/* ==========================
   Theme Variables
========================== */
:root {
  --bg: #0b0b0b;
  --card-bg: #151515;
  --accent: #6be3ff;
  --accent-light: #8ef5ff;
  --text: #e0e0e0;
  --text-muted: #a0a0a0;
}

[data-theme="light"] {
  --bg: #fdfdfd;
  --card-bg: #ffffff;
  --accent: #0077ff;
  --accent-light: #3399ff;
  --text: #111111;
  --text-muted: #555555;
}

/* ==========================
   Global Styles
========================== */
body {
  background-color: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", Roboto, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem;
  margin: 0;
}

h1, h2, h3 {
  color: var(--accent);
  text-align: center;
}

p.notice {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
  max-width: 90%;
  margin-bottom: 1.5rem;
}

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

a:hover {
  color: var(--accent-light);
}

/* ==========================
   Container / Card
========================== */
.container {
  background-color: var(--card-bg);
  padding: 1.5rem;
  border-radius: 1rem;
  box-shadow: 0 0 10px rgba(107, 227, 255, 0.15);
  width: 100%;
  max-width: 420px;
  margin-bottom: 2rem;
}

/* ==========================
   Form Elements
========================== */
label {
  display: block;
  margin-top: 1rem;
  font-size: 0.95rem;
  font-weight: 600;
}

input {
  width: 100%;
  padding: 0.75rem;
  margin-top: 0.4rem;
  border: none;
  border-radius: 0.5rem;
  background-color: #1d1d1d;
  color: var(--text);
  font-size: 1rem;
}

input:focus {
  outline: 2px solid var(--accent);
}

button {
  margin-top: 1.8rem;
  width: 100%;
  padding: 0.9rem;
  font-size: 1rem;
  border: none;
  border-radius: 0.6rem;
  background-color: var(--accent);
  color: #000;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

button:hover {
  background-color: var(--accent-light);
}

button:active {
  transform: scale(0.98);
}

/* ==========================
   Storage Buttons (Save / Load / Clear)
========================== */
.storage-buttons {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.storage-buttons button {
  flex: 1 1 auto;
  min-width: 100px;
  background-color: var(--card-bg);
  color: var(--accent);
  border: 1px solid var(--accent);
  font-weight: 600;
  padding: 0.6rem;
  border-radius: 0.5rem;
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.1s ease;
}

.storage-buttons button:hover {
  background-color: var(--accent);
  color: #000;
}

.storage-buttons button:active {
  transform: scale(0.95);
}

/* ==========================
   Result Box
========================== */
.result {
  margin-top: 1.8rem;
  background-color: #1a1a1a;
  padding: 1.2rem;
  border-radius: 0.6rem;
  text-align: center;
  word-wrap: break-word;
}

.result h3 {
  color: var(--accent);
}

.pdf-btn {
  margin-top: 1rem;
  background-color: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
}

.pdf-btn:hover {
  background-color: var(--accent);
  color: #000;
}

/* ==========================
   Responsive
========================== */
@media (max-width: 500px) {
  h1 {
    font-size: 1.5rem;
  }
  .container {
    padding: 1.2rem;
  }
  button {
    font-size: 0.95rem;
  }
}

/* ==========================
   Height Converter Buttons
========================== */
.converter-buttons {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1.2rem;
  flex-wrap: wrap;
}

.converter-buttons button {
  flex: 1 1 auto;
  min-width: 140px;
  background-color: var(--card-bg);
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.7rem 1rem;
  border-radius: 0.6rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.1s ease;
}

.converter-buttons button:hover {
  background-color: var(--accent);
  color: #000;
}

.converter-buttons button:active {
  transform: scale(0.96);
}

/* Compact layout for mobile */
@media (max-width: 500px) {
  .converter-buttons {
    flex-direction: column;
    gap: 0.5rem;
  }
}

/* ==========================
   Theme Toggle & Home Button Placement
========================== */
#theme-toggle,
#home-button {
  position: fixed;         /* always visible */
  bottom: 1rem;            /* distance from bottom */
  z-index: 1000;           /* stay above other elements */
  padding: 0.35rem 0.75rem;/* thumb-friendly */
  border-radius: 0.4rem;
  border: none;
  cursor: pointer;
  font-size: 0.8rem;
  background-color: var(--accent);
  color: #000;
  font-weight: 700;
  transition: background-color 0.2s ease, transform 0.1s ease;

  width: auto;             /* prevent full-width stretching */
  text-align: center;      /* center text inside */
}

/* Positioning individually */
#theme-toggle {
  left: 1rem;
}

#home-button {
  left: 5.5rem; /* offset next to theme toggle */
}

/* Hover & Active states */
#theme-toggle:hover,
#home-button:hover {
  background-color: var(--accent-light);
}

#theme-toggle:active,
#home-button:active {
  transform: scale(0.95);
}

/* Responsive adjustment for smaller screens */
@media (max-width: 500px) {
  #theme-toggle,
  #home-button {
    font-size: 0.7rem;
    padding: 0.25rem 0.6rem;
  }

  #home-button {
    left: 4.8rem; /* slightly closer on smaller screens */
  }
}

/* ==========================
   Site Banner (W.I.P.)
========================== */
.site-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  text-align: center;
  padding: 0.6rem 0.5rem;
  background-color: rgba(107, 227, 255, 0.15); /* subtle cyan glow */
  color: var(--text-muted);
  font-size: 0.85rem;
  backdrop-filter: blur(4px);
  border-top: 1px solid var(--accent);
  z-index: 999;
}

.site-banner strong {
  color: var(--accent);
  font-weight: 700;
}

/* ==========================
    Converter Links
========================== */
.converter-link {
  margin-top: 1rem;
  text-align: center;
}

.converter-link a {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  border-radius: 0.4rem;
  background-color: var(--accent);
  color: #000;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.converter-link a:hover {
  background-color: var(--accent-light);
}

.converter-link a:active {
  transform: scale(0.95);
}

/* Responsive tweak for small screens */
@media (max-width: 500px) {
  .converter-link a {
    font-size: 0.75rem;
    padding: 0.3rem 0.6rem;
  }
}