/* =====================================================
   FONT FACE DECLARATIONS - FIRA FONTS
===================================================== */
@font-face {
    font-family: 'Fira Sans';
    font-style: normal;
    font-weight: 400;
    src: url('/fonts/FiraSans-Regular.ttf') format('truetype');
    font-display: swap;
}

@font-face {
    font-family: 'Fira Sans';
    font-style: normal;
    font-weight: 600;
    src: url('/fonts/FiraSans-SemiBold.ttf') format('truetype');
    font-display: swap;
}

@font-face {
    font-family: 'Fira Mono';
    font-style: normal;
    font-weight: 400;
    src: url('/fonts/FiraMono-Regular.ttf') format('truetype');
    font-display: swap;
}

/* =====================================================
   ASCII WORDMARK
===================================================== */

.ascii-wordmark {
  font-family: 'Fira Mono', monospace;
  font-size: 12px;
  line-height: 1.1;
  white-space: pre;
  overflow-x: auto;
  text-align: center;
  margin: 20px auto;
  color: var(--color-accent);
}

/* =====================================================
   FOUC PREVENTION - UPDATED
===================================================== */
body {
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

body.theme-applied,
.no-js body {
  opacity: 1;
  visibility: visible;
}

/* =====================================================
   LIGHT THEME
===================================================== */
.light-theme {
  --color-primary: #c4452a;     /* rich ember red */
  --color-secondary: #e67a3a;   /* warm orange */
  --color-tertiary: #d45a3a;    /* red-orange highlight */
  --color-accent: #c4452a;      /* red accent */
  --color-bg: #f8f8f8;          /* light grey background */
  --color-text: #333333;        /* dark text */
  --color-muted: #666666;       /* medium grey */
  --color-muted-dark: #888888;  /* dark grey */
  --color-code: #c4452a;        /* red code */
  --border-color: #c4452a;

  --overlay-bg: rgba(255,255,255,0.95);
  --btn-bg: rgba(255,255,255,0.9);
  --btn-bg-hover: rgba(196,69,42,0.9);
  --blockquote-bg: #f0f0f0;
  --code-bg: #f0f0f0;

  --scrollbar-track: #f8f8f8;
  --scrollbar-thumb: #c4452a;
  --scrollbar-thumb-hover: #e67a3a;
}

/* =====================================================
   DARK THEME
===================================================== */
.dark-theme {
  --color-primary: #4db8e6;           /* Brighter, more vibrant cyan */
  --color-secondary: #6b8cff;         /* Softer, brighter blue */
  --color-tertiary: #5ca8e6;          /* Medium blue-cyan */
  --color-accent: #4db8e6;            /* Bright teal accent */
  --color-bg: #242424;                /* Lighter dark background */
  --color-text: #f5f5f5;              /* Softer white text */
  --color-muted: #cccccc;             /* Much lighter grey */
  --color-muted-dark: #aaaaaa;        /* Medium-light grey */
  --color-code: #4db8e6;              /* Bright teal code */
  --border-color: #4db8e6;            /* Bright teal borders */

  --overlay-bg: rgba(40, 40, 40, 0.95); /* Lighter overlay */
  --btn-bg: rgba(255, 255, 255, 0.15);  /* More visible buttons */
  --btn-bg-hover: rgba(77, 184, 230, 0.9); /* Changed to solid teal on hover */
  --btn-text-hover: #f5f5f5;           /* ADD THIS: White text on hover */
  --blockquote-bg: #363636;           /* Lighter than background */
  --code-bg: #363636;                 /* Lighter code background */

  --scrollbar-track: #2a2a2a;         /* Lighter track */
  --scrollbar-thumb: #4db8e6;         /* Bright teal */
  --scrollbar-thumb-hover: #6b8cff;   /* Bright blue on hover */
}

/* =====================================================
   RESET & BASE TYPOGRAPHY
===================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Fira Sans', sans-serif;
  color: var(--color-text);
}

html, body {
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  scroll-behavior: smooth;
  overflow-x: hidden;
  background: var(--color-bg);
  color: var(--color-text);
  transition: background 0.3s, color 0.3s;
}

/* =====================================================
   CODE & TECHNICAL ELEMENTS
===================================================== */
code, pre, kbd, samp {
  font-family: 'Fira Mono', monospace;
  font-weight: 400;
}

/* =====================================================
   THEME TRANSITIONS
===================================================== */
* {
  transition:
    background-color 0.3s ease,
    color 0.3s ease,
    border-color 0.3s ease;
}

/* =====================================================
   HEADER, MAIN, FOOTER
===================================================== */
header, nav.buttons, main, footer {
  width: 90%;
  max-width: 900px;
  margin: 0 auto;
}

header {
  text-align: center;
  margin-top: 30px;
  padding-top: 30px;
  position: relative;
}

.main-title {
  font-size: 48px;
  color: var(--color-primary);
  margin: 30px 0 20px;
  font-family: 'Fira Sans', sans-serif;
  font-weight: 600;
}

h1, h2, h3 { 
  text-align: center; 
  font-family: 'Fira Sans', sans-serif;
  font-weight: 600;
}
h4,h5,h6,p,blockquote,ul,ol,mark,small,abbr,dfn,q,del,ins,time,address,dl,figure,table { 
  text-align: justify; 
}

/* Headings */
h1 { font-size:36px; margin:20px 0; color: var(--color-primary); }
h2 { font-size:30px; margin:18px 0; color: var(--color-secondary); }
h3 { font-size:26px; margin:15px 0; color: var(--color-tertiary); }
h4 { font-size:22px; margin:12px 0; color: var(--color-accent); }
h5 { font-size:20px; margin:10px 0; color: var(--color-muted); }
h6 { font-size:18px; margin:10px 0; color: var(--color-muted-dark); }

/* Paragraph & Inline Text */
p { margin:15px 0; line-height:1.5; }
b,strong { color: var(--color-primary); }
i,em,dfn { color: var(--color-tertiary); }
u { text-decoration: underline dotted var(--color-primary); }
mark { background: var(--color-primary); color: var(--color-bg); padding:0 4px; }
code { background: var(--code-bg); padding:2px 5px; color: var(--color-code); font-size:90%; white-space: pre-wrap; }
ins { text-decoration: underline; color: var(--color-code); }
small { font-size:80%; color: var(--color-muted); }
abbr { border-bottom:1px dotted var(--color-primary); cursor:help; }
s,del { text-decoration: line-through; color:var(--color-muted-dark); }
time { font-style: italic; color:var(--color-muted); }
address { font-style: normal; color:var(--color-muted); margin:20px 0; }
a {
  color: inherit;
  text-decoration: underline dotted var(--color-primary); 
}

a:hover, a:focus {
  color: inherit;
}

/* =====================================================
   BLOCK ELEMENTS
===================================================== */
blockquote {
  border-left: 4px solid var(--color-primary);
  margin:20px 0;
  padding:12px 16px;
  background: var(--blockquote-bg);
  font-style: italic;
}

ul, ol { margin:15px 0 15px 30px; }
dl { margin:20px 0; }
dt { font-weight: bold; color: var(--color-primary); }
dd { margin-left:30px; margin-bottom:15px; }

figure {
  display:flex;
  flex-direction:column;
  align-items:center;
  margin:30px 0;
}
figcaption { text-align:center; font-size:90%; color:var(--color-muted); margin-top:8px; }

/* Tables */
table {
  width:100%;
  border-collapse: collapse;
  margin:20px 0;
}
th, td { border:2px ridge var(--border-color); padding:10px; text-align:justify; }
thead th { background: var(--color-primary); color:var(--color-bg); }

/* Pre & Code Blocks */
pre {
  background: var(--code-bg);
  color: var(--color-code);
  padding:15px;
  overflow-x:auto;
  margin:20px 0;
  border-left:4px solid var(--color-primary);
  font-family: 'Fira Mono', monospace;
}
pre code { background:none; color:inherit; padding:0; display:block; white-space:pre; }

/* =====================================================
   BUTTONS - UPDATED FOR NAV-BUTTON CLASS
===================================================== */
nav.buttons ul {
  display:flex;
  flex-wrap:wrap;
  gap:0.5rem;
  justify-content:center;
  align-items:center;
  padding:0;
  margin:0;
  list-style:none;
}

nav.buttons ul li { display:flex; }

/* Target all nav buttons with the nav-button class */
nav.buttons a, 
nav.buttons .nav-button {
  font-size:14px;
  color: var(--color-primary);
  text-decoration:none;
  padding:10px 18px;
  border:2px ridge var(--border-color);
  background: var(--btn-bg);
  cursor:pointer;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  line-height:1;
  font-family: 'Fira Sans', sans-serif;
  vertical-align:middle;
  transition: all 0.2s ease-in-out;
}

nav.buttons a *, 
nav.buttons .nav-button * { 
  color: inherit; 
}

nav.buttons a:hover, 
nav.buttons .nav-button:hover {
  background: var(--btn-bg-hover, var(--color-primary));
  color: var(--color-bg);
}

nav.buttons a:hover *, 
nav.buttons .nav-button:hover * { 
  color: inherit; 
}

/* =====================================================
   COLLAPSIBLES
===================================================== */
.collapsible-container {
  display:flex;
  flex-direction:column;
  width:100%;
  margin:30px 0;
}

.collapsible {
  width: 100%;
  background: var(--overlay-bg);
  color: var(--color-primary);
  cursor: pointer;
  padding: 15px 20px;
  border: 2px ridge var(--border-color);
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:14px;
  text-align:left;
  transition: background 0.3s, color 0.3s;
  font-family: 'Fira Sans', sans-serif;
}

.collapsible:hover,
.collapsible.active {
  background: var(--color-primary);
  color: var(--color-bg);
}

.collapsible *, .collapsible .arrow { color: inherit; }

.collapsible-content {
  overflow: hidden;
  max-height:0;
  opacity:0;
  transition: max-height 0.4s ease, opacity 0.4s ease;
  background: var(--overlay-bg);
  border-left:2px ridge var(--border-color);
  border-right:2px ridge var(--border-color);
  border-bottom:2px ridge var(--border-color);
  padding: 0 20px;
}

.collapsible-inner { padding:15px 0; }

.collapsible .arrow {
  display:inline-block;
  transition: transform 0.3s ease;
}

.collapsible.active .arrow { transform: rotate(90deg); }

/* =====================================================
   SCROLLBARS
===================================================== */

/* Webkit browsers */
::-webkit-scrollbar {
  width: 12px;
}
::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}
::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border: 2px solid var(--scrollbar-track);
  transition: background-color 0.2s, border-color 0.2s;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
  border-color: var(--scrollbar-thumb);
}

/* Firefox */
* {
  scrollbar-width: auto;
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

/* =====================================================
   OVERLAYS, HR & TOASTS
===================================================== */
.overlay {
  background: var(--overlay-bg);
  border:4px ridge var(--border-color);
  padding:30px;
  margin:30px auto;
  max-width:95%;
  cursor:default;
  position:relative;
}

hr {
  border:none;
  height:3px;
  background: var(--color-primary);
  margin:30px auto;
  width:95%;
}

#toast-container {
  position:fixed;
  bottom:20px;
  left:50%;
  transform:translateX(-50%);
  display:flex;
  flex-direction:column;
  gap:10px;
  z-index:2000;
  align-items:center;
}

.toast {
  background: var(--overlay-bg);
  color: var(--color-text);
  border:2px ridge var(--border-color);
  padding:10px 15px;
  font-size:14px;
  opacity:0;
  transform: translateY(20px);
  animation: slideUpFade 0.4s forwards, fadeOut 0.4s 3s forwards;
  font-family: 'Fira Sans', sans-serif;
}

@keyframes slideUpFade { to { opacity:1; transform:translateY(0); } }
@keyframes fadeOut { to { opacity:0; transform:translateY(-20px); } }

#current-year {
  color: inherit;
}

/* =====================================================
   COPYABLE ELEMENTS
===================================================== */

/* One-liner (for addresses, short text) */
.copiable-oneliner {
  display: flex;
  gap: 10px;
  align-items: center;
  margin: 15px 0;
  padding: 10px 15px;
  border: 2px ridge var(--border-color);
  background: var(--overlay-bg);
}

.copiable-oneliner .copiable-text {
  flex: 1;
  font-family: 'Fira Mono', monospace;
  font-size: 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Code blocks */
.copiable-code {
  position: relative;
  margin: 20px 0;
}

.copiable-code::after {
  content: '';
  position: absolute;
  top: 10px;
  right: 10px;
  width: 1px;
  height: calc(100% - 20px);
  background: var(--border-color);
}

.copiable-code .nav-button {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 2;
}

/* Blockquotes */
.copiable-blockquote {
  position: relative;
  margin: 20px 0;
}

.copiable-blockquote::after {
  content: '';
  position: absolute;
  top: 10px;
  right: 10px;
  width: 1px;
  height: calc(100% - 20px);
  background: var(--border-color);
}

.copiable-blockquote .nav-button {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 2;
}

/* Paragraphs */
.copiable-paragraph {
  position: relative;
  margin: 20px 0;
  padding: 15px;
  border: 2px ridge var(--border-color);
  background: var(--overlay-bg);
}

.copiable-paragraph::after {
  content: '';
  position: absolute;
  top: 10px;
  right: 10px;
  width: 1px;
  height: calc(100% - 20px);
  background: var(--border-color);
}

.copiable-paragraph .nav-button {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 2;
}

/* Copy button styling - USING EXISTING NAV-BUTTON STYLES */
/* No additional styles needed - they inherit from .nav-button */

/* Responsive design */
@media (max-width: 600px) {
  .copiable-oneliner {
    flex-direction: column;
    align-items: stretch;
  }
  
  .copiable-oneliner .nav-button {
    align-self: flex-end;
    margin-top: 10px;
  }
  
  .copiable-code::after,
  .copiable-blockquote::after,
  .copiable-paragraph::after {
    display: none;
  }
  
  .copiable-code .nav-button,
  .copiable-blockquote .nav-button,
  .copiable-paragraph .nav-button {
    position: relative;
    top: auto;
    right: auto;
    margin-top: 10px;
    align-self: flex-end;
  }
}

/* =====================================================
   BACK TO TOP BUTTON
===================================================== */
#back-to-top {
  position: fixed;
  bottom: 20px; right: 20px;
  background: var(--btn-bg);
  color: var(--color-primary);
  border:2px ridge var(--border-color);
  padding:10px 14px;
  font-size:18px;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
  z-index:1000;
  font-family: 'Fira Sans', sans-serif;
}

#back-to-top.show {
  opacity:1;
  visibility:visible;
}

#back-to-top:hover {
  background: var(--btn-bg-hover, var(--color-primary));
  color: var(--color-bg);
  transform: translateY(-2px);
}

/* =====================================================
   GIFS
===================================================== */
.gif {
  position: fixed;
  z-index:999;
  max-width:100%;
  height:auto;
  pointer-events:none;
  left:10px;
  bottom:10px;
  opacity:1;
  transition: opacity 0.3s ease;
}

/* =====================================================
   FOOTER
===================================================== */
footer {
  margin: 30px 0 0;
  padding-bottom:30px;
  text-align:center;
  font-size:14px;
  color:var(--color-muted-dark);
}

/* =====================================================
   FOCUS STATES
===================================================== */
button:focus-visible, a:focus-visible {
  outline:3px solid var(--color-accent);
  outline-offset:2px;
}

/* =====================================================
   THEME SIDEBAR MENU - CLEANER VERSION WITHOUT COLOR SWATCHES
===================================================== */
.theme-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 350px;
    height: 100vh;
    background: var(--overlay-bg);
    border-left: 4px ridge var(--border-color);
    z-index: 2000;
    transition: right 0.3s ease;
    overflow-y: auto;
    padding: 20px;
}

.theme-sidebar.active {
    right: 0;
}

.theme-sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px ridge var(--border-color);
}

.theme-sidebar-header h3 {
    color: var(--color-primary);
    margin: 0;
    text-align: left;
    font-family: 'Fira Sans', sans-serif;
    font-weight: 600;
}

.close-theme-sidebar {
    font-size: 20px;
    color: var(--color-primary);
    text-decoration: none;
    padding: 5px 10px;
    border: 2px ridge var(--border-color);
    background: var(--btn-bg);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    font-family: 'Fira Sans', sans-serif;
    vertical-align: middle;
    transition: all 0.2s ease-in-out;
}

.close-theme-sidebar:hover {
    background: var(--btn-bg-hover, var(--color-primary));
    color: var(--color-bg);
}

.theme-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Clean theme buttons without color swatches */
.theme-button {
    font-size: 14px;
    color: var(--color-primary);
    text-decoration: none;
    padding: 12px 15px;
    border: 2px ridge var(--border-color);
    background: var(--btn-bg);
    cursor: pointer;
    display: flex;
    align-items: center;
    line-height: 1;
    font-family: 'Fira Sans', sans-serif;
    vertical-align: middle;
    transition: all 0.2s ease-in-out;
    text-align: left;
    width: 100%;
}

.theme-button * { 
    color: inherit;
}

.theme-button:hover {
    background: var(--btn-bg-hover, var(--color-primary));
    color: var(--color-bg);
}

.theme-button:hover * {
    color: inherit;
}

.theme-button.active {
    background: var(--color-primary);
    color: var(--color-bg);
    border-color: var(--color-accent);
}

.theme-button.active * {
    color: inherit;
}

.theme-button .theme-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    flex: 1;
}

.theme-button .theme-name {
    font-size: 14px;
    font-weight: bold;
    line-height: 1.2;
    font-family: 'Fira Sans', sans-serif;
}

.theme-button small {
    font-size: 11px;
    opacity: 0.9;
    line-height: 1.3;
    text-align: left;
    font-family: 'Fira Sans', sans-serif;
}

.theme-sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.theme-sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* =====================================================
   MEDIA QUERIES
===================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition:none !important; animation:none !important; }
  .gif { display:none; }
}

@media (max-width:600px){
  header, nav.buttons, main, footer { width:95%; padding:0 10px; }
  .main-title { font-size:32px; }
  nav.buttons a, nav.buttons button.theme-menu-toggle { font-size:12px; padding:6px 10px; }
  .overlay { padding:20px; }
  blockquote { padding:8px 12px; }
  .gif { left:5px; bottom:5px; }
  .theme-sidebar {
    width: 300px;
    right: -300px;
  }
}

@media (max-width:400px) {
  .theme-sidebar {
    width: 100%;
    right: -100%;
  }
}