/* Cybershield Logo-Matched Color Scheme */
:root {
  /* Logo-matched primary colors */
  --color-primary: #0066CC;        /* Main blue from logo */
  --color-primary-hover: #0052A3;  /* Darker blue for hover */
  --color-primary-active: #004080; /* Even darker for active */
  --color-secondary-blue: #29A6E6; /* Light blue from logo gradient */
  --color-accent-blue: #4AC4F2;    /* Lightest blue accent */

  /* Neutral colors */
  --color-white: rgba(255, 255, 255, 1);
  --color-black: rgba(0, 0, 0, 1);
  --color-gray-50: rgba(249, 250, 251, 1);
  --color-gray-100: rgba(243, 244, 246, 1);
  --color-gray-200: rgba(229, 231, 235, 1);
  --color-gray-300: rgba(209, 213, 219, 1);
  --color-gray-400: rgba(156, 163, 175, 1);
  --color-gray-500: rgba(107, 114, 128, 1);
  --color-gray-600: rgba(75, 85, 99, 1);
  --color-gray-700: rgba(55, 65, 81, 1);
  --color-gray-800: rgba(31, 41, 55, 1);
  --color-gray-900: rgba(17, 24, 39, 1);

  /* Metallic silver from logo border */
  --color-silver: rgba(192, 192, 192, 1);
  --color-silver-dark: rgba(169, 169, 169, 1);

  /* Status colors */
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;
  --color-info: var(--color-primary);

  /* Semantic tokens */
  --color-background: var(--color-white);
  --color-surface: var(--color-gray-50);
  --color-text: var(--color-gray-900);
  --color-text-secondary: var(--color-gray-600);
  --color-border: var(--color-gray-200);
  --color-card-border: var(--color-gray-100);

  /* Typography */
  --font-family-base: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-family-mono: 'SF Mono', 'Monaco', 'Consolas', monospace;

  /* Font sizes */
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 30px;
  --font-size-4xl: 36px;
  --font-size-5xl: 48px;

  /* Font weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* Border radius */
  --radius-sm: 4px;
  --radius-base: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  --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 -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* Layout */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1536px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  color: var(--color-text);
}

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(--space-4);
}

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

a:hover {
  color: var(--color-primary-hover);
}

/* Layout */
.container {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-8);
  }
}

/* Logo */
.logo {
  height: 40px;
  width: auto;
}

.logo--footer {
  height: 32px;
  margin-bottom: var(--space-3);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
}

.nav__brand {
  display: flex;
  align-items: center;
}

.nav__menu {
  display: none;
  list-style: none;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .nav__menu {
    display: flex;
  }
}

.nav__link {
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav__link:hover {
  color: var(--color-primary);
  background-color: var(--color-surface);
}

.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  padding: var(--space-2);
}

@media (min-width: 768px) {
  .nav__toggle {
    display: none;
  }
}

.nav__toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: all var(--transition-fast);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary-blue) 100%);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
  background: linear-gradient(135deg, var(--color-primary-hover) 0%, var(--color-primary) 100%);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

.btn--full-width {
  width: 100%;
}

/* Hero Section */
.hero {
  padding: var(--space-24) 0 var(--space-16) 0;
  background: linear-gradient(135deg, rgba(0, 102, 204, 0.03) 0%, rgba(41, 166, 230, 0.03) 100%);
  margin-top: 80px; /* Account for fixed header */
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr 1fr;
  }
}

.hero__content {
  text-align: center;
}

@media (min-width: 1024px) {
  .hero__content {
    text-align: left;
  }
}

.hero__title {
  color: var(--color-text);
  margin-bottom: var(--space-6);
}

.hero__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
  line-height: 1.6;
}

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

.security-icon {
  position: relative;
}

.shield {
  width: 200px;
  height: 240px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary-blue) 100%);
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-xl);
  position: relative;
  animation: pulse 3s infinite;
}

.shield-inner {
  width: 160px;
  height: 200px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
}

.checkmark {
  font-size: 48px;
  color: white;
  font-weight: var(--font-weight-bold);
}

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

/* Sections */
.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-title {
  margin-bottom: var(--space-6);
  color: var(--color-text);
}

.section-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  max-width: 800px;
  margin: 0 auto;
}

/* About Section */
.about {
  padding: var(--space-20) 0;
  background-color: var(--color-surface);
}

.about__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: start;
}

@media (min-width: 1024px) {
  .about__content {
    grid-template-columns: 2fr 1fr;
  }
}

.about__text {
  font-size: var(--font-size-lg);
  line-height: 1.7;
}

.about__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .about__stats {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .about__stats {
    grid-template-columns: 1fr;
  }
}

.stat {
  text-align: center;
  padding: var(--space-6);
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.stat__number {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.stat__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

/* Services Section */
.services {
  padding: var(--space-20) 0;
  background-color: var(--color-background);
}

.services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .services__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.service-card {
  background: white;
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-base);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

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

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

.service-card__icon {
  font-size: 32px;
  margin-bottom: var(--space-4);
  display: block;
}

.service-card__title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.service-card__description {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  line-height: 1.6;
}

.service-card__features {
  list-style: none;
}

.service-card__features li {
  padding: var(--space-1) 0;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  position: relative;
  padding-left: var(--space-5);
}

.service-card__features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: var(--font-weight-bold);
}

/* Benefits Section */
.benefits {
  padding: var(--space-20) 0;
  background: linear-gradient(135deg, rgba(0, 102, 204, 0.03) 0%, rgba(41, 166, 230, 0.03) 100%);
}

.benefits__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 640px) {
  .benefits__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .benefits__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.benefit-card {
  background: white;
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  text-align: center;
  box-shadow: var(--shadow-base);
  transition: transform var(--transition-base);
}

.benefit-card:hover {
  transform: translateY(-2px);
}

.benefit-card__icon {
  font-size: 48px;
  margin-bottom: var(--space-4);
  display: block;
}

.benefit-card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.benefit-card__description {
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Contact Section */
.contact {
  padding: var(--space-20) 0;
  background-color: var(--color-surface);
}

.contact__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
}

@media (min-width: 1024px) {
  .contact__content {
    grid-template-columns: 2fr 1fr;
  }
}

.form {
  background: white;
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-base);
}

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

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.form-control {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-info-card {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary-blue) 100%);
  color: white;
  padding: var(--space-8);
  border-radius: var(--radius-xl);
}

.contact-info-card h3 {
  color: white;
  margin-bottom: var(--space-4);
}

.contact-info-card p {
  margin-bottom: var(--space-6);
  opacity: 0.9;
}

.contact-detail {
  margin-bottom: var(--space-3);
  opacity: 0.9;
}

.contact-detail strong {
  color: white;
  font-weight: var(--font-weight-semibold);
}

/* Footer */
.footer {
  background-color: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--space-16) 0 var(--space-8) 0;
}

.footer__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
  .footer__content {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer__brand p {
  color: var(--color-gray-400);
  margin-top: var(--space-3);
}

.footer__column h4 {
  color: white;
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-4);
}

.footer__column ul {
  list-style: none;
}

.footer__column li {
  margin-bottom: var(--space-2);
}

.footer__column a {
  color: var(--color-gray-400);
  transition: color var(--transition-fast);
}

.footer__column a:hover {
  color: white;
}

.footer__bottom {
  border-top: 1px solid var(--color-gray-700);
  padding-top: var(--space-8);
  text-align: center;
}

.footer__bottom p {
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
}

/* Mobile Menu */
@media (max-width: 767px) {
  .nav__menu {
    position: fixed;
    top: 81px;
    left: 0;
    right: 0;
    background: white;
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-6);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }

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

  .nav__menu {
    flex-direction: column;
    gap: var(--space-2);
  }

  .nav__link {
    display: block;
    padding: var(--space-3);
  }
}

/* Utility classes */
.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;
}

/* Form error styles */
.field-error {
  color: var(--color-error);
  font-size: var(--font-size-sm);
  margin-top: var(--space-1);
  display: block;
}

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

.form-success {
  background-color: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: var(--color-success);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  text-align: center;
}

.form-error {
  background-color: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: var(--color-error);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  text-align: center;
}