/* default settings block of page of website */
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'segoe UI' , Tahoma, Geneva, Verdana, sans-serif;
}
/* Premiun look tech make to background of web */
body{
    background: linear-gradient(135deg, #0f172a, #1e293b);
    color: #f8fafc;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}
/* Main glassmorphism card container */
.app-container{
    background: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 16px;
    width: 100%;
    max-width: 700px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}
/* heading  styling */
header {
    text-align:center;
    margin-bottom:25px;
}

header h1 {
    font-size: 2.5rem;
    color: #38bdf8; /*cyber blue color */
    letter-spacing: 2px;
}

header p {
    color: #94a3b8; /* light gray color */ 
    font-size: 0.95rem;
    margin-top: 5px;
}

/* input Tetxarea BOX styling */ 
.input-section textarea {
    width: 100%;
    height: 200px;
    background-color: #0f172a;
    border: 2px solid #334115;
    border-radius: 10px;
    padding: 15px;
    color: #fff;
    font-size: 1rem;
    resize: none;
    outline: none;
    transition: all 0.3s ease;
}

 /* When Textarea is click to glow in neon glow*/
 .input-section textarea:focus {
    border-color: #38bdf8;
    box-shadow: 0 0 10px rgba(56, 186, 248, 0.2);
 }

/* Live stats bar style */
.stats-bar {
    display: flex;
    justify-content: space-between;
    background: #334115;
    padding: 10px 15px;
    border-radius: 8px;
    margin: 15px 0;
    font-size: 0.9rem;
    font-weight: 600;
}
 .stats-bar span {
    color: #38bdf8;
 }
 /* Gaming Tech style button*/
 .controls button {
    flex: 1 1 150px;
    padding: 12px;
    border: none;
    border-radius: 8px;
    font-weight: bold;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s ease;
 }
.controls {
   display: flex;
   flex-wrap: wrap;
   gap: 10px;
   justify-content: center;
   margin-top: 15px;
}
 #btnUpper {
    background-color: #38bdf8;
    color: #0f172a;
 }
 #btnUpper:hover {
    background-color: #7da2b3;
    transform: translatey(-2px);
 }
 #btnLower {
    background-color: #475569;
    color: #fff;
 }
 #btnLower:hover {
    background-color: #334115;
    transform: translatey(-2px);
 }
 #btnClear {
    background-color: #ef4444;
    color: #fff;
 }
 #btnClear:hover {
    background-color: #0ea5e9;
    transform: translatey(-2px);
 }
 #btnCopy {
   background-color: #10b981;
   color: #fff
 }
 #btnCopy:hover {
   background-color: #059669;
   transform: translateY(-2px);
 }
 #btnSentence {
   background-color: #3b82f6;
   color: white;
 }#btnSentence:hover {
   background-color: #2563eb;
   transform: translateY(-2px);
 }