/* Base colors */
:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f5f5f5; /* light grey */
  --color-text: #111111; /* near black */
  --color-muted: #777777;
  --color-border: #e6e6e6;
  --color-accent: #e53935; /* red accent */
}

* {
  box-sizing: border-box;
}

html,
body {
  padding: 0;
  margin: 0;
  color: var(--color-text);
  background: var(--color-bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;
  line-height: 1.6;
}

/* Layout */
.container {
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
}

.brand .logo {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background-image: url('appIcon.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.brand .title {
  font-weight: 700;
  letter-spacing: 0.2px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 0;
}

nav a {
  color: var(--color-text);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 6px;
}

nav a:hover,
nav a[aria-current="page"] {
  color: var(--color-bg);
  background: var(--color-text);
}

.hero {
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
}

.hero .content {
  padding: 56px 0;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
}

.hero h1 {
  margin: 0 0 10px;
  font-size: 40px;
  line-height: 1.1;
}

.hero p.lead {
  color: var(--color-muted);
  font-size: 18px;
  margin: 0 0 16px;
}

.hero-highlight {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-accent);
  margin: 0 0 22px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--color-accent);
  color: var(--color-bg);
  text-decoration: none;
  padding: 12px 16px;
  border-radius: 8px;
  font-weight: 600;
}

.cta.secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.features-grid-old {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding: 36px 0 24px;
}

.card {
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 18px;
  background: var(--color-bg);
}

.card h3 {
  margin: 0 0 6px;
}

.muted {
  color: var(--color-muted);
}

main .section {
  padding: 40px 0;
}

footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
  padding: 22px 0;
  color: var(--color-muted);
}

/* Footer links */
footer .footer-links {
  margin-top: 6px;
}

footer .footer-links a {
  color: inherit;
  text-decoration: none;
}

footer .footer-links a:hover {
  text-decoration: underline;
}

/* Problem indicator styling */
.problem-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  padding: 8px 12px;
  background: var(--color-bg-alt);
  border-radius: 6px;
  border-left: 3px solid var(--color-muted);
}

.battery-icon {
  font-size: 18px;
}

/* Hero image styling */
.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Problem section styling */
.problem-section {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 40px 0;
}

.problem-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.problem-text h2 {
  margin: 0 0 16px;
  font-size: 32px;
  line-height: 1.2;
}

.problem-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Solution section styling */
.solution-section {
  padding: 40px 0;
}

.solution-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.solution-text h2 {
  margin: 0 0 16px;
  font-size: 32px;
  line-height: 1.2;
}

.solution-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.solution-highlight {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-accent);
  margin: 16px 0 0;
}

/* Feature card images */
.features .card img {
  border: 1px solid var(--color-border);
}

/* Contact */
.contact-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 32px;
}

.contact-card {
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
  background: var(--color-bg);
}

.contact-card h2 {
  margin: 0 0 16px;
  color: var(--color-text);
}

.contact-card h3 {
  margin: 0 0 16px;
  color: var(--color-text);
}

.email-contact {
  margin: 20px 0;
  text-align: center;
}

.email-link {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-bg);
  text-decoration: none;
  padding: 16px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 18px;
  transition: background-color 0.2s ease;
}

.email-link:hover {
  background: #c62828;
}

.contact-note {
  color: var(--color-muted);
  font-style: italic;
  margin-top: 12px;
}

.contact-card ul {
  margin: 0;
  padding-left: 20px;
}

.contact-card li {
  margin-bottom: 8px;
  color: var(--color-text);
}

/* Features section */
.features {
  padding: 60px 0;
  background: var(--color-bg);
}

.features h2 {
  text-align: center;
  margin: 0 0 40px;
  font-size: 32px;
  line-height: 1.2;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}

.feature {
  text-align: center;
  padding: 24px;
}

.feature h3 {
  margin: 0 0 12px;
  font-size: 20px;
  color: var(--color-text);
}

.feature p {
  color: var(--color-muted);
  margin: 0;
  line-height: 1.6;
}

/* Gallery section */
.gallery {
  padding: 60px 0;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.gallery h2 {
  text-align: center;
  margin: 0 0 16px;
  font-size: 32px;
  line-height: 1.2;
}

.gallery p {
  text-align: center;
  color: var(--color-muted);
  margin: 0 0 40px;
  font-size: 18px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.gallery-item {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.gallery-item img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
}

/* Responsive */
@media (max-width: 900px) {
  .hero .content { grid-template-columns: 1fr; }
  .features { grid-template-columns: 1fr; }
  .contact-info { grid-template-columns: 1fr; }
  .problem-content { grid-template-columns: 1fr; gap: 24px; }
  .problem-text h2 { font-size: 28px; }
  .solution-content { grid-template-columns: 1fr; gap: 24px; }
  .solution-text h2 { font-size: 28px; }
  .features h2 { font-size: 28px; }
  .gallery h2 { font-size: 28px; }
  .gallery-grid { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }
}