/* =========================================================
   Handy Box — Global Styles (Clean v3, deduped v17)
   ========================================================= */

/* ============ Root ============ */
:root{
  --c-bg:#f4f4f4; --c-fg:#333; --c-brand:#0069d9; --c-card:#fff; --c-border:#ddd;
  --c-shadow:rgba(0,0,0,.1);
  --c-bg-dark:#1a1a1a; --c-fg-dark:#f4f4f4; --c-card-dark:#2c2c2c; --c-border-dark:#555;
}

/* ============ Reset/Layout ============ */
*{ box-sizing:border-box; }
html,body{ height:100%; margin:0; padding:0; }
body{
  font-family:'Segoe UI', Arial, sans-serif;
  background:var(--c-bg); color:var(--c-fg);
  display:flex; flex-direction:column; min-height:100vh;
  transition:background-color .3s, color .3s;
}
body.dark-mode{ background:var(--c-bg-dark); color:var(--c-fg-dark); }

/* Prevent light flash on dark */
html.dark-mode, html.dark-mode body{ background:#1a1a1a !important; color:#f4f4f4 !important; }

/* ============ Header ============ */
header{ background:var(--c-brand); color:#fff; padding:15px 20px; position:relative; z-index:1500; }
.header-content{ display:flex; justify-content:space-between; align-items:center; gap:12px; }
.logo{ color:#fff; text-decoration:none; }
.logo h1{ margin:0; font-size:1.8em; }
.dark-mode-toggle{
  background:transparent; border:1px solid #fff; color:#fff;
  padding:8px 12px; border-radius:5px; cursor:pointer; font-weight:700; font-size:14px;
}
.dark-mode-toggle:hover{ background:rgba(255,255,255,.18); }

/* ============ Hamburger ============ */
.hamburger-menu{
  display:none; width:30px; height:25px; cursor:pointer;
  flex-direction:column; justify-content:space-around; z-index:3100;
}
.hamburger-menu .bar{ height:3px; background:#fff; border-radius:3px; transition:all .3s; }
.hamburger-menu.active .bar:nth-child(1){ transform:rotate(45deg) translate(5px,5px); }
.hamburger-menu.active .bar:nth-child(2){ opacity:0; }
.hamburger-menu.active .bar:nth-child(3){ transform:rotate(-45deg) translate(5px,-5px); }

/* ============ Sidebar ============ */
.sidebar{
  position:fixed; top:0; left:-100vw; width:86vw; max-width:320px; height:100%;
  background:#fff; color:#333; box-shadow:2px 0 5px rgba(0,0,0,.2);
  padding-top:60px; overflow-y:auto; transition:left .3s ease; z-index:3000;
}
.sidebar.open{ left:0; }
.sidebar ul{ list-style:none; margin:0; padding:0; }
.sidebar ul li a{
  display:block; padding:15px 20px; color:#333; text-decoration:none; transition:background .2s;
}
.sidebar ul li a:hover{ background:#e9e9e9; }

/* Sidebar dark */
body.dark-mode .sidebar{ background:var(--c-card-dark); color:var(--c-fg-dark); }
body.dark-mode .sidebar ul li a{ color:var(--c-fg-dark); }
body.dark-mode .sidebar ul li a:hover{ background:#444; }

/* Dark mode item in sidebar */
.dark-mode-mobile{ border-top:1px solid #ccc; margin-top:10px; padding-top:10px; }
body.dark-mode .dark-mode-mobile{ border-top:1px solid var(--c-border-dark); }
.dark-mode-toggle-menu{
  display:block; width:calc(100% - 40px); margin:0 auto; padding:15px 20px; text-align:center;
  background:transparent; border:1px solid #ccc; color:#333; font-weight:700; border-radius:5px; text-decoration:none;
}
.dark-mode-toggle-menu:hover{ background:#e9e9e9; }
body.dark-mode .dark-mode-toggle-menu{ background:#333; border:1px solid var(--c-border-dark); color:var(--c-fg-dark); }
body.dark-mode .dark-mode-toggle-menu:hover{ background:#444; }

/* Body scroll lock when menu open */
body.menu-open{ overflow:hidden; }

/* Dropdowns (sidebar) */
.dropdown-item{ position:relative; }
.dropdown-item a .arrow{ float:right; transition:transform .3s; }
.dropdown-content{
  position:absolute; top:100%; left:0; display:none; min-width:200px;
  background:#f4f4f4; padding-left:0; margin-top:10px; border-radius:4px;
  box-shadow:0 4px 8px var(--c-shadow); z-index:2200;
}
.dropdown-content a{ padding:10px; display:block; color:#333; text-decoration:none; }
.dropdown-item.active .dropdown-content{ display:block; }
.dropdown-item.active .arrow{ transform:rotate(180deg); }
body.dark-mode .dropdown-content{ background:#333; }
body.dark-mode .dropdown-content a{ color:var(--c-fg-dark); }

/* ============ Main ============ */
main{ flex:1; text-align:center; padding:40px 20px; }
h2{ color:#333; margin:0 0 8px; }
body.dark-mode h2, body.dark-mode p{ color:var(--c-fg-dark); }

.back-button{
  display:inline-block; margin:12px; padding:8px 16px; font-weight:700;
  background:#eee; border:1px solid #ccc; border-radius:6px; color:#333; text-decoration:none;
}
body.dark-mode .back-button{ background:#444; border-color:var(--c-border-dark); color:var(--c-fg-dark); }

/* ============ Tool Containers & Boxes ============ */
.tool-container{ max-width:960px; margin:24px auto; padding:0 16px; }
.tool-section{
  margin:20px 0; padding:20px; border:1px solid var(--c-border);
  border-radius:8px; background:var(--c-card); box-shadow:0 2px 6px var(--c-shadow);
}
body.dark-mode .tool-section{ background:var(--c-card-dark); border-color:var(--c-border-dark); }
.tool-header{ text-align:center; margin-bottom:20px; font-weight:700; color:#333; }
body.dark-mode .tool-header{ color:var(--c-fg-dark); }

/* ============ Inputs ============ */
input, select, textarea, label{ color:inherit; }
textarea{
  width:100%; min-height:120px; padding:12px; font-family:monospace; font-size:14px; resize:vertical;
  border:1px solid #ccc; border-radius:4px; background:#fff;
}
body.dark-mode textarea{ background:#333; color:var(--c-fg-dark); border-color:var(--c-border-dark); }
body.dark-mode select,
body.dark-mode input[type='text'],
body.dark-mode input[type='number'],
body.dark-mode input[type='time'],
body.dark-mode input[type='file'],
body.dark-mode input[type='range']{
  background:#333; color:var(--c-fg-dark); border:1px solid var(--c-border-dark);
}
body.dark-mode label{ color:var(--c-fg-dark); }

/* ============ Buttons (global) ============ */
button, .copy-button, .convert-button{
  display:inline-block; padding:10px 16px; border:none; border-radius:5px; cursor:pointer;
  background:#007bff; color:#fff; font-weight:700; transition:background-color .2s, opacity .2s;
}
button:hover, .copy-button:hover, .convert-button:hover{ background:#0056b3; }
.copy-button{ background:#6c757d; }
.copy-button:hover{ background:#545b62; }

/* ============ Color box ============ */
.color-box{ width:150px; height:150px; border:2px solid #333; border-radius:8px; margin:20px auto; }
body.dark-mode .color-box{ border-color:var(--c-fg-dark); }

/* ============ Icon Cards (Home) ============ */
.tool-icons-container{
  display:flex; justify-content:center; gap:30px; flex-wrap:wrap; margin-top:40px; position:relative;
}
.icon-card{ position:relative; width:150px; text-align:center; transition:transform .3s; overflow:visible; z-index:1; }
.icon-card:hover{ transform:translateY(-5px); }
.icon-box{
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  background:var(--c-card); color:#333; border-radius:12px; width:100%; height:150px;
  box-shadow:0 4px 8px var(--c-shadow);
}
.icon-emoji{ font-size:3em; margin-bottom:10px; }
.icon-label{ font-weight:700; color:#000; font-size:1em; }
.icon-card a{ text-decoration:none !important; color:inherit; }
.icon-dropdown{
  display:none; position:absolute; top:calc(100% + 8px); left:50%; transform:translateX(-50%);
  min-width:220px; background:#fff; border-radius:4px; box-shadow:0 4px 8px var(--c-shadow);
  z-index:2000; padding:5px 0; max-height:60vh; overflow-y:auto; pointer-events:auto;
}
.icon-card.active .icon-dropdown{ display:flex; flex-direction:column; }
.icon-dropdown a{ padding:10px; color:#333; text-decoration:none; }
.icon-dropdown a:hover{ background:#f4f4f4; }
.icon-card.active{ margin-bottom:140px; }
body.dark-mode .icon-box{ background:var(--c-card-dark); color:var(--c-fg-dark); }
body.dark-mode .icon-dropdown{ background:#333; }
body.dark-mode .icon-dropdown a{ color:var(--c-fg-dark); }
body.dark-mode .icon-dropdown a:hover{ background:#444; }

/* ============ Converter Tools Grid (category page) ============ */
.page-title, h2{ text-align:center; margin:24px 0 8px; }
.page-description, main p{ text-align:center; max-width:640px; margin:0 auto 20px; opacity:.9; }

.converter-categories{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(150px, 1fr));
  gap:18px;
  max-width:760px;
  margin:24px auto 0;
  padding:0 12px;
  justify-items:center;
}
.converter-categories .icon-card{ width:100% !important; max-width:180px; }
.converter-categories .icon-box{
  width:100%; height:140px; padding:14px;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:10px;
  border-radius:12px; background:var(--c-card); box-shadow:0 4px 8px var(--c-shadow);
}
.converter-categories .icon-emoji,
.converter-categories .icon-emoji img{
  width:48px; height:48px; display:block; object-fit:contain;
}
.converter-categories .icon-label{
  margin:0; font-weight:700; text-align:center; line-height:1.2;
  min-height:2.6em; display:flex; align-items:center; justify-content:center; color:#000;
}
body.dark-mode .converter-categories .icon-box{
  background:var(--c-card-dark); color:var(--c-fg-dark);
  box-shadow:0 4px 8px rgba(0,0,0,.35);
}
body.dark-mode .converter-categories .icon-label{ color:var(--c-fg-dark); }

/* ============ Footer (sticky) ============ */
footer{ width:100%; text-align:center; padding:15px; background:#333; color:#fff; margin-top:auto; }
body.dark-mode footer{ background:#111; }

/* ============ IP page header controls ============ */
.tool-header-wrap{ position:relative; margin-bottom:10px; min-height:40px; }
.tool-header{ margin:0; text-align:center; font-weight:700; font-size:1.1em; width:100%; line-height:1.2; }
.header-controls{
  position:absolute; right:12px; top:50%; transform:translateY(-50%);
  display:flex; gap:8px; align-items:center; white-space:nowrap; z-index:1200;
}
.history-btn{
  position:static !important; width:auto !important; white-space:nowrap;
  display:inline-flex; align-items:center; justify-content:center;
  padding:6px 10px; border-radius:6px; font-size:14px; font-weight:600;
  background:#0078ff; color:#fff; border:none; cursor:pointer;
}
.history-btn:hover{ background:#005fcc; }
body.dark-mode .history-btn{ background:#4a90e2; }
body.dark-mode .history-btn:hover{ background:#337ac9; }
.history-box{ display:none; margin-top:10px; padding:10px; border:1px dashed rgba(0,0,0,.15); border-radius:10px; }
.history-box.show{ display:block; }
body.dark-mode .history-box{ border-color:rgba(255,255,255,.25); }
.history-note{ display:block; margin-top:6px; opacity:.7; font-size:12px; }
.hidden{ display:none !important; }

/* ============ Mobile tweaks ============ */
@media (max-width:768px){
  .hamburger-menu{ display:flex; }
  .dark-mode-toggle{ display:none !important; }
  .sidebar{ width:86vw; max-width:320px; }
  .tool-icons-container{ flex-direction:column; align-items:center; gap:16px; }
  .icon-card{ width:80%; }
  input[type="text"], input[type="number"], input[type="time"], input[type="file"],
  select, .copy-button, .convert-button{ width:100%; }
}
@media (max-width:480px){
  .header-controls{ right:8px; gap:6px; }
  .history-btn{ padding:5px 8px; font-size:13px; }
  .converter-categories{ max-width:420px; grid-template-columns:repeat(2, minmax(0, 1fr)); }
}

/* Accessibility */
:focus-visible{ outline:2px solid #4aa3ff; outline-offset:2px; }
button, .dark-mode-toggle, .history-btn{ min-height:40px; min-width:40px; }
@media (prefers-reduced-motion: reduce){
  *{ animation:none !important; transition:none !important; }
}

/* Unit Tools headings */
.unit-label{ color:#333; font-weight:700; }
body.dark-mode .unit-label{ color:var(--c-fg-dark); }

/* ===== Feedback section (Home) ===== */
.feedback-section {
  max-width: 700px;
  margin: 40px auto 32px;
  padding: 20px 18px 24px;
  border-radius: 12px;
  border: 1px solid var(--c-border);
  background: var(--c-card);
  box-shadow: 0 4px 10px var(--c-shadow);
  text-align: left;
}

body.dark-mode .feedback-section {
  background: var(--c-card-dark);
  border-color: var(--c-border-dark);
}

.feedback-title {
  margin: 0 0 6px;
  text-align: left;
}

.feedback-description {
  margin: 0 0 14px;
  opacity: 0.85;
}

.feedback-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

#feedbackMessage {
  min-height: 110px;
  padding: 10px;
  font-family: inherit;
  font-size: 14px;
  resize: vertical;
  border-radius: 6px;
  border: 1px solid #ccc;
}

body.dark-mode #feedbackMessage {
  background: #333;
  color: var(--c-fg-dark);
  border-color: var(--c-border-dark);
}

#feedbackEmail {
  padding: 9px 10px;
  border-radius: 6px;
  border: 1px solid #ccc;
  font-size: 14px;
}

body.dark-mode #feedbackEmail {
  background: #333;
  color: var(--c-fg-dark);
  border-color: var(--c-border-dark);
}

#feedbackSubmitBtn {
  align-self: flex-start;
  padding: 9px 16px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  font-weight: 700;
  background: #007bff;
  color: #fff;
  transition: background-color 0.2s, transform 0.15s;
}

#feedbackSubmitBtn:hover {
  background: #0056b3;
  transform: translateY(-1px);
}

#feedbackSubmitBtn:disabled {
  opacity: 0.6;
  cursor: default;
  transform: none;
}

/* status text + animation */
.feedback-status {
  min-height: 18px;
  font-size: 13px;
  margin-top: 8px;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.feedback-status.show {
  opacity: 0.95;
  transform: translateY(0);
}

.feedback-status.success {
  color: #1f9d55;
}

.feedback-status.error {
  color: #e3342f;
}

.ip-history-list{
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: monospace;
  font-size: 0.9rem;
}
.ip-history-list li{
  padding: 4px 0;
  border-bottom: 1px solid rgba(0,0,0,0.08);
}
body.dark-mode .ip-history-list li{
  border-bottom-color: rgba(255,255,255,0.15);
}