/* ============================================
   eer.technology - Global Styles
   ============================================ */

:root {
  --color-primary: #0A1628;
  --color-accent: #00D4AA;
  --color-secondary: #1E3A5F;
  --color-text: #E8ECF1;
  --color-text-muted: #8899AA;
  --color-bg: #0D1B2A;
  --color-surface: #132238;
  --color-surface-hover: #1A2E4A;
  --color-border: #1E3A5F;
  --color-error: #FF4D6A;
  --color-success: #00D4AA;
  --color-white: #FFFFFF;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
  --radius: 8px;
  --radius-lg: 16px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.4);
  --transition: 0.2s ease;
  --max-width: 1200px;
  --sidebar-width: 260px;
}

/* ============================================
   Reset & Base
   ============================================ */

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

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

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

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

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

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

/* ============================================
   Layout Utilities
   ============================================ */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
  color: var(--color-white);
}

.section-subtitle {
  font-size: 1.15rem;
  text-align: center;
  color: var(--color-text-muted);
  margin-bottom: 60px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   Loading
   ============================================ */

.loading-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--color-bg);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ============================================
   Navigation
   ============================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 22, 40, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
}

.nav-logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -0.02em;
}

.nav-logo-img {
  height: 32px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--color-accent);
}

.lang-toggle {
  background: transparent;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  padding: 4px 12px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition);
}

.lang-toggle:hover {
  background: var(--color-accent);
  color: var(--color-primary);
}

/* ============================================
   Hero Section
   ============================================ */

.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(
    135deg,
    var(--color-primary) 0%,
    var(--color-bg) 40%,
    var(--color-secondary) 100%
  );
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 30% 50%,
    rgba(0, 212, 170, 0.08) 0%,
    transparent 60%
  );
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  padding: 0 24px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  color: var(--color-white);
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  margin-bottom: 40px;
  line-height: 1.7;
}

/* ============================================
   Buttons
   ============================================ */

.btn-primary {
  display: inline-block;
  padding: 14px 36px;
  background: var(--color-accent);
  color: var(--color-primary);
  font-size: 1rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn-primary:hover {
  background: var(--color-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0, 212, 170, 0.3);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  display: inline-block;
  padding: 10px 24px;
  background: transparent;
  color: var(--color-accent);
  font-size: 0.9rem;
  font-weight: 600;
  border: 2px solid var(--color-accent);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
}

.btn-secondary:hover {
  background: var(--color-accent);
  color: var(--color-primary);
}

.btn-full {
  width: 100%;
}

.btn-small {
  padding: 6px 14px;
  font-size: 0.8rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 600;
  transition: all var(--transition);
}

.btn-edit {
  background: var(--color-secondary);
  color: var(--color-text);
}

.btn-edit:hover {
  background: var(--color-accent);
  color: var(--color-primary);
}

.btn-delete {
  background: transparent;
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

.btn-delete:hover {
  background: var(--color-error);
  color: var(--color-white);
}

/* ============================================
   Services Section
   ============================================ */

.services-section {
  background: var(--color-primary);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all var(--transition);
}

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

.service-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.service-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-white);
}

.service-description {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ============================================
   Products Section
   ============================================ */

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

.products-list {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.product-card {
  display: flex;
  gap: 40px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  align-items: flex-start;
  transition: border-color var(--transition);
}

.product-card:hover {
  border-color: var(--color-accent);
}

.product-info {
  flex: 1;
}

.product-name {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 24px;
}

.product-problem,
.product-solution {
  margin-bottom: 20px;
}

.product-problem h4,
.product-solution h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.product-problem p,
.product-solution p {
  color: var(--color-text-muted);
  line-height: 1.7;
}

.product-media {
  flex: 0 0 400px;
}

.product-screenshot {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.product-video {
  width: 100%;
  aspect-ratio: 16/9;
  border: none;
  border-radius: var(--radius);
}

/* ============================================
   Team Section
   ============================================ */

.team-section {
  background: var(--color-primary);
}

.team-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.team-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
}

.team-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.team-photo {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 16px;
  border: 2px solid var(--color-border);
}

.team-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 4px;
}

.team-role {
  font-size: 0.9rem;
  color: var(--color-accent);
  margin-bottom: 12px;
  font-weight: 500;
}

.team-bio {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.team-linkedin {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
}

.team-linkedin:hover {
  color: var(--color-white);
}

/* ============================================
   Footer / Contact
   ============================================ */

.footer-section {
  background: var(--color-surface);
  padding: 80px 0 40px;
  border-top: 1px solid var(--color-border);
}

.footer-section .section-title {
  margin-bottom: 40px;
}

.footer-content {
  display: flex;
  justify-content: center;
  margin-bottom: 48px;
}

.footer-contact p {
  margin-bottom: 12px;
  color: var(--color-text-muted);
}

.footer-contact a {
  color: var(--color-accent);
}

.footer-contact strong {
  color: var(--color-text);
}

.footer-bottom {
  text-align: center;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* ============================================
   Modal
   ============================================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 24px;
}

.modal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  width: 100%;
  max-width: 480px;
  position: relative;
  box-shadow: var(--shadow-lg);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-wide {
  max-width: 700px;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 20px;
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.75rem;
  cursor: pointer;
  transition: color var(--transition);
  line-height: 1;
}

.modal-close:hover {
  color: var(--color-white);
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 24px;
}

.modal-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ============================================
   Forms
   ============================================ */

.form-label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.form-input {
  padding: 10px 14px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  font-size: 0.95rem;
  font-family: var(--font-family);
  transition: border-color var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-row {
  display: flex;
  gap: 16px;
}

.form-row > .form-label {
  flex: 1;
}

.form-checkbox-label {
  flex-direction: row !important;
  align-items: center;
  gap: 8px !important;
  cursor: pointer;
}

.form-checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-accent);
  cursor: pointer;
}

.form-message {
  font-size: 0.9rem;
  color: var(--color-accent);
  text-align: center;
}

.form-error {
  color: var(--color-error);
  font-size: 0.9rem;
  padding: 8px 0;
}

.form-success {
  color: var(--color-success);
  font-size: 0.9rem;
  padding: 8px 0;
}

/* ============================================
   Login Page
   ============================================ */

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  padding: 24px;
}

.login-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
}

.login-title {
  font-size: 1.75rem;
  font-weight: 800;
  text-align: center;
  color: var(--color-white);
  margin-bottom: 4px;
}

.login-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  margin-bottom: 32px;
  font-size: 0.95rem;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ============================================
   Admin Layout
   ============================================ */

.admin-layout {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: var(--sidebar-width);
  background: var(--color-primary);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  overflow-y: auto;
}

.admin-sidebar-header {
  padding: 24px 20px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.admin-logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-white);
}

.admin-badge {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  background: var(--color-accent);
  padding: 2px 8px;
  border-radius: 4px;
}

.admin-nav {
  flex: 1;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.admin-nav-item {
  display: block;
  padding: 10px 16px;
  border-radius: var(--radius);
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
}

.admin-nav-item:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

.admin-nav-item.active {
  background: var(--color-surface);
  color: var(--color-accent);
  font-weight: 600;
}

.admin-logout-btn {
  margin: 12px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition);
}

.admin-logout-btn:hover {
  border-color: var(--color-error);
  color: var(--color-error);
}

.admin-main {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 32px;
  background: var(--color-bg);
  min-height: 100vh;
}

.admin-content {
  max-width: 1000px;
}

.admin-page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.admin-page-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 24px;
}

.admin-page-header .admin-page-title {
  margin-bottom: 0;
}

.admin-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 600px;
}

/* ============================================
   Dashboard
   ============================================ */

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.dashboard-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  transition: all var(--transition);
  text-decoration: none;
}

.dashboard-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.dashboard-card-value {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-accent);
}

.dashboard-card-label {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ============================================
   Admin Tables
   ============================================ */

.admin-table-wrap {
  overflow-x: auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.admin-table th {
  text-align: left;
  padding: 12px 16px;
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--color-border);
}

.admin-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  vertical-align: middle;
}

.admin-table tbody tr:hover {
  background: var(--color-surface);
}

.table-actions {
  display: flex;
  gap: 8px;
}

.table-empty {
  text-align: center;
  color: var(--color-text-muted);
  padding: 40px 16px !important;
}

.table-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--color-border);
}

.table-avatar-placeholder {
  display: inline-block;
  width: 36px;
  height: 36px;
  line-height: 36px;
  text-align: center;
  border-radius: 50%;
  background: var(--color-surface-hover);
  color: var(--color-text-muted);
  font-size: 0.75rem;
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 1024px) {
  .product-card {
    flex-direction: column;
  }

  .product-media {
    flex: none;
    width: 100%;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.25rem;
  }

  .hero-subtitle {
    font-size: 1.05rem;
  }

  .section {
    padding: 64px 0;
  }

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

  .nav-links {
    gap: 16px;
  }

  .nav-links a {
    font-size: 0.8rem;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .product-card {
    padding: 24px;
  }

  .form-row {
    flex-direction: column;
  }

  /* Admin responsive */
  .admin-sidebar {
    width: 200px;
  }

  .admin-main {
    margin-left: 200px;
    padding: 20px;
  }
}

@media (max-width: 480px) {
  .nav-container {
    padding: 0 16px;
  }

  .nav-links {
    gap: 10px;
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .hero-content {
    padding: 0 16px;
  }

  .btn-primary {
    padding: 12px 24px;
    font-size: 0.9rem;
  }

  .modal {
    padding: 24px;
    margin: 12px;
  }

  .admin-sidebar {
    position: static;
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }

  .admin-layout {
    flex-direction: column;
  }

  .admin-main {
    margin-left: 0;
  }

  .admin-nav {
    flex-direction: row;
    flex-wrap: wrap;
    padding: 8px;
  }

  .admin-nav-item {
    padding: 6px 12px;
    font-size: 0.8rem;
  }
}