/* --- Root Variables: Ethereal Charcoal & Soft Sky Blue --- */
:root {
  --bg-main: #181c20;          /* Soft Charcoal Base */
  --bg-surface: #22272e;       /* Card/Header Charcoal */
  --bg-hover: #2d333b;         /* Low-contrast interactive background */
  
  --border-subtle: #373e47;    /* Soft border separator */
  
  --text-main: #e6edf3;        /* Soft White / Light Slate */
  --text-muted: #919ba1;       /* Low-glare Muted Gray */
  
  --sky-blue: #88c0d0;         /* Ethereal Soft Sky Blue */
  --sky-blue-hover: #a3d4e0;   /* Brightened Sky Blue for hover states */
  --sky-blue-subtle: #1f2d3a;  /* Very low-contrast blue tint */

  --font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* --- Base Reset & Global Rules --- */
*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  overflow-x: hidden; /* Prevent horizontal scrolling on small screens */
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-family);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input {
  font-family: inherit;
}

/* --- Hero & Section Layout --- */
.hero {
  text-align: center;
  max-width: 750px;
  margin: 3rem auto 4rem;
  padding: 0 1rem;
}

.hero h1 {
  font-size: 2.5rem;
  margin: 1rem 0;
  letter-spacing: -0.02em;
}

.hero p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

/* --- Buttons --- */
.btn {
  padding: 0.65rem 1.25rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.btn-primary {
  background-color: var(--sky-blue);
  color: #101216;
}

.btn-primary:hover {
  background-color: var(--sky-blue-hover);
}

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

.btn-secondary:hover {
  background-color: var(--bg-hover);
}