/* ==========================================================================
   HTCTheme — Main Base Stylesheet
   ========================================================================== */

/* === 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(--font-primary); font-size: var(--text-base); color: var(--color-text); background: var(--color-bg); line-height: var(--leading-relaxed); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-primary-dark); }
ul, ol { list-style: none; }

/* === Container === */
.container { width: 100%; max-width: var(--container-max); margin-left: auto; margin-right: auto; padding-left: var(--container-padding); padding-right: var(--container-padding); }

/* === Typography === */
h1, h2, h3, h4, h5, h6 { font-family: var(--font-primary); font-weight: var(--weight-bold); color: var(--color-text); line-height: var(--leading-tight); }
h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); font-weight: var(--weight-semibold); }
h4 { font-size: 1.25rem; font-weight: var(--weight-semibold); }
h5 { font-size: 1.125rem; font-weight: var(--weight-semibold); }
p { margin-bottom: var(--space-4); color: var(--color-text-secondary); line-height: var(--leading-relaxed); }
p:last-child { margin-bottom: 0; }

/* === Section Label === */
.section-label { display: inline-block; font-size: var(--text-xs); font-weight: var(--weight-semibold); text-transform: uppercase; letter-spacing: 0.15em; color: var(--color-primary); margin-bottom: var(--space-3); }
.section-label::after { content: ''; display: block; width: 40px; height: 2px; background: var(--color-primary); margin-top: var(--space-2); }

/* === Sections === */
.section { padding: var(--section-padding) 0; }
.section--sm { padding: var(--section-padding-sm) 0; }
.section--dark { background: var(--color-navy); color: var(--color-white); }
.section--dark h1,.section--dark h2,.section--dark h3,.section--dark h4 { color: var(--color-white); }
.section--dark p { color: rgba(255,255,255,0.7); }
.section--light { background: var(--color-bg-light); }
.section--blue { background: var(--color-primary-bg); }

/* === Section Header === */
.section-header { margin-bottom: var(--space-16); }
.section-header--center { text-align: center; }
.section-header--center .section-label::after { margin-left: auto; margin-right: auto; }
.section-header__title { margin-bottom: var(--space-4); }
.section-header__subtitle { font-size: var(--text-lg); color: var(--color-text-light); max-width: 640px; }
.section-header--center .section-header__subtitle { margin-left: auto; margin-right: auto; }

/* === Highlight Text (blue in headings) === */
.text-highlight, .highlight { color: var(--color-primary); }

/* === Grid layouts === */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }
.grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-6); }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: var(--space-6); }

/* === Flex Utilities === */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* === Buttons === */
.btn { display: inline-flex; align-items: center; gap: var(--space-2); padding: 0.75rem 1.75rem; font-size: var(--text-base); font-weight: var(--weight-semibold); border-radius: var(--radius-md); border: 2px solid transparent; cursor: pointer; transition: all var(--transition-base); text-decoration: none; line-height: 1; white-space: nowrap; }
.btn--primary { background: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }
.btn--primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); color: var(--color-white); }
.btn--secondary { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn--secondary:hover { background: var(--color-primary); color: var(--color-white); }
.btn--dark { background: var(--color-navy); color: var(--color-white); border-color: var(--color-navy); }
.btn--dark:hover { background: var(--color-navy-mid); border-color: var(--color-navy-mid); color: var(--color-white); }
.btn--white { background: var(--color-white); color: var(--color-primary); border-color: var(--color-white); }
.btn--white:hover { background: var(--color-bg-lighter); color: var(--color-primary-dark); }
.btn--sm { padding: 0.5rem 1.25rem; font-size: var(--text-sm); }
.btn--lg { padding: 1rem 2.25rem; font-size: var(--text-lg); }
.btn-group { display: flex; gap: var(--space-4); flex-wrap: wrap; }
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

/* === Badges === */
.badge { display: inline-flex; align-items: center; padding: 0.25rem 0.75rem; border-radius: var(--radius-full); font-size: var(--text-xs); font-weight: var(--weight-semibold); }
.badge--primary { background: var(--color-primary-bg); color: var(--color-primary); }
.badge--dark { background: rgba(255,255,255,0.15); color: var(--color-white); }

/* === Divider === */
.divider { width: 48px; height: 3px; background: var(--color-primary); border-radius: var(--radius-full); margin: var(--space-4) 0 var(--space-6); }
.divider--center { margin-left: auto; margin-right: auto; }

/* === Stats row === */
.stats-row { display: flex; flex-wrap: wrap; gap: var(--space-6); }
.stat-item { display: flex; align-items: flex-start; gap: var(--space-3); }
.stat-item__icon { width: 48px; height: 48px; flex-shrink: 0; color: var(--color-primary); }
.stat-item__content {}
.stat-item__number { font-size: var(--text-2xl); font-weight: var(--weight-bold); color: var(--color-text); line-height: 1.2; }
.stat-item__label { font-size: var(--text-sm); color: var(--color-text-light); }

/* === Two column split === */
.split-layout { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-16); align-items: center; }
.split-layout--wide { grid-template-columns: 1.2fr 0.8fr; }
.split-layout--narrow { grid-template-columns: 0.8fr 1.2fr; }

/* === Feature List === */
.feature-list { list-style: none; display: flex; flex-direction: column; gap: var(--space-3); }
.feature-list li { display: flex; align-items: flex-start; gap: var(--space-3); font-size: var(--text-sm); color: var(--color-text-secondary); }
.feature-list li::before { content: ''; width: 20px; height: 20px; background: var(--color-primary-bg); border-radius: 50%; border: 2px solid var(--color-primary); flex-shrink: 0; margin-top: 2px; display: flex; align-items: center; justify-content: center; }
.check-list li { display: flex; align-items: flex-start; gap: var(--space-3); }
.check-icon { color: var(--color-primary); flex-shrink: 0; margin-top: 2px; }

/* === Image === */
.img-cover { width: 100%; height: 100%; object-fit: cover; }
.img-rounded { border-radius: var(--radius-lg); }
.img-shadow { box-shadow: var(--shadow-xl); }

/* === Dashboard Mockup === */
.dashboard-mockup { background: var(--color-bg-light); border-radius: var(--radius-xl); padding: var(--space-4); border: 1px solid var(--color-border); box-shadow: var(--shadow-xl); overflow: hidden; }

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

/* === Breadcrumb === */
.breadcrumb { font-size: var(--text-sm); color: var(--color-text-light); margin-bottom: var(--space-4); }
.breadcrumb a { color: var(--color-text-light); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb__sep { margin: 0 var(--space-2); }

/* === Entry content (blog) === */
.entry-content { max-width: 760px; }
.entry-content h2,.entry-content h3 { margin: var(--space-8) 0 var(--space-4); }
.entry-content p { margin-bottom: var(--space-4); }
.entry-content ul,.entry-content ol { padding-left: var(--space-6); margin-bottom: var(--space-4); }
.entry-content ul { list-style: disc; }
.entry-content ol { list-style: decimal; }
.entry-content li { margin-bottom: var(--space-2); color: var(--color-text-secondary); }
.entry-content a { color: var(--color-primary); text-decoration: underline; }
.entry-content blockquote { border-left: 4px solid var(--color-primary); padding: var(--space-4) var(--space-6); background: var(--color-bg-light); margin: var(--space-8) 0; border-radius: 0 var(--radius-md) var(--radius-md) 0; }
.entry-content img { border-radius: var(--radius-lg); margin: var(--space-8) 0; }

/* === No results === */
.no-results { text-align: center; padding: var(--section-padding) 0; }
.no-results__icon { font-size: 4rem; margin-bottom: var(--space-4); }

/* === Pagination === */
.pagination { display: flex; justify-content: center; gap: var(--space-2); margin-top: var(--space-12); }
.pagination a,.pagination span { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: var(--radius-md); font-size: var(--text-sm); font-weight: var(--weight-medium); border: 1px solid var(--color-border); color: var(--color-text); transition: all var(--transition-fast); }
.pagination a:hover,.pagination .current { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-white); }

/* === Icon circles === */
.icon-circle { width: 64px; height: 64px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.icon-circle--primary { background: var(--color-primary-bg); color: var(--color-primary); }
.icon-circle--white { background: rgba(255,255,255,0.1); color: var(--color-white); }
.icon-circle--border { background: var(--color-white); border: 2px solid var(--color-border); color: var(--color-primary); }
.icon-circle svg { width: 28px; height: 28px; }

/* === Flow steps === */
.flow-steps { display: flex; align-items: flex-start; gap: 0; }
.flow-step { flex: 1; position: relative; text-align: center; padding: var(--space-6) var(--space-4); }
.flow-step:not(:last-child)::after { content: '→'; position: absolute; right: -12px; top: 50%; transform: translateY(-50%); font-size: 1.5rem; color: var(--color-primary); z-index: 1; }
.flow-step__icon { margin: 0 auto var(--space-3); }
.flow-step__title { font-size: var(--text-base); font-weight: var(--weight-semibold); margin-bottom: var(--space-2); }
.flow-step__desc { font-size: var(--text-sm); color: var(--color-text-light); }

/* === Number list === */
.numbered-list { list-style: none; display: flex; flex-direction: column; gap: var(--space-6); }
.numbered-item { display: flex; gap: var(--space-5); }
.numbered-item__num { width: 32px; height: 32px; background: var(--color-primary); color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: var(--weight-bold); font-size: var(--text-sm); flex-shrink: 0; }
.numbered-item__content h4 { margin-bottom: var(--space-1); }
.numbered-item__content p { font-size: var(--text-sm); margin: 0; }

/* === SDG Goals grid === */
.sdg-grid { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.sdg-item { width: 56px; height: 56px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; font-weight: var(--weight-bold); font-size: var(--text-sm); color: white; }

/* === Disclaimer === */
.disclaimer { background: var(--color-bg-light); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-4) var(--space-6); font-size: var(--text-sm); color: var(--color-text-light); display: flex; gap: var(--space-3); align-items: flex-start; }
.disclaimer svg { flex-shrink: 0; color: var(--color-text-lighter); margin-top: 2px; }

/* === Map placeholder === */
.map-placeholder { background: var(--color-bg-lighter); border-radius: var(--radius-lg); height: 200px; display: flex; align-items: center; justify-content: center; color: var(--color-text-light); font-size: var(--text-sm); border: 1px solid var(--color-border); }

/* === Donut chart placeholder === */
.donut-chart { width: 200px; height: 200px; border-radius: 50%; background: conic-gradient(var(--color-primary) 0% 35%, var(--color-primary-light) 35% 55%, #10B981 55% 70%, #F59E0B 70% 85%, var(--color-navy) 85% 100%); display: flex; align-items: center; justify-content: center; position: relative; margin: 0 auto; }
.donut-chart__inner { width: 60%; height: 60%; background: white; border-radius: 50%; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.donut-chart__label { font-size: var(--text-xs); color: var(--color-text-light); }
.donut-chart__value { font-size: var(--text-xl); font-weight: var(--weight-bold); color: var(--color-text); }