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

:root {
    --bg-color: white;
    --bg-color1: #F0EDED;
    --bg-color2: #DCFFEC;
    --bg-color3: #1EA8A4;
}

body {
    text-align: center;
    background-color: var(--bg-color);
    min-height: 100vh; 
    display: flex;
    align-items: stretch;
}

.container {
    width: 100%;
    max-width: 350px;
    min-height: 100vh;
    margin-left: auto;
    margin-right: auto;
    background-color: var(--bg-color1);
    border-radius: 50px;
    padding-top: 30px;
    padding-bottom: 30px;
}

header {
    display: block;
    margin: 0px auto 0 auto;
    width: 100%;
    padding: 0 20px;
}

h1 {
    padding: 12px;
    font-size: 16px;
    background-color: var(--bg-color);
    text-align: justify;
    border-radius: 10px;
    font-family: "Inter";
    margin: 0 auto;
    max-width: 250px;
    font-weight: 600;
}

.addBtn-container {
    display: flex;
    gap: 10px;
    position: relative;
    width: 90%;
    max-width: 290px;
    margin: 5px auto 25px auto;
    align-items: center;
}

.addBtn-container {
    display: block;
    position: relative;
    width: 200px;
    margin: 5px auto 25px auto;
}

input {
    display: block;
    width: 100%;
    border: none;
    outline: none;
    padding: 12px 60px 12px 12px;
    border-radius: 17px;
    background-color: var(--bg-color);
    font-size: 15px;
    text-align: left;
}

#input-box {
    width: 100%;
}

button {
    position: absolute;
    right: 0px;
    top: 50%;
    transform: translateY(-50%);
    background-color: var(--bg-color3);
    padding: 12px;
    border-radius: 17px;
    color: white;
    border-style: none;
    width: 65px;
    cursor: pointer;
    z-index: 3;
}

.warning-message {
    background-color: #fee2e2;
    border: 2px solid #ef4444;
    border-radius: 10px;
    padding: 12px;
    margin: 10px 20px;
    text-align: center;
    animation: shake 0.3s;
}

.warning-message p {
    color: #ef4444;
    font-weight: 500;
    margin: 0;
    padding: 0;
    width: 100%;
    background: transparent;
}

.warning-message.hidden {
    display: none;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-5px);
    }

    75% {
        transform: translateX(5px);
    }
}

ul li {
    list-style: none;
    padding: 12px 8px 12px 40px;
    margin: 0 20px 10px 20px;
    background-color: white;
    border-radius: 10px;
    cursor: pointer;
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.2s;
}

ul li::before {
    content: '';
    position: absolute;
    height: 20px;
    width: 20px;
    background-image: url('../assets/Unselected.png');
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    left: 8px;
    top: 50%;
    transform: translateY(-50%);
}

ul li.checked {
    text-decoration: line-through;
    color: #999;
    background-color: #f9f9f9;
}

ul li.checked::before {
    background-image: url('../assets/Check.png');
    height: 30px;
    width: 30px;
}

ul li.checked .span-text {
    color: #999;
}

.span-text {
    flex: 1;
    margin-left: 5px;
    font-size: 16px;
    text-align: left;
    word-spacing: 5px;
}

.span-icons {
    display: flex;
    gap: 15px;
    align-items: center;
}

.edit-icon,
.delete-icon {
    width: 20px;
    height: 20px;
    cursor: pointer;
    transition: opacity 0.2s;
}

.edit-icon:hover,
.delete-icon:hover {
    opacity: 0.6;
}

.edit-input {
    flex: 1;
    border: 2px solid var(--bg-color3);
    outline: none;
    padding: 8px;
    border-radius: 8px;
    font-size: 16px;
    background-color: #fff;
    margin-left: 10px;
}

.edit-input:focus {
    border-color: var(--bg-color3);
    box-shadow: 0 0 5px rgba(30, 168, 164, 0.3);
}

.item-counter {
    background-color: transparent;
    padding: 4px 12px;
    width: auto;
    text-align: center;
    border-radius: 0;
    font-size: 14px;
    color: #666;
    margin-top: 5px;
    margin-bottom: 0;
    font-family: "Inter";
    font-weight: 600;
    line-height: 1.3;
}

.budget-section {
    background-color: var(--bg-color2);
    padding: 12px 20px;
    margin: 15px auto;
    max-width: 250px;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    gap: 5px;
    font-family: "Inter";
    font-size: 14px;
    font-weight: 600;
}

.budget-section.hidden {
    display: none;
}

.budget-item,
.estimated-item {
    display: flex;
    align-items: center;
}

.remaining-item {
    display: flex;
    align-items: center;
    gap: 0;
}

.remaining-item span {
    white-space: nowrap;
}

#remaining-amount {
    color: #333;
}

.editable-budget {
    background-color: var(--bg-color2);
    border: none;
    outline: none;
    cursor: pointer;
    min-width: 50px;
    padding: 2px 4px;
    border-radius: 4px;
    transition: background-color 0.2s;
    color: #333;
}

.editable-budget:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

.editable-budget:focus {
    background-color: rgba(255, 255, 255, 0.5);
    cursor: text;
}

.editable-budget:empty:before {
    content: attr(data-placeholder);
    color: #999;
}

#estimated-total {
    color: #333;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background-color: white;
    padding: 25px;
    border-radius: 20px;
    width: 90%;
    max-width: 320px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.modal-content h3 {
    margin: 0 0 20px 0;
    font-size: 18px;
    font-family: "Inter";
    font-weight: 600;
    text-align: center;
    color: #333;
}

.modal-input-group {
    margin-bottom: 15px;
}

.modal-input-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 14px;
    font-family: "Inter";
    font-weight: 500;
    color: #555;
}

.modal-input-group input {
    width: 100%;
    padding: 10px;
    border: 2px solid #ddd;
    border-radius: 10px;
    font-size: 15px;
    font-family: "Inter";
    outline: none;
    transition: border-color 0.2s;
}

.modal-input-group input:focus {
    border-color: var(--bg-color3);
}

.modal-buttons {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.cancel-btn,
.confirm-btn {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 12px;
    font-size: 15px;
    font-family: "Inter";
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

.cancel-btn {
    background-color: #f0f0f0;
    color: #666;
}

.cancel-btn:hover {
    opacity: 0.8;
}

.confirm-btn {
    background-color: var(--bg-color3);
    color: white;
}

.confirm-btn:hover {
    opacity: 0.9;
}

@media (max-width: 768px) {
    .container {
        max-width: 90%;
        min-height: 100vh;
        padding: 15px;
        border-radius: 30px;
    }

    header {
        max-width: 90%;
    }

    h1 {
        font-size: 18px;
    }

    .addBtn-container {
        max-width: 90%;
    }

    ul li {
        margin-left: 10px;
        margin-right: 10px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 0;
    }

    .container {
        max-width: 100%;
        min-height: 100vh;
        border-radius: 20px;
        padding: 10px;
    }

    header {
        margin-top: 20px;
        max-width: 90%;
    }

    h1 {
        font-size: 16px;
        padding: 10px;
    }

    .empty-p {
        margin: 10px;
    }

    p {
        width: 90%;
        padding: 10px;
        font-size: 14px;
    }

    .addBtn-container {
        max-width: 90%;
        padding-left: 10px;
        padding-right: 10px;
        margin-bottom: 20px;
    }

    input {
        padding: 10px 70px 10px 10px;
        font-size: 14px;
    }

    button {
        right: 12px;
        width: 60px;
        padding: 10px;
        font-size: 14px;
    }

    ul li {
        padding: 10px 5px 10px 28px;
        margin-left: 5px;
        margin-right: 5px;
        margin-bottom: 8px;
    }

    ul li::before {
        height: 18px;
        width: 18px;
        left: 5px;
    }

    .span-text {
        font-size: 14px;
        margin-left: 8px;
    }

    .span-icons {
        gap: 10px;
    }

    .edit-icon, .delete-icon {
        width: 18px;
        height: 18px;
    }

    .edit-input {
        font-size: 14px;
        padding: 6px;
        margin-left: 8px;
    }

    .warning-message {
        margin: 10px 10px;
        padding: 10px;
    }

    .warning-message p {
        font-size: 14px;
    }
}

@media (max-width: 360px) {
    .container {
        border-radius: 20px;
    }

    h1 {
        font-size: 14px;
    }

    input {
        font-size: 13px;
    }

    button {
        width: 55px;
        font-size: 13px;
    }

    .span-text {
        font-size: 13px;
    }

    .edit-icon, .delete-icon {
        width: 16px;
        height: 16px;
    }
}