/* ==========================================================================
   SnowWadi AC & HVAC Engineering - Minimal Luxury Design System
   Clean, Architectural, Minimalist Aesthetic (Neutral Monochrome + Refined Emerald Accent)
   ========================================================================== */

:root {
  /* Minimal Neutral & Refined Emerald Palette */
  --color-canvas: #fafafa;
  --color-canvas-alt: #f4f5f7;
  --color-surface: #ffffff;
  --color-ink: #0f172a;
  --color-slate: #475569;
  --color-slate-light: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-subtle: #f1f5f9;
  
  --color-primary: #047857;          /* Refined Deep Forest Emerald */
  --color-primary-hover: #065f46;
  --color-primary-soft: #ecfdf5;
  --color-accent-red: #dc2626;        /* Subtle status red */
  --color-whatsapp: #25d366;
  
  --font-heading: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
}

/* Base Reset */
html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  color: var(--color-slate);
  background-color: var(--color-canvas);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  line-height: 1.6;
  background-color: var(--color-canvas);
}

/* Minimalist Clean Cards */
.clean-panel {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04), 0 1px 2px rgba(15, 23, 42, 0.02);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.clean-panel-hover:hover {
  border-color: #cbd5e1;
  box-shadow: 0 12px 28px -6px rgba(15, 23, 42, 0.08), 0 4px 8px -2px rgba(15, 23, 42, 0.03);
  transform: translateY(-3px);
}

/* Subtle Glass Header */
.clean-nav {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid #e2e8f0;
}

/* Form Inputs */
.clean-input {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  padding: 0.8rem 1.1rem;
  font-size: 0.925rem;
  color: var(--color-ink);
  transition: all 0.2s ease;
  width: 100%;
}

.clean-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(4, 120, 87, 0.12);
}

/* Minimal Buttons */
.btn-primary {
  background: var(--color-ink);
  color: #ffffff;
  font-family: var(--font-heading);
  font-weight: 600;
  border-radius: 12px;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}
.btn-primary:hover {
  background: #1e293b;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
}

.btn-emerald {
  background: var(--color-primary);
  color: #ffffff;
  font-family: var(--font-heading);
  font-weight: 600;
  border-radius: 12px;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}
.btn-emerald:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(4, 120, 87, 0.2);
}

.btn-outline {
  background: #ffffff;
  border: 1px solid var(--color-border);
  color: var(--color-ink);
  font-family: var(--font-heading);
  font-weight: 600;
  border-radius: 12px;
  transition: all 0.2s ease;
}
.btn-outline:hover {
  background: #f8fafc;
  border-color: #94a3b8;
  transform: translateY(-1px);
}

.btn-whatsapp {
  background: #25d366;
  color: #ffffff;
  font-family: var(--font-heading);
  font-weight: 600;
  border-radius: 12px;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}
.btn-whatsapp:hover {
  background: #20ba59;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.25);
}

/* Minimal Eyebrow Badge */
.clean-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  color: #334155;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}

/* Status Pulse Dot */
.live-pulse {
  position: relative;
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 9999px;
  background-color: var(--color-primary);
}

.live-pulse::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  border-radius: 9999px;
  border: 1.5px solid var(--color-primary);
  animation: livePing 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

@keyframes livePing {
  0% { transform: scale(0.8); opacity: 1; }
  100% { transform: scale(2.2); opacity: 0; }
}

/* Troubleshooter Chips */
.symptom-card {
  cursor: pointer;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  transition: all 0.2s ease;
}

.symptom-card:hover {
  border-color: #94a3b8;
  background: #f8fafc;
}

.symptom-card.selected {
  border-color: var(--color-primary);
  background: #f0fdf4;
  box-shadow: 0 0 0 2px rgba(4, 120, 87, 0.15);
}

/* Clean Accordion */
.accordion-content {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease;
  opacity: 0;
}

.accordion-item.active .accordion-content {
  grid-template-rows: 1fr;
  opacity: 1;
}

.accordion-inner {
  overflow: hidden;
}

.accordion-icon {
  transition: transform 0.25s ease;
}

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

/* Mobile Sticky Bottom Bar */
@media (max-width: 767px) {
  body {
    padding-bottom: 74px;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}