/* ============================================================
   GODAVARI ENGINEERING — Design Tokens (theme.css)
   ============================================================ */
:root {
  --color-primary:                 #C03030;
  --color-primary-container:       #A82828;
  --color-on-primary-container:    #FBEAEA;
  --color-on-primary:              #ffffff;
  --color-secondary:               #64605C;
  --color-on-secondary:            #ffffff;
  --color-tertiary:                #1a1614;
  --color-on-surface:              #1b1c1a;
  --color-on-surface-variant:      #504846;
  --color-background:              #ffffff;
  --color-surface:                 #F9F7F5;
  --color-surface-dim:             #E8E6E3;
  --color-surface-container-low:   #F4F1EF;
  --color-surface-container:       #ECEAE7;
  --color-surface-container-high:  #E5E3E0;
  --color-surface-container-highest: #DEDAD7;
  --color-red-tint:                #FBEAEA;
  --color-dark-surface:            #0F0D0D;
  --color-outline:                 #8C8480;
  --color-outline-variant:         #E0D8D8;
  --color-inverse-surface:         #30312f;
  --color-inverse-on-surface:      #f2f0ed;
  --color-white:                   #ffffff;
  --color-black:                   #000000;
  --font-display:  "Space Grotesk", system-ui, -apple-system, sans-serif;
  --font-mono:     "Courier New", monospace;
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:   0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg:   0 8px 24px rgba(0,0,0,0.12);
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;
}

/* ============================================================
   GODAVARI ENGINEERING — Global Styles (styles.css)
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

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

::selection { background-color: var(--color-primary-container); color: var(--color-white); }

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

a { color: inherit; text-decoration: none; }

/* Material Symbols */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  display: inline-block;
  vertical-align: middle;
  line-height: 1;
}

/* Hero title fluid size */
.hero-title {
  font-size: clamp(2.25rem, 4.5vw, 4rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
}

/* Dot-grid background */
.industrial-grid {
  background-image: radial-gradient(circle, #D1CDC7 1px, transparent 1px);
  background-size: 32px 32px;
}

/* Hide scrollbar */
.scrollbar-hide { -ms-overflow-style: none; scrollbar-width: none; }
.scrollbar-hide::-webkit-scrollbar { display: none; }

/* Navbar shadow on scroll */
#main-nav.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.08); }

/* Nav link states */
.nav-link-active {
  color: #C03030;
  border-bottom: 2px solid #C03030;
  padding-bottom: 2px;
}
.nav-link-idle { color: #64605C; }
.nav-link-idle:hover { color: #C03030; }

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.55s ease, transform 0.55s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* Form focus */
input:focus, select:focus, textarea:focus { outline: none; }

/* Zebra table */
.zebra-table tr:nth-child(even) { background-color: var(--color-surface-container-low); }

/* Form success banner */
.form-success {
  display: none;
  background: #f0fdf4;
  border: 1px solid #86efac;
  color: #166534;
  padding: 1rem 1.5rem;
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
  font-weight: 600;
}
.form-success.is-visible { display: block; }

/* Print */
@media print {
  #main-nav, footer, #mobile-menu { display: none !important; }
}

/* ============================================================
   GODAVARI ENGINEERING — Responsive (responsive.css)
   ============================================================ */

/* Mobile Navigation Overlay */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(27, 28, 26, 0.65);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 250ms ease, visibility 250ms ease;
}
.mobile-menu.is-open { opacity: 1; visibility: visible; }

.mobile-menu__panel {
  position: absolute;
  top: 0;
  right: 0;
  width: 85%;
  max-width: 320px;
  height: 100%;
  background: var(--color-white);
  padding: 1.5rem;
  transform: translateX(100%);
  transition: transform 280ms cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
}
.mobile-menu.is-open .mobile-menu__panel { transform: translateX(0); }

.mobile-menu__link {
  display: flex;
  align-items: center;
  padding: 0.875rem 0;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-on-surface);
  border-bottom: 1px solid var(--color-outline-variant);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}
.mobile-menu__link:hover, .mobile-menu__link.is-active {
  color: var(--color-primary-container);
  padding-left: 0.5rem;
}

/* Tablet */
@media (min-width: 640px) {
  .hero-title { font-size: clamp(2.5rem, 5vw, 4rem); }
}

/* Desktop */
@media (min-width: 1024px) {
  .hero-title { font-size: clamp(3rem, 4vw, 4.5rem); }
}