/* =======================================
   ToolHub TH - Global Styles
   Version 3.0
======================================= */

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

html{
    scroll-behavior:smooth;
}

body{
    font-family:'Kanit',sans-serif;
    background:#f4f7fb;
    color:#222;
    line-height:1.7;
}

img{
    display:block;
    max-width:100%;
    height:auto;
}

a{
    text-decoration:none;
    color:inherit;
}

ul{
    list-style:none;
}

::selection{
    background:#2563eb;
    color:#fff;
}

/* =======================================
   Navbar
======================================= */

.navbar{

    position:sticky;
    top:0;
    z-index:999;

    display:flex;
    justify-content:space-between;
    align-items:center;

    padding:18px 40px;

    background:rgba(255,255,255,.96);

    backdrop-filter:blur(10px);

    box-shadow:0 2px 10px rgba(0,0,0,.08);

}

.logo{

    display:flex;
    align-items:center;
    gap:14px;

}

.logo img{

    width:70px;

    height:50px;

    object-fit:contain;

}

.logo span{

    font-size:28px;

    font-weight:700;

    color:#2563eb;

}

.menu{

    display:flex;

    gap:24px;

    flex-wrap:wrap;

}

.menu a{

    font-weight:600;

    color:#333;

    transition:.25s;

}

.menu a:hover{

    color:#2563eb;

}

/* =======================================
   Navbar - Dropdown categories (เครื่องมือ / เกี่ยวกับ)
======================================= */

.menu{
    align-items:center;
}

.dropdown{
    position:relative;
}

.dropdown-toggle{
    display:inline-flex;
    align-items:center;
    gap:5px;
    background:none;
    border:none;
    padding:0;
    font-family:'Kanit',sans-serif;
    font-size:16px;
    font-weight:600;
    color:#333;
    cursor:pointer;
    transition:.25s;
}

.dropdown-toggle:hover,
.dropdown.open .dropdown-toggle{
    color:#2563eb;
}

.dropdown-toggle .caret{
    font-size:11px;
    transition:transform .2s ease;
}

.dropdown.open .dropdown-toggle .caret{
    transform:rotate(180deg);
}

.dropdown-panel{
    position:absolute;
    top:calc(100% + 16px);
    right:0;
    left:auto;
    background:#fff;
    border:1px solid #e5e7eb;
    border-radius:14px;
    box-shadow:0 16px 40px rgba(15,23,42,.12);
    padding:18px;
    display:none;
    z-index:1000;
    max-height:calc(100vh - 110px);
    overflow-y:auto;
    overscroll-behavior:contain;
    -webkit-overflow-scrolling:touch;
}

.dropdown.open .dropdown-panel{
    display:flex;
}

/* dropdown ธรรมดา (เกี่ยวกับ): รายการเดียวเรียงลง */

.dropdown-panel:not(.mega){
    flex-direction:column;
    min-width:200px;
    gap:2px;
}

.dropdown-panel:not(.mega) a{
    padding:9px 10px;
    border-radius:8px;
    font-weight:500;
    white-space:nowrap;
}

.dropdown-panel:not(.mega) a:hover{
    background:#eff6ff;
}

/* mega dropdown (เครื่องมือ): หลายคอลัมน์ตามหมวดหมู่ */

.dropdown-panel.mega{
    flex-direction:row;
    flex-wrap:wrap;
    gap:28px;
    right:0;
    left:auto;
    transform:none;
    max-width:calc(100vw - 40px);
    padding:24px;
}

.dropdown-col{
    min-width:170px;
    display:flex;
    flex-direction:column;
    gap:3px;
}

.dropdown-col h4{
    font-size:13px;
    color:#94a3b8;
    text-transform:uppercase;
    letter-spacing:.04em;
    margin-bottom:8px;
    font-weight:700;
}

.dropdown-col a{
    padding:6px 8px;
    margin:0 -8px;
    border-radius:8px;
    font-size:14.5px;
    font-weight:500;
    white-space:nowrap;
}

.dropdown-col a:hover{
    background:#eff6ff;
}

.dropdown-col-all{
    justify-content:flex-end;
    border-left:1px solid #f1f5f9;
    padding-left:24px;
    gap:10px;
}

.dropdown-view-all{
    font-weight:700 !important;
    color:#2563eb !important;
}

/* =======================================
   Hero
======================================= */

header{

    background:#2563eb;

    color:#fff;

    text-align:center;

    padding:60px 20px;

}

.hero-title h1{

    font-size:60px;

    margin-bottom:12px;

}

header p{

    font-size:18px;

    opacity:.95;

}

/* =======================================
   Search
======================================= */

#search{

    width:100%;

    max-width:750px;

    margin:30px auto 0;

    display:block;

    padding:18px 20px;

    border:none;

    border-radius:14px;

    font-size:18px;

    font-family:'Kanit',sans-serif;

    box-shadow:0 5px 15px rgba(0,0,0,.12);

}

/* =======================================
   Stats
======================================= */

.stats{

    max-width:1100px;

    margin:40px auto;

    display:grid;

    grid-template-columns:repeat(auto-fit,minmax(200px,1fr));

    gap:20px;

}

.stat{

    background:#fff;

    border-radius:16px;

    padding:28px;

    text-align:center;

    box-shadow:0 6px 18px rgba(0,0,0,.08);

    transition:.25s;

}

.stat:hover{

    transform:translateY(-6px);

    box-shadow:0 15px 30px rgba(0,0,0,.12);

}

.stat h2{

    color:#2563eb;

    font-size:36px;

    margin-bottom:8px;

}

.stat p{

    color:#666;

}

/* =======================================
   Main Layout
======================================= */

main{

    max-width:1200px;

    margin:0 auto;

    padding:40px 20px;

}

/* =======================================
   Grid Layout
======================================= */

.tools-grid{

    display:grid;

    grid-template-columns:repeat(auto-fit,minmax(300px,1fr));

    gap:24px;

}

.calculator-grid{

    display:grid;

    grid-template-columns:repeat(auto-fit,minmax(280px,1fr));

    gap:24px;

}

.blog-grid{

    display:grid;

    gap:24px;

}

/* =======================================
   Tool Card
======================================= */

.tool{

    position:relative;

    display:block;

    background:#fff;

    border-radius:18px;

    padding:28px;

    color:#222;

    overflow:hidden;

    text-decoration:none;

    box-shadow:0 6px 18px rgba(0,0,0,.08);

    transition:.25s ease;

}

.tool::before{

    content:"";

    position:absolute;

    left:0;

    top:0;

    width:6px;

    height:100%;

    background:#2563eb;

}

.tool:hover{

    transform:translateY(-6px);

    box-shadow:0 15px 35px rgba(0,0,0,.12);

}

.tool h2{

    margin-bottom:14px;

    font-size:28px;

    color:#222;

    transition:.25s;

}

.tool:hover h2{

    color:#2563eb;

}

.tool p{

    color:#666;

    line-height:1.8;

    margin-bottom:18px;

}

.tool .back{

    display:inline-block;

    margin-top:8px;

    font-weight:600;

    color:#2563eb;

}

.tool .back:hover{

    text-decoration:underline;

}

/* =======================================
   NEW Badge
======================================= */

.badge{

    display:inline-block;

    padding:5px 12px;

    border-radius:999px;

    background:#ef4444;

    color:#fff;

    font-size:12px;

    font-weight:700;

}

.badge-new{

    position:absolute;

    top:18px;

    right:18px;

    padding:6px 12px;

    border-radius:999px;

    background:linear-gradient(135deg,#ff9800,#ff5722);

    color:#fff;

    font-size:12px;

    font-weight:700;

    box-shadow:0 4px 12px rgba(255,87,34,.35);

    animation:pulse 1.5s infinite;

}

/* =======================================
   Cards inside Container
======================================= */

.container .tool{

    margin-bottom:20px;

}

/* =======================================
   Container
======================================= */

.container{

    max-width:1000px;

    margin:40px auto;

    padding:40px;

    background:#fff;

    border-radius:18px;

    box-shadow:0 8px 24px rgba(15,23,42,.08);

}

.container h1{

    margin-bottom:16px;

    text-align:center;

    color:#2563eb;

    font-size:40px;

}

.container h2{

    margin:30px 0 15px;

    color:#2563eb;

}

.container p{

    color:#555;

    line-height:1.9;

}

.container ul,
.container ol{

    padding-left:22px;

    margin:15px 0;

}

.container li{

    margin-bottom:10px;

    line-height:1.8;

}

/* =======================================
   Input
======================================= */

.container input,
.container textarea,
.container select{

    width:100%;

    margin-bottom:18px;

    padding:15px;

    border:1px solid #d1d5db;

    border-radius:10px;

    font-size:17px;

    font-family:'Kanit',sans-serif;

    transition:.25s;

}

.container input:focus,
.container textarea:focus,
.container select:focus{

    outline:none;

    border-color:#2563eb;

    box-shadow:0 0 0 4px rgba(37,99,235,.15);

}

.container textarea{

    resize:vertical;

    min-height:220px;

}

/* =======================================
   Button
======================================= */

.container button{

    width:100%;

    padding:15px;

    border:none;

    border-radius:10px;

    background:#2563eb;

    color:#fff;

    font-size:18px;

    font-family:'Kanit',sans-serif;

    cursor:pointer;

    transition:.25s;

}

.container button:hover{

    background:#1d4ed8;

    transform:translateY(-2px);

}

.container button:active{

    transform:scale(.98);

}

/* =======================================
   Result Box
======================================= */

.result{

    margin-top:25px;

    padding:25px;

    border-radius:16px;

    background:#f8fafc;

    border:1px solid #e5e7eb;

}

.result h2{

    margin-top:0;

}

.result h3{

    color:#2563eb;

    font-size:30px;

    margin:10px 0;

}

.result p{

    margin:10px 0;

}

/* =======================================
   Section
======================================= */

.section{

    max-width:1000px;

    margin:40px auto;

    padding:35px;

    background:#fff;

    border-radius:18px;

    box-shadow:0 8px 24px rgba(15,23,42,.08);

}

.section h2{

    margin-top:0;

    margin-bottom:18px;

    color:#2563eb;

}

.section h3{

    margin-top:25px;

    color:#222;

}

.section p{

    color:#555;

    line-height:1.9;

}

.section ul,
.section ol{

    padding-left:22px;

}

.section li{

    margin-bottom:10px;

}

/* =======================================
   Breadcrumb
======================================= */

.breadcrumb{

    max-width:1200px;

    margin:20px auto;

    padding:0 20px;

    font-size:15px;

    color:#6b7280;

}

.breadcrumb a{

    color:#2563eb;

    text-decoration:none;

    transition:.25s;

}

.breadcrumb a:hover{

    text-decoration:underline;

}

.breadcrumb span{

    margin:0 6px;

}

/* =======================================
   Table
======================================= */

.table-wrapper{

    overflow-x:auto;

}

table{

    width:100%;

    border-collapse:collapse;

    margin-top:20px;

}

th{

    background:#2563eb;

    color:#fff;

    padding:14px;

    text-align:center;

    font-weight:600;

}

td{

    padding:14px;

    border-bottom:1px solid #e5e7eb;

    text-align:center;

}

tbody tr:nth-child(even){

    background:#f8fafc;

}

tbody tr:hover{

    background:#eef4ff;

}

/* =======================================
   Back Button
======================================= */

.back{

    display:inline-block;

    margin-top:20px;

    color:#2563eb;

    font-weight:600;

    text-decoration:none;

    transition:.25s;

}

.back:hover{

    color:#1d4ed8;

    text-decoration:underline;

}

/* =======================================
   FAQ
======================================= */

.faq-item{

    margin-bottom:24px;

}

.faq-item h3{

    color:#1f2937;

    margin-bottom:10px;

}

.faq-item p{

    color:#4b5563;

}

/* =======================================
   Utility
======================================= */

.text-center{

    text-align:center;

}

.text-right{

    text-align:right;

}

.mt-20{

    margin-top:20px;

}

.mt-30{

    margin-top:30px;

}

.mb-20{

    margin-bottom:20px;

}

.mb-30{

    margin-bottom:30px;

}

.hidden{

    display:none;

}

hr{

    border:none;

    border-top:1px solid #e5e7eb;

    margin:30px 0;

}

/* =======================================
   Category Quick-jump Nav (tools.html)
======================================= */

.category-nav{

    display:flex;

    flex-wrap:wrap;

    gap:10px;

    margin-bottom:30px;

}

.category-nav a{

    padding:8px 16px;

    background:#eef4ff;

    color:#2563eb;

    border-radius:20px;

    font-size:14px;

    font-weight:600;

    text-decoration:none;

    transition:.2s;

}

.category-nav a:hover{

    background:#2563eb;

    color:#fff;

}

@media (max-width:480px){

    .category-nav a{

        font-size:13px;

        padding:7px 13px;

    }

}

/* =======================================
   Footer
======================================= */

footer{

    margin-top:60px;

    padding:45px 20px;

    background:#fff;

    border-top:1px solid #e5e7eb;

    text-align:center;

}

footer h3{

    color:#2563eb;

    font-size:26px;

    margin-bottom:10px;

}

footer p{

    margin:10px 0;

    color:#666;

    line-height:1.8;

}

footer a{

    color:#2563eb;

    text-decoration:none;

    transition:.25s;

}

footer a:hover{

    text-decoration:underline;

}

/* =======================================
   Focus
======================================= */

button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
a:focus-visible{

    outline:3px solid rgba(37,99,235,.25);

    outline-offset:3px;

}

/* =======================================
   Animation
======================================= */

@keyframes fadeUp{

    from{

        opacity:0;

        transform:translateY(18px);

    }

    to{

        opacity:1;

        transform:translateY(0);

    }

}

@keyframes pulse{

    0%{

        transform:scale(1);

    }

    50%{

        transform:scale(1.08);

    }

    100%{

        transform:scale(1);

    }

}

.fade-up{

    animation:fadeUp .45s ease;

}

/* =======================================
   Tablet
======================================= */

@media (max-width:992px){

    .navbar{

        padding:18px 20px;

    }

    .hero-title h1{

        font-size:48px;

    }

    main{

        padding:30px 18px;

    }

    .container{

        margin:30px 18px;

        padding:30px;

    }

    .section{

        margin:30px 18px;

        padding:30px;

    }

    .tools-grid,
    .calculator-grid{

        grid-template-columns:repeat(auto-fit,minmax(260px,1fr));

    }

}

/* =======================================
   Mobile
======================================= */

@media (max-width:768px){

    .navbar{

        flex-direction:column;

        align-items:center;

        gap:16px;

        padding:20px;

    }

    .logo{

        justify-content:center;

    }

    .logo img{

        width:60px;

        height:44px;

    }

    .logo span{

        font-size:24px;

    }

    .menu{

        flex-direction:column;
        width:100%;
        justify-content:center;
        gap:14px;

    }

    .menu > a,
    .menu > .dropdown{

        width:100%;
        text-align:center;

    }

    .menu a{

        font-size:15px;

    }

    .dropdown-toggle{

        width:100%;
        justify-content:center;

    }

    .dropdown-panel,
    .dropdown-panel.mega{

        position:static;
        transform:none;
        left:auto;
        top:auto;
        box-shadow:none;
        border-radius:10px;
        margin-top:10px;
        width:100%;
        max-width:100%;

    }

    .dropdown-panel.mega{

        flex-direction:column;
        flex-wrap:nowrap;
        gap:14px;

    }

    .dropdown-col-all{

        border-left:none;
        border-top:1px solid #f1f5f9;
        padding-left:0;
        padding-top:14px;
        align-items:center;

    }

    header{

        padding:50px 20px;

    }

    .hero-title h1{

        font-size:38px;

    }

    header p{

        font-size:16px;

    }

    #search{

        font-size:16px;

        padding:15px;

    }

    .stats{

        grid-template-columns:1fr;

    }

    .tools-grid,
    .calculator-grid,
    .blog-grid{

        grid-template-columns:1fr;

    }

    .tool{

        padding:22px;

    }

    .tool h2{

        font-size:24px;

    }

    .container{

        margin:20px 14px;

        padding:24px;

    }

    .container h1{

        font-size:32px;

    }

    .section{

        margin:20px 14px;

        padding:24px;

    }

    footer{

        padding:35px 16px;

    }

}

/* =======================================
   Small Mobile
======================================= */

@media (max-width:480px){

    .navbar{

        padding:16px;

    }

    .logo{

        gap:10px;

    }

    .logo img{

        width:52px;

        height:40px;

    }

    .logo span{

        font-size:20px;

    }

    .menu{

        gap:10px;

    }

    .menu a{

        font-size:14px;

    }

    .hero-title h1{

        font-size:30px;

    }

    header p{

        font-size:15px;

    }

    .container{

        padding:20px;

    }

    .container h1{

        font-size:28px;

    }

    .tool{

        padding:18px;

    }

    .tool h2{

        font-size:22px;

    }

    .result h3{

        font-size:24px;

    }

    th,
    td{

        padding:10px;

        font-size:14px;

    }

}

/* =======================================
   Utility Classes
======================================= */

.text-center{

    text-align:center;

}

.text-left{

    text-align:left;

}

.text-right{

    text-align:right;

}

.w-100{

    width:100%;

}

.d-flex{

    display:flex;

}

.flex-center{

    display:flex;

    justify-content:center;

    align-items:center;

}

.gap-10{

    gap:10px;

}

.gap-20{

    gap:20px;

}

.mt-10{

    margin-top:10px;

}

.mt-20{

    margin-top:20px;

}

.mt-30{

    margin-top:30px;

}

.mt-40{

    margin-top:40px;

}

.mb-10{

    margin-bottom:10px;

}

.mb-20{

    margin-bottom:20px;

}

.mb-30{

    margin-bottom:30px;

}

.mb-40{

    margin-bottom:40px;

}

.hidden{

    display:none !important;

}

/* =======================================
   Card
======================================= */

.card{

    background:#fff;

    border-radius:18px;

    padding:25px;

    box-shadow:0 6px 20px rgba(0,0,0,.08);

}

.card h2{

    margin-top:0;

    color:#2563eb;

}

.card p{

    color:#555;

}

/* =======================================
   Alert
======================================= */

.alert{

    padding:16px 20px;

    border-radius:12px;

    margin:20px 0;

}

.alert-info{

    background:#eff6ff;

    color:#1d4ed8;

    border-left:5px solid #2563eb;

}

.alert-success{

    background:#ecfdf5;

    color:#047857;

    border-left:5px solid #10b981;

}

.alert-warning{

    background:#fffbeb;

    color:#b45309;

    border-left:5px solid #f59e0b;

}

.alert-danger{

    background:#fef2f2;

    color:#b91c1c;

    border-left:5px solid #ef4444;

}

/* =======================================
   Code Block
======================================= */

pre{

    overflow-x:auto;

    background:#0f172a;

    color:#fff;

    padding:18px;

    border-radius:12px;

    margin:20px 0;

}

code{

    font-family:Consolas,Monaco,monospace;

    font-size:15px;

}

/* =======================================
   Link
======================================= */

a{

    transition:.25s;

}

a:hover{

    color:#2563eb;

}

/* =======================================
   Print
======================================= */

@media print{

    body{

        background:#fff;

        color:#000;

    }

    .navbar,
    .menu,
    footer,
    .badge,
    .badge-new{

        display:none !important;

    }

    .container,
    .section,
    .tool{

        box-shadow:none;

        border:1px solid #ddd;

    }

    a{

        color:#000;

        text-decoration:none;

    }

}

/* =======================================
   Dark Mode Ready
   (เปิดใช้งานภายหลังได้)
======================================= */

.dark{

    background:#0f172a;

    color:#f8fafc;

}

.dark .navbar,
.dark footer,
.dark .container,
.dark .section,
.dark .tool,
.dark .card{

    background:#1e293b;

    color:#f8fafc;

}

.dark .tool h2,
.dark .container h1,
.dark .section h2,
.dark footer h3{

    color:#60a5fa;

}

.dark p,
.dark li{

    color:#d1d5db;

}

.dark input,
.dark textarea,
.dark select{

    background:#334155;

    color:#fff;

    border-color:#475569;

}

.dark table{

    color:#fff;

}

.dark th{

    background:#2563eb;

}

.dark td{

    border-color:#334155;

}

/* =======================================
   Performance
======================================= */

.tool,
.card,
.stat,
.container,
.section{

    will-change:transform;

}

button,
a{

    -webkit-tap-highlight-color:transparent;

}

/* =======================================
   Accessibility
======================================= */

[hidden]{

    display:none !important;

}

button{

    font-family:'Kanit',sans-serif;

}

input,
textarea,
select{

    font-family:'Kanit',sans-serif;

}

.no-result{

    display:none;

    text-align:center;

    margin:40px auto;

    padding:20px;

    max-width:500px;

    background:#fff;

    border:1px solid #e5e7eb;

    border-radius:12px;

    color:#666;

    font-size:18px;

    box-shadow:0 4px 12px rgba(15,23,42,.08);

}

.article-container{

max-width:900px;

margin:auto;

padding:40px 20px;

}

.article-container article{

background:#fff;

padding:40px;

border-radius:16px;

box-shadow:0 8px 25px rgba(0,0,0,.08);

}

.article-table{

width:100%;

border-collapse:collapse;

margin:25px 0;

}

.article-table th{

background:#2563eb;

color:#fff;

padding:14px;

}

.article-table td{

padding:14px;

border:1px solid #ddd;

}

.article-table tr:nth-child(even){

background:#f8fafc;

}

.info-box{

background:#eef5ff;

padding:20px;

margin:20px 0;

border-left:5px solid #2563eb;

border-radius:10px;

}

.formula-box{

background:#f4f7fb;

padding:18px;

border-radius:10px;

text-align:center;

font-weight:700;

margin:20px 0;

}

.cta-box{

background:#2563eb;

color:#fff;

padding:35px;

text-align:center;

border-radius:15px;

margin-top:30px;

}

.btn-primary{

display:inline-block;

margin-top:20px;

padding:14px 30px;

background:#fff;

color:#2563eb;

font-weight:700;

border-radius:10px;

text-decoration:none;

transition:.3s;

}

.btn-primary:hover{

transform:translateY(-2px);

}

.related-grid{

display:grid;

grid-template-columns:

repeat(auto-fit,minmax(240px,1fr));

gap:20px;

margin-top:30px;

}

.related-card{

display:block;

padding:22px;

background:#fff;

border-radius:12px;

box-shadow:0 5px 15px rgba(0,0,0,.08);

text-decoration:none;

color:#222;

transition:.3s;

}

.related-card:hover{

transform:translateY(-5px);

}

.back-to-top{

position:fixed;

right:25px;

bottom:25px;

padding:12px 16px;

background:#2563eb;

color:#fff;

border-radius:10px;

text-decoration:none;

opacity:0;

pointer-events:none;

transition:.3s;

}

.back-to-top.show{

opacity:1;

pointer-events:auto;

}

@media(max-width:768px){

.article-container article{

padding:25px;

}

}

/* =======================================
   End of File
======================================= */