/* ==========================================================================
   CYRION ELECTRONICS - MODERN DESIGN SYSTEM & STYLESHEET
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* --- COLOR PALETTE & DESIGN TOKENS --- */
:root {
  /* Color Palette - Dark Theme Default */
  --bg-primary: #070b14;
  --bg-secondary: #0e1626;
  --bg-tertiary: #152238;
  --bg-card: rgba(14, 22, 38, 0.75);
  --bg-card-hover: rgba(21, 34, 56, 0.9);
  --glass-border: rgba(0, 242, 254, 0.15);
  --glass-border-hover: rgba(0, 242, 254, 0.4);

  --text-main: #f0f4f8;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --accent-cyan: #00f2fe;
  --accent-blue: #0072ff;
  --accent-glow: rgba(0, 242, 254, 0.3);
  --accent-gradient: linear-gradient(135deg, #00f2fe 0%, #0072ff 100%);
  --amber-accent: #ffab00;
  --green-status: #10b981;

  --border-radius-sm: 8px;
  --border-radius-md: 14px;
  --border-radius-lg: 20px;

  --shadow-subtle: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px rgba(0, 242, 254, 0.25);
  --shadow-cyan: 0 4px 20px rgba(0, 242, 254, 0.35);

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Light Mode Overrides */
[data-theme="light"] {
  --bg-primary: #f4f7fb;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e2e8f0;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --glass-border: rgba(0, 114, 255, 0.15);
  --glass-border-hover: rgba(0, 114, 255, 0.4);

  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #64748b;

  --accent-cyan: #0072ff;
  --accent-blue: #0284c7;
  --accent-glow: rgba(0, 114, 255, 0.2);
  --shadow-subtle: 0 10px 30px -10px rgba(0, 0, 0, 0.08);
  --shadow-glow: 0 0 25px rgba(0, 114, 255, 0.15);
}

/* --- RESET & BASE STYLES --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-main);
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--text-main);
}

button {
  cursor: pointer;
  font-family: var(--font-body);
  border: none;
  outline: none;
  background: none;
}

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

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-padding {
  padding: 6rem 0;
}

.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* --- BUTTONS & BADGES --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.8rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: var(--shadow-cyan);
  border: 1px solid transparent;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 242, 254, 0.45);
}

.btn-secondary {
  background: rgba(0, 242, 254, 0.08);
  color: var(--text-main);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(0, 242, 254, 0.18);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

.btn-icon {
  padding: 0.6rem;
  border-radius: 50%;
  background: var(--bg-tertiary);
  color: var(--text-main);
  border: 1px solid var(--glass-border);
}

.btn-icon:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.9rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 20px;
  background: rgba(0, 242, 254, 0.1);
  color: var(--accent-cyan);
  border: 1px solid var(--glass-border);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.badge-pulse::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--green-status);
  box-shadow: 0 0 10px var(--green-status);
  animation: pulse-green 1.8s infinite;
}

@keyframes pulse-green {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1.1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* --- HEADER & NAVIGATION --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: all var(--transition-normal);
  background: rgba(7, 11, 20, 0.65);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.navbar.scrolled {
  background: rgba(7, 11, 20, 0.92);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: var(--accent-gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1.2rem;
  box-shadow: var(--shadow-cyan);
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-main);
}

.logo-text span {
  color: var(--accent-cyan);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--accent-cyan);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent-gradient);
  transition: width var(--transition-fast);
  border-radius: 2px;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.phone-quick-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-main);
  padding: 0.4rem 0.8rem;
  border-radius: var(--border-radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
}

.phone-quick-link:hover {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

.mobile-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--text-main);
}

/* --- HERO SECTION --- */
.hero-section {
  position: relative;
  padding-top: 130px;
  padding-bottom: 90px;
  overflow: hidden;
  min-height: 90vh;
  display: flex;
  align-items: center;
}

.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  opacity: 0.45;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-title {
  font-size: clamp(2.4rem, 4vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  margin: 1.2rem 0 1.5rem 0;
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 90%;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.hero-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  width: 100%;
  padding-top: 2rem;
  border-top: 1px solid var(--glass-border);
}

.stat-card {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent-cyan);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.hero-visual-card {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-subtle), var(--shadow-glow);
  background: var(--bg-card);
  backdrop-filter: blur(12px);
}

.hero-visual-card img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.hero-visual-card:hover img {
  transform: scale(1.03);
}

.hero-visual-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 1.5rem;
  background: linear-gradient(to top, rgba(7, 11, 20, 0.95), transparent);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.hero-chip-status {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(15, 23, 42, 0.85);
  padding: 0.6rem 1.2rem;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--glass-border);
}

/* --- SECTION HEADERS --- */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 4rem auto;
}

.section-header .section-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-top: 1rem;
}

.section-header h2 {
  font-size: clamp(2rem, 3vw, 2.75rem);
  margin-top: 0.8rem;
}

/* --- LAB / OSCILLOSCOPE INTERACTIVE TOOL SECTION --- */
.lab-section {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  position: relative;
}

.oscilloscope-card {
  background: var(--bg-secondary);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-subtle), var(--shadow-glow);
  padding: 2rem;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 2rem;
  align-items: center;
}

.oscilloscope-screen-container {
  background: #040810;
  border-radius: var(--border-radius-md);
  border: 2px solid #1e293b;
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 0 30px rgba(0, 0, 0, 0.8);
}

.oscilloscope-screen-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.2rem;
  background: rgba(15, 23, 42, 0.9);
  border-bottom: 1px solid #1e293b;
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--accent-cyan);
}

.oscilloscope-readouts {
  display: flex;
  gap: 1.5rem;
}

.oscilloscope-readout-item span {
  color: var(--text-muted);
  font-size: 0.75rem;
}

canvas#oscilloscopeCanvas {
  width: 100%;
  height: 360px;
  display: block;
}

.oscilloscope-controls {
  background: var(--bg-tertiary);
  padding: 1.5rem;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.control-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
}

.control-group label span.val-display {
  color: var(--accent-cyan);
  font-family: monospace;
}

.waveform-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.wave-btn {
  padding: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--border-radius-sm);
  background: var(--bg-secondary);
  color: var(--text-muted);
  border: 1px solid var(--glass-border);
  transition: all var(--transition-fast);
}

.wave-btn.active, .wave-btn:hover {
  background: var(--accent-gradient);
  color: #fff;
  border-color: transparent;
}

input[type="range"] {
  accent-color: var(--accent-cyan);
  height: 6px;
  background: var(--bg-secondary);
  border-radius: 3px;
  cursor: pointer;
}

/* --- SERVICES SHOWCASE SECTION --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  padding: 2.2rem;
  backdrop-filter: blur(10px);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--glass-border-hover);
  box-shadow: var(--shadow-subtle), var(--shadow-glow);
  background: var(--bg-card-hover);
}

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

.service-icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--border-radius-md);
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--accent-cyan);
  margin-bottom: 1.5rem;
}

.service-title {
  font-size: 1.4rem;
  margin-bottom: 0.8rem;
}

.service-description {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.service-features-list {
  list-style: none;
  margin-bottom: 1.8rem;
}

.service-features-list li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.88rem;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.service-features-list li svg {
  color: var(--accent-cyan);
  flex-shrink: 0;
}

/* --- QUOTE ESTIMATOR CALCULATOR --- */
.calculator-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
}

.calculator-container {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 3rem;
  background: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--glass-border);
  padding: 3rem;
  box-shadow: var(--shadow-subtle);
}

.calc-inputs-grid {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.calc-input-block {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.calc-input-label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  display: flex;
  justify-content: space-between;
}

.calc-options-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.8rem;
}

.calc-opt-btn {
  padding: 0.8rem 1rem;
  border-radius: var(--border-radius-sm);
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  text-align: center;
  transition: all var(--transition-fast);
}

.calc-opt-btn.active, .calc-opt-btn:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  background: rgba(0, 242, 254, 0.08);
}

.calc-summary-card {
  background: var(--bg-tertiary);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--glass-border);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.calc-summary-title {
  font-size: 1.2rem;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
}

.calc-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.calc-row .val {
  font-weight: 600;
  color: var(--text-main);
}

.calc-total-box {
  background: var(--bg-primary);
  padding: 1.2rem;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--glass-border);
  text-align: center;
  margin: 1.5rem 0;
}

.calc-total-price {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent-cyan);
}

/* --- ABOUT & LEADERSHIP SECTION --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-content h3 {
  font-size: 2rem;
  margin-bottom: 1.2rem;
}

.about-text {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
}

.leader-badge {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  padding: 1.2rem;
  border-radius: var(--border-radius-md);
  margin-top: 2rem;
}

.leader-avatar {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.2rem;
  color: #fff;
}

.leader-info h5 {
  font-size: 1.1rem;
}

.leader-info p {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.facility-card-visual {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-subtle);
  position: relative;
}

.facility-card-visual img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.facility-tag {
  position: absolute;
  bottom: 1.5rem;
  left: 1.5rem;
  background: rgba(7, 11, 20, 0.85);
  backdrop-filter: blur(8px);
  padding: 0.8rem 1.4rem;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--glass-border);
}

/* --- CONTACT SECTION & CARDS --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3.5rem;
}

.contact-info-cards {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-card {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  padding: 1.8rem;
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  transition: border-color var(--transition-fast);
}

.contact-card:hover {
  border-color: var(--accent-cyan);
}

.contact-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(0, 242, 254, 0.1);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-card-details h4 {
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
}

.contact-card-details p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 0.8rem;
}

.action-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  cursor: pointer;
}

.action-link-btn:hover {
  text-decoration: underline;
}

.contact-form-container {
  background: var(--bg-secondary);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--glass-border);
  padding: 2.5rem;
  box-shadow: var(--shadow-subtle);
}

.form-group-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.2rem;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form-control {
  width: 100%;
  padding: 0.85rem 1.1rem;
  background: var(--bg-primary);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-sm);
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

/* --- MAP EMBED CARD --- */
.map-embed-container {
  width: 100%;
  height: 280px;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  margin-top: 1.5rem;
  position: relative;
  background: #0d1527;
}

.map-embed-container iframe {
  width: 100%;
  height: 100%;
  border: none;
  filter: invert(90%) hue-rotate(180deg) contrast(1.1);
}

/* --- FOOTER --- */
footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--glass-border);
  padding-top: 4rem;
  padding-bottom: 2rem;
  color: var(--text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  margin-top: 1rem;
  font-size: 0.9rem;
  max-width: 320px;
}

.footer-title {
  color: var(--text-main);
  font-size: 1.1rem;
  margin-bottom: 1.2rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--accent-cyan);
}

.footer-newsletter p {
  font-size: 0.88rem;
  margin-bottom: 1rem;
}

.newsletter-form {
  display: flex;
  gap: 0.5rem;
}

.newsletter-form input {
  flex: 1;
  padding: 0.7rem 0.9rem;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-sm);
  color: var(--text-main);
  outline: none;
  font-size: 0.88rem;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

/* --- MODAL DIALOGS --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(4, 7, 13, 0.8);
  backdrop-filter: blur(10px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background: var(--bg-secondary);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-subtle), var(--shadow-glow);
  width: 100%;
  max-width: 650px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2.5rem;
  position: relative;
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal-card {
  transform: scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-size: 1.4rem;
  color: var(--text-dim);
  transition: color var(--transition-fast);
}

.modal-close-btn:hover {
  color: var(--accent-cyan);
}

/* --- TOAST NOTIFICATIONS --- */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.toast {
  background: var(--bg-secondary);
  border: 1px solid var(--accent-cyan);
  border-radius: var(--border-radius-sm);
  padding: 1rem 1.4rem;
  color: var(--text-main);
  box-shadow: var(--shadow-cyan);
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.9rem;
  animation: slide-in 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slide-in {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* --- RESPONSIVE MEDIA QUERIES --- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .oscilloscope-card {
    grid-template-columns: 1fr;
  }
  .calculator-container {
    grid-template-columns: 1fr;
  }
  .about-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links, .phone-quick-link {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--glass-border);
    padding: 1.5rem;
    gap: 1.2rem;
  }
  .hero-stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
  .form-group-row {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}