/* ===================================
   Elexnova - Custom Styles
   =================================== */

/* CSS Custom Properties - Dark Theme Color Palette */
:root {
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  --color-gray-950: #030712;

  --color-blue-300: #93c5fd;
  --color-blue-400: #60a5fa;
  --color-blue-500: #3b82f6;
  --color-blue-600: #2563eb;
  --color-blue-700: #1d4ed8;
  --color-blue-900: #1e3a5f;

  --color-white: #ffffff;
  --color-text-primary: var(--color-gray-100);
  --color-text-secondary: var(--color-gray-300);
  --color-text-muted: var(--color-gray-400);
  --color-bg-primary: var(--color-gray-900);
  --color-bg-secondary: var(--color-gray-800);
  --color-bg-card: var(--color-gray-700);
  --color-accent: var(--color-blue-600);
  --color-accent-hover: var(--color-blue-500);

  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-blue-400);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-blue-300);
}

/* Focus styles for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--color-blue-400);
  outline-offset: 2px;
}

/* Utility classes (fallback if Tailwind fails) */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
}

/* ===================================
   Tag Styles - Domain-Specific Colors
   =================================== */
.tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.025em;
}

.tag-ai-ml {
  background-color: rgba(59, 130, 246, 0.15);
  color: #93c5fd;
}

.tag-electronics {
  background-color: rgba(34, 197, 94, 0.15);
  color: #86efac;
}

.tag-mechatronics {
  background-color: rgba(168, 85, 247, 0.15);
  color: #d8b4fe;
}

.tag-hardware {
  background-color: rgba(249, 115, 22, 0.15);
  color: #fdba74;
}

.tag-software {
  background-color: rgba(6, 182, 212, 0.15);
  color: #67e8f9;
}

/* ===================================
   Solution Card Styles
   =================================== */
.solution-card {
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.solution-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.solution-card img {
  transition: transform var(--transition-slow);
}

.solution-card:hover img {
  transform: scale(1.03);
}

/* ===================================
   Accordion Styles
   =================================== */
.accordion-item {
  transition: box-shadow var(--transition-base);
}

.accordion-item:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.accordion-trigger {
  cursor: pointer;
  border: none;
  background: none;
  transition: background-color var(--transition-base);
}

.accordion-trigger:hover {
  background-color: rgba(255, 255, 255, 0.03);
}

.accordion-icon {
  transition: transform var(--transition-base);
}

.accordion-icon.rotate-180 {
  transform: rotate(180deg);
}

.accordion-content {
  animation: slideDown 200ms ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===================================
   Scroll Animations
   =================================== */
.animate-target {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.animate-target.animate-in {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger animation for grid items */
.solution-card:nth-child(1) {
  transition-delay: 0ms;
}

.solution-card:nth-child(2) {
  transition-delay: 100ms;
}

.solution-card:nth-child(3) {
  transition-delay: 200ms;
}

.solution-card:nth-child(4) {
  transition-delay: 300ms;
}

.accordion-item:nth-child(1) {
  transition-delay: 0ms;
}

.accordion-item:nth-child(2) {
  transition-delay: 80ms;
}

.accordion-item:nth-child(3) {
  transition-delay: 160ms;
}

.accordion-item:nth-child(4) {
  transition-delay: 240ms;
}

.accordion-item:nth-child(5) {
  transition-delay: 320ms;
}

/* ===================================
   Button Hover Effects
   =================================== */
button,
.btn {
  transition: background-color var(--transition-base), transform var(--transition-base);
}

button:active,
.btn:active {
  transform: scale(0.98);
}

/* ===================================
   Contact Form Validation
   =================================== */
.form-field-invalid {
  border-color: #f87171 !important;
}

.form-error {
  margin: 0.4rem 0 0;
  color: #fca5a5;
  font-size: 0.875rem;
  line-height: 1.35;
}

/* ===================================
   Video Embed Styles (for future use)
   =================================== */
.video-wrapper {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  background-color: #000;
  border-radius: 0.75rem 0.75rem 0 0;
  overflow: hidden;
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* ===================================
   Responsive Adjustments
   =================================== */
@media (max-width: 768px) {
  .solution-card:hover {
    transform: none;
  }
}

.google-rating-badge {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.18);
}

.google-rating-badge:hover {
  transform: translateY(-1px);
  border-color: rgba(156, 163, 175, 0.5);
}