/* =============================
   GLOBAL RESET & BASE
   International Standards Compliance (WCAG 2.1 AA)
   Mobile-First Responsive Design
   Cross-Platform Support (Windows, Mac, Linux)
   ============================= */

/* === CSS RESET === */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  /* Smooth scrolling across browsers */
  scroll-behavior: smooth;
  /* Prevent adjustments of font size after orientation changes */
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

:root{
  --topbar-height: 40px;
  --header-height: 72px;
  --container-max: 1200px;
  --accent-1: #4a90e2;
  --accent-2: #764ba2;
  --bg-dark: #0b1a2e;

  /* combined height of topbar + header (used to push body content below fixed header) */
  --site-header-total: calc(var(--topbar-height) + var(--header-height));

  /* Light Theme (Default) */
  --text-primary: #333333;
  --text-secondary: #666666;
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --border-color: #e5e7eb;
  --topbar-bg: #111827;
  --topbar-text: #ffffff;
  --card-bg: #ffffff;
  --card-shadow: rgba(0, 0, 0, 0.1);
}

/* Dark Theme */
html.dark-theme {
  --text-primary: #e5e7eb;
  --text-secondary: #b3b3b3;
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --border-color: #374151;
  --topbar-bg: #0f1419;
  --topbar-text: #e5e7eb;
  --card-bg: #264653;
  --card-shadow: rgba(0, 0, 0, 0.5);
}

html,
body {
  height: 100%;
  width: 100%;
}

body {
  /* Use system fonts stack for better cross-platform rendering */
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'Roboto', sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  min-height: 100vh;
  margin: 0;
  position: relative;
  background: var(--bg-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
  /* Improve font rendering on Windows & Mac */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* Support for safe area (notches on mobile devices) */
  padding: max(0px, env(safe-area-inset-bottom));
}

/* Improve text rendering for headers */
h1, h2, h3, h4, h5, h6 {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

/* Accessibility: Focus outline visible */
*:focus-visible {
  outline: 3px solid var(--accent-1);
  outline-offset: 2px;
}

/* Remove default focus outline on click (accessibility) */
*:focus:not(:focus-visible) {
  outline: none;
}

/* persistent gradient background layer */
.page-bg {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  z-index: -1;
}

/* standard container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

/* =============================
   SITE-HEADER WRAPPER (TOP BAR + HEADER)
   ============================= */
   .site-header-wrapper {
  position: relative;
  height: var(--site-header-total);
  width: 100%;
}

/* .site-header-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--site-header-total); 
  z-index: 1000;
  box-shadow: 0 2px 6px rgba(0,0,0,0.06);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
} */

/* -------- Top Bar -------- */
/* ===============================
   TOP BAR (Email left + Social icons right)
   =============================== */
.top-bar {
  background: var(--topbar-bg);
  color: var(--topbar-text);
  font-size: 0.95rem;
  border-bottom: 1px solid var(--border-color); 
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--topbar-height);
  z-index: 1001;
  transition: background-color 0.3s ease, color 0.3s ease, transform 0.3s ease;
  transform: translateY(0);
}

/* Hide top bar on scroll down */
.top-bar.hide-header {
  transform: translateY(-100%);
}

.top-bar .container {
  display: flex;
  justify-content: space-between; /* left-right layout */
  align-items: center;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 8px;   /* 👈 moves email closer to left edge */
  padding-right: 20px; /* keeps right side as is */
}

/* ---------- LEFT (Email) ---------- */
.top-bar .top-left a,
.top-bar .top-left a:visited {
  color: var(--topbar-text);
  text-decoration: none;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color 0.3s ease;
}

.top-bar .top-left a i {
  font-size: 0.9rem;
}

.top-bar .top-left a:hover {
  color: var(--accent-1, #4a90e2);
}

/* ---------- RIGHT (Social Icons) ---------- */
.top-bar .top-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.top-bar .top-right a,
.top-bar .top-right a:visited {
  color: var(--topbar-text);
  text-decoration: none;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: color 0.3s ease, transform 0.2s ease, opacity 0.2s ease;
  opacity: 1;
}

.top-bar .top-right a:hover {
  color: var(--accent-1, #4a90e2);
  transform: translateY(-2px);
  opacity: 1;
}

/* ---------- Mobile Responsive ---------- */
@media (max-width: 768px) {
  .top-bar .container {
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    height: auto;
    padding: 6px 12px;
  }

  .top-bar .top-left {
    order: 1;
  }

  .top-bar .top-right {
    order: 2;
    justify-content: center;
  }
}


/* -------- Main header row -------- */

/* ================================
   HEADER FIX — Logo + Brand + Nav
   ================================ */
/* ================================
   HEADER — Logo + Brand beside each other + Nav right
   ================================ */
/* .site-header {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(6px);
  padding: 10px 0;
  box-shadow: 0 1px 0 rgba(0,0,0,0.03) inset;
  width: 100%;
  position: relative;
  z-index: 999;
} */

.site-header {
  position: fixed;
  top: var(--topbar-height); /* 🔑 sits BELOW top bar */
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background: var(--card-bg);
  backdrop-filter: blur(6px);
  transform: translateY(0);
  transition: transform 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* Hide header on scroll down */
.site-header.hide-header {
  transform: translateY(-100%);
  box-shadow: none;
}

/* Add shadow when scrolled */
.site-header.scrolled {
  background: var(--card-bg);
  box-shadow: 0 4px 12px var(--card-shadow);
}

html.dark-theme .site-header {
  background: rgba(26, 26, 46, 0.95);
}

html.dark-theme .site-header.scrolled {
  background: rgba(26, 26, 46, 0.98);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max, 1200px);
  margin: 0 auto;
  padding: 8px 20px 0 20px;
}

/* === LEFT: Logo + Brand === */
.logo-col {
  display: flex;
  align-items: center;
  gap: 8px; /* adjust spacing between logo and text */
}

.logo-img {
  max-height: 56px;
  width: auto;
  object-fit: contain;
  display: block;
}

.brand-col {
  display: flex;
  align-items: center;
}

.brand-name h1 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0;
  line-height: 1;
  background: linear-gradient(45deg, var(--accent-1, #4a90e2), var(--accent-2, #764ba2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  white-space: nowrap; /* prevents wrapping */
  margin-left: 6px; /* moves text closer to logo */
}

/* === RIGHT: Navigation === */
.nav-col {
  margin-left: auto; /* pushes nav to right */
}

.nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.nav-menu {
  display: flex;
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
  align-items: center;
  flex-wrap: nowrap;
}

.nav-item a {
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 20px;
  white-space: nowrap;
  transition: color 0.3s ease;
  transition: background 0.2s ease, color 0.2s ease, transform 0.12s ease;
  display: inline-block;
}

.nav-item a:hover {
  color: var(--accent-1, #4a90e2);
  background: rgba(74,144,226,0.06);
  transform: translateY(-2px);
}

.nav-item a.active {
  color: var(--accent-1, #4a90e2);
  background: rgba(74,144,226,0.09);
}

/* === Hamburger for Mobile === */
.hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: transparent;
  border: none;
  padding: 6px;
}
.hamburger span {
  display: block;
  width: 26px;
  height: 3px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease, margin 0.3s ease;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translateY(10px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translateY(-10px); }

/* === Responsive === */
@media (max-width: 768px) {
  .nav { display: none; }
  .nav.active {
    display: block;
    position: absolute;
    top: calc(100% + 6px);
    right: 12px;
    left: 12px;
    background: var(--card-bg);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    border-radius: 8px;
    padding: 12px;
  }
  .nav-menu { flex-direction: column; gap: 10px; }
  .hamburger { display: flex; }
}



/* =============================
   MAIN CONTENT
   ============================= */
.main-content {
  padding-top: var(--site-header-total);
  min-height: 100vh;
  background: var(--bg-primary);
  backdrop-filter: blur(6px);
  transition: background-color 0.3s ease;
}  

/* =============================
   HERO
   ============================= */
.about-hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  text-align: center;
  padding: 6rem 0;
  position: relative;
  overflow: hidden;
}
.about-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="rgba(255,255,255,0.08)"/><circle cx="80" cy="40" r="3" fill="rgba(255,255,255,0.08)"/><circle cx="40" cy="80" r="1" fill="rgba(255,255,255,0.08)"/></svg>');
  animation: float 20s infinite linear;
}
@keyframes float {
  0% { transform: translateY(0) rotate(0deg); }
  100% { transform: translateY(-100px) rotate(360deg); }
}
.about-hero h1 {
  font-family: 'Orbitron', monospace;
  font-size: 3.2rem;
  font-weight: 900;
  margin-bottom: 1rem;
}
.about-hero p {
  font-size: 1.2rem;
  opacity: 0.92;
  margin-bottom: 1.8rem;
}

/* =============================
   SECTIONS
   ============================= */
.about-section { padding: 4rem 0; }

.section-title {
  font-family: 'Orbitron', monospace;
  font-size: 2.25rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 2.25rem;
  background: linear-gradient(45deg, var(--accent-1), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

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

.about-card {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 10px 30px var(--card-shadow);
  border: 1px solid var(--border-color);
  transition: transform 0.25s ease, box-shadow 0.25s ease, background-color 0.3s ease;
  backdrop-filter: blur(6px);
}
.about-card:hover { transform: translateY(-8px); box-shadow: 0 18px 36px rgba(0,0,0,0.12); }
.about-card i { font-size: 2.6rem; color: var(--accent-1); margin-bottom: 1rem; display:block; }
.about-card h3 { font-family: 'Orbitron', monospace; font-size: 1.25rem; margin-bottom: 0.75rem; color: var(--text-primary); }
.about-card p { color: var(--text-secondary); line-height:1.7; }

/* Stats */
.stats-section { background: linear-gradient(135deg,#4a90e2,#764ba2); color:#fff; padding: 3.25rem 0 8rem 0; margin-bottom: 6rem; }
.stats-grid { display:grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit,minmax(200px,1fr)); text-align:center; }
.stat-item h3 { font-family:'Orbitron', monospace; font-size:2.4rem; font-weight:900; margin-bottom:0.25rem; }
.stat-item p { opacity:0.9; }

/* Team */
.team-grid { display:grid; gap:1.25rem; grid-template-columns: repeat(auto-fit,minmax(250px,1fr)); }
.team-member { background: var(--card-bg); padding:1.75rem; border-radius:12px; text-align:center; box-shadow: 0 10px 30px var(--card-shadow); transition: transform .2s ease, background-color 0.3s ease; }
.team-member:hover { transform: translateY(-6px); }
.team-member img { width:120px;height:120px;border-radius:50%;object-fit:cover;border:4px solid var(--accent-1); margin-bottom:1rem; }
.team-member h4 { font-family:'Orbitron', monospace; font-size:1.15rem; margin-bottom:6px; color: var(--text-primary); }
.team-member .role { color:var(--accent-1); font-weight:600; margin-bottom:10px; }

/* Offices */
.offices-grid { display:grid; gap:1.25rem; grid-template-columns: repeat(auto-fit,minmax(300px,1fr)); }
.office-card { background: var(--card-bg); padding:1.5rem; border-radius:12px; box-shadow:0 10px 30px var(--card-shadow); transition: background-color 0.3s ease; }
.office-card h4 { font-family:'Orbitron', monospace; color:var(--accent-1); margin-bottom:8px; }
.office-card p { color: var(--text-secondary); }

/* =============================
   CLIENT SCROLLER
   ============================= */
.scroll-wrapper { position: relative; overflow: visible; margin-top: 2rem; padding: 0 2rem; }
.scroll-container {
  display: flex; gap: 1.25rem; overflow-x: auto; scroll-behavior: smooth;
  padding: 1rem 0; -ms-overflow-style: none; scrollbar-width: none; touch-action: pan-x;
}
.scroll-container::-webkit-scrollbar { display:none; }

.client-card {
  background:var(--bg-secondary); border-radius:12px; padding:1.25rem; min-width:260px;
  box-shadow:0 6px 18px rgba(0,0,0,0.06); transition: transform .25s ease, box-shadow .25s ease; flex-shrink:0;
}
.client-card:hover { transform: translateY(-6px); box-shadow:0 14px 30px rgba(0,0,0,0.12); }
/* All client cards use theme variables for consistency */
.client-card:nth-child(n) { background:var(--bg-secondary); }

/* Scroll buttons */
.scroll-btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  background:var(--card-bg); border:none; width:44px; height:44px; font-size:1.25rem;
  cursor:pointer; z-index:20; border-radius:50%;
  box-shadow:0 4px 10px rgba(0,0,0,0.08); display:flex;align-items:center;justify-content:center;
}
.scroll-btn.left { left: 8px; }
.scroll-btn.right { right: 8px; }

/* =============================
   FOOTER
   ============================= */
.footer {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 1rem 0; text-align: center; color: #fff; font-size: 0.95rem;
}
.footer .container { display:flex; justify-content:center; align-items:center; }
.footer p { margin:0; }

footer.footer {
  position: relative;
  z-index: 1;
}


/* =============================
   BUTTONS
   ============================= */
.btn-primary {
  display:inline-block; background:linear-gradient(45deg,var(--accent-1),var(--accent-2));
  color:#fff; padding:10px 18px; border-radius:999px; text-decoration:none; font-weight:700;
  transition: transform .15s ease, box-shadow .15s ease;
}
.btn-primary:hover { transform: translateY(-3px); box-shadow:0 12px 30px rgba(0,0,0,0.12); }

.btn-secondary {
  display:inline-block; background:transparent; color:var(--text-primary);
  padding:10px 18px; border-radius:999px; border:1px solid rgba(0,0,0,0.06); text-decoration:none;
}

.center { text-align:center; }

/* =============================
   RESPONSIVE
   ============================= */
@media (max-width: 1024px) {
  .header-content { grid-template-columns: auto 1fr 1fr; gap:12px; }
  .brand-name h1 { font-size: 1.2rem; }
}

@media (max-width: 768px) {
  :root {
    --topbar-height: 50px;
    --header-height: 72px;
    --site-header-total: calc(var(--topbar-height) + var(--header-height));
  }

  .header-content { grid-template-columns: auto 1fr auto; gap:10px; }

  .top-bar .container {
    flex-direction: row;
    justify-content: space-between;
    padding: 8px 12px;
  }

  .top-bar .top-left,
  .top-bar .top-right {
    order: unset;
    justify-content: unset;
  }

  .top-bar .top-left a {
    font-size: 0.85rem;
  }

  .top-bar .top-right {
    gap: 12px;
  }

  .nav { display: none; }
  .nav.active {
    display: block;
    position: absolute;
    top: calc(var(--topbar-height) + var(--header-height));
    right: 0; left: 0;
    background: var(--card-bg);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    max-height: 400px;
    overflow:auto;
  }
  .nav-menu { flex-direction: column; padding: 12px; gap: 12px; }

  .hamburger { display: flex; }
  .logo-img { max-height: 52px; }
  .brand-name h1 { font-size: 1.05rem; }

  .about-hero { padding: 4.5rem 0; }
  .about-hero h1 { font-size: 2.2rem; }
  .section-title { font-size: 1.6rem; }
}

/* Accessibility focus outline */
a:focus, button:focus { outline: 3px dashed rgba(74,144,226,0.25); outline-offset: 3px; }

.logo-container {
  width: 72px;
  height: 72px;
  margin: 0 auto 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.client-logo {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}
/* =============================
   CLIENT CARD TEXT
   ============================= */

.client-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  text-align: center;
}

.client-description {
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--text-secondary);
  text-align: center;
  margin-top: 6px;
}

.client-description strong {
  color: var(--text-primary);
  font-weight: 600;
}
.domain-tag {
  display: block;              /* 🔑 makes centering reliable */
  width: fit-content;
  margin: 8px auto;            /* 🔑 horizontal centering */
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 999px;
  text-align: center;
  line-height: 1.2;
}

/* Education */
.domain-tag.education {
  background: #eef2ff;
  color: #4338ca;
  text-align: center;
}

/* Health */
.domain-tag.health {
  background: #ecfdf5;
  color: #047857;
}

/* Technology */
.domain-tag.tech {
  background: #eff6ff;
  color: #1d4ed8;
}

/* Finance */
.domain-tag.finance {
  background: #fff7ed;
  color: #9a3412;
}

/* Market / Retail */
.domain-tag.market {
  background: #fef2f2;
  color: #b91c1c;
}

/* Chat launcher */
#chatbot-launcher {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(45deg, #4a90e2, #764ba2);
  color: #fff;
  font-size: 24px;
  cursor: pointer;
  z-index: 9999;
}

/* Chat window */
#chatbot-window {
  position: fixed;
  bottom: 90px;
  right: 24px;
  width: 340px;
  max-height: 520px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 12px 30px rgba(0,0,0,0.25);
  display: none;          /* 🔑 hidden initially */
  flex-direction: column;
  z-index: 9999;
}

/* Header */
.chat-header {
  padding: 12px;
  background: #4a90e2;
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Body */
.chat-body {
  padding: 12px;
  overflow-y: auto;
  flex: 1;
}

/* Footer */
.chat-footer {
  display: flex;
  gap: 8px;
  padding: 10px;
  border-top: 1px solid #eee;
}

.chat-footer input {
  flex: 1;
  padding: 8px;
}

/* Messages */
.bot-msg {
  background: #f3f4f6;
  padding: 8px 10px;
  border-radius: 8px;
  margin-bottom: 6px;
}

.user-msg {
  background: #4a90e2;
  color: #fff;
  padding: 8px 10px;
  border-radius: 8px;
  margin-bottom: 6px;
  text-align: right;
}
.chat-logo {
  width: 75px;
  height: 75px;
  object-fit: contain;
  display: block;
  margin: 0 auto 22px;
}

/* =============================
   PREMIUM CONTACT FORM (WCAG AAA)
   International Standards & Enterprise Features
   ============================= */

.form-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 2rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.contact-form {
  max-width: 900px;
  margin: 2rem auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
  text-align: center;
  width: 100%;
  padding: 0 1rem;
}

.contact-form > .form-row,
.contact-form > .form-group {
  width: 100%;
  max-width: 800px;
  text-align: left;
}

/* Form Row Layout (2 columns on desktop) */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .form-row {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

/* Form Group */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.form-group .required {
  color: #e74c3c;
  font-weight: 700;
}

.form-group .optional {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 400;
}

/* Input Fields */
.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.875rem 1rem;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-1);
  box-shadow: 0 0 0 4px rgba(74, 144, 226, 0.1);
  background-color: var(--bg-primary);
}

.form-group input:valid,
.form-group select:valid {
  border-color: #27ae60;
}

.form-group input:invalid:not(:placeholder-shown),
.form-group select:invalid:not(:placeholder-shown) {
  border-color: #e74c3c;
}

/* Placeholder Styling */
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-secondary);
  opacity: 0.7;
}

/* Textarea */
.form-group textarea {
  resize: vertical;
  min-height: 150px;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.5;
}

/* Form Hints & Help Text */
.form-hint {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-top: -0.25rem;
}

.form-hint.gdpr-notice {
  background-color: rgba(39, 174, 96, 0.08);
  padding: 0.75rem 1rem;
  border-radius: 6px;
  border-left: 4px solid #27ae60;
  margin-top: 0.5rem;
}

/* Character Counter */
.char-counter {
  float: right;
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.8rem;
}

.char-counter.warning {
  color: #f39c12;
}

.char-counter.critical {
  color: #e74c3c;
}

/* Checkbox Group (Privacy) */
.checkbox-group {
  gap: 0.75rem;
}

.checkbox-group label {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  cursor: pointer;
  font-weight: 400;
}

.checkbox-group input[type="checkbox"] {
  width: 20px;
  height: 20px;
  min-width: 20px;
  margin-top: 0.25rem;
  cursor: pointer;
  accent-color: var(--accent-1);
  border-radius: 4px;
}

.checkbox-group input[type="checkbox"]:focus {
  outline: 2px solid var(--accent-1);
  outline-offset: 2px;
}

.checkbox-group a {
  color: var(--accent-1);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.checkbox-group a:hover,
.checkbox-group a:focus {
  border-bottom-color: var(--accent-1);
  text-decoration: underline;
}

/* Error Messages (WCAG AAA Compliant) */
.error-message {
  font-size: 0.85rem;
  color: #e74c3c;
  font-weight: 500;
  line-height: 1.4;
  display: block;
  margin-top: -0.25rem;
  min-height: 1.2rem;
}

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
  border-color: #e74c3c;
  background-color: rgba(231, 76, 60, 0.03);
}

/* Submit Button */
.btn-submit {
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  color: white;
  background: linear-gradient(135deg, var(--accent-1) 0%, var(--accent-2) 100%);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
  align-self: flex-start;
  min-width: 200px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(74, 144, 226, 0.4);
}

.btn-submit:active {
  transform: translateY(0);
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-submit .btn-loader {
  display: inline-block;
  margin-right: 0.5rem;
}

/* Form Success/Error Message (Alert) */
.form-message {
  padding: 1rem;
  border-radius: 8px;
  font-weight: 500;
  font-size: 0.95rem;
  line-height: 1.5;
  display: none;
  animation: slideDown 0.3s ease-out;
}

.form-message.success {
  background-color: rgba(39, 174, 96, 0.1);
  color: #27ae60;
  border-left: 4px solid #27ae60;
  display: block;
}

.form-message.error {
  background-color: rgba(231, 76, 60, 0.1);
  color: #e74c3c;
  border-left: 4px solid #e74c3c;
  display: block;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Dark Theme Support for Forms */
html.dark-theme .form-group input,
html.dark-theme .form-group select,
html.dark-theme .form-group textarea {
  background-color: #2d2d3d;
  color: #e5e7eb;
  border-color: #3f3f52;
}

html.dark-theme .form-group input::placeholder,
html.dark-theme .form-group textarea::placeholder {
  color: #9ca3af;
}

html.dark-theme .form-group input:focus,
html.dark-theme .form-group select:focus,
html.dark-theme .form-group textarea:focus {
  border-color: var(--accent-1);
  box-shadow: 0 0 0 4px rgba(74, 144, 226, 0.2);
}

html.dark-theme .error-message {
  color: #ff6b6b;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .contact-form {
    margin: 1.5rem auto;
    gap: 1rem;
  }

  .form-group label {
    font-size: 0.9rem;
  }

  .form-group input,
  .form-group select,
  .form-group textarea {
    padding: 0.75rem 0.875rem;
    font-size: 16px; /* Prevents zoom on mobile focus */
  }

  .form-group textarea {
    min-height: 120px;
  }

  .btn-submit {
    width: 100%;
    padding: 1rem;
    min-width: unset;
  }

  .checkbox-group label {
    font-size: 0.9rem;
  }

  .form-hint {
    font-size: 0.8rem;
  }
}

/* Tablet/Medium Screens */
@media (max-width: 1024px) and (min-width: 769px) {
  .form-row {
    gap: 1.25rem;
  }
}

/* =============================
   THEME TOGGLE BUTTON
   ============================= */
#theme-toggle {
  position: fixed;
  top: calc(var(--topbar-height) + 14px);
  right: 20px;
  z-index: 999;
  background: var(--accent-1);
  border: none;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  color: white;
  transition: background-color 0.3s ease, transform 0.2s ease, top 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

#theme-toggle:hover {
  transform: scale(1.1);
  background: var(--accent-2);
}

#theme-toggle:active {
  transform: scale(0.95);
}

#theme-toggle.hide-header {
  transform: translateY(-100%);
}

@media (max-width: 768px) {
  #theme-toggle {
    top: calc(var(--topbar-height) + 10px);
    right: 10px;
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }
}


/* End of stylesheet */