/*
Theme Name: PhranakornSoft 2027 (AI SEO Block Theme)
Theme URI: https://www.phranakornsoft.com
Author: PhranakornSoft Co., Ltd.
Author URI: https://www.phranakornsoft.com
Description: Native WordPress Full Site Editing (FSE) Block Theme engineered for PhranakornSoft 2027. Built for 95-100 Core Web Vitals, Schema.org @graph Entity SEO, Google AI Overview (GEO), and AI Search Suggest.
Version: 2.0.0
Requires at least: 6.4
Tested up to: 6.7
Requires PHP: 8.1
Text Domain: phranakornsoft-2027
*/

/* Base CSS & Reset */
*, ::before, ::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--wp--preset--font-family--prompt), sans-serif;
    color: var(--wp--preset--color--dark-slate);
    background-color: var(--wp--preset--color--white);
    overflow-x: hidden;
    line-height: 1.65;
}

a {
    transition: color 0.25s ease, background-color 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
    text-decoration: none;
}

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

/* ==========================================================================
   Sticky Header & Navigation (Zero Elementor Dependency)
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
}

.site-header.is-scrolled {
    box-shadow: 0 12px 32px -12px rgba(15, 23, 42, 0.08);
    background: rgba(255, 255, 255, 0.98);
}

.pnks-header-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0.9rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.pnks-logo-link {
    display: inline-flex;
    align-items: center;
}

.pnks-logo-img {
    height: 36px;
    width: auto;
    display: block;
}

.pnks-nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 1.75rem;
}

.pnks-nav-item {
    position: relative;
}

.pnks-nav-link {
    color: #0f172a;
    font-weight: 500;
    font-size: 0.98rem;
    padding: 0.5rem 0;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.pnks-nav-link:hover {
    color: #0131b6;
}

/* Dropdown Menu */
.pnks-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 280px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    box-shadow: 0 20px 40px -15px rgba(15, 23, 42, 0.14);
    padding: 0.75rem;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.22s ease;
    z-index: 100;
}

.pnks-nav-item:hover .pnks-dropdown,
.pnks-nav-item:focus-within .pnks-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.pnks-dropdown li a {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.6rem 0.85rem;
    border-radius: 8px;
    color: #1e293b;
    font-size: 0.92rem;
    font-weight: 500;
}

.pnks-dropdown li a:hover {
    background: #f1f5f9;
    color: #0131b6;
}

.pnks-header-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #0131b6 0%, #1d4ed8 100%);
    color: #ffffff !important;
    font-weight: 600;
    font-size: 0.92rem;
    padding: 0.65rem 1.35rem;
    border-radius: 50px;
    box-shadow: 0 8px 20px -6px rgba(1, 49, 182, 0.35);
}

.pnks-header-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px -6px rgba(1, 49, 182, 0.45);
}

.pnks-mobile-toggle {
    display: none;
    background: none;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 0.45rem 0.7rem;
    font-size: 1.1rem;
    color: #0f172a;
    cursor: pointer;
}

@media (max-width: 991px) {
    .pnks-mobile-toggle {
        display: inline-flex;
    }
    .pnks-nav-wrapper {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 1px solid #e2e8f0;
        padding: 1rem 1.5rem;
        box-shadow: 0 15px 30px -10px rgba(0, 0, 0, 0.1);
    }
    .pnks-nav-wrapper.is-open {
        display: block;
    }
    .pnks-nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
    .pnks-dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        padding-left: 1rem;
    }
}

/* ==========================================================================
   AI Overview / GEO Components (Answer-First Box, Tables, FAQ Accordion)
   ========================================================================== */
.geo-answer-box {
    background: linear-gradient(135deg, rgba(1, 49, 182, 0.04) 0%, rgba(252, 185, 0, 0.06) 100%);
    border-left: 4px solid #0131b6;
    border-radius: 0 14px 14px 0;
    padding: 1.25rem 1.5rem;
    margin: 1.25rem 0 2rem 0;
    font-size: 1.05rem;
    color: #1e293b;
}

.geo-suggest-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 1.25rem;
}

.geo-suggest-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.95rem;
    border-radius: 50px;
    background: #ffffff;
    border: 1px solid #cbd5e1;
    color: #334155;
    font-size: 0.85rem;
    font-weight: 500;
}

.geo-suggest-pill:hover {
    border-color: #0131b6;
    color: #0131b6;
    background: #f8fafc;
}

/* Semantic Pricing & Matrix Table */
.pnks-table-wrap {
    overflow-x: auto;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
    background: #ffffff;
    box-shadow: 0 12px 30px -12px rgba(15, 23, 42, 0.06);
}

.pnks-geo-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.95rem;
}

.pnks-geo-table th {
    background: #0f172a;
    color: #ffffff;
    font-weight: 600;
    padding: 1.1rem 1.25rem;
    border-bottom: 2px solid #0131b6;
}

.pnks-geo-table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid #e2e8f0;
    color: #1e293b;
    vertical-align: top;
}

.pnks-geo-table tr:last-child td {
    border-bottom: none;
}

.pnks-geo-table tr:nth-child(even) td {
    background: #f8fafc;
}

/* Native HTML5 Details/Summary FAQ for AI Overview */
.pnks-faq-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.pnks-faq-item {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    padding: 1.15rem 1.5rem;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.pnks-faq-item[open] {
    border-color: #0131b6;
    box-shadow: 0 12px 28px -12px rgba(1, 49, 182, 0.12);
}

.pnks-faq-question {
    font-size: 1.1rem;
    font-weight: 600;
    color: #0f172a;
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.pnks-faq-question::-webkit-details-marker {
    display: none;
}

.pnks-faq-question::after {
    content: "+";
    font-size: 1.4rem;
    font-weight: 700;
    color: #0131b6;
    transition: transform 0.25s ease;
}

.pnks-faq-item[open] .pnks-faq-question::after {
    content: "−";
}

.pnks-faq-answer {
    margin-top: 0.9rem;
    padding-top: 0.9rem;
    border-top: 1px solid #f1f5f9;
    color: #334155;
    font-size: 0.98rem;
    line-height: 1.75;
}

/* ==========================================================================
   Portfolio & Client Grids (Native CSS Grid replacing Isotope/Packery)
   ========================================================================== */
.pnks-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.75rem;
}

.pnks-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
}

.pnks-logo-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1.25rem;
    align-items: center;
}

.pnks-logo-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 92px;
    transition: transform 0.25s ease, border-color 0.25s ease;
}

.pnks-logo-card:hover {
    transform: translateY(-4px);
    border-color: #0131b6;
}

.pnks-logo-card img {
    max-height: 56px;
    width: auto;
    object-fit: contain;
}

.pnks-portfolio-card {
    background: #ffffff;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid #e2e8f0;
    display: flex;
    flex-direction: column;
}

.pnks-portfolio-thumb {
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background: #f1f5f9;
}

.pnks-portfolio-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.45s ease;
}

.pnks-portfolio-card:hover .pnks-portfolio-thumb img {
    transform: scale(1.05);
}

.pnks-portfolio-body {
    padding: 1.25rem;
}

.pnks-portfolio-tag {
    font-size: 0.78rem;
    font-weight: 600;
    color: #0131b6;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.pnks-portfolio-title {
    margin: 0.35rem 0 0.5rem 0;
    font-size: 1.1rem;
    font-weight: 700;
    color: #0f172a;
}

/* Footer Layout */
.pnks-footer {
    background: #0f172a;
    color: #cbd5e1;
    padding: 4.5rem 1.5rem 2.5rem 1.5rem;
}

.pnks-footer a {
    color: #cbd5e1;
}

.pnks-footer a:hover {
    color: #fcb900;
}

.pnks-footer-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 2.5rem;
}

@media (max-width: 1024px) {
    .pnks-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .pnks-grid-3 { grid-template-columns: repeat(2, 1fr); }
    .pnks-logo-grid { grid-template-columns: repeat(4, 1fr); }
    .pnks-footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .pnks-grid-4, .pnks-grid-3 { grid-template-columns: 1fr; }
    .pnks-logo-grid { grid-template-columns: repeat(2, 1fr); }
    .pnks-footer-grid { grid-template-columns: 1fr; }
}