/* ================================
   GLOBAL STYLES & THEME
=================================== */
:root {
  /* Midnight Plum theme */
  --bg-dark: #070812;         /* page background */
  --surface-1: #0f1622;      /* cards / surfaces */
  --surface-2: #0b1220;      /* alternate surfaces */
  /* Accents: teal-forward palette (user prefers more teal than pink) */
  --accent: #00c2b3;         /* bright teal */
  --accent-2: #008f80;       /* deeper teal for secondary highlights */
  --accent-rgb: 0,194,179;   /* rgb for rgba() uses (accent) */
  --accent-contrast: #031018; /* dark text used on bright accent backgrounds */
  --muted: #9aa6b2;          /* muted text */
  --white: #eef6ff;
  --glass-bg: rgba(255,255,255,0.03);
  --shadow: 0 10px 30px rgba(2,6,23,0.6);
  --radius: 14px;
  --transition: 0.28s ease;
  /* Back-compat aliases for older selectors in the stylesheet */
  --text-light: var(--muted);
  --gold: var(--accent);
  --gold-light: rgba(var(--accent-rgb), 0.14);
  --navy-mid: var(--surface-2);
  /* Brand accent for textual wordmark; override to match your provided logo if needed.
    Default set to a warm orange to match the provided wordmark. Change if you want a different shade. */
  --brand-accent: #ff6a00;
  --brand-accent-rgb: 255,106,0;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Poppins', sans-serif;
  background: radial-gradient(1200px 600px at 10% 10%, rgba(0,0,0,0.35), transparent), linear-gradient(180deg, var(--bg-dark), var(--surface-2) 60%);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Containers */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

/* Glass effect reusable class */
.glass-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.04);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.glass-card:hover {
  transform: translateY(-6px);
  border-color: rgba(var(--accent-rgb), 0.18);
}

/* Buttons */
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: var(--accent-contrast);
  font-weight: 700;
  padding: 12px 28px;
  border: none;
  border-radius: calc(var(--radius) - 4px);
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  box-shadow: 0 6px 30px rgba(var(--accent-rgb), 0.12);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 40px rgba(var(--accent-rgb), 0.18);
}

/* ================================
   NAVIGATION
=================================== */
header {
  background: linear-gradient(180deg, rgba(8,10,14,0.7), rgba(6,8,12,0.55));
  backdrop-filter: blur(12px);
  box-shadow: 0 6px 24px rgba(0,0,0,0.6);
  position: sticky;
  top: 0;
  z-index: 1300; /* raise header above mobile overlay so hamburger stays clickable */
  /* ensure a stable header height so elements can be vertically centered */
  min-height: 64px;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.logo img {
  /* Keep logo height fixed and preserve aspect ratio to avoid squishing wide logos */
  height: 45px;
  width: auto;
  max-width: 180px; /* prevents extremely wide images from overflowing */
  border-radius: 6px;
  display: inline-block;
}

/* Inline SVG fallback should match the same sizing as the external image */
#logo-inline svg {
  height: 45px;
  width: auto;
  display: block;
}

/* Ensure both the external image and inline fallback align with the title */
#logo-img, #logo-inline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Small visible brand text beside logo to clarify full company name without duplicating the logo wordmark */
.brand-text {
  /* Remove extra left margin, rely on .logo gap for spacing; gap will be smaller in compact mode */
  margin-left: 0;
  font-size: 1.02rem;
  color: var(--white);
  font-weight: 700;
  letter-spacing: 0.4px;
  display: inline-flex;
  align-items: center; /* vertically center text with the logo */
  line-height: 1;
}

/* On very small screens, hide the extra text to preserve header space */
@media (max-width: 420px) {
  .brand-text { display: none; }
}

/* Brand split styling: 'Rishiraj' in accent, 'Enterprises' muted */
.brand-main {
  /* Use a dedicated brand accent so you can match the wordmark to your supplied logo color easily */
  color: var(--brand-accent);
  margin-right: 0.28rem;
}
.brand-suffix {
  /* Use the same brand hue with slight opacity so the two-part wordmark reads cohesive but slightly tiered */
  color: rgba(var(--brand-accent-rgb), 0.92);
  font-weight: 600;
  font-size: 0.95rem;
}

/* Header compact/scroll state: show compact mark and wordmark text; hide full logo */
header.scrolled .brand-text.header-only {
  opacity: 1;
  visibility: visible;
}
header .brand-text.header-only {
  opacity: 0;
  visibility: hidden;
  transition: opacity 220ms ease, visibility 220ms ease;
}

/* Full logo visible by default; hide when scrolled */
#logo-full { display: inline-block; }
#logo-small, #logo-inline { display: none; }
header.scrolled #logo-full { display: none; }
header.scrolled #logo-small { display: inline-block; }
header.scrolled #logo-inline { display: inline-flex; }

/* Slight size differences in compact header */
header.scrolled .logo img { height: 36px; }

/* Reduce gap in compact header so small mark sits closer to the wordmark */
header.scrolled .logo { gap: 0.28rem; }

/* Ensure nav items (links) are vertically centered next to the logo */
#nav-menu, #nav-menu ul {
  display: flex;
  align-items: center;
}

/* Mobile menu button: ensure SVG is centered and aligned with header text */
#mobile-menu {
  box-sizing: content-box; /* keep visual size predictable */
}
#mobile-menu svg {
  display: block;
  margin: 0 auto;
  vertical-align: middle;
}

/* Slight adjustment for very small screens where header stacks */
@media (max-width: 420px) {
  header { min-height: 56px; }
  #mobile-menu { width: 36px; height: 36px; }
  header.scrolled .logo img { height: 32px; }
}


.logo h1 {
  font-size: 1.4rem;
  color: var(--accent);
  letter-spacing: 0.5px;
}

#nav-menu ul {
  display: flex;
  list-style: none;
  gap: 1.8rem;
}

#nav-menu a {
  color: var(--text-light);
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
  font-size: 1rem;
}

#nav-menu a:hover,
#nav-menu a.active {
  color: var(--accent);
}

/* Mobile Nav */
#mobile-menu {
  /* Hidden by default on desktop; shown in mobile media query below */
  display: none;
  width: 44px;
  height: 44px;
  color: var(--accent);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
}

@media (max-width: 768px) {
  /* Mobile overlay nav: fixed full-screen panel to avoid height/transition race conditions */
  /* Position the overlay below the header so the header (and hamburger) remains clickable */
  /* Simpler mobile dropdown that pushes content down (never covers the header) */
  /* make the nav container the positioning context and let nav-menu fill available space
     so the dropdown aligns with the header content and doesn't appear as a narrow column */
  /* Simpler: make the nav list in-flow so it pushes content and never overlays the header */
  .nav-container { position: relative; }
  #nav-menu { position: static; flex: none; }
  #nav-menu ul {
    position: static;
    display: none;
    flex-direction: column;
    width: 100%;
    background: var(--navy-mid);
    gap: 1rem;
    padding: 0.5rem 1rem 1rem 1rem;
    box-shadow: 0 8px 30px rgba(0,0,0,0.45);
    border-top: 1px solid rgba(255,255,255,0.03);
  }

  #nav-menu.show ul {
    display: flex;
  }

  /* Show mobile menu button on small screens */
  #mobile-menu {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    z-index: 1400; /* ensure hamburger stays on top */
    position: relative;
  }
}

/* Tighter, touch-friendly mobile button sizing and compact header state */
@media (max-width: 480px) {
  #mobile-menu {
    width: 40px;
    height: 40px;
    padding: 6px;
  }
}

/* Mobile drawer: full-width, fixed, appears below header and does not cover it */
#mobile-drawer {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  top: var(--header-h, 64px);
  height: calc(100vh - var(--header-h, 64px));
  /* glassmorphic backdrop */
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  backdrop-filter: blur(10px) saturate(120%);
  background-blend-mode: overlay;
  border-top: 1px solid rgba(255,255,255,0.04);
  box-shadow: 0 12px 40px rgba(0,0,0,0.6), inset 0 1px 0 rgba(255,255,255,0.02);
  z-index: 1200; /* below header (1300) */
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  align-items: flex-start;
  padding: 1.2rem 0;
  transform: translateY(-6px);
  opacity: 0;
  transition: transform 300ms cubic-bezier(.22,.9,.3,1), opacity 300ms ease;
}

#mobile-drawer.open { display: block; transform: translateY(0); opacity: 1; }

#mobile-drawer ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 0 1.2rem;
}

#mobile-drawer a {
  color: var(--white);
  font-size: 1.25rem;
  padding: 0.9rem 0.6rem;
  display: block;
  border-radius: 10px;
  transition: background 180ms ease, transform 200ms ease;
}

#mobile-drawer a:hover,
#mobile-drawer a:focus {
  background: rgba(255,255,255,0.02);
  transform: translateY(-2px);
}

/* Staggered item animation */
@keyframes slideInUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

#mobile-drawer.open ul li a { opacity: 0; transform: translateY(8px); }
#mobile-drawer.open ul li:nth-child(1) a { animation: slideInUp 360ms ease 60ms forwards; }
#mobile-drawer.open ul li:nth-child(2) a { animation: slideInUp 360ms ease 120ms forwards; }
#mobile-drawer.open ul li:nth-child(3) a { animation: slideInUp 360ms ease 180ms forwards; }
#mobile-drawer.open ul li:nth-child(4) a { animation: slideInUp 360ms ease 240ms forwards; }
#mobile-drawer.open ul li:nth-child(5) a { animation: slideInUp 360ms ease 300ms forwards; }

/* Respect user preference for reduced motion */
@media (prefers-reduced-motion: reduce) {
  #mobile-drawer,
  #mobile-drawer.open,
  #mobile-drawer ul li a { transition: none !important; animation: none !important; transform: none !important; }
}

/* Closing state: animate items out and collapse the drawer smoothly */
#mobile-drawer.closing { opacity: 0; transform: translateY(-6px); transition: transform 260ms cubic-bezier(.22,.9,.3,1), opacity 260ms ease; }
#mobile-drawer.closing ul li a { animation: none !important; opacity: 0; transform: translateY(8px); transition: transform 200ms ease, opacity 200ms ease; }
#mobile-drawer.closing ul li:nth-child(1) a { transition-delay: 0ms; }
#mobile-drawer.closing ul li:nth-child(2) a { transition-delay: 40ms; }
#mobile-drawer.closing ul li:nth-child(3) a { transition-delay: 80ms; }
#mobile-drawer.closing ul li:nth-child(4) a { transition-delay: 120ms; }
#mobile-drawer.closing ul li:nth-child(5) a { transition-delay: 160ms; }

/* Slight separation from header on small screens */
@media (max-width: 768px) {
  #mobile-drawer { top: var(--header-h, 64px); }
}

/* mobile close button removed — hamburger toggles the menu */

/* When header is compact, slightly reduce hamburger size to keep header dense */
header.scrolled #mobile-menu {
  width: 38px;
  height: 38px;
}

/* Ensure the SVG inside the button scales and is vertically centered */
#mobile-menu svg {
  width: 22px;
  height: 14px;
  display: block;
}

/* Slight hover background for affordance */
#mobile-menu:hover {
  background: rgba(255,255,255,0.03);
}

/* ================================
   HERO SECTION
=================================== */
.hero-section {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  /* hero uses a local raster so the page works offline */
  background: url("../assets/hero.jpg") center/cover no-repeat;
  background-size: cover;
  position: relative;
}

.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(10, 15, 31, 0.8);
  backdrop-filter: blur(6px);
}

.hero-content {
  position: relative;
  z-index: 2;
  color: var(--white);
  max-width: 700px;
  animation: fadeInUp 1.2s ease;
}

.hero-content h2 {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--accent-2);
  margin-bottom: 1rem;
}

.hero-content p {
  color: var(--text-light);
  margin-bottom: 2rem;
  font-size: 1.1rem;
}

/* NOTE: `fadeInUp` keyframes already defined earlier for hero animations.
   Keep a single definition above (near hero section) to avoid duplicates. */
/* ================================
   SECTION STYLES
=================================== */
section {
  padding: 5rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  font-size: 2.2rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.section-header p {
  color: var(--text-light);
  font-size: 1.1rem;
  opacity: 0.8;
}

/* ================================
   ABOUT SECTION
=================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 3rem;
}

.about-grid img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.about-text p {
  margin-bottom: 1.2rem;
  color: var(--text-light);
  line-height: 1.8;
}

.about-text .btn-primary {
  margin-top: 1rem;
}

@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
}

/* ================================
   SERVICES SECTION
=================================== */
/* ✨ Our Services — Modern Premium Glass Style */
.services {
  margin: 5rem auto 2rem auto;
  padding: 4rem 5%;
  background: transparent;
  position: relative;
}

.services h2 {
  font-size: 2.2rem;
  color: var(--accent);
  text-align: center;
  margin-bottom: 2.5rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
}

.service-card {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
  border-radius: 1.2rem;
  padding: 2rem;
  backdrop-filter: blur(16px);
  box-shadow: 0 4px 25px rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 215, 0, 0.12);
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at top left, rgba(var(--accent-rgb), 0.08), transparent 70%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.service-card:hover::before {
  opacity: 1;
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 12px 48px rgba(var(--accent-rgb), 0.12);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
}

.service-card i {
  font-size: 2.5rem;
  color: var(--accent);
  margin-bottom: 1.2rem;
  display: block;
}

.service-card h3 {
  color: var(--white);
  font-size: 1.4rem;
  margin-bottom: 0.8rem;
  font-weight: 600;
}

.service-card p {
  color: var(--text-light);
  font-size: 1rem;
  line-height: 1.6;
  opacity: 0.9;
}

/* 🧩 Fix section spacing below services */
.projects {
  margin-top: 6rem;
}

/* 📱 Responsive tweak */
@media (max-width: 768px) {
  .services {
    padding: 3rem 1.5rem;
  }

  .service-card {
    padding: 1.6rem;
  }

  .service-card i {
    font-size: 2rem;
  }
}

/* ✨ Featured Projects — modern glass grid layout */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 10px 34px rgba(0,0,0,0.6);
  border-color: rgba(var(--accent-rgb), 0.18);
}

.project-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  filter: brightness(0.9);
  transition: filter 0.3s ease;
}

.project-card:hover .project-image {
  filter: brightness(1.05);
}

.project-content {
  padding: 1.4rem 1.6rem;
}

.project-content h3 {
  font-size: 1.2rem;
  color: var(--accent-2);
  margin-bottom: 0.4rem;
}

.project-content p {
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* 🌌 Contact Section - Modern Navy + Gold Theme */
.contact-section {
  padding: 6rem 5%;
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--surface-2) 100%);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: stretch;
  max-width: 1200px;
  margin: 0 auto;
}

.glass-box {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 18px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 2rem;
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.3);
  transition: 0.4s ease;
}

.glass-box:hover {
  transform: translateY(-6px);
  box-shadow: 0 0 40px rgba(var(--accent-rgb), 0.08);
}

.contact-info h3 {
  color: var(--accent);
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.contact-info p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 0.8rem;
  line-height: 1.6;
}

.contact-form form {
  display: flex;
  flex-direction: column;
}

.form-row {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
}

.form-row input,
.form-row select {
  flex: 1;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--white); /* Brighter for readability */
  font-size: 1rem;
  outline: none;
  transition: 0.3s;
  appearance: none;
}

/* Make dropdown arrow visible + gold accent */
.contact-form select {
  background-image: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.1)),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23d4af37' viewBox='0 0 24 24'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1rem;
  color-scheme: dark;
  cursor: pointer;
}

/* Dropdown text contrast */
.contact-form select option {
  background: var(--surface-2);
  color: var(--white);
}

/* Focus glow */
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 12px rgba(var(--accent-rgb), 0.14);
  background: rgba(255, 255, 255, 0.12);
}


.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--gold);
  box-shadow: 0 0 10px rgba(212, 175, 55, 0.3);
  background: rgba(255, 255, 255, 0.12);
}

.contact-form button {
  margin-top: 0.5rem;
  padding: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: var(--accent-contrast);
  font-weight: 700;
  font-size: 1.05rem;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: 0.28s ease;
}

.contact-form button:hover {
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  transform: scale(1.02);
}

@media (max-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .form-row {
    flex-direction: column;
  }
}

/* ================================
   FOOTER
=================================== */
footer {
  background: rgba(255, 255, 255, 0.03);
  padding: 3rem 0;
  text-align: center;
  color: var(--text-light);
  font-size: 0.95rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

footer p {
  opacity: 0.7;
}

footer a {
  color: var(--gold);
  text-decoration: none;
  margin: 0 8px;
  transition: var(--transition);
}

footer a:hover {
  color: var(--white);
}

/* ================================
   BACK TO TOP BUTTON
=================================== */
#backToTop {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--accent);
  color: var(--accent-contrast);
  padding: 0.8rem 1rem;
  border-radius: 50%;
  font-size: 1.3rem;
  box-shadow: 0 8px 30px rgba(var(--accent-rgb), 0.18);
  cursor: pointer;
  transition: var(--transition);
  z-index: 1000;
  display: none;
}

#backToTop:hover {
  background: var(--white);
  color: var(--accent-contrast);
  transform: translateY(-4px);
}

/* ================================
   ANIMATIONS
=================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 1s ease forwards;
}

/* ================================
   RESPONSIVE ADJUSTMENTS
=================================== */
@media (max-width: 768px) {
  header {
    padding: 1rem 0;
  }

  /* Keep mobile nav rules targeted to #nav-menu to avoid conflicting selectors
     and ensure the JS-driven .show class controls visibility. */
  #nav-menu ul {
    flex-direction: column;
    background: rgba(0, 0, 0, 0.8);
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    /* visibility / max-height transitions are handled by the earlier #nav-menu / #nav-menu.show rules */
  }

  .menu-toggle {
    display: block;
    color: var(--accent);
    font-size: 1.6rem;
    cursor: pointer;
  }

  .hero {
    height: 80vh;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .services-grid,
  .projects-grid,
  .about-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }
}

/* ================================
   SMOOTH SCROLL BEHAVIOR
=================================== */
html {
  scroll-behavior: smooth;
}
/* ============================================================
   🔮 ANIMATION + INTERACTION STYLES (Part 4)
   For fade-ins, hover glow, and smooth glass effects
============================================================ */

/* Utility: visually hidden for accessible labels */
.visually-hidden {
  position: absolute !important;
  height: 1px; width: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  white-space: nowrap;
  border: 0; padding: 0; margin: -1px;
}

/* ---------- Fade Animations ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease-out;
}
.fade-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: all 0.8s ease-out;
}
.fade-right {
  opacity: 0;
  transform: translateX(30px);
  transition: all 0.8s ease-out;
}
.show {
  opacity: 1 !important;
  transform: translate(0) !important;
}

/* ---------- Buttons ---------- */
button,
.btn-primary,
.btn {
  position: relative;
  display: inline-block;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-weight: 700;
  font-size: 1rem;
  border-radius: 12px;
  padding: 12px 28px;
  background: linear-gradient(145deg, var(--accent), var(--accent-2));
  color: var(--accent-contrast);
  box-shadow: 0 8px 28px rgba(var(--accent-rgb), 0.12);
  transition: all 0.28s ease;
  overflow: hidden;
}

button:hover,
.btn:hover {
  box-shadow: 0 0 30px rgba(var(--accent-rgb), 0.22);
  transform: translateY(-3px);
  background: linear-gradient(145deg, var(--accent-2), var(--accent));
}

button:active,
.btn:active {
  transform: scale(0.97);
}

/* ---------- Glass Blur Cards ---------- */
.glass-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border: 1px solid rgba(255,255,255,0.04);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.6);
  transition: all 0.3s ease;
}

.glass-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 10px 28px rgba(var(--accent-rgb), 0.12);
}

/* ---------- Section Backgrounds ---------- */
section {
  position: relative;
  z-index: 1;
}
section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(8,12,20,0.75), rgba(4,6,10,0.9));
  z-index: -1;
}

/* ---------- Back to Top Button ---------- */
#backToTop {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: none;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: 0 0 20px rgba(var(--accent-rgb), 0.18);
  transition: all 0.3s ease;
  display: none;
  z-index: 999;
}

#backToTop.show {
  display: flex;
  justify-content: center;
  align-items: center;
}

#backToTop:hover {
  transform: translateY(-4px);
  box-shadow: 0 0 30px rgba(var(--accent-rgb), 0.28);
  color: var(--accent-contrast);
}

/* ---------- Transition policy (performance friendly) ---------- */
/*
  Avoid applying transitions to the universal selector (*) — that forces
  the browser to create composite layers for nearly every element which
  can hurt scrolling and animation performance on low-end devices.

  Use the small utility below to opt-in to smoother transitions for
  specific areas, or prefer explicit per-component transition rules.
*/
.transitions * {
  /* Opt-in utility: add the `transitions` class to a container when you
     want to animate many children at once (use sparingly). */
  transition: color 220ms ease, background-color 220ms ease, transform 260ms cubic-bezier(.22,.9,.3,1), opacity 220ms ease, box-shadow 260ms ease;
}

/* ---------- Page Scrollbar ---------- */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  border-radius: 8px;
}
::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
}

/* ---------- Text Glow ---------- */
h1, h2, h3 {
  color: var(--white);
  text-shadow: 0 0 12px rgba(var(--accent-rgb), 0.18);
}
p, li, a {
  color: var(--muted);
}

/* 🌌 SECTION SPACING FIX — keeps sections cleanly separated */
/* 🧭 Refined section spacing for compact, modern layout */
section {
  padding: 3.5rem 6%;
  position: relative;
  z-index: 1;
}

section + section {
  margin-top: 2.5rem;
}

/* Specific section tweaks */
#featured,
#projects,
#services {
  margin-bottom: 3.5rem;
}

/* Mobile adjustments */
@media (max-width: 900px) {
  section {
    padding: 2.5rem 7%;
  }
  section + section {
    margin-top: 2rem;
  }
}

/* Specific spacing for featured/projects/services */
#featured,
#projects,
#services {
  margin-bottom: 6rem;
}

/* Responsive adjustments */
@media (max-width: 900px) {
  section {
    padding: 4rem 6%;
  }
  section + section {
    margin-top: 3rem;
  }
}


/* ============================================================
   📱 RESPONSIVE DESIGN STYLES
   Works for tablets, mobiles, and small laptops
============================================================ */

/* --- Tablet (<= 1024px) --- */
@media (max-width: 1024px) {
  header {
    padding: 15px 40px;
  }

  nav ul {
    gap: 20px;
  }

  .hero h1 {
    font-size: 2.6rem;
  }

  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  section {
    padding: 60px 40px;
  }
}

/* --- Mobile (<= 768px) --- */
@media (max-width: 768px) {
  header {
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }

  .hero {
    padding-top: 100px;
    text-align: center;
  }

  .hero h1 {
    font-size: 2rem;
  }

  nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }

  .projects-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .about-content {
    flex-direction: column;
  }

  form {
    width: 100%;
    padding: 20px;
  }

  input, select, textarea {
    font-size: 0.9rem;
    padding: 10px;
  }

  button, .btn-primary {
    width: 100%;
    text-align: center;
  }
}

/* --- Small Phones (<= 480px) --- */
@media (max-width: 480px) {
  body {
    font-size: 14px;
  }

  header {
    padding: 10px 20px;
  }

  .hero h1 {
    font-size: 1.6rem;
  }

  .hero p {
    font-size: 0.9rem;
  }

  .projects-grid {
    gap: 15px;
  }

  footer {
    font-size: 0.8rem;
  }
}