:root {
    --bg-color: #f0f2f5;
    --container-bg: #ffffff;
    --text-color: #2c3e50;
    --primary-color: #3498db;
    --secondary-color: #e74c3c;
    --accent-color: #f1c40f;
    --success-color: #2ecc71;
    --gradient-1: linear-gradient(45deg, #00b4d8, #48cae4);
    --gradient-2: linear-gradient(45deg, #ff6b6b, #ff8585);
}

/* Dark theme colors */
[data-theme="dark"] {
    --bg-color: #1a1a2e;
    --container-bg: #16213e;
    --text-color: #e0e0e0;
    --primary-color: #00b4d8;
    --secondary-color: #ff6b6b;
    --accent-color: #ffd93d;
    --gradient-1: linear-gradient(45deg, #0077b6, #00b4d8);
    --gradient-2: linear-gradient(45deg, #520000, #ff6b6b);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Poppins", sans-serif;
}

body {
    background: var(--bg-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-color);
    transition: all 0.5s ease;
    background-image: radial-gradient(circle at 10% 20%,
            rgba(0, 0, 0, 0.02) 0%,
            transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(0, 0, 0, 0.02) 0%, transparent 20%),
        linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, transparent 100%);
}

.container {
    background: var(--container-bg);
    padding: 2.5rem;
    border-radius: 1.5rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    width: 90%;
    max-width: 600px;
    transition: all 0.5s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.container::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 100%;
    background: linear-gradient(45deg,
            transparent,
            rgba(255, 255, 255, 0.1),
            transparent);
    transform: translateX(-100%);
    animation: shine 8s infinite;
}

@keyframes shine {
    0% {
        transform: translateX(-100%);
    }

    20% {
        transform: translateX(100%);
    }

    100% {
        transform: translateX(100%);
    }
}

.app-title {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
    color: var(--text-color);
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.app-title i {
    font-size: 2.5rem;
    background: var(--gradient-1);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-right: 0.8rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0% {
        transform: translateY(0px) rotate(0deg);
    }

    50% {
        transform: translateY(-10px) rotate(5deg);
    }

    100% {
        transform: translateY(0px) rotate(0deg);
    }
}

.theme-toggle {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 2rem;
}

.theme-toggle input {
    display: none;
}

.theme-toggle label {
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    background: rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.1);
}

.theme-toggle label:hover {
    transform: scale(1.05);
    background: var(--gradient-1);
    color: white;
}

.input-section {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

#todoInput
{
    flex: 100%;
    padding: 1rem;
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-radius: 1rem;
    font-size: 1rem;
    color: var(--text-color);
    background: var(--container-bg);
    transition: all 0.3s ease;
    min-width: 200px;
}

/* #todoInput, */
#timerInput,
#prioritySelect {
    flex: 1;
    padding: 1rem;
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-radius: 1rem;
    font-size: 1rem;
    color: var(--text-color);
    background: var(--container-bg);
    transition: all 0.3s ease;
    min-width: 200px;
}

#todoInput:focus,
#timerInput:focus,
#prioritySelect:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(52, 152, 219, 0.2);
    transform: translateY(-2px);
}

.add-btn,
.clear-completed-btn,
.install-btn {
    padding: 0.7rem 1rem;
    background: var(--gradient-1);
    color: white;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.clear-completed-btn {
    background: var(--gradient-2);
}

.install-btn {
    display: none;
    margin: 1rem auto ;
    background: var(--gradient-1);
}

.add-btn:hover,
.clear-completed-btn:hover,
.install-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

.add-btn::after {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(45deg);
    transition: 0.5s;
}

.add-btn:hover::after {
    left: 100%;
}

.todo-list {
    list-style: none;
    padding: 0;
}

.todo-item {
    display: flex;
    align-items: center;
    padding: 1.2rem;
    background: var(--container-bg);
    margin-bottom: 1rem;
    border-radius: 1rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
    cursor: move;
    /* Show move cursor */
}

.todo-item::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 3px;
    background: var(--gradient-1);
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.todo-item:hover::before {
    transform: scaleY(1);
}

.todo-item:hover {
    transform: translateX(5px) translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.todo-item.completed {
    opacity: 0.7;
    background: rgba(52, 152, 219, 0.05);
}

.todo-text {
    flex: 1;
    margin: 0 1rem;
    font-size: 1.1rem;
}

.timer-text {
    font-size: 0.9rem;
    color: var(--secondary-color);
    margin-left: 1rem;
    font-weight: bold;
}

.todo-actions {
    display: flex;
    gap: 0.8rem;
}

.todo-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.4rem;
    transition: all 0.3s ease;
    padding: 0.5rem;
    border-radius: 50%;
}

.complete-btn {
    color: var(--primary-color);
}

.delete-btn {
    color: var(--secondary-color);
}

.edit-btn {
    color: var(--accent-color);
}

.todo-btn:hover {
    transform: scale(1.2) rotate(15deg);
}

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    max-width: 280px;
    padding: 1rem 2rem;
    border-radius: 1rem;
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transform: translateX(150%);
    transition: transform 0.3s ease;
    z-index: 1000;
}

.notification.show {
    transform: translateX(0);
}

.priority-high {
    border-left: 4px solid var(--secondary-color);
}

.priority-medium {
    border-left: 4px solid var(--accent-color);
}

.priority-low {
    border-left: 4px solid var(--success-color);
}

.progress-bar {
    height: 5px;
    background: var(--gradient-1);
    margin-top: 2rem;
    margin-bottom: 2rem;
    border-radius: 10px;
    transition: width 0.3s ease;
    position: relative;
}

.progress-text {
    position: absolute;
    top: -25px;
    right: 0;
    font-size: 0.7rem;
    color: var(--text-color);
}

.completed-text {
    position: absolute;
    bottom: -25px;
    right: 0;
    font-size: 0.7rem;
    color: var(--text-color);
}

.stats-container {
    display: flex;
    justify-content: space-around;
    margin: 1rem 0;
    padding: 0.4rem;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 1rem;
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-color);
}

/* Drag and drop styles */
.todo-item.sortable-ghost {
    opacity: 0.4;
    background: var(--primary-color);
}

.todo-item.sortable-drag {
    opacity: 0.8;
    transform: scale(1.05);
}

/* Copyright styles */
.copyright {
    text-align: center;
    padding-top: 1rem;
    border-top: 1px solid var(--bg-color);
    font-size: 0.9rem;
    color: var(--text-color);
    opacity: 0.8;
}

.copyright a {
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.3s ease;
}

.copyright a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 480px) {
    .container {
        padding: 1.5rem;
    }

    .input-section {
        flex-direction: column;
    }

    .add-btn,
    .clear-completed-btn {
        width: 100%;
    }

    .app-title {
        font-size: 1.5rem;
    }

    .stats-container {
        flex-wrap: wrap;
        gap: 1rem;
    }
    .todo-item{
        padding: 0.6rem 0.2rem ;
    }
}