/* --- Variabel Global untuk Tema --- */
:root {
    --bg-color: #121212;
    --container-color: #1E1E1E;
    --primary-text-color: #EAEAEA;
    --secondary-text-color: #888888;
    --accent-color: #1ABC9C; /* Teal */
    --accent-color-hover: #16a085;
    --accent-color-rgb: 26, 188, 156; /* Nilai RGB untuk efek shadow */
    --warning-color: #F39C12; /* Oranye */
    --font-family: 'Poppins', sans-serif;
}

/* --- Reset dan Gaya Dasar Body --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background: var(--bg-color);
    color: var(--primary-text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 1rem;
}

/* --- Kontainer Utama --- */
.timer-container {
    background-color: var(--container-color);
    /* Padding ditambah untuk memberi ruang pada efek glow */
    padding: 3rem 4rem; 
    border-radius: 20px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
    text-align: center;
    width: 100%;
    max-width: 650px;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* --- Tampilan Timer Artistik --- */
.timer-display {
    display: flex;
    justify-content: center;
    align-items: baseline;
    font-size: clamp(3rem, 18vw, 7rem);
    font-weight: 700;
    color: var(--primary-text-color);
    text-shadow: 0 0 15px rgba(var(--accent-color-rgb), 0.5), 0 0 5px rgba(var(--accent-color-rgb), 0.3);
}

.timer-display span {
    padding: 0 0.1em;
}

.timer-display .separator {
    color: var(--secondary-text-color);
    font-weight: 400;
    animation: blink 1.5s infinite;
    margin: 0 0.2em;
}

@keyframes blink {
    50% { opacity: 0.3; }
}

.timer-display.times-up {
    color: var(--warning-color);
    text-shadow: 0 0 15px rgba(243, 156, 18, 0.6);
    animation: pulse 0.8s infinite alternate;
}

@keyframes pulse {
    from { transform: scale(1); }
    to { transform: scale(1.03); }
}

/* --- Grup Input Waktu --- */
.timer-inputs {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.input-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.input-group input {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--secondary-text-color);
    border-radius: 8px;
    color: var(--primary-text-color);
    font-size: 1.2rem;
    font-family: var(--font-family);
    width: 70px;
    text-align: center;
    padding: 0.5rem;
    transition: all 0.3s ease;
}

/* Menghilangkan panah default pada input number */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
input[type=number] {
    -moz-appearance: textfield;
}

.input-group input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 10px rgba(var(--accent-color-rgb), 0.5);
}

.input-group label {
    font-size: 0.8rem;
    color: var(--secondary-text-color);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* --- Tombol Kontrol --- */
.timer-controls {
    display: flex;
    justify-content: center;
    gap: 1.2rem;
    flex-wrap: wrap;
}

.timer-controls button {
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 600;
    padding: 0.8rem 1.8rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
}

#start-btn {
    background-color: var(--accent-color);
    color: #000;
}

#start-btn:hover {
    background-color: var(--accent-color-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.5);
}

#pause-btn {
    background-color: var(--warning-color);
    color: #000;
}

#pause-btn:hover {
    background-color: #d88e0b;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.5);
}

#reset-btn {
    background-color: var(--secondary-text-color);
    color: var(--bg-color);
}

#reset-btn:hover {
    background-color: #999;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.5);
}

.timer-controls button:active {
    transform: translateY(0);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.4);
}

.timer-controls button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
}

.hidden {
    display: none;
}

/* --- Media Queries untuk Responsivitas --- */
@media (max-width: 600px) {
    .timer-container {
        padding: 2.5rem;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .timer-container {
        padding: 2rem 1.5rem;
    }
    .timer-display {
        font-size: clamp(2.5rem, 15vw, 5rem);
    }
    .timer-inputs {
        gap: 1rem;
    }
    .input-group input {
        width: 60px;
    }
    .timer-controls {
        gap: 0.8rem;
    }
    .timer-controls button {
        padding: 0.7rem 1.2rem;
        font-size: 0.9rem;
    }
}