:root {
  --bg-color: #0f1115;
  --card-bg: #181b21;
  --text-main: #ffffff;
  --text-muted: #9ca3af;
  --accent: #10b981; /* Emerald Green */
  --accent-glow: rgba(16, 185, 129, 0.4);
  --btn-hover: #059669;
  --font-main: "Inter", sans-serif;
  --max-width: 1100px;
  --glass-border: rgba(255, 255, 255, 0.08);
}

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

body {
  background-color: var(--bg-color);
  background-image: url('background.jpg');
  background-size: cover;
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  color: var(--text-main);
  font-family: var(--font-main);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* Header */
.glass-header {
  background: rgba(15, 17, 21, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}

nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

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

/* Hero */
.hero {
  padding-top: 180px;
  padding-bottom: 120px;
  text-align: center;
  position: relative;
}

.hero-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  opacity: 0.2;
  z-index: -1;
  pointer-events: none;
}

.badge {
  background: rgba(16, 185, 129, 0.1);
  color: var(--accent);
  padding: 0.4rem 0.8rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  display: inline-block;
}

h1 {
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  background: linear-gradient(to bottom right, #fff, #ccc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  color: var(--text-muted);
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto 2.5rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.8rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.2s;
}

.btn-primary {
  background-color: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background-color: var(--btn-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px -10px var(--accent-glow);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--text-main);
}

.btn-outline:hover {
  border-color: var(--text-muted);
  background: rgba(255, 255, 255, 0.05);
}

/* Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.card {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  transition: transform 0.2s;
}

.card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.15);
}

.card .icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.card h3 {
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Section Common */
section h2 {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 1rem;
}

.features {
  padding: 80px 0;
}

.feedback {
  padding: 80px 0;
  text-align: center;
  background: linear-gradient(
    to bottom,
    transparent,
    rgba(255, 255, 255, 0.02)
  );
}

.feedback-content p {
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.form-container {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  height: 800px;
  background: var(--card-bg);
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  overflow: hidden;
}

.feedback-form {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.small-text {
  font-size: 0.8rem;
  margin-top: 1rem;
  opacity: 0.6;
}

/* Footer */
footer {
  padding: 3rem 0;
  border-top: 1px solid var(--glass-border);
  margin-top: 4rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-links a {
  color: var(--text-muted);
  margin-left: 1.5rem;
  text-decoration: none;
}

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

/* Responsive */
@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }

  .hero {
    padding-top: 140px;
  }

  .footer-content {
    flex-direction: column;
    gap: 1.5rem;
  }

  .footer-links a {
    margin: 0 0.75rem;
  }
}