:root {
    --primary-color: #007aff;
    --secondary-color: #5856d6;
    --background-color: #f0f2f5;
    --text-color: #1d1d1f;
    --card-bg-color: #ffffff;
    --border-color: #e5e5e5;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --primary-glow-color: rgba(0, 122, 255, 0.2);
    --quote-color: #ff9500;
}

body[data-theme="dark"] {
    --primary-color: #0a84ff;
    --secondary-color: #5e5ce6;
    --background-color: #1c1c1e;
    --text-color: #f2f2f7;
    --card-bg-color: #2c2c2e;
    --border-color: #3a3a3c;
    --shadow-color: rgba(0, 0, 0, 0.4);
    --primary-glow-color: rgba(10, 132, 255, 0.3);
    --quote-color: #ff9f0a;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background-color);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    color: var(--text-color);
    text-align: center;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    position: relative;
    background: var(--card-bg-color);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 15px 35px var(--shadow-color);
    max-width: 600px;
    width: 90%;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

.container:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px var(--shadow-color);
}

/* Theme Switcher */
.theme-switcher {
    position: absolute;
    top: 20px;
    right: 20px;
}

.theme-switcher input {
    display: none;
}

.theme-switcher label {
    cursor: pointer;
    display: block;
    width: 50px;
    height: 25px;
    background-color: var(--border-color);
    border-radius: 25px;
    position: relative;
    transition: background-color 0.3s ease;
}

.theme-switcher label span {
    display: block;
    width: 21px;
    height: 21px;
    background-color: white;
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    transition: transform 0.3s ease;
}

.theme-switcher input:checked + label {
    background-color: var(--primary-color);
}

.theme-switcher input:checked + label span {
    transform: translateX(25px);
}


h1 {
    color: var(--primary-color);
    margin-bottom: 30px;
    font-weight: 600;
}

.input-container {
    margin-bottom: 30px;
}

label {
    display: block;
    margin-bottom: 10px;
    font-weight: 400;
    color: var(--secondary-color);
}

input[type="text"] {
    padding: 15px;
    font-size: 16px;
    border-radius: 10px;
    border: 2px solid var(--border-color);
    width: 80%;
    max-width: 300px;
    text-align: center;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 8px rgba(0,0,0,0.05);
    background-color: var(--background-color);
    color: var(--text-color);
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px var(--primary-glow-color);
}

.countdown-container {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.time-card {
    background: linear-gradient(145deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 20px;
    border-radius: 15px;
    min-width: 100px;
    box-shadow: 0 10px 20px var(--primary-glow-color);
    transition: transform 0.3s ease, background 0.3s ease;
}

.time-card:hover {
    transform: translateY(-5px);
}

.time-card span {
    display: block;
    font-size: 48px;
    font-weight: 600;
}

.time-card .label {
    font-size: 16px;
    font-weight: 300;
    text-transform: uppercase;
    letter-spacing: 1px;
}

#result-message {
    font-size: 18px;
    font-weight: 400;
    color: var(--primary-color);
}

#quote {
    font-size: 18px;
    margin-top: 20px;
    font-style: italic;
    color: var(--quote-color);
    opacity: 0;
    transition: opacity 1s ease-in-out, color 0.3s ease;
    min-height: 25px;
}

@media (max-width: 640px) {
    .container {
        padding: 30px;
    }
    .countdown-container {
        gap: 15px;
    }
    .time-card {
        min-width: 80px;
        padding: 15px;
    }
    .time-card span {
        font-size: 36px;
    }
    h1 {
        font-size: 24px;
    }
}

/* Flatpickr Theme */
.flatpickr-calendar {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    box-shadow: 0 5px 15px var(--shadow-color);
    border-radius: 10px;
}

.flatpickr-months .flatpickr-month {
    color: var(--primary-color);
    fill: var(--primary-color);
}

.flatpickr-weekdays {
    background-color: transparent;
}

span.flatpickr-weekday {
    color: var(--secondary-color);
    font-weight: 400;
}

.flatpickr-day {
    color: var(--text-color);
}

.flatpickr-day:hover, .flatpickr-day:focus {
    background-color: var(--border-color);
    color: var(--primary-color);
}

.flatpickr-day.selected, .flatpickr-day.startRange, .flatpickr-day.endRange {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.flatpickr-day.today {
    border-color: var(--secondary-color);
}

.flatpickr-day.today:hover {
    border-color: var(--secondary-color);
    background: var(--secondary-color);
    color: white;
}

.flatpickr-months .flatpickr-prev-month, .flatpickr-months .flatpickr-next-month {
    fill: var(--primary-color);
}

.flatpickr-months .flatpickr-prev-month:hover, .flatpickr-months .flatpickr-next-month:hover {
    fill: var(--secondary-color);
}

.flatpickr-current-month .numInputWrapper span.arrowUp:after {
    border-bottom-color: var(--text-color);
}

.flatpickr-current-month .numInputWrapper span.arrowDown:after {
    border-top-color: var(--text-color);
}

/* Share Button and Menu */
.share-container {
    margin-top: 30px;
    position: relative;
}

#share-button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 10px;
    padding: 15px 30px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 5px 15px var(--primary-glow-color);
}

#share-button:hover {
    background-color: var(--secondary-color);
    box-shadow: 0 8px 20px var(--primary-glow-color);
}

.share-menu {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 10px;
    background-color: var(--card-bg-color);
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-color);
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    z-index: 10;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.share-menu.hidden {
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(10px);
}

.share-menu button {
    background: transparent;
    border: none;
    color: var(--text-color);
    padding: 10px 15px;
    border-radius: 5px;
    cursor: pointer;
    text-align: left;
    transition: background-color 0.2s ease;
    font-family: 'Poppins', sans-serif;
    font-size: 14px;
}

.share-menu button:hover {
    background-color: var(--border-color);
}