/*
Theme Name: DiscoveryTrials Theme
Theme URI: https://joindiscoverytrials.com
Author: JoinDiscoveryTrials
Author URI: https://joindiscoverytrials.com
Description: A professional, HIPAA-aware WordPress theme for a clinical research site. Clean trustworthy design with full security hardening, Customizer controls, and an accessible responsive layout.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: discoverytrialstheme
Tags: clinical-research, medical, professional, custom-logo, custom-menu, featured-images, full-width-template, threaded-comments, responsive-layout, accessibility-ready
*/

/* ==========================================================================
   1. CSS CUSTOM PROPERTIES
   ========================================================================== */
:root {
    --dt-primary:   #0D1230;
    --dt-secondary: #124A8E;
    --dt-accent:    #1E88E5;
    --dt-light:     #6EC1F4;
    --dt-neutral:   #6B7280;

    --dt-white:       #ffffff;
    --dt-off-white:   #F8FAFC;
    --dt-light-gray:  #E5E7EB;
    --dt-dark-text:   #111827;
    --dt-body-text:   #374151;

    --dt-font-heading: 'Montserrat', sans-serif;
    --dt-font-body:    'Open Sans', sans-serif;

    --dt-radius:       8px;
    --dt-radius-lg:    16px;
    --dt-shadow:       0 4px 16px rgba(13, 18, 48, 0.10);
    --dt-shadow-lg:    0 8px 32px rgba(13, 18, 48, 0.16);
    --dt-transition:   0.25s ease;

    --dt-container:    1200px;
    --dt-gap:          2rem;
}

/* ==========================================================================
   2. RESET & BASE
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--dt-font-body);
    font-weight: 400;
    color: var(--dt-body-text);
    background: var(--dt-white);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

img, video, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--dt-accent); text-decoration: none; transition: color var(--dt-transition); }
a:hover, a:focus { color: var(--dt-secondary); }
a:focus-visible { outline: 3px solid var(--dt-light); outline-offset: 2px; border-radius: 2px; }
ul, ol { list-style: none; }
button, input, textarea, select { font-family: inherit; font-size: inherit; }

/* ==========================================================================
   3. TYPOGRAPHY
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--dt-font-heading);
    font-weight: 700;
    color: var(--dt-primary);
    line-height: 1.25;
    letter-spacing: -0.01em;
}

h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.6rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: clamp(1.1rem, 2vw, 1.375rem); font-weight: 600; }
h5 { font-size: 1.125rem; font-weight: 600; }
h6 { font-size: 1rem; font-weight: 600; }

p { margin-bottom: 1.25rem; }
p:last-child { margin-bottom: 0; }

strong, b { font-weight: 600; }
em, i { font-style: italic; }
small { font-size: 0.875rem; }

blockquote {
    border-left: 4px solid var(--dt-accent);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    background: var(--dt-off-white);
    border-radius: 0 var(--dt-radius) var(--dt-radius) 0;
    font-style: italic;
    color: var(--dt-secondary);
}

blockquote cite { display: block; margin-top: 0.5rem; font-style: normal; font-size: 0.875rem; color: var(--dt-neutral); }

pre, code {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9em;
    background: var(--dt-off-white);
    border: 1px solid var(--dt-light-gray);
}

code { padding: 0.125rem 0.375rem; border-radius: 3px; }
pre { padding: 1.25rem; overflow-x: auto; border-radius: var(--dt-radius); }
pre code { background: none; border: none; padding: 0; }

hr {
    border: none;
    border-top: 1px solid var(--dt-light-gray);
    margin: 2rem 0;
}

/* ==========================================================================
   4. LAYOUT HELPERS
   ========================================================================== */
.container {
    max-width: var(--dt-container);
    margin-inline: auto;
    padding-inline: 1.25rem;
}

.container--narrow { max-width: 800px; }
.container--wide   { max-width: 1400px; }

.section {
    padding-block: 5rem;
}

.section--sm  { padding-block: 3rem; }
.section--lg  { padding-block: 7rem; }

.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 440px), 1fr)); gap: var(--dt-gap); }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); gap: var(--dt-gap); }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: var(--dt-gap); }

.flex        { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between{ display: flex; align-items: center; justify-content: space-between; }
.gap-1  { gap: 0.5rem; }
.gap-2  { gap: 1rem; }
.gap-3  { gap: 1.5rem; }

.text-center { text-align: center; }
.text-right  { text-align: right; }

.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -9999px; left: 1rem;
    background: var(--dt-accent);
    color: var(--dt-white);
    padding: 0.5rem 1rem;
    border-radius: var(--dt-radius);
    font-weight: 600;
    z-index: 9999;
    transition: top var(--dt-transition);
}
.skip-link:focus { top: 1rem; color: var(--dt-white); }

/* ==========================================================================
   5. BUTTONS
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    border-radius: var(--dt-radius);
    font-family: var(--dt-font-heading);
    font-weight: 600;
    font-size: 0.9375rem;
    cursor: pointer;
    border: 2px solid transparent;
    transition: background var(--dt-transition), color var(--dt-transition), border-color var(--dt-transition), transform var(--dt-transition), box-shadow var(--dt-transition);
    text-align: center;
    line-height: 1;
    white-space: nowrap;
}

.btn:hover { transform: translateY(-2px); box-shadow: var(--dt-shadow); }
.btn:active { transform: translateY(0); }

.btn--primary {
    background: var(--dt-accent);
    color: var(--dt-white);
    border-color: var(--dt-accent);
}
.btn--primary:hover { background: var(--dt-secondary); border-color: var(--dt-secondary); color: var(--dt-white); }

.btn--secondary {
    background: transparent;
    color: var(--dt-accent);
    border-color: var(--dt-accent);
}
.btn--secondary:hover { background: var(--dt-accent); color: var(--dt-white); }

.btn--white {
    background: var(--dt-white);
    color: var(--dt-primary);
    border-color: var(--dt-white);
}
.btn--white:hover { background: var(--dt-off-white); color: var(--dt-secondary); }

.btn--ghost {
    background: rgba(255,255,255,0.15);
    color: var(--dt-white);
    border-color: rgba(255,255,255,0.5);
    backdrop-filter: blur(4px);
}
.btn--ghost:hover { background: rgba(255,255,255,0.25); color: var(--dt-white); }

.btn--sm { padding: 0.5rem 1.25rem; font-size: 0.875rem; }
.btn--lg { padding: 1rem 2.5rem; font-size: 1rem; }

/* ==========================================================================
   6. SITE HEADER & NAVIGATION
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: #ffffff;
    border-bottom: 1px solid var(--dt-light-gray);
    box-shadow: 0 2px 12px rgba(13,18,48,0.07);
    display: flex;
    align-items: center;
    min-height: 0;
    padding-block: 0.6875rem;
    padding-inline: 1.5rem;
    gap: 1.5rem;
    transition: box-shadow 0.25s ease;
}

/* kept for any legacy templates that still use .header-inner */
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    width: 100%;
}

/* Logo anchor */
.site-header__logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    text-decoration: none;
}

/* Force logo size — overrides custom-logo output and max-height caps */
.site-header__logo img,
.site-header__logo .site-logo,
.site-header__logo .custom-logo,
.site-header .custom-logo-link img {
    height: 55px !important;
    width: auto !important;
    max-height: none !important;
    display: block;
}

/* Right side wrapper */
.site-header__right {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-left: auto;
}

/* CTA button — exact same size as hero .lp-cta-main */
.site-header__cta {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem !important;
    white-space: nowrap;
    padding: 1rem 2.25rem !important;
    font-size: 1.0625rem !important;
    border-radius: 9px !important;
    font-weight: 700;
    margin-right: 1.5rem;
}
.site-header__cta svg { width: 18px; height: 18px; }

/* Legacy branding — kept for any old template references */
.site-branding { display: flex; align-items: center; gap: 0.75rem; flex-shrink: 0; }
.site-branding a,
.site-branding__logo-link { display: flex; align-items: center; gap: 0.75rem; }

.custom-logo,
.site-logo {
    max-height: 90px;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
}

@media (max-width: 480px) {
    .custom-logo,
    .site-logo { max-height: 70px; }
}

.site-title-text {
    font-family: var(--dt-font-heading);
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--dt-primary);
    line-height: 1.2;
}

.site-tagline {
    font-size: 0.75rem;
    color: var(--dt-neutral);
    font-weight: 300;
    margin-top: 0.1rem;
}

/* Primary Nav */
.primary-nav { display: flex; align-items: center; gap: 0.25rem; }

.primary-nav a {
    display: block;
    padding: 0.5rem 0.875rem;
    color: var(--dt-body-text);
    font-family: var(--dt-font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: var(--dt-radius);
    transition: color var(--dt-transition), background var(--dt-transition);
    white-space: nowrap;
}

.primary-nav a:hover,
.primary-nav .current-menu-item > a,
.primary-nav .current-page-ancestor > a {
    color: var(--dt-accent);
    background: rgba(30,136,229,0.07);
}

/* Dropdown menus */
.primary-nav .menu { display: flex; align-items: center; gap: 0.25rem; }
.primary-nav .menu-item { position: relative; }

.primary-nav .sub-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    min-width: 220px;
    background: var(--dt-white);
    border-radius: var(--dt-radius);
    box-shadow: var(--dt-shadow-lg);
    padding: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--dt-transition), visibility var(--dt-transition), transform var(--dt-transition);
    z-index: 100;
}

.primary-nav .menu-item:hover > .sub-menu,
.primary-nav .menu-item:focus-within > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.primary-nav .sub-menu a {
    color: var(--dt-body-text);
    padding: 0.5rem 0.875rem;
    border-radius: calc(var(--dt-radius) - 2px);
    font-size: 0.875rem;
}

.primary-nav .sub-menu a:hover { color: var(--dt-accent); background: var(--dt-off-white); }

/* Header CTA — legacy */
.header-cta { margin-left: 0.75rem; display: none; }

/* Hamburger toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--dt-radius);
    transition: background var(--dt-transition);
}

.nav-toggle:hover { background: rgba(13,18,48,0.06); }

.nav-toggle span {
    display: block;
    width: 24px; height: 2px;
    background: var(--dt-primary);
    border-radius: 2px;
    transition: transform var(--dt-transition), opacity var(--dt-transition);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   7. HERO SECTION
   ========================================================================== */
.hero {
    position: relative;
    background: linear-gradient(135deg, var(--dt-primary) 0%, var(--dt-secondary) 60%, var(--dt-accent) 100%);
    color: var(--dt-white);
    padding-block: 6rem;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60'%3E%3Ccircle cx='30' cy='30' r='1' fill='rgba(110,193,244,0.15)'/%3E%3C/svg%3E");
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 0; right: 0;
    height: 80px;
    background: var(--dt-white);
    clip-path: ellipse(55% 100% at 50% 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 780px;
    margin-inline: auto;
}

.hero-eyebrow {
    display: inline-block;
    background: rgba(110, 193, 244, 0.2);
    border: 1px solid rgba(110, 193, 244, 0.4);
    color: var(--dt-light);
    font-family: var(--dt-font-heading);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.375rem 1rem;
    border-radius: 100px;
    margin-bottom: 1.25rem;
}

.hero h1 {
    color: var(--dt-white);
    font-size: clamp(2.2rem, 5.5vw, 3.5rem);
    margin-bottom: 1.25rem;
    text-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.hero-sub {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: rgba(255,255,255,0.85);
    margin-bottom: 2.5rem;
    font-weight: 300;
    max-width: 600px;
    margin-inline: auto;
    line-height: 1.65;
}

.hero-sub:last-of-type { margin-bottom: 2.5rem; }

.hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* Trust badges */
.trust-bar {
    background: var(--dt-off-white);
    border-top: 1px solid var(--dt-light-gray);
    border-bottom: 1px solid var(--dt-light-gray);
    padding-block: 1.5rem;
}

.trust-bar-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    flex-wrap: wrap;
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dt-secondary);
}

.trust-badge svg { width: 20px; height: 20px; flex-shrink: 0; }

/* ==========================================================================
   8. CARDS
   ========================================================================== */
.card {
    background: var(--dt-white);
    border-radius: var(--dt-radius-lg);
    box-shadow: var(--dt-shadow);
    overflow: hidden;
    transition: box-shadow var(--dt-transition), transform var(--dt-transition);
    display: flex;
    flex-direction: column;
}

.card:hover { box-shadow: var(--dt-shadow-lg); transform: translateY(-4px); }

.card-thumb { aspect-ratio: 3/2; overflow: hidden; }
.card-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.card:hover .card-thumb img { transform: scale(1.04); }

.card-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }

.card-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    font-size: 0.8125rem;
    color: var(--dt-neutral);
    font-weight: 600;
}

.card-meta time { color: var(--dt-neutral); }
.card-cat {
    display: inline-block;
    background: rgba(30, 136, 229, 0.1);
    color: var(--dt-accent);
    padding: 0.2rem 0.6rem;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.card-body h3 { font-size: 1.125rem; margin-bottom: 0.625rem; }
.card-body h3 a { color: var(--dt-primary); }
.card-body h3 a:hover { color: var(--dt-accent); }

.card-excerpt { font-size: 0.9rem; color: var(--dt-neutral); margin-bottom: 1.25rem; }

.card-footer {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--dt-light-gray);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Feature cards */
.feature-card {
    padding: 2rem;
    background: var(--dt-white);
    border-radius: var(--dt-radius-lg);
    box-shadow: var(--dt-shadow);
    text-align: center;
    transition: transform var(--dt-transition), box-shadow var(--dt-transition);
}

.feature-card:hover { transform: translateY(-4px); box-shadow: var(--dt-shadow-lg); }

.feature-icon {
    width: 64px; height: 64px;
    background: linear-gradient(135deg, var(--dt-secondary), var(--dt-accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
}

.feature-icon svg { width: 32px; height: 32px; color: var(--dt-white); }
.feature-card h3 { margin-bottom: 0.75rem; font-size: 1.125rem; }
.feature-card p { font-size: 0.9375rem; color: var(--dt-neutral); margin: 0; }

/* ==========================================================================
   9. SECTION HEADINGS
   ========================================================================== */
.section-header {
    text-align: center;
    max-width: 650px;
    margin: 0 auto 3.5rem;
}

.section-eyebrow {
    display: inline-block;
    color: var(--dt-accent);
    font-family: var(--dt-font-heading);
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}

.section-header h2 { margin-bottom: 1rem; }
.section-header p  { color: var(--dt-neutral); font-size: 1.0625rem; margin: 0; }

/* ==========================================================================
   10. MAIN CONTENT + SIDEBAR LAYOUT
   ========================================================================== */
.content-area {
    padding-block: 4rem;
}

.content-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 3rem;
    align-items: start;
}

.content-layout--full { grid-template-columns: 1fr; }

/* Posts loop */
.posts-grid {
    display: grid;
    gap: 2rem;
}

.page-header {
    background: var(--dt-off-white);
    border-bottom: 1px solid var(--dt-light-gray);
    padding-block: 3rem;
    margin-bottom: 3rem;
}

.page-header h1 { margin-bottom: 0.5rem; }
.page-header .page-description { color: var(--dt-neutral); font-size: 1.0625rem; margin: 0; }

/* Single post / page */
.single-post-header {
    background: linear-gradient(135deg, var(--dt-primary), var(--dt-secondary));
    color: var(--dt-white);
    padding-block: 4rem;
}

.single-post-header h1 { color: var(--dt-white); margin-bottom: 1rem; }
.single-post-meta { display: flex; gap: 1.5rem; flex-wrap: wrap; color: rgba(255,255,255,0.75); font-size: 0.9rem; }
.single-post-meta span { display: flex; align-items: center; gap: 0.375rem; }

.post-featured-image { margin-bottom: 2.5rem; border-radius: var(--dt-radius-lg); overflow: hidden; }
.post-featured-image img { width: 100%; }

.post-content h2, .post-content h3 { margin-top: 2rem; margin-bottom: 0.75rem; }
.post-content ul, .post-content ol { margin: 1rem 0 1.25rem 1.5rem; }
.post-content ul { list-style: disc; }
.post-content ol { list-style: decimal; }
.post-content li { margin-bottom: 0.375rem; }
.post-content a { text-decoration: underline; text-underline-offset: 2px; }

.post-tags { margin-top: 2rem; display: flex; gap: 0.5rem; flex-wrap: wrap; }
.post-tag {
    display: inline-block;
    background: var(--dt-off-white);
    border: 1px solid var(--dt-light-gray);
    color: var(--dt-neutral);
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
    font-size: 0.8125rem;
    font-weight: 600;
}
.post-tag:hover { border-color: var(--dt-accent); color: var(--dt-accent); }

.post-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--dt-light-gray);
}

.post-nav-item { padding: 1.25rem; background: var(--dt-off-white); border-radius: var(--dt-radius); }
.post-nav-item a { color: var(--dt-primary); font-weight: 600; font-size: 0.9rem; }
.post-nav-item a:hover { color: var(--dt-accent); }
.post-nav-label { font-size: 0.75rem; color: var(--dt-neutral); text-transform: uppercase; letter-spacing: 0.08em; font-weight: 700; margin-bottom: 0.375rem; }
.post-nav-item--next { text-align: right; }

/* ==========================================================================
   11. SIDEBAR
   ========================================================================== */
.sidebar { position: sticky; top: 100px; }

.widget {
    background: var(--dt-white);
    border: 1px solid var(--dt-light-gray);
    border-radius: var(--dt-radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.widget:last-child { margin-bottom: 0; }

.widget-title {
    font-family: var(--dt-font-heading);
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--dt-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 1rem;
    padding-bottom: 0.625rem;
    border-bottom: 2px solid var(--dt-accent);
}

.widget ul li {
    padding: 0.4rem 0;
    border-bottom: 1px solid var(--dt-light-gray);
    font-size: 0.9rem;
}
.widget ul li:last-child { border-bottom: none; }
.widget ul li a { color: var(--dt-body-text); }
.widget ul li a:hover { color: var(--dt-accent); }

/* Search widget */
.widget .search-form {
    display: flex;
    gap: 0.5rem;
}
.widget .search-field {
    flex: 1;
    padding: 0.6rem 0.875rem;
    border: 1px solid var(--dt-light-gray);
    border-radius: var(--dt-radius);
    font-size: 0.9rem;
    transition: border-color var(--dt-transition);
}
.widget .search-field:focus { border-color: var(--dt-accent); outline: none; }
.widget .search-submit {
    padding: 0.6rem 1rem;
    background: var(--dt-accent);
    color: var(--dt-white);
    border: none;
    border-radius: var(--dt-radius);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.875rem;
    transition: background var(--dt-transition);
}
.widget .search-submit:hover { background: var(--dt-secondary); }

/* ==========================================================================
   12. FORMS
   ========================================================================== */
.form-group { margin-bottom: 1.25rem; }

label {
    display: block;
    margin-bottom: 0.375rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--dt-dark-text);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="number"],
input[type="date"],
input[type="search"],
input[type="password"],
textarea,
select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1.5px solid var(--dt-light-gray);
    border-radius: var(--dt-radius);
    font-size: 1rem;
    color: var(--dt-dark-text);
    background: var(--dt-white);
    transition: border-color var(--dt-transition), box-shadow var(--dt-transition);
    appearance: none;
}

input:focus, textarea:focus, select:focus {
    border-color: var(--dt-accent);
    box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.12);
    outline: none;
}

textarea { resize: vertical; min-height: 140px; }
select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236B7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1rem;
    padding-right: 2.5rem;
}

.form-note { font-size: 0.8125rem; color: var(--dt-neutral); margin-top: 0.375rem; }

/* Comment form */
#respond { margin-top: 3rem; }
#respond h3 { margin-bottom: 1.5rem; }

/* ==========================================================================
   13. PAGINATION
   ========================================================================== */
.pagination {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 3rem;
    flex-wrap: wrap;
}

.page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    border-radius: var(--dt-radius);
    font-family: var(--dt-font-heading);
    font-weight: 700;
    font-size: 0.9rem;
    border: 1.5px solid var(--dt-light-gray);
    color: var(--dt-body-text);
    transition: background var(--dt-transition), color var(--dt-transition), border-color var(--dt-transition);
}

.page-numbers:hover { border-color: var(--dt-accent); color: var(--dt-accent); }
.page-numbers.current { background: var(--dt-accent); border-color: var(--dt-accent); color: var(--dt-white); }
.page-numbers.dots { border: none; cursor: default; }
.page-numbers.dots:hover { color: inherit; }

/* ==========================================================================
   14. CLINICAL TRIAL SPECIFIC COMPONENTS
   ========================================================================== */
.disclaimer-banner {
    background: rgba(30, 136, 229, 0.07);
    border: 1px solid rgba(30, 136, 229, 0.25);
    border-left: 4px solid var(--dt-accent);
    border-radius: var(--dt-radius);
    padding: 1rem 1.25rem;
    font-size: 0.875rem;
    color: var(--dt-secondary);
    margin-bottom: 1.5rem;
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
}

.disclaimer-banner svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 0.1rem; }

.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--dt-radius);
    font-size: 0.9375rem;
    margin-bottom: 1.25rem;
    border: 1px solid;
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
}

.alert--info    { background: rgba(30,136,229,0.06);  border-color: rgba(30,136,229,0.3);  color: #1a5fa8; }
.alert--success { background: rgba(22,163,74,0.06);   border-color: rgba(22,163,74,0.3);   color: #166534; }
.alert--warning { background: rgba(234,179,8,0.06);   border-color: rgba(234,179,8,0.3);   color: #854d0e; }
.alert--error   { background: rgba(220,38,38,0.06);   border-color: rgba(220,38,38,0.3);   color: #991b1b; }

/* Stats / counters */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem 1rem;
    background: var(--dt-white);
    border-radius: var(--dt-radius-lg);
    box-shadow: var(--dt-shadow);
}

.stat-number {
    font-family: var(--dt-font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--dt-accent);
    line-height: 1;
    margin-bottom: 0.375rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--dt-neutral);
    font-weight: 600;
}

/* CTA Banner */
.cta-banner {
    background: linear-gradient(135deg, var(--dt-primary) 0%, var(--dt-secondary) 100%);
    color: var(--dt-white);
    border-radius: var(--dt-radius-lg);
    padding: 3.5rem 2rem;
    text-align: center;
}

.cta-banner h2 { color: var(--dt-white); margin-bottom: 0.875rem; }
.cta-banner p  { color: rgba(255,255,255,0.8); margin-bottom: 2rem; font-size: 1.0625rem; max-width: 560px; margin-inline: auto; }
.cta-banner .btn { margin: 0 auto; }
.cta-banner .cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ==========================================================================
   15. FOOTER
   ========================================================================== */
.site-footer {
    background: var(--dt-primary);
    color: rgba(255,255,255,0.75);
    padding-top: 4rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(255,255,255,0.12);
}

.footer-brand .site-title-text { color: var(--dt-white); font-size: 1.25rem; margin-bottom: 0.75rem; }
.footer-logo { max-height: 50px; margin-bottom: 0.75rem; }
.footer-brand p { font-size: 0.9rem; line-height: 1.65; margin-bottom: 1.25rem; }

.footer-social { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.footer-social a {
    width: 36px; height: 36px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.75);
    transition: background var(--dt-transition), color var(--dt-transition);
}
.footer-social a:hover { background: var(--dt-accent); color: var(--dt-white); }
.footer-social svg { width: 16px; height: 16px; }

.footer-col h4 {
    font-family: var(--dt-font-heading);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--dt-white);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.25rem;
}

.footer-col ul li {
    margin-bottom: 0.625rem;
    font-size: 0.9rem;
}

.footer-col ul li a {
    color: rgba(255,255,255,0.65);
    transition: color var(--dt-transition), padding-left var(--dt-transition);
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
}
.footer-col ul li a:hover { color: var(--dt-light); padding-left: 4px; }

/* Footer bottom */
.footer-bottom {
    padding-block: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-copyright { font-size: 0.875rem; }
.footer-disclaimer {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.45);
    text-align: center;
    max-width: 680px;
    margin-inline: auto;
}

.footer-legal-links {
    display: flex;
    gap: 1.25rem;
    font-size: 0.875rem;
    flex-wrap: wrap;
}
.footer-legal-links a { color: rgba(255,255,255,0.55); }
.footer-legal-links a:hover { color: var(--dt-light); }

/* ==========================================================================
   16. 404 PAGE
   ========================================================================== */
.error-404 {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-block: 5rem;
}

.error-404-number {
    font-family: var(--dt-font-heading);
    font-size: clamp(6rem, 15vw, 10rem);
    font-weight: 800;
    color: var(--dt-light-gray);
    line-height: 1;
    margin-bottom: 1rem;
}

.error-404 h1 { margin-bottom: 1rem; }
.error-404 p  { color: var(--dt-neutral); margin-bottom: 2rem; }

/* ==========================================================================
   17. UTILITY CLASSES
   ========================================================================== */
.hidden     { display: none !important; }
.bg-primary   { background-color: var(--dt-primary); }
.bg-secondary { background-color: var(--dt-secondary); }
.bg-accent    { background-color: var(--dt-accent); }
.bg-light     { background-color: var(--dt-off-white); }
.text-white   { color: var(--dt-white); }
.text-accent  { color: var(--dt-accent); }
.text-neutral { color: var(--dt-neutral); }
.rounded      { border-radius: var(--dt-radius); }
.shadow       { box-shadow: var(--dt-shadow); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 2rem; }
.mt-4 { margin-top: 3rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 2rem; }
.mb-4 { margin-bottom: 3rem; }

/* ==========================================================================
   18. RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
    .content-layout { grid-template-columns: 1fr 280px; gap: 2rem; }
}

@media (max-width: 768px) {
    :root { --dt-gap: 1.5rem; }

    .section { padding-block: 3.5rem; }
    .section--lg { padding-block: 5rem; }

    /* Mobile nav */
    .nav-toggle { display: flex; }

    .primary-nav {
        display: none;
        position: fixed;
        inset: 0;
        top: 80px;
        background: #ffffff;
        flex-direction: column;
        align-items: stretch;
        padding: 1.5rem;
        gap: 0.25rem;
        overflow-y: auto;
        z-index: 999;
    }

    .primary-nav.is-open { display: flex; }

    .primary-nav .menu { flex-direction: column; gap: 0; }
    .primary-nav .menu-item { width: 100%; }
    .primary-nav a { padding: 0.75rem 1rem; font-size: 1rem; }

    .primary-nav .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: rgba(255,255,255,0.05);
        padding: 0.25rem 0 0.25rem 1rem;
        border-radius: 0;
        display: none;
    }
    .primary-nav .menu-item.is-open > .sub-menu { display: block; }
    .primary-nav .sub-menu a { color: var(--dt-neutral); }
    .primary-nav .sub-menu a:hover { color: var(--dt-accent); background: transparent; }

    .header-cta { display: none; }
    .site-header { min-height: 100px; padding-inline: 1rem; }

    .content-layout { grid-template-columns: 1fr; }
    .sidebar { position: static; }

    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .footer-legal-links { justify-content: center; }

    .post-nav { grid-template-columns: 1fr; }
    .post-nav-item--next { text-align: left; }

    .stats-row { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
    .hero-actions { flex-direction: column; align-items: center; }
    .trust-bar-inner { gap: 1.25rem; }
    .stats-row { grid-template-columns: 1fr 1fr; }
    .cta-banner { padding: 2.5rem 1.25rem; }
    .cta-banner .cta-actions { flex-direction: column; align-items: center; }
}

/* ==========================================================================
   19. PRINT
   ========================================================================== */
@media print {
    .site-header, .site-footer, .sidebar, .nav-toggle, .hero-actions, .btn { display: none !important; }
    body { font-size: 12pt; color: #000; background: #fff; }
    a { color: #000; text-decoration: underline; }
    .container { max-width: 100%; padding: 0; }
}

/* ==========================================================================
   20. ACCESSIBILITY
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}

@media (prefers-color-scheme: dark) {
    /* Future: dark mode support hook */
}