/* ==========================================================================
   PROGETTO DELTA SRL - Clean & Corporate Blue Theme
   Engineering & Installation of Hybrid Photo-Wind Systems in Romania
   ========================================================================== */

:root {
  --color-primary: #0b325b;        /* Deep Corporate Navy */
  --color-primary-dark: #071f38;
  --color-secondary: #0284c7;      /* Clean Ocean Blue */
  --color-secondary-hover: #0369a1;
  --color-accent-teal: #0d9488;    /* Wind Energy Teal */
  --color-accent-amber: #d97706;   /* Solar Energy Amber */
  
  --color-bg-body: #f8fafc;
  --color-bg-surface: #ffffff;
  --color-border: #e2e8f0;
  --color-border-subtle: #cbd5e1;
  
  --color-text-main: #0f172a;      /* Slate 900 */
  --color-text-muted: #475569;     /* Slate 600 */
  --color-text-light: #64748b;     /* Slate 500 */
  
  --font-heading: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-body);
  background-color: var(--color-bg-body);
  color: var(--color-text-main);
  overflow-x: hidden;
}

body {
  overflow-x: hidden;
  background-color: var(--color-bg-body);
  color: var(--color-text-main);
}

/* Clean Corporate Cards */
.corporate-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 1rem;
  box-shadow: 0 1px 3px 0 rgba(15, 23, 42, 0.05), 0 1px 2px -1px rgba(15, 23, 42, 0.05);
  transition: all 0.25s ease-in-out;
}

.corporate-card:hover {
  border-color: #cbd5e1;
  box-shadow: 0 10px 25px -5px rgba(11, 50, 91, 0.08), 0 8px 10px -6px rgba(11, 50, 91, 0.04);
  transform: translateY(-2px);
}

.corporate-card-static {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 1rem;
  box-shadow: 0 2px 4px rgba(15, 23, 42, 0.04);
}

/* Navigation */
.corporate-nav {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid #e2e8f0;
}

/* Clean Buttons */
.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
  border: 1px solid var(--color-primary);
  box-shadow: 0 1px 2px 0 rgba(11, 50, 91, 0.15);
  transition: all 0.2s ease;
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  box-shadow: 0 4px 12px 0 rgba(11, 50, 91, 0.2);
}

.btn-secondary {
  background-color: #ffffff;
  color: var(--color-primary);
  border: 1px solid #cbd5e1;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background-color: #f1f5f9;
  border-color: #94a3b8;
  color: var(--color-primary-dark);
}

/* Range input styling for clean simulator */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: #e2e8f0;
  border-radius: 9999px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #0284c7;
  border: 2px solid #ffffff;
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
  transition: all 0.15s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
  background: #0369a1;
}

input[type="range"]::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #0284c7;
  border: 2px solid #ffffff;
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
  transition: all 0.15s ease;
}

/* Language toggle button active style */
.lang-btn.active {
  background-color: #0b325b;
  color: #ffffff;
  font-weight: 600;
}

/* Focus styles for accessibility */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid #0284c7;
  outline-offset: 2px;
}