/* ==========================================================================
   GOPI POWER SOLUTIONS - MASTER CORPORATE STYLESHEET
   Clean White / Black Professional Theme | Executive Engineering Design
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@200;300;400;500;600;700;800&family=Outfit:wght@100;200;300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Crisp White & Black Core Palette (Light Mode Default) */
  --bg-body: #ffffff;
  --bg-surface: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #fafafa;
  --bg-nav: rgba(255, 255, 255, 0.92);
  --border-color: #e5e7eb;
  --border-light: #f1f5f9;
  --border-hover: #171717;
  
  --text-main: #0a0a0a;
  --text-muted: #4b5563;
  --text-sub: #6b7280;
  
  --brand-black: #000000;
  --brand-charcoal: #171717;
  --brand-slate: #334155;
  --brand-accent: #0f172a;
  
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --shadow-subtle: 0 1px 3px 0 rgba(0, 0, 0, 0.04), 0 1px 2px -1px rgba(0, 0, 0, 0.04);
  --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.04), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-elevated: 0 20px 25px -5px rgba(0, 0, 0, 0.06), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
}

/* Dark Mode Overrides (High-Contrast Black & Crisp White) */
html.dark {
  --bg-body: #0a0a0a;
  --bg-surface: #121212;
  --bg-card: #141414;
  --bg-card-hover: #1a1a1a;
  --bg-nav: rgba(10, 10, 10, 0.92);
  --border-color: #262626;
  --border-light: #1f1f1f;
  --border-hover: #ffffff;
  
  --text-main: #ffffff;
  --text-muted: #a3a3a3;
  --text-sub: #737373;
  
  --brand-black: #ffffff;
  --brand-charcoal: #f5f5f5;
  --brand-slate: #94a3b8;
  --brand-accent: #e2e8f0;
  
  --shadow-subtle: 0 1px 3px 0 rgba(0, 0, 0, 0.5);
  --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-elevated: 0 20px 25px -5px rgba(0, 0, 0, 0.7);
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-body);
  background-color: var(--bg-body);
  color: var(--text-main);
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

body {
  overflow-x: hidden;
  line-height: 1.6;
  background-color: var(--bg-body);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  letter-spacing: -0.025em;
  font-weight: 700;
  color: var(--text-main);
}

.font-mono {
  font-family: var(--font-mono);
}

/* Clean Corporate Cards */
.corp-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-normal);
}

.corp-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-elevated);
}

.corp-nav {
  background-color: var(--bg-nav);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

/* Wide Thin Editorial Masthead with Large-Screen Single-Line Guarantee */
.brand-masthead {
  font-family: 'Outfit', sans-serif;
  font-weight: 200;
  text-transform: uppercase;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  width: 100%;
  text-align: center;
  color: var(--text-main);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  user-select: none;
  line-height: 1.25;
  column-gap: 0.35em;
  row-gap: 0.25rem;
  font-size: clamp(1.15rem, 2.5vw, 2.35rem);
  letter-spacing: 0.2em;
  padding-left: 0.2em; /* balances visual center for wide tracking */
}

.brand-phrase {
  white-space: nowrap;
  display: inline-block;
}

.brand-word {
  white-space: nowrap;
  display: inline-block;
}

@media (min-width: 640px) {
  .brand-masthead {
    letter-spacing: 0.28em;
    padding-left: 0.28em;
    column-gap: 0.45em;
  }
}

/* Large Screens: SOLUTIONS stays on ONE line with GOPI POWER */
@media (min-width: 1024px) {
  .brand-masthead {
    flex-wrap: nowrap; /* Stays in one single line on large screens */
    letter-spacing: 0.42em;
    padding-left: 0.42em;
    column-gap: 0.65em;
    font-size: clamp(1.75rem, 2.6vw, 2.5rem);
  }
}

@media (min-width: 1280px) {
  .brand-masthead {
    letter-spacing: 0.52em;
    padding-left: 0.52em;
    column-gap: 0.8em;
    font-size: 2.45rem;
  }
}

@media (min-width: 1536px) {
  .brand-masthead {
    letter-spacing: 0.65em;
    padding-left: 0.65em;
    column-gap: 0.95em;
    font-size: 2.75rem;
  }
}

.brand-masthead:hover {
  opacity: 0.85;
}

/* Hero Canvas (Architectural Minimal Grid & Particles) */
#heroCanvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  opacity: 0.7;
}

/* Executive Black & White Buttons */
.btn-primary {
  background-color: #000000;
  color: #ffffff;
  border: 1px solid #000000;
  font-weight: 600;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}
.btn-primary:hover {
  background-color: #171717;
  border-color: #171717;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}
html.dark .btn-primary {
  background-color: #ffffff;
  color: #000000;
  border-color: #ffffff;
}
html.dark .btn-primary:hover {
  background-color: #e5e5e5;
  border-color: #e5e5e5;
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

.btn-secondary {
  background-color: #ffffff;
  color: #0a0a0a;
  border: 1px solid #d1d5db;
  font-weight: 600;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
  text-decoration: none;
  cursor: pointer;
}
.btn-secondary:hover {
  background-color: #f9fafb;
  border-color: #111827;
  transform: translateY(-1px);
}
html.dark .btn-secondary {
  background-color: #141414;
  color: #ffffff;
  border-color: #333333;
}
html.dark .btn-secondary:hover {
  background-color: #1a1a1a;
  border-color: #ffffff;
}

/* Minimalist Tab Pills */
.tab-pill {
  transition: all var(--transition-fast);
  border-radius: 9999px;
  padding: 0.5rem 1.25rem;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-muted);
}
.tab-pill.active {
  background: var(--text-main);
  color: var(--bg-body);
  border-color: var(--text-main);
}
.tab-pill:not(.active):hover {
  border-color: var(--text-main);
  color: var(--text-main);
}

/* Client Marquee Carousel */
.marquee-container {
  overflow: hidden;
  user-select: none;
  display: flex;
  gap: 2rem;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.marquee-content {
  flex-shrink: 0;
  display: flex;
  justify-content: space-around;
  min-width: 100%;
  gap: 2rem;
  animation: scroll-marquee 40s linear infinite;
}

.marquee-container:hover .marquee-content {
  animation-play-state: paused;
}

@keyframes scroll-marquee {
  from { transform: translateX(0); }
  to { transform: translateX(calc(-100% - 2rem)); }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 7px;
  height: 7px;
}
::-webkit-scrollbar-track {
  background: var(--bg-body);
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #64748b;
}
html.dark ::-webkit-scrollbar-thumb {
  background: #333333;
}
html.dark ::-webkit-scrollbar-thumb:hover {
  background: #555555;
}

/* Floating Navigation Action Tool */
.floating-action-bar {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  z-index: 99;
}

.fab-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-main);
}
.fab-btn:hover {
  transform: translateY(-2px);
  border-color: var(--text-main);
}
.fab-whatsapp {
  background: #25d366;
  color: #ffffff;
  border-color: #25d366;
}
.fab-call {
  background: #000000;
  color: #ffffff;
  border-color: #000000;
}
html.dark .fab-call {
  background: #ffffff;
  color: #000000;
  border-color: #ffffff;
}

/* Modals */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 680px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.2);
  transform: scale(0.97) translateY(8px);
  transition: transform 0.25s ease;
}

.modal-backdrop.open .modal-card {
  transform: scale(1) translateY(0);
}

/* Print Styling */
@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }
  .corp-nav, .floating-action-bar, #heroCanvas, .no-print {
    display: none !important;
  }
  .corp-card {
    border: 1px solid #ccc !important;
    box-shadow: none !important;
    background: #fff !important;
  }
}