:root { --primary: #2563eb; --bg: #f8fafc; --sidebar: #1e293b; --text-main: #334155; }
* { box-sizing: border-box; }
body { font-family: 'Inter', system-ui, sans-serif; margin: 0; display: flex; height: 100vh; background: var(--bg); color: var(--text-main); transition: 0.3s; }

/* Sidebar */
.sidebar { width: 280px; background: var(--sidebar); color: white; display: flex; flex-direction: column; flex-shrink: 0; }
.sidebar-header { padding: 25px; font-size: 1.5rem; font-weight: bold; background: #0f172a; color: #38bdf8; text-align: center; }
.nav-group { flex: 1; overflow-y: auto; padding: 10px 0; }
.nav-item { display: block; padding: 12px 25px; cursor: pointer; border-bottom: 1px solid #334155; transition: 0.2s; font-size: 0.9rem; opacity: 0.8; color: white; text-decoration: none; }
.nav-item:hover { opacity: 1; background: #334155; }
.nav-item.active { opacity: 1; background: var(--primary); border-inline-start: 5px solid #38bdf8; }

/* Main */
.main-content { flex: 1; overflow-y: auto; padding: 40px; }
.header-area { display: flex; justify-content: space-between; align-items: center; margin-bottom: 30px; }
.tool-card { background: white; padding: 30px; border-radius: 12px; box-shadow: 0 4px 20px rgba(0,0,0,0.05); }

textarea { width: 100%; height: 220px; padding: 15px; border: 1px solid #cbd5e1; border-radius: 8px; font-family: 'Fira Code', monospace; font-size: 14px; margin-bottom: 15px; background: #fff; }
input[type="text"], input[type="email"] { width: 100%; padding: 10px 15px; border: 1px solid #cbd5e1; border-radius: 8px; font-size: 0.95rem; margin-bottom: 15px; background: #fff; }
.controls { display: flex; gap: 10px; margin-bottom: 15px; flex-wrap: wrap; }
footer {margin-top: 30px; padding: 15px; text-align: center; font-size: 0.9rem; color: #666;}

/* Control group styles (checkboxes, number inputs, etc.) */
.control-group { display: flex; align-items: center; gap: 12px; }
.control-group label { display: inline-flex; align-items: center; gap: 8px; font-size: 0.9rem; color: var(--text-main); cursor: pointer; }
.control-group input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--primary); border-radius: 4px; cursor: pointer; }
.control-group input[type="checkbox"]:focus { outline: 2px solid rgba(37,99,235,0.15); outline-offset: 2px; }
.control-group input[type="number"] { width: 70px; padding: 8px 10px; border-radius: 6px; border: 1px solid #cbd5e1; background: white; font-size: 0.9rem; }
.control-group input[type="number"]:focus { box-shadow: 0 0 0 3px rgba(37,99,235,0.06); border-color: var(--primary); }
/* Hide default number spin buttons for a cleaner UI */
.control-group input[type="number"]::-webkit-outer-spin-button,
.control-group input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.control-group input[type="number"] { -moz-appearance: textfield; }

.controls .control-actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

.lang-select { padding: 8px 15px; border-radius: 6px; border: 1px solid #cbd5e1; background: white; cursor: pointer; }

/* Responsive adjustments for control groups */
@media (max-width: 768px) {
  .control-group { width: 100%; justify-content: space-between; gap: 8px; }
  .control-group input[type="number"] { width: 100px; }
}


button { padding: 10px 20px; border: none; border-radius: 6px; cursor: pointer; font-weight: 600; background: var(--primary); color: white; transition: 0.2s; }
button:hover { filter: brightness(1.1); }
.btn-secondary { background: #64748b; }

.info-box { margin-top: 30px; padding: 20px; background: #eff6ff; border-inline-start: 4px solid var(--primary); border-radius: 4px; }
.hidden { display: none; }

/* RTL Support */
[dir="rtl"] .sidebar { border-left: none; border-right: none; }
[dir="rtl"] .nav-item.active { border-inline-start: 5px solid #38bdf8; }

/* Responsive */
@media (max-width: 1024px) {
  .sidebar { width: 220px; }
  .main-content { padding: 30px; }
  .tool-card { padding: 24px; }
}

@media (max-width: 768px) {
  /* Stack sidebar on top for small screens */
  body { flex-direction: column; height: auto; }
  .sidebar { width: 100%; height: auto; position: relative; order: -1; flex-shrink: 0; }
  .sidebar-header { padding: 16px; font-size: 1.125rem; }
  .nav-group { max-height: none; }
  .nav-item { padding: 10px 16px; font-size: 0.95rem; }

  /* Main adjustments */
  .main-content { padding: 20px; }
  .header-area { flex-wrap: wrap; gap: 12px; }
  .controls { flex-direction: column; align-items: stretch; }
  .controls > * { width: 100%; }
  button { width: 100%; }
  textarea { height: 140px; }
}

@media (max-width: 420px) {
  .sidebar-header { font-size: 1rem; padding: 12px; }
  .nav-item { padding: 10px 12px; font-size: 0.9rem; }
  .main-content { padding: 12px; }
  .tool-card { padding: 16px; border-radius: 10px; }
  textarea { font-size: 13px; height: 120px; }
}

#toast {
    visibility: hidden;
    min-width: 250px;
    color: #fff;
    text-align: center;
    border-radius: 8px;
    padding: 16px;
    position: fixed;
    z-index: 9999;
    left: 50%;
    bottom: 30px;
    transform: translateX(-50%);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

#toast.show {
    visibility: visible;
    animation: fadeinout 5s linear forwards;
}

.toastInfo {
    background-color: #334155;
}

.toastError {
    background-color: #dc2626;
}

.toastSuccess {
    background-color: #16a34a;
}

@keyframes fadeinout {
  0%, 100% {
    bottom: 0; opacity: 0;
  }
  20%, 80% {
    bottom: 30px; opacity: 1;
  }
}