/* ============================================
   BASE.CSS - Foundational Element Styles
   HOLISYS - National Fire Detection & Alarm System
   ============================================ */

/* ------------------------------------------
   ROOT & HTML
   ------------------------------------------ */
html {
  font-family: var(--font-primary);
  font-size: 16px;
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* ------------------------------------------
   BODY
   ------------------------------------------ */
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-weight: var(--font-normal);
  overflow-x: hidden;
}

/* ------------------------------------------
   TYPOGRAPHY
   ------------------------------------------ */

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

h1 {
  font-size: var(--text-4xl);
  letter-spacing: var(--tracking-tight);
}

h2 {
  font-size: var(--text-3xl);
  letter-spacing: var(--tracking-tight);
}

h3 {
  font-size: var(--text-2xl);
}

h4 {
  font-size: var(--text-xl);
}

h5 {
  font-size: var(--text-lg);
}

h6 {
  font-size: var(--text-base);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--color-text-muted);
}

/* Paragraphs */
p {
  margin-bottom: var(--space-4);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

p:last-child {
  margin-bottom: 0;
}

/* Links */
a {
  color: var(--color-primary);
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Strong & Emphasis */
strong, b {
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
}

em, i {
  font-style: italic;
}

/* Small Text */
small {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* Code & Preformatted */
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background-color: var(--color-bg-tertiary);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-md);
  color: var(--color-primary);
}

pre {
  font-family: var(--font-mono);
  background-color: var(--color-bg-tertiary);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  margin-bottom: var(--space-4);
}

pre code {
  background: none;
  padding: 0;
  color: inherit;
}

/* ------------------------------------------
   LISTS
   ------------------------------------------ */
ul, ol {
  margin-bottom: var(--space-4);
  padding-left: var(--space-6);
}

ul {
  list-style-type: disc;
}

ol {
  list-style-type: decimal;
}

li {
  margin-bottom: var(--space-2);
  color: var(--color-text-secondary);
}

li::marker {
  color: var(--color-primary);
}

/* Definition Lists */
dt {
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

dd {
  margin-left: var(--space-4);
  margin-bottom: var(--space-3);
  color: var(--color-text-secondary);
}

/* ------------------------------------------
   FORM ELEMENTS
   ------------------------------------------ */

/* Labels */
label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

/* Inputs & Textareas */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="password"],
input[type="number"],
input[type="search"],
input[type="url"],
input[type="date"],
textarea,
select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  border: var(--border-width-1) solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
}

input:hover,
textarea:hover,
select:hover {
  border-color: var(--color-neutral-400);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

input:disabled,
textarea:disabled,
select:disabled {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-muted);
  cursor: not-allowed;
}

/* Textarea specific */
textarea {
  resize: vertical;
  min-height: 120px;
}

/* Select specific */
select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23737373' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  background-size: 1.25rem;
  padding-right: var(--space-10);
}

/* Checkboxes & Radios */
input[type="checkbox"],
input[type="radio"] {
  width: 1.125rem;
  height: 1.125rem;
  margin-right: var(--space-2);
  accent-color: var(--color-primary);
  cursor: pointer;
}

/* ------------------------------------------
   TABLES
   ------------------------------------------ */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--space-6);
}

th, td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: var(--border-width-1) solid var(--color-border);
}

th {
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  background-color: var(--color-bg-secondary);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

td {
  color: var(--color-text-secondary);
}

tr:hover td {
  background-color: var(--color-bg-secondary);
}

/* ------------------------------------------
   HORIZONTAL RULE
   ------------------------------------------ */
hr {
  border: none;
  height: 1px;
  background-color: var(--color-border);
  margin: var(--space-8) 0;
}

/* ------------------------------------------
   BLOCKQUOTES
   ------------------------------------------ */
blockquote {
  border-left: 4px solid var(--color-primary);
  padding-left: var(--space-4);
  margin: var(--space-6) 0;
  font-style: italic;
  color: var(--color-text-secondary);
}

blockquote p:last-child {
  margin-bottom: 0;
}

/* ------------------------------------------
   IMAGES & FIGURES
   ------------------------------------------ */
figure {
  margin: var(--space-6) 0;
}

figcaption {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
  margin-top: var(--space-2);
}

/* ------------------------------------------
   MAIN CONTENT AREA
   ------------------------------------------ */
main {
  flex: 1;
}

/* ------------------------------------------
   SELECTION STYLES
   ------------------------------------------ */
::selection {
  background-color: var(--color-primary);
  color: white;
}

/* ------------------------------------------
   SCROLLBAR STYLES
   ------------------------------------------ */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-neutral-400);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-neutral-500);
}

/* ------------------------------------------
   RESPONSIVE TYPOGRAPHY
   ------------------------------------------ */
@media (min-width: 768px) {
  h1 {
    font-size: var(--text-5xl);
  }

  h2 {
    font-size: var(--text-4xl);
  }

  h3 {
    font-size: var(--text-3xl);
  }
}

@media (min-width: 1024px) {
  h1 {
    font-size: var(--text-6xl);
  }

  h2 {
    font-size: var(--text-5xl);
  }
}

/* ------------------------------------------
   PRINT STYLES
   ------------------------------------------ */
@media print {
  *,
  *::before,
  *::after {
    background: transparent !important;
    color: black !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  a,
  a:visited {
    text-decoration: underline;
  }

  a[href]::after {
    content: " (" attr(href) ")";
  }

  abbr[title]::after {
    content: " (" attr(title) ")";
  }

  pre,
  blockquote {
    border: 1px solid #999;
    page-break-inside: avoid;
  }

  thead {
    display: table-header-group;
  }

  tr,
  img {
    page-break-inside: avoid;
  }

  img {
    max-width: 100% !important;
  }

  p,
  h2,
  h3 {
    orphans: 3;
    widows: 3;
  }

  h2,
  h3 {
    page-break-after: avoid;
  }
}