padding-left: 1rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    list-style: none;
  }

  .dropdown.active .dropdown-menu {
    display: block;
    max-height: 200px;
  }

  .dropdown-item {
    padding: 0.75rem 1rem;
    min-height: 48px;
    display: flex;
    align-items: center;
    border-radius: 8px;
    font-size: 1rem;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    text-decoration: none;
  }

  .dropdown-item:hover,
  .dropdown-item:focus {
    background: rgba(26, 54, 93, 0.05);
    color: var(--primary-color);
    transform: translateX(4px);
  }
}

/* Header CTA */
.header-cta {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.header-contact {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.header-contact i {
  color: var(--secondary-color);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-2);
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* ===================================================================
   PROFESSIONAL FOOTER SYSTEM
   =================================================================== */

.footer {
  background: linear-gradient(
    135deg,
    var(--primary-color) 0%,
    var(--primary-dark) 100%
  );
  color: var(--text-white);
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--secondary-color),
    transparent
  );
}

.footer-main {
  padding: var(--spacing-16) 0 var(--spacing-12);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-12);
  margin-bottom: var(--spacing-12);
}

.footer-section {
  position: relative;
}

.footer-section h4 {
  color: var(--text-white);
  font-family: var(--font-family-heading);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-6);
  position: relative;
}

.footer-section h4::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--secondary-color);
  border-radius: var(--radius-full);
}

.footer-section p {
  color: rgba(255, 255, 255, 0.85);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-4);
  font-size: var(--font-size-base);
}

.footer-description {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-6);
  color: rgba(255, 255, 255, 0.9);
}

/* Footer Contact Information */
.footer-contact {
  margin-top: var(--spacing-6);
}

.footer-contact-item {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-4);
  gap: var(--spacing-3);
}

.footer-contact-icon {
  width: 40px;
  height: 40px;
  background: var(--secondary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.footer-contact-info {
  flex: 1;
}

.footer-contact-label {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--spacing-1);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-contact-value {
  font-size: var(--font-size-base);
  color: #ffffff;
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  transition: all 0.3s ease;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.footer-contact-value:hover {
  color: var(--secondary-color);
  text-shadow: 0 2px 4px rgba(214, 158, 46, 0.3);
  transform: translateX(2px);
}

/* Footer Links */
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: var(--spacing-3);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  transition: var(--transition-base);
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-1) 0;
}

.footer-links a:hover {
  color: var(--secondary-color);
  transform: translateX(4px);
}

.footer-links a::before {
  content: "→";
  opacity: 0;
  transform: translateX(-10px);
  transition: var(--transition-base);
}

.footer-links a:hover::before {
  opacity: 1;
  transform: translateX(0);
}

/* Footer Bottom */
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-8) 0;
  background: rgba(0, 0, 0, 0.2);
}

.footer-bottom-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-4);
}

.footer-copyright {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  margin: 0;
}

/* ===================================================================
   PROFESSIONAL HERO SECTION
   =================================================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--primary-color);
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

/* Hero Carousel Styles */
.hero-carousel {
  position: relative;
  width: 100%;
  height: 100%;
}

.contact-bar {
  background-color: #996600; /* Red background */
  color: #fff;
  padding: 20px 0;

  width: 40%;
  display: flex;
  justify-content: end;
  position: absolute;
  right: 0;
  margin: auto;
  z-index: 1;
  bottom: -40px;
}

.contact-container {
  display: flex;
  justify-content: center;
  gap: 50px;
  max-width: 1200px;
  margin: auto;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.contact-item i {
  font-size: 22px;
  background: rgba(255, 255, 255, 0.15);
  padding: 10px;
  border-radius: 50%;
}

.contact-info {
  display: flex;
  flex-direction: column;
}

.contact-info .label {
  font-size: 14px;
  opacity: 0.9;
}

.contact-info .value {
  font-size: 16px;
  font-weight: 600;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.2s cubic-bezier(0.4, 0, 0.2, 1);
  animation-fill-mode: both;
}

.hero-slide.active {
  opacity: 1;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(33, 36, 40, 0.85) 0%,
    rgba(41, 46, 54, 0.7) 100%
  );
  z-index: 2;
}

/* Carousel Indicators */
.carousel-indicators {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  gap: 16px;
}

.indicator {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  border: 2px solid rgba(255, 255, 255, 0.7);
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.indicator.active,
.indicator:hover {
  background: var(--secondary-color);
  border-color: var(--secondary-color);
  transform: scale(1.2);
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  color: var(--text-white);
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-8);
}

.hero-title {
  font-size: var(--font-size-6xl);
  font-weight: var(--font-weight-extrabold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-6);
  color: var(--text-white);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-8);
  color: whitesmoke;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.hero-actions {
  display: flex;
  gap: var(--spacing-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* ===================================================================
   PROFESSIONAL CARD SYSTEM
   =================================================================== */

.card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-base);
  overflow: hidden;
  transition: var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-header {
  padding: var(--spacing-6);
  border-bottom: 1px solid var(--border-color);
}

.card-body {
  padding: var(--spacing-6);
}

.card-footer {
  padding: var(--spacing-6);
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-2);
}

.card-text {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ===================================================================
   TESTIMONIAL CAROUSEL STYLES
   =================================================================== */

.testimonial-carousel {
  position: relative;
  overflow: hidden;
}

.testimonial-slide {
  display: none;
  animation: fadeIn 0.5s ease-in-out;
}

.testimonial-slide.active {
  display: block;
}

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

.testimonial-indicator {
  transition: all 0.3s ease;
}

.testimonial-indicator.active {
  background-color: var(--secondary-color);
  transform: scale(1.2);
}

.testimonial-indicator:hover {
  background-color: var(--secondary-light);
  transform: scale(1.1);
}

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

@media (max-width: 768px) {
  .testimonial-slide .flex-col {
    text-align: center;
  }

  .testimonial-slide .justify-center.md\:justify-start {
    justify-content: center !important;
  }

  #prevTestimonial,
  #nextTestimonial {
    display: none;
  }
}

/* Tablet Styles */
@media (max-width: 1024px) {
  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-8);
  }

  .header-container {
    padding: 0 var(--spacing-4);
  }

  .grid-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-cols-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Mobile Styles */
@media (max-width: 768px) {
  /* Mobile Header */
  .header-container {
    min-height: 70px;
    padding: 0 1rem;
    flex-wrap: nowrap;
    position: relative;
    width: 100%;
    max-width: 100vw;
    overflow: hidden;
    box-sizing: border-box;
  }

  .logo {
    font-size: var(--font-size-lg);
    z-index: 1001;
  }

  .logo img {
    height: 35px;
    width: auto;
  }

  .logo-text .logo-main {
    font-size: var(--font-size-lg);
  }

  .logo-text .logo-sub {
    font-size: var(--font-size-xs);
  }



  /* Enhanced Mobile Nav Links */
  .nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    background: rgba(26, 54, 93, 0.05);
    border: 2px solid transparent;
    font-size: 1.125rem;
    font-weight: 600;
    min-height: 56px; /* Enhanced touch target */
    display: flex;
    align-items: center;
    color: var(--text-primary);
    transition: all 0.3s ease;
    position: relative;
  }

  .nav-link:hover,
  .nav-link:focus {
    background: rgba(26, 54, 93, 0.1);
    border-color: var(--primary-color);
    transform: translateX(8px);
    color: var(--primary-color);
  }

  .nav-link.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
  }

  .nav-link.active::after {
    display: none;
  }



  .dropdown-item {
    padding: 0.75rem 1rem;
    min-height: 48px;
    display: flex;
    align-items: center;
    border-radius: 8px;
    font-size: 1rem;
    color: var(--text-secondary);
    transition: all 0.2s ease;
  }

  .dropdown-item:hover,
  .dropdown-item:focus {
    background: rgba(26, 54, 93, 0.05);
    color: var(--primary-color);
    transform: translateX(4px);
  }

  /* Enhanced Mobile Menu Toggle */
  .mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.75rem;
    border-radius: 8px;
    min-height: 48px;
    min-width: 48px;
    justify-content: center;
    align-items: center;
    transition: all 0.3s ease;
    z-index: 1001;
  }

  @media (max-width: 768px) {
    .mobile-menu-toggle {
      display: flex;
    }
  }

  .mobile-menu-toggle:hover {
    background: rgba(26, 54, 93, 0.1);
  }

  .mobile-menu-toggle span {
    width: 24px;
    height: 3px;
    background: var(--text-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 2px;
  }

  .mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
    background: var(--primary-color);
  }

  .mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scale(0);
  }

  .mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
    background: var(--primary-color);
  }

  .header-cta {
    display: none;
  }

  /* Mobile Menu Body Styles */
  body.mobile-menu-open {
    position: fixed;
    width: 100%;
    height: 100%;
  }

  html.mobile-menu-active {
    overflow: hidden;
  }



  /* Mobile Hero */
  .hero-title {
    font-size: var(--font-size-4xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-lg);
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-4);
  }

  .hero-actions .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
    min-height: 48px; /* Touch-friendly */
    font-size: var(--font-size-lg);
  }

  /* Mobile Buttons - Touch-friendly sizing */
  .btn {
    min-height: 44px; /* iOS recommended minimum */
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-base);
  }

  .btn-lg {
    min-height: 48px;
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-lg);
  }

  /* Mobile Carousel Indicators */
  .carousel-indicators {
    right: 20px;
    bottom: -20px;
    padding: 10px 14px;
  }

  .indicator {
    width: 12px;
    height: 12px;
  }

  /* Mobile Company Overview */
  #overview .grid {
    grid-template-columns: 1fr;
  }

  #overview .grid > div:first-child {
    order: 2;
  }

  #overview .grid > div:last-child {
    order: 1;
  }

  /* Mobile Footer */
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
    text-align: center;
  }

  .footer-main {
    padding: var(--spacing-12) 0 var(--spacing-8);
  }

  .footer-bottom-content {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-6);
  }

  /* Mobile Grid */
  .grid-cols-4,
  .grid-cols-3,
  .grid-cols-2 {
    grid-template-columns: 1fr;
  }

  /* Mobile Typography */
  h1 {
    font-size: var(--font-size-4xl);
  }
  h2 {
    font-size: var(--font-size-3xl);
  }
  h3 {
    font-size: var(--font-size-2xl);
  }

  /* Mobile Buttons */
  .btn-lg {
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-base);
  }

  .btn-xl {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-lg);
  }
}

/* Small Mobile Styles */
@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-4);
  }

  .header-container {
    padding: 0 var(--spacing-3);
  }

  .footer-main {
    padding: var(--spacing-10) 0 var(--spacing-6);
  }

  /* Extra small mobile adjustments */
  .hero-title {
    font-size: var(--font-size-2xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-base);
  }

  .card {
    margin-bottom: var(--spacing-6);
  }

  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
  }

  /* Form improvements for small screens */
  .form-group {
    margin-bottom: var(--spacing-4);
  }

  .form-control {
    font-size: 16px; /* Prevents zoom on iOS */
  }
}

  .footer-content {
    gap: var(--spacing-6);
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-base);
  }

  h1 {
    font-size: var(--font-size-3xl);
  }
  h2 {
    font-size: var(--font-size-2xl);
  }

  .btn {
    padding: var(--spacing-3) var(--spacing-5);
    font-size: var(--font-size-sm);
  }
}

/* Company Overview Section */
#overview .grid img {
  max-width: 100%;
  height: auto;
}

#overview .flex.justify-center {
  display: flex;
  justify-content: center;
}

/* Additional Mobile Responsiveness Improvements */
@media (max-width: 480px) {
  /* Contact bar mobile */
  .contact-bar {
    width: 100% !important;
    position: relative !important;
    padding: var(--spacing-4) 0;
  }

  .contact-container {
    flex-direction: column;
    gap: var(--spacing-4);
    padding: 0 var(--spacing-4);
  }

  .contact-item {
    justify-content: center;
  }

  /* Hero carousel mobile */
  .carousel-indicators {
    bottom: 10px;
    right: 10px;
    padding: 8px 12px;
  }

  .indicator {
    width: 10px;
    height: 10px;
  }
}

/* Human-centered design improvements */
.hero-section {
  position: relative;
  overflow: hidden;
}

.hero-section img {
  transition: transform 0.3s ease;
}

.hero-section:hover img {
  transform: scale(1.02);
}

/* Smooth animations for better UX */
.card {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

/* Better focus states for accessibility */
.btn:focus,
.form-control:focus {
  outline: 2px solid var(--secondary-color);
  outline-offset: 2px;
}

/* Loading animation for images */
img {
  transition: opacity 0.3s ease;
}

img[loading="lazy"] {
  opacity: 0;
}

img[loading="lazy"].loaded {
  opacity: 1;
}

/* Enhanced Visual Design Improvements */
.section {
  padding: var(--spacing-16) 0;
}

.section:nth-child(even) {
  background: var(--bg-secondary);
}

/* Professional Image Styling */
.professional-image {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.professional-image:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2xl);
}

/* Enhanced Typography */
.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--spacing-6);
  text-align: center;
}

.section-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--spacing-12);
  line-height: var(--line-height-relaxed);
}

/* Enhanced Card Styling */
.card-enhanced {
  background: var(--surface-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-8);
  transition: all 0.3s ease;
  border: 1px solid var(--border-light);
}

.card-enhanced:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-2xl);
  border-color: var(--secondary-color);
}

/* Professional Grid Layouts */
.professional-grid {
  display: grid;
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-12);
}

.professional-grid.cols-2 {
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
}

.professional-grid.cols-3 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* Enhanced Visual Hierarchy */
.content-block {
  margin-bottom: var(--spacing-12);
}

.content-block h3 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-4);
}

.content-block p {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-4);
}

/* Professional List Styling */
.professional-list {
  list-style: none;
  padding: 0;
}

.professional-list li {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-3);
  font-size: var(--font-size-lg);
}

.professional-list li i {
  color: var(--secondary-color);
  margin-right: var(--spacing-3);
  font-size: var(--font-size-xl);
}

/* Additional Mobile Responsiveness Improvements */
@media (max-width: 768px) {
  /* Hide decorative images on mobile for better performance */
  .mobile-hide {
    display: none !important;
  }

  /* Ensure all content stays within viewport */
  * {
    max-width: 100%;
    box-sizing: border-box;
  }

  /* Prevent horizontal scrolling */
  body {
    overflow-x: hidden;
  }

  /* Improve mobile form styling */
  .form-input,
  .form-select,
  .form-textarea {
    font-size: 16px; /* Prevents zoom on iOS */
    padding: 12px 16px;
    border-radius: 8px;
    border: 2px solid #e5e7eb;
    transition: all 0.3s ease;
  }

  .form-input:focus,
  .form-select:focus,
  .form-textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
    outline: none;
  }

  /* Improve mobile button styling */
  .btn {
    min-height: 48px;
    font-size: 16px;
    padding: 12px 24px;
    border-radius: 8px;
    touch-action: manipulation;
  }

  /* Improve mobile card spacing */
  .card {
    margin-bottom: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  }

  /* Improve mobile grid layouts */
  .grid {
    gap: 1rem;
  }

  /* Better mobile typography */
  h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    margin-bottom: 1rem;
  }

  p {
    line-height: 1.6;
    margin-bottom: 1rem;
  }

  /* Mobile-friendly navigation */
  .nav-link {
    padding: 12px 16px;
    font-size: 16px;
  }
}

/* Extra small mobile devices */
@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  /* Even smaller text on very small screens */
  .hero-title {
    font-size: 1.875rem; /* 30px */
    line-height: 1.1;
  }

  .hero-subtitle {
    font-size: 1rem; /* 16px */
    line-height: 1.5;
  }

  /* Stack form fields on very small screens */
  .grid-cols-2 {
    grid-template-columns: 1fr;
  }

  /* Smaller buttons on very small screens */
  .btn {
    padding: 10px 20px;
    font-size: 14px;
  }
}