:root {
    --bg-color: #fdfbf7;
    --text-color: #4a4a4a;
    --accent-color: #a7c7e7;
    --accent-dark: #8bb6db;
    --card-bg: #ffffff;
    --border-color: #e0ddd5;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    --font-main: 'Inter', sans-serif;
    --font-heading: 'Playfair Display', serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    line-height: 1.6;
    display: flex;
    justify-content: center;
    padding: 40px 20px;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 600px;
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

header {
    text-align: center;
    margin-bottom: 40px;
}

h1 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.subtitle {
    font-weight: 300;
    font-style: italic;
    color: #777;
}

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

.input-group {
    display: flex;
    gap: 10px;
    background: var(--card-bg);
    padding: 8px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: border-color 0.3s ease;
}

.input-group:focus-within {
    border-color: var(--accent-color);
}

input {
    flex: 1;
    border: none;
    outline: none;
    padding: 12px 15px;
    font-family: var(--font-main);
    font-size: 1rem;
    background: transparent;
}

button {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease;
    font-family: var(--font-main);
}

button:hover {
    background-color: var(--accent-dark);
}

button:active {
    transform: scale(0.97);
}

.list-section {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

ul {
    list-style: none;
}

li {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: slideIn 0.4s ease-out forwards;
    margin-bottom: 15px;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-10px); }
    to { opacity: 1; transform: translateX(0); }
}

.entry-text {
    font-size: 1.1rem;
    color: var(--text-color);
}

.delete-btn {
    background: none;
    color: #ccc;
    padding: 5px 10px;
    font-size: 0.8rem;
    border: 1px solid #eee;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.delete-btn:hover {
    background-color: #fff0f0;
    color: #ff8a8a;
    border-color: #ffcccc;
}

.empty-state {
    text-align: center;
    margin-top: 40px;
    font-weight: 300;
    color: #aaa;
    font-style: italic;
}

.hidden {
    display: none;
}