@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #121212;
    --color-secondary: #1e1e1e;
    --color-accent: #ff4757;
    --color-text: #ffffff;
    --color-text-secondary: #b3b3b3;
    --color-border: rgba(255, 255, 255, 0.15);
    --font-primary: 'Poppins', sans-serif;
}

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

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 90%;
    max-width: 600px;
    background: var(--color-secondary);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.5);
    border-radius: 15px;
    border: 1px solid var(--color-border);
    padding: 25px;
    animation: fadeIn 0.8s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-15px); }
    to { opacity: 1; transform: translateY(0); }
}

header h1 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--color-text);
    text-shadow: 2px 2px 6px rgba(255, 255, 255, 0.2);
}

.input-section {
    width: 100%;
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.input-section input {
    flex: 1;
    padding: 12px;
    border: 1px solid var(--color-border);
    border-radius: 5px;
    background-color: var(--color-primary);
    color: var(--color-text);
    transition: border-color 0.3s ease;
}

.input-section input:focus {
    border-color: var(--color-accent);
    outline: none;
}

.todos-filter {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-bottom: 20px;
    color: var(--color-text-secondary);
}

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown .filter-button {
    background: var(--color-accent);
    color: var(--color-text);
    padding: 10px 16px;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.2s ease;
}

.dropdown .filter-button:hover {
    background: #ff6b81;
    transform: scale(1.05);
}

.dropdown-content {
    display: none;
    position: absolute;
    left: 0;
    top: 100%;
    background-color: var(--color-secondary);
    min-width: 140px;
    border-radius: 6px;
    box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.3);
    z-index: 1;
    padding: 5px 0;
}

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown-content li {
    padding: 12px;
    cursor: pointer;
    transition: background 0.3s ease;
    text-align: center;
    font-size: 14px;
    color: var(--color-text);
}

.dropdown-content li:hover {
    background: rgba(255, 255, 255, 0.1);
}

.todo-actions {
    display: flex;
    gap: 8px;
}

.todo-actions button {
    background-color: var(--color-accent);
    color: var(--color-text);
    padding: 10px 14px;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.todo-actions button:hover {
    background-color: #ff6b81;
    transform: scale(1.05);
}

.todo-actions button:active {
    transform: scale(0.95);
}