:root {
  --bg: #0f0f11;
  --bg-card: #18181b;
  --border: #2a2a2e;
  --text-main: #e5e7eb;
  --text-muted: #9ca3af;
  --accent: #10a37f;
  --radius: 12px;
}

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

/* ===== BASE (MOBILE FIRST) ===== */
body {
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text-main);
  line-height: 1.6;
}

/* ===== LAYOUT ===== */
.container {
  max-width: 100%;
  padding: 1.25rem 1rem;
}

/* ===== CARD ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-left: 10px;
  margin-right: 10px;
}


.footer-left {
  background-color: var(--bg-card);
  width: 50%;
  float: left;
  margin-top: 40%;
  height: 300px;
}

.footer-right {
  background-color: var(--bg-card);
  width: 50%;
  float: right;
  margin-top: 40%;
  height: 300px;
}

.header-left {
  background-color: var(--bg-card);
  width: 80%;
  float: left;
  border-bottom: 1px solid white;
  min-height: 44px;
}

.header-right {
  background-color: var(--bg-card);
  width: 20%;
  float: right;
  border-bottom: 1px solid white;
  min-height: 44px;
}


/* ===== TEXT ===== */
h1 {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

p {
  color: var(--text-muted);
}

/* ===== DIVIDER ===== */
.divider {
  height: 1px;
  background: var(--border);
  margin: 1.25rem 0;
}

/* ===== MESSAGE ===== */
.message {
  padding: 0.9rem 1rem;
  border-radius: 12px;
  background: #1f1f23;
  border: 1px solid var(--border);
  margin-bottom: 0.75rem;
}

/* ===== INPUT ===== */
input,
textarea {
  width: 100%;
  margin-top: 0.75rem;
  padding: 0.75rem 0.9rem;
  font-size: 1rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0f0f11;
  color: var(--text-main);
  outline: none;
  min-height: 44px; /* mobile */
}

input::placeholder,
textarea::placeholder {
  color: #6b7280;
}

input:focus,
textarea:focus {
  border-color: var(--accent);
}

/* ===== BUTTON ===== */
.button {
  width: 100%;
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  font-weight: 500;
  border-radius: 10px;
  background: var(--accent);
  color: #042f24;
  border: none;
  cursor: pointer;
  min-height: 44px;
}

/* ===== DESKTOP ===== */
@media (min-width: 768px) {
  .container {
    max-width: 720px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
  }

  .card {
    padding: 1.75rem;
  }

  h1 {
    font-size: 1.75rem;
  }

  .button {
    width: auto;
  }
}