* { 
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Consolas', monospace;
}

body {
    background-color: #000000;
    display: flex;
    flex-direction: column;
    justify-content: center; /* Centers vertically */
    align-items: center; /* Centers horizontally */
    min-height: 100vh; /* Ensures full height of viewport */
    color: #00FF95;
    margin: 0;
}

header {
    padding: 20px;
    text-align: center;
    background-color: #1A1A1A;
    width: 100%;
}

.title {
    font-size: 36px;
}

.container {
    width: 640px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center; /* Additional centering for inner content */
    text-align: center;
    flex-grow: 1;
}

.timer-frame {
    border: 2px solid #00FF95;
    padding: 40px;
    margin-bottom: 30px;
}

.timer-display {
    font-size: 92px;
    font-weight: bold;
    color: #00FF95;
}

.input-section {
    margin: 25px 0;
    display: flex;
    align-items: center;
}

#minutes-input {
    width: 100px;
    font-size: 28px;
    background-color: #1A1A1A;
    color: #00FF95;
    border: none;
    padding: 10px;
    text-align: center;
    margin-right: 10px;
}

.minutes-text {
    color: #00FF95;
    font-size: 16px;
}

.button-section {
    margin: 25px 0;
    display: flex;
    gap: 8px;
}

.btn {
    font-size: 14px;
    font-weight: bold;
    padding: 15px 25px;
    background-color: #1A1A1A;
    color: #00FF95;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #002211;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.progress-container {
    width: 450px;
    height: 8px;
    background-color: #1A1A1A;
    margin-top: 30px;
}

.progress-bar {
    width: 0%;
    height: 100%;
    background-color: #00FF95;
    transition: width 1s linear;
}

/* Error state for input */
.error {
    background-color: #330000 !important;
}

footer {
    padding: 10px;
    text-align: center;
    background-color: #1A1A1A;
    width: 100%; /* Ensures footer spans the width */
}