:root {
    --primary-color: #37966F;
    --secondary-color: #B9E4C9;
    --bg-color: #FFFBE6;
    --bg-default-color: #E5E5E5;
    --text-color: #356859;
    --err-color: #FD5523;

    --note-bg-orange: #f5d2b4;
    --note-bg-blue: #c7e3ef;
    --note-bg-pink: #f7bebb;
    --note-bg-yellow: #f7f0b0;
    --note-bg-salad: #ddf3b0;
    --note-bg-green: #b4f1c3;

    --note-bg: var(--note-bg-orange);

    --shadow: 2px 2px 4px rgba(0, 0, 0, 0.25);
}

html {
    font-size: 62.5%; /* 1rem = 10px*/
    font-family: Arial, Helvetica, sans-serif;
}

.body {
    margin: 0;
    font-size: 1.8rem;
    color: var(--text-color);
    background-color: var(--bg-default-color);
    min-width: 320px;
}

/* header */
.header {
    margin: 0 auto;
    display: flex;
    align-items: center;
    box-sizing: border-box;
    height: 8rem;
    max-width: 102.4rem;
    padding-left: 12rem;
    background-color: var(--secondary-color);
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    z-index: 10;
}
.header__title {
    font-size: 4.8rem;
    font-weight: 600;
    margin: 0;
    color: var(--text-color);
}
.header__button {
    position: absolute;
    left: 50%;
    top: 32%;
    transform: translateX(-50%);
}

.button {
    font-family: inherit;
    font-style: italic;
    text-align: center;
    background-color: var(--primary-color);
    color: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-sizing: border-box;
    width: 2.5rem;
    height: 2.5rem;
    margin: 0;
    padding: 0;
    border: none;
    border-radius: 50%;
    box-shadow: var(--shadow);
}

.button:active {
    box-shadow: none;
}

.add-button {
    width: 8rem;
    height: 8rem;
    font-size: 7.2rem;
    line-height: 8rem;
    font-weight: 600;
}

/* main */
.main {
    background-color: var(--bg-color);
    margin: 0 auto;
    min-height: calc(100vh - 8rem);
    max-width: 102.4rem;
    box-sizing: border-box;
    padding: 4rem 2rem 2rem;
}

/* notes */
.notes {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

/* note */
.note {
    display: block;
    box-sizing: border-box;
    width: calc((100% - 2rem)/2);
    border-radius: 0.8rem;
    margin-bottom: 2rem;
    min-height: 6.7rem;
    position: relative;
    outline: none;
}
.note__text {
    margin: 0;
    width: 100%;
    box-sizing: border-box;
    border-radius: 0.8rem;
    padding: 2.8rem 1.8rem 1.8rem;
    background-color: var(--note-bg);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.note:focus {
    z-index: 1;
}
.note:focus .note__text {
    max-height: auto;
    white-space: initial;
    position: absolute;
    top: 0;
    left: 0;
    border: 1px solid var(--bg-color);
}

/* buttons */
.buttons {
    display: none;
    z-index: 2;
    position: absolute;
    right: 0.5rem;
    top: -0.8rem;
}
.buttons__button,
.editor__button {
    margin-left: 0.5rem;
}
.edit-button:hover,
.ok-button:hover,
.remove-button:hover,
.cancel-button:hover,
.add-button:hover {
    border: 1px solid var(--bg-color);
 }
.remove-button,
.cancel-button {
    background-color: var(--err-color);
}
.color-button {
    background-color: var(--secondary-color);
    color: var(--text-color);
}
.color-button:hover {
    border: 1px solid var(--primary-color);
}
.note:focus .buttons,
.note:focus-within .buttons,
.note:hover .buttons {
    display: flex;
}

.color-buttons {
    display: flex;
    z-index: 3;
    position: absolute;
    right: -0.5rem;
    top: -0.1rem;
    padding: 0.3rem;
    border-radius: 0.8rem;
    background-color: var(--bg-color);
    box-shadow: var(--shadow);
}
.note .color-buttons {
    top: -0.9rem;
}
.col-button {
    margin-left: 0.5rem;
    box-shadow: none;
}
.col-button:hover {
    border: 1px solid var(--primary-color);
}
.col-button:first-child {
    margin-left: 0;
}
.col-button_bg_orange {
    background-color: var(--note-bg-orange);
}
.col-button_bg_blue {
    background-color: var(--note-bg-blue);
}
.col-button_bg_pink {
    background-color: var(--note-bg-pink);
}
.col-button_bg_yellow {
    background-color: var(--note-bg-yellow);
}
.col-button_bg_salad {
    background-color: var(--note-bg-salad);
}
.col-button_bg_green {
    background-color: var(--note-bg-green);
}

/* editor */
.editor {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 20;
    background-color: rgba(155,155,155, 0.7);
    display: flex;
    align-items: center;
}
.editor__content {
    margin: 0 auto;
    width: 100%;
    max-width: 40rem;
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
    padding: 2rem;
    background-color: var(--note-bg);
    box-shadow: var(--shadow);
    border-radius: 0.8rem;
}
.editor__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}
.editor__title {
    font-size: 3.6rem;
    margin: 0;
}
.editor__buttons {
    display: flex;
    position: relative;
}
.editor__input {
    display: block;
    box-sizing: border-box;
    max-width: 100%;
    min-width: 100%;
    padding: 1rem;
    background-color: var(--bg-color);
    font-family: inherit;
    font-size: inherit;
    color: var(--text-color);
}

.js-hidden {
    display: none;
}

/* media */
@media screen and (max-width: 1023px) {
    .button {
        width: 4rem;
        height: 4rem;
    }

    .add-button {
        font-size: 6.3rem;
        line-height: 7rem;
        width: 7rem;
        height: 7rem;
    }
}

@media screen and (max-width: 767px) {
    .header {
        padding-left: 5rem;
    }

    .header__button {
        left: 80%;
    }

    .main {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .note {
        width: 100%;
        margin-bottom: 1.5rem;
    }

    .editor__title {
        font-size: 3rem;
    }
}