/* =========================================
   CORPORATE CSS BASE STYLESHEET
   Author: [Your Company Name]
   Version: 1.0
   Description: Corporate-wide base styles for all common HTML elements
   ========================================= */

/* ------------------------------
   CSS VARIABLES (Corporate Theme)
------------------------------ */
:root {
  --color-primary: #004080;
  --color-secondary: #0073e6;
  --color-accent: #0099cc;
  --color-bg: #f8f9fb;
  --color-bg-alt: #ffffff;
  --color-border: #d1d5db;
  --color-text: #1f2937;
  --color-text-light: #6b7280;
  --color-success: #16a34a;
  --color-danger: #dc2626;
  --color-warning: #f59e0b;
  --color-info: #0284c7;

  --font-family-sans: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-family-mono: "Fira Code", Menlo, monospace;

  --border-radius: 6px;
  --transition-speed: 0.25s;
}

/* ------------------------------
   GLOBAL RESETS & BASE STYLES
------------------------------ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-sans);
  font-size: 16px;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  margin: 0;
  padding: 0;
}

/* ------------------------------
   TYPOGRAPHY
------------------------------ */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-primary);
  font-weight: 600;
  line-height: 1.3;
  margin-top: 1.2em;
  margin-bottom: 0.5em;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; color: var(--color-text-light); }

p {
  margin: 0 0 1em;
}

small {
  color: var(--color-text-light);
  font-size: 0.875rem;
}

a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color var(--transition-speed);
}
a:hover, a:focus {
  color: var(--color-accent);
  text-decoration: underline;
}

/* ------------------------------
   LISTS
------------------------------ */
ul, ol {
  margin: 0 0 1em 1.5em;
}
li {
  margin-bottom: 0.4em;
}

/* ------------------------------
   TABLES
------------------------------ */
table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-bg-alt);
  margin-bottom: 1.5em;
  border: 1px solid var(--color-border);
}

th, td {
  padding: 0.75em 1em;
  border: 1px solid var(--color-border);
  text-align: left;
}

th {
  background-color: var(--color-primary);
  color: #fff;
  font-weight: 600;
}

tr:nth-child(even) {
  background-color: #f1f5f9;
}

/* ------------------------------
   FORMS
------------------------------ */
input, select, textarea, button {
  font-family: inherit;
  font-size: 1rem;
  padding: 0.6em 0.75em;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  outline: none;
  transition: all var(--transition-speed);
}

input:focus, select:focus, textarea:focus {
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(0, 115, 230, 0.2);
}

button {
  cursor: pointer;
  font-weight: 600;
  background-color: var(--color-primary);
  color: #fff;
  border: none;
}
button:hover {
  background-color: var(--color-secondary);
}
button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Checkbox and Radio */
input[type="checkbox"], input[type="radio"] {
  width: auto;
  margin-right: 0.5em;
}

/* ------------------------------
   LAYOUT ELEMENTS
------------------------------ */
header, footer, main, section, article, aside, nav {
  padding: 1.5em;
  margin-bottom: 1em;
  background-color: var(--color-bg-alt);
  border-radius: var(--border-radius);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

footer {
  font-size: 0.875rem;
  color: var(--color-text-light);
  text-align: center;
}

/* ------------------------------
   ALERTS & STATUS
------------------------------ */
.alert {
  padding: 1em;
  border-radius: var(--border-radius);
  margin: 1em 0;
  border-left: 4px solid;
}

.alert.success { border-color: var(--color-success); background: #ecfdf5; color: var(--color-success); }
.alert.error   { border-color: var(--color-danger); background: #fef2f2; color: var(--color-danger); }
.alert.warning { border-color: var(--color-warning); background: #fffbeb; color: var(--color-warning); }
.alert.info    { border-color: var(--color-info); background: #f0f9ff; color: var(--color-info); }

/* ------------------------------
   BUTTON VARIANTS
------------------------------ */
.btn {
  display: inline-block;
  padding: 0.6em 1.2em;
  border-radius: var(--border-radius);
  border: none;
  font-weight: 600;
  transition: background var(--transition-speed), box-shadow var(--transition-speed);
}

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

.btn-secondary { background: #e5e7eb; color: var(--color-text); }
.btn-secondary:hover { background: #d1d5db; }

.btn-danger    { background: var(--color-danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }

/* ------------------------------
   UTILITIES
------------------------------ */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-light); }

.mt-1 { margin-top: 0.5em; }
.mt-2 { margin-top: 1em; }
.mb-1 { margin-bottom: 0.5em; }
.mb-2 { margin-bottom: 1em; }

.p-1 { padding: 0.5em; }
.p-2 { padding: 1em; }

.hidden { display: none !important; }

/* ------------------------------
   RESPONSIVE
------------------------------ */
@media (max-width: 768px) {
  body {
    font-size: 15px;
  }
  table {
    font-size: 0.9rem;
  }
  header, footer, main, section {
    padding: 1em;
  }
}

/* NAVIGATION STYLES */


.menu {
  flex-grow: 1;
  padding: 1em 0;
}

.menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.menu li {
  margin: 0.2em 0;
}

.menu a {
  display: flex;
  align-items: center;
  gap: 1em;
  padding: 0.75em 1.5em;
  color: var(--color-text);
  text-decoration: none;
  transition: background var(--transition), padding-left var(--transition);
  white-space: nowrap;
}

.menu a:hover {
  background: var(--color-hover);
  padding-left: 1.75em;
}

.menu a.active {
  background: var(--color-primary);
}

.menu i {
  font-size: 1.2rem;
  min-width: 24px;
  text-align: center;
}

/* Hide labels when collapsed */
.sidebar:not(:hover) .menu span {
  opacity: 0;
  visibility: hidden;
  width: 0;
  max-width:0;
}

/* ------------------------
   SIGN OUT BUTTON
------------------------ */
.signout {
  padding: 1.5em;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.signout button {
  width: 100%;
  padding: 0.75em;
  border: none;
  border-radius: var(--border-radius);
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

.signout button:hover {
  background: var(--color-secondary);
  transform: scale(1.03);
}

/* Hide text when collapsed */
.sidebar:not(:hover) .signout button span {
  display: none;
}

/* ------------------------
   MAIN CONTENT
------------------------ */
.content {
  margin-left: 250px;
  padding: 2em;
  flex-grow: 1;
  transition: margin-left var(--transition);
}

.sidebar:not(:hover) ~ .content {
  margin-left: 80px;
}

/* ------------------------
   RESPONSIVE
------------------------ */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    z-index: 999;
  }

  .content {
    margin-left: 80px;
  }
}