:root {
    /* rgb(255, 159, 67)
  rgb(238, 82, 83)
  rgb(16, 172, 132)
  rgb(125, 95, 255)
  rgb(34, 97, 227)
rgba(34, 124, 245, 1)
rgba(114, 124, 245, 1)
  */
    --theme-r: 114;
    --theme-g: 124;
    --theme-b: 245;
    --theme-color: rgba(var(--theme-r), var(--theme-g), var(--theme-b), 1);
    --theme-hover-color: rgba(var(--theme-r), var(--theme-g), var(--theme-b), 0.9);
    --theme-bg-color: rgba(var(--theme-r), var(--theme-g), var(--theme-b), 0.1);
    --theme-border-color: rgba(var(--theme-r), var(--theme-g), var(--theme-b), 0.5);
    --theme-shadow-color: rgba(var(--theme-r), var(--theme-g), var(--theme-b), 0.25);
    --card-header-color: rgba(12, 166, 120, 1);
    --result-bg-color: rgba(12, 166, 120, 0.1);
    --result-border-color: rgba(12, 166, 120, 0.5);
    --border-color: #CED4DA;
    --body-bg-color: #f1f5f9;
    --dark-text-color: #34495E;
    /* #282f3a */
    --light-text-color: #445566;
    --box-shadow: rgba(0, 0, 0, 0.16) 0px 1px 4px;
    --setting-color: rgba(0, 184, 148, 1);
    --setting-hover-color: rgba(0, 184, 148, 0.9);
    --red-color: rgba(239, 1, 7, 1);
    --red-hover-color: rgba(239, 1, 7, 0.9);
    --gap-x: 0rem;
    --padding-pc: 2rem;
    --padding-tab: 1.5rem;
    --padding-mob: 1rem;
}

/* === CSS RESET & BASE STYLES === */

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none;
}

html {
    scroll-behavior: smooth;
    -webkit-tap-highlight-color: transparent;
}

body {
    color: var(--dark-text-color, #222);
    overflow-x: hidden;
    height: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    font-feature-settings: "liga" off;
    touch-action: manipulation;
    background: var(--body-bg-color);
}

body,
select,
input,
textarea,
button,
code {
    font-family: 'Overpass', sans-serif;
}

header {
    background: #fff;
    padding: 0 40px;
    height: 56px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
}

a {
    color: var(--theme-color);
    word-break: break-word;
    overflow-wrap: break-word;
    word-wrap: break-word;
}

h1 {
    font-size: 24px;
    font-weight: 700;
}

h2 {
    font-size: 22px;
    font-weight: 700;
}

h3 {
    font-size: 18px;
    font-weight: 700;
}

h4 {
    font-size: 16px;
    font-weight: 700;
    margin-top: 8px;
}

p {
    font-size: 16px;
    margin-top: 8px;
    color: var(--light-text-color);
    line-height: 26px;
}

label {
    font-size: 16px;
    font-weight: 500;
}

input {
    height: 48px;
    width: 100%;
    background-color: #fff;
    outline: none;
    background-clip: border-box;
    border: 1px solid var(--border-color);
    padding-left: 8px;
    color: var(--light-text-color);
    font-weight: 500;
    font-size: 16px;
    border-radius: 4px;
    transition: border-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

input:-webkit-autofill {
    box-shadow: 0 0 0 1000px #fff inset !important;
    -webkit-box-shadow: 0 0 0 1000px #fff inset !important;
    -webkit-text-fill-color: var(--body-text-color) !important;
    transition: background-color 5000s ease-in-out 0s;
}

input::placeholder {
    color: #aaa;
}

textarea {
    min-height: 56px;
    outline: none;
    border: 1px solid var(--border-color);
    padding: 8px;
    font-size: 16px;
    font-weight: 500;
    color: var(--light-text-color);
}

button {
    border: none;
    color: #fff;
    min-height: 48px;
    padding: 0 12px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 18px;
    cursor: pointer;
    word-break: break-word;
    overflow-wrap: anywhere;
}

button img {
    height: 22px;
    width: 22px;
    vertical-align: middle;
}

select {
    height: 36px;
    background-color: #fff;
    border: 1px solid var(--border-color);
    font-size: 15px;
    font-weight: 500;
    color: var(--light-text-color);
    display: inline-block;
    outline: none;
    cursor: pointer;
    border-radius: 4px;
    word-wrap: normal;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3E%3C/svg%3E");
    background-position: right;
    background-repeat: no-repeat;
    background-size: 24px;
    padding-left: 8px;
    transition: all ease 200ms;
}


select.hide-icon {
    background: #fff;
    padding-left: 10px;
}

footer {
    background: #fff;
    padding: 0 40px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    gap: 16px;
}

footer .info-links:hover {
    text-decoration: underline;
}

/* css */
.line-40 {
    line-height: 40px;
}

.logo {
    background: #fff;
    color: var(--theme-color);
    font-size: 20px;
    font-weight: 700;
}

.logo span {
    color: var(--light-text-color);
}

.lang-options {
    height: 40px;
    list-style-type: none;
    display: flex;
    flex-direction: column;
    align-items: end;
}

.lang-options:hover {
    border-color: var(--theme-color);
}

.lang-options li {
    visibility: hidden;
    position: relative;
    z-index: 1;
    background-color: #fff;
    box-shadow: var(--box-shadow);
    width: 100%;
    padding: 0 12px;
}

.lang-options:hover li {
    visibility: visible;
    transition: all 200ms;
    border-color: var(--theme-color);
}

.lang-options li:first-of-type {
    visibility: visible;
    border: 1px solid var(--border-color);
    border-radius: 2px;
    box-shadow: none;
    max-width: fit-content;
    text-align: end;
}

.lang-options:hover li:first-of-type {
    border-color: var(--theme-color);
    max-width: none;
}

.lang-options li:last-of-type {
    border-radius: 0 0 2px 2px;
}

.lang-options li a {
    font-size: 18px;
    line-height: 40px;
    display: block;
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--light-text-color);
    font-weight: 500;
}

.lang-options li:hover a {
    color: var(--theme-color);
}

.lang-options li:first-of-type a {
    color: var(--light-text-color);
    font-weight: 600;
}

.lang-options:hover li:first-of-type a {
    color: var(--theme-color);
}


.border-theme {
    border-color: #227CF5 !important;
}

.bg-darkgrey {
    background: #e5e5e5 !important;
    transition: all ease 200ms;
}

.bg-darkgrey:hover {
    background: #d5d5d5 !important;
}

.bg-grey {
    background: #F3F4F6 !important;
    transition: all ease 200ms;
}

.bg-grey.bg-hover:hover {
    background: #e5e5e5 !important;
}

.bg-theme {
    background: var(--theme-color) !important;
    transition: all ease 200ms;
}

.bg-theme.bg-hover:hover {
    background: var(--theme-hover-color) !important;
}

.bg-setting {
    background: var(--setting-color) !important;
    transition: all ease 200ms;
}

.bg-setting.bg-hover:hover {
    background: var(--setting-hover-color) !important;
}

.bg-red {
    background: var(--red-color) !important;
    transition: all ease 200ms;
}

.bg-red.bg-hover:hover {
    background: var(--red-hover-color) !important;
}

.bg-white {
    background: #fff !important;
}

.bg-white.bg-hover:hover {
    background: #f5f5f5 !important;
}

.bg-tool {
    background-color: #dee8ff !important;
    background-image: url(https://assets.webinfcdn.net/redesign/assets/img/bg.png);
    background-blend-mode: multiply;
    background-size: cover;
    overflow: hidden;
}

.text-white {
    color: #fff !important;
}

.text-dark {
    color: var(--dark-text-color) !important;
}

.text-light {
    color: var(--light-text-color) !important;
}

.text-grey {
    color: #888888 !important;
}

.text-theme {
    color: var(--theme-color) !important;
}

.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 24px 0;
}

.tool-wrapper {
    min-height: 400px;
    padding: 32px 0 64px 0;
}

.tool-title {
    text-align: center;
    margin-bottom: 8px;
}

.tool-desc {
    text-align: center;
    font-size: 18px;
    font-weight: 500;
    color: var(--light-text-color);
}

.tool-content h2:not(:first-of-type) {
    margin-top: 20px;
}

.tool-content h3 {
    margin-top: 20px;
}

.tool-content h4 {
    margin-top: 16px;
}

.tool-content code {
    display: inline-block;
    background-color: #F3F4F6;
    padding: 2px 6px;
    border-radius: 2px;
    letter-spacing: 1.2px;
}

.tool-content ul {
    padding-left: 24px;
    margin-top: 12px;
}

.tool-content ul li:not(:first-of-type) {
    margin-top: 8px;
    line-height: 26px;
}

.card {
    background: #fff;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    max-height: max-content;

}

.card-header {
    background-color: var(--card-header-color);
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    text-align: center;
    padding: 16px;
    border-radius: 4px 4px 0 0;
    border-bottom: 1px solid var(--border-color);
}

.card-body {
    border-radius: 0 0 4px 4px;
    padding: 16px;
}

.result {
    background-color: var(--result-bg-color);
    border-radius: 4px;
    padding: 16px;
    font-weight: 600;
    border: 1px solid var(--result-border-color);
    max-height: fit-content;
}

i {
    font-size: 22px;
    vertical-align: middle;
}

.select-group {
    position: relative;
}

.select {
    padding: 8px;
    text-align: center;
    cursor: pointer;
    color: var(--light-text-color);
    min-width: 40px;
}

.options {
    background-color: #fff;
    min-width: 60px;
    text-align: center;
    border-radius: 4px;
    left: 0;
    top: 40px;
    position: absolute;
    z-index: 1;
    box-shadow: var(--box-shadow);
    max-height: 250px;
    overflow: auto;
    display: none;
}

.options .option {
    color: var(--light-text-color);
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
}

.options .option:hover {
    background-color: #e5e5e5;
}

.options .option:last-child {
    border: none;
}

.focus {
    transition: border-color .15s ease-in-out, box-shadow .15s ease-in-out;
}

.focus:focus {
    color: var(--dark-text-color);
    background-color: var(--bs-body-bg, #fff);
    border-color: var(--theme-border-color);
    outline: 0;
    box-shadow: 0 0 0 0.25rem var(--theme-shadow-color);
}

.focus:focus-within {
    color: var(--dark-text-color);
    background-color: var(--bs-body-bg, #fff);
    border-color: var(--theme-border-color);
    outline: 0;
    box-shadow: 0 0 0 0.25rem var(--theme-shadow-color);
}

.cursor {
    cursor: pointer;
}

.shadow {
    box-shadow: rgba(0, 0, 0, 0.1) 0px 10px 50px;
}

/* seo-content css */
.seo-content {
    background-color: #fff;
    padding: 24px;
    border-radius: 4px;
}

.seo-content h1 {
    margin-bottom: 16px;
    text-align: center;
}

.seo-content h2,
.seo-content h3 {
    margin-top: 20px;
    margin-bottom: 8px;
}

.seo-content ul {
    margin: 16px 0 16px 40px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* feedback css */
.feedback {
    position: fixed;
    z-index: 999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.feedback.show {
    opacity: 1;
    visibility: visible;
}

/* feedback content */
.feedback-content,
.thanks-content {
    background-color: #fff;
    padding: 20px;
    border-radius: 4px;
    width: 90%;
    max-width: 400px;
    position: relative;
    transform: translateY(-50px);
    transition: transform 0.3s ease;
}

.feedback.show .feedback-content {
    transform: translateY(0);
}

/* feedback css */
.feedback-btn {
    background: #fff;
    color: var(--theme-color);
    border: 1px solid var(--theme-border-color);
}

@media (min-width: 577px) and (max-width: 992px) {
    .container {
        max-width: 960px !important;
        width: calc(100% - 64px);
    }
}

@media (max-width: 576px) {
    header {
        padding: 0 16px;
    }

    .container {
        max-width: 768px !important;
        width: calc(100% - 20px);
        padding: 16px 0;
    }

    .seo-content {
        padding: 16px;
    }

    .seo-content ul {
        margin-left: 24px;
    }
}