/* =============================================
   Code for Research — Main Stylesheet
   Design inspired by snyk.io/de
   ============================================= */

/* ---- Custom Properties ---- */
:root {
    --color-bg:           #0e1c2a;
    --color-surface:      #162535;
    --color-surface-2:    #1e3044;
    --color-border:       rgba(255,255,255,0.08);
    --color-primary:      #05FFAA;
    --color-primary-hover:#00e89a;
    --color-accent:       #05FFAA;
    --color-accent-hover: #3fffc0;
    --color-text:         #f0f6fc;
    --color-text-muted:   #94a3b8;
    --color-text-subtle:  #5a7a94;
    --color-white:        #ffffff;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-sm:   0.875rem;
    --font-size-base: 1rem;
    --font-size-lg:   1.125rem;
    --font-size-xl:   1.25rem;
    --font-size-2xl:  1.5rem;
    --font-size-3xl:  1.875rem;
    --font-size-4xl:  2.25rem;

    --radius:    6px;
    --radius-lg: 12px;
    --radius-xl: 20px;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
    --shadow:    0 4px 24px rgba(0,0,0,0.5);
    --shadow-lg: 0 12px 48px rgba(0,0,0,0.6);

    --transition: 0.2s ease;
    --container:  1200px;
    --header-h:   72px;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
img, video { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent-hover); }
a:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
    border-radius: 2px;
}
button { font-family: inherit; cursor: pointer; border: none; background: none; }
button:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
    border-radius: 2px;
}

/* ---- Accessibility: Skip Link ---- */
.skip-link {
    position: absolute;
    top: -100%;
    left: 1rem;
    z-index: 9999;
    padding: 0.5rem 1rem;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius);
    font-weight: 600;
    transition: top var(--transition);
}
.skip-link:focus { top: 1rem; }

/* ---- Container ---- */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6875rem 1.375rem;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: var(--font-size-sm);
    line-height: 1;
    cursor: pointer;
    transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
    text-decoration: none;
    white-space: nowrap;
    border: 2px solid transparent;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
    background: var(--color-primary);
    color: #0a1a10;
    border-color: var(--color-primary);
}
.btn-primary:hover,
.btn-primary:visited,
a.btn-primary,
a.btn-primary:visited,
a.btn-primary:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: #0a1a10;
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}
.btn-outline:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.btn--sm { padding: 0.5rem 1rem; font-size: var(--font-size-sm); }
.btn--lg { padding: 0.875rem 1.75rem; font-size: var(--font-size-base); }

/* ---- Section helpers ---- */
.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 3.5rem;
}
.section-header h2 { margin-bottom: 0.75rem; }
.section-header p { color: var(--color-text-muted); font-size: var(--font-size-lg); margin-bottom: 1.5rem; }

/* =============================================
   HEADER / NAVIGATION
   ============================================= */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-h);
    background: rgba(14,28,42,0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
    display: flex;
    align-items: center;
    gap: 2rem;
    height: var(--header-h);
}

/* Logo */
.site-header__logo {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    color: var(--color-white);
    flex-shrink: 0;
}
.site-header__logo:hover { color: var(--color-white); }
.site-header__logo img { height: 36px; width: auto; }
.site-header__logo-text {
    font-size: var(--font-size-lg);
    font-weight: 700;
    letter-spacing: -0.02em;
}
/* Logo sizing */
.site-header__logo img { height: 44px; width: auto; }

/* Main Nav */
.main-nav { flex: 1; }

.main-nav__list {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.main-nav__item { position: relative; }

.main-nav__link {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem 0.75rem;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius);
    transition: color var(--transition), background var(--transition);
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    line-height: 1;
}
.main-nav__link:hover,
.main-nav__item:hover > .main-nav__link {
    color: var(--color-white);
    background: var(--color-surface);
}

.main-nav__chevron {
    transition: transform var(--transition);
    flex-shrink: 0;
}

/* Active nav state */
.main-nav__link.is-active {
    color: var(--color-white);
}
.main-nav__link.is-active::after {
    content: '';
    display: block;
    position: absolute;
    bottom: -2px;
    left: 0.75rem;
    right: 0.75rem;
    height: 2px;
    background: var(--color-accent);
    border-radius: 2px;
}
.main-nav__item { position: relative; }
.main-nav__dropdown-link.is-active {
    color: var(--color-accent);
}
.main-nav__item--has-dropdown .main-nav__toggle[aria-expanded="true"] .main-nav__chevron {
    transform: rotate(180deg);
}

/* Dropdown */
.main-nav__dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    min-width: 200px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 0.5rem;
    box-shadow: var(--shadow-lg);
    z-index: 100;
}
.main-nav__dropdown.is-open { display: block; }

.main-nav__dropdown-link {
    display: block;
    padding: 0.5rem 0.75rem;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    border-radius: var(--radius);
    transition: color var(--transition), background var(--transition);
}
.main-nav__dropdown-link:hover {
    color: var(--color-white);
    background: var(--color-surface-2);
}

/* Header Actions */
.site-header__actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 8px;
    border-radius: var(--radius);
    background: none;
    border: 1px solid var(--color-border);
    cursor: pointer;
    flex-shrink: 0;
    transition: border-color var(--transition);
}
.hamburger:hover { border-color: var(--color-primary); }

.hamburger__line {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}
.hamburger[aria-expanded="true"] .hamburger__line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.hamburger[aria-expanded="true"] .hamburger__line:nth-child(2) {
    opacity: 0;
}
.hamburger[aria-expanded="true"] .hamburger__line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* =============================================
   HERO
   ============================================= */
.hero {
    position: relative;
    padding: 6rem 0 5rem;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(5,255,170,0.18) 0%, transparent 70%),
        radial-gradient(ellipse 40% 40% at 80% 50%, rgba(5,200,130,0.1) 0%, transparent 60%);
    pointer-events: none;
}

.hero__default { position: relative; text-align: center; max-width: 800px; margin: 0 auto; }

.hero__badge {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    background: rgba(5,255,170,0.1);
    border: 1px solid rgba(5,255,170,0.3);
    border-radius: 100px;
    color: var(--color-accent);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.hero__title {
    font-size: clamp(2.5rem, 5.5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1.25rem;
    color: var(--color-white);
}
.hero__title--accent {
    background: linear-gradient(135deg, #05FFAA, #00c8ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: clamp(1.0625rem, 2vw, 1.25rem);
    color: var(--color-text-muted);
    max-width: 560px;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
}

.hero__actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* =============================================
   TRUSTED BY
   ============================================= */
.trusted {
    padding: 2.5rem 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.trusted__label {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-subtle);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 1.5rem;
}

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

.trusted__logo {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-subtle);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    opacity: 0.7;
    transition: opacity var(--transition);
}
.trusted__logo:hover { opacity: 1; }

/* =============================================
   FEATURES
   ============================================= */
.features { padding: 6rem 0; }

.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.feature-card:hover {
    border-color: rgba(5,255,170,0.35);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.feature-card__icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(5,255,170,0.1);
    border-radius: var(--radius);
    color: var(--color-accent);
    margin-bottom: 1.25rem;
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 0.625rem;
}
.feature-card p { color: var(--color-text-muted); line-height: 1.7; }

/* =============================================
   STATS
   ============================================= */
.stats {
    padding: 5rem 0;
    background: linear-gradient(180deg, var(--color-surface) 0%, transparent 100%);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.stats__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item { display: flex; flex-direction: column; gap: 0.375rem; }

.stat-item__number {
    font-size: clamp(0.9rem, 2vw, 1.5rem);
    font-weight: 800;
    letter-spacing: 0;
    word-break: break-word;
    color: var(--color-accent);
}

.stat-item__label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 500;
}

/* =============================================
   NEWS LIST PAGE
   ============================================= */
.news-list-page { padding: 4rem 0 6rem; }

.news-list-page__header {
    margin-bottom: 3rem;
}
.news-list-page__title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 800;
    color: var(--color-white);
    margin-bottom: 0.75rem;
}
.news-list-page__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
}

/* Pagination */
.news-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    margin-top: 3rem;
    flex-wrap: wrap;
}

.news-pagination__link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.25rem;
    height: 2.25rem;
    padding: 0 0.625rem;
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
    background: transparent;
    transition: color var(--transition), border-color var(--transition), background var(--transition);
    text-decoration: none;
}
.news-pagination__link:hover {
    color: var(--color-white);
    border-color: var(--color-accent);
}
.news-pagination__link--current {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #0a1a10;
    font-weight: 700;
    cursor: default;
}
.news-pagination__link--current:hover {
    color: #0a1a10;
}
.news-pagination__ellipsis {
    color: var(--color-text-subtle);
    padding: 0 0.25rem;
}

/* =============================================
   NEWS SECTION
   ============================================= */
.news-section { padding: 6rem 0; }

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.news-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.news-card:hover {
    border-color: rgba(5,255,170,0.35);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.news-card__image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.news-card__body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; gap: 0.75rem; }

.news-card__meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}
.news-card__date { font-size: var(--font-size-sm); color: var(--color-text-subtle); }
.news-card__category {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-accent);
    background: rgba(6,182,212,0.1);
    padding: 0.2rem 0.5rem;
    border-radius: 100px;
}

.news-card__title { font-size: var(--font-size-lg); font-weight: 600; line-height: 1.3; }
.news-card__title a { color: var(--color-white); }
.news-card__title a:hover { color: var(--color-accent); }

.news-card__teaser { color: var(--color-text-muted); font-size: var(--font-size-sm); flex: 1; }

.news-card__read-more {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-accent);
    margin-top: auto;
}
.news-card__read-more:hover { color: var(--color-accent-hover); }

.news-empty { color: var(--color-text-muted); text-align: center; padding: 2rem 0; }

/* =============================================
   NEWS DETAIL PAGE
   ============================================= */
.news-detail-page__breadcrumb {
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-border);
    font-size: var(--font-size-sm);
    color: var(--color-text-subtle);
}
.news-detail-page__breadcrumb a { color: var(--color-text-muted); }
.news-detail-page__breadcrumb a:hover { color: var(--color-accent); }
.news-detail-page__breadcrumb span:last-child { color: var(--color-text); }

.news-detail-page__hero {
    width: 100%;
    max-height: 480px;
    overflow: hidden;
}
.news-detail-page__hero img {
    width: 100%;
    max-height: 480px;
    object-fit: cover;
}

.news-detail-page__layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 3rem;
    padding: 3rem 0 5rem;
    align-items: start;
}

/* Article */
.news-detail__meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
    color: var(--color-text-subtle);
    font-size: var(--font-size-sm);
}
.news-detail__date,
.news-detail__author {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}
.news-detail__title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 800;
    color: var(--color-white);
    line-height: 1.2;
    margin-bottom: 1.25rem;
}
.news-detail__teaser {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    margin-bottom: 2rem;
    line-height: 1.7;
    border-left: 3px solid var(--color-accent);
    padding-left: 1rem;
}
.news-detail__body {
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 2.5rem;
}
.news-detail__body h2, .news-detail__body h3 { color: var(--color-white); margin: 1.5rem 0 0.75rem; }
.news-detail__body p { margin-bottom: 1rem; }
.news-detail__body a { color: var(--color-accent); }
.news-detail__footer { padding-top: 1.5rem; border-top: 1px solid var(--color-border); }

/* Sidebar */
.news-detail-sidebar { display: flex; flex-direction: column; gap: 1.5rem; }

.news-detail-sidebar__card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}
.news-detail-sidebar__card p {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.news-detail-sidebar__heading {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-white);
    margin-bottom: 1rem;
}

.news-detail-sidebar__list {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.5rem 1rem;
    font-size: var(--font-size-sm);
}
.news-detail-sidebar__list dt { color: var(--color-text-subtle); }
.news-detail-sidebar__list dd { color: var(--color-text); }

@media (max-width: 768px) {
    .news-detail-page__layout {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 2rem 0 4rem;
    }
    .news-detail-sidebar { flex-direction: row; flex-wrap: wrap; }
    .news-detail-sidebar__card { flex: 1; min-width: 260px; }
}

/* =============================================
   ABOUT PAGE
   ============================================= */
.about-hero {
    padding: 6rem 0 4rem;
    position: relative;
    overflow: hidden;
}
.about-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(5,255,170,0.15) 0%, transparent 70%);
    pointer-events: none;
}
.about-hero__inner {
    position: relative;
    max-width: 760px;
}
.about-hero__title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--color-white);
    margin-bottom: 1.25rem;
    margin-top: 1rem;
}
.about-hero__subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--color-text-muted);
    line-height: 1.7;
    max-width: 600px;
}

.about-section {
    padding: 5rem 0;
    border-top: 1px solid var(--color-border);
}
.about-section__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.about-section__text h2 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 1rem;
}
.about-section__text p {
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}
.about-stat {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    transition: border-color var(--transition);
}
.about-stat:hover { border-color: rgba(5,255,170,0.35); }
.about-stat__number {
    font-size: clamp(0.9rem, 2vw, 1.25rem);
    font-weight: 800;
    color: var(--color-accent);
    word-break: break-word;
}
.about-stat__label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.about-values { padding: 5rem 0; border-top: 1px solid var(--color-border); }
.about-values__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

@media (max-width: 1024px) {
    .about-section__grid { grid-template-columns: 1fr; gap: 3rem; }
}
@media (max-width: 768px) {
    .about-hero { padding: 4rem 0 3rem; }
    .about-values__grid { grid-template-columns: 1fr; }
}

/* =============================================
   CTA BANNER
   ============================================= */
.cta-banner {
    padding: 6rem 0;
    text-align: center;
    background: radial-gradient(ellipse 60% 80% at 50% 50%, rgba(5,255,170,0.12) 0%, transparent 70%);
    border-top: 1px solid var(--color-border);
}
.cta-banner h2 {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 0.75rem;
}
.cta-banner p { color: var(--color-text-muted); font-size: var(--font-size-lg); margin-bottom: 2rem; }

/* =============================================
   PAGE CONTENT (inner pages)
   ============================================= */
.page-content {
    padding: 4rem 0;
    min-height: 50vh;
}
.page-content h1, .page-content h2, .page-content h3 { color: var(--color-white); margin-bottom: 1rem; }
.page-content p { color: var(--color-text-muted); margin-bottom: 1rem; }
.page-content a { color: var(--color-accent); }
.page-content ul, .page-content ol { color: var(--color-text-muted); padding-left: 1.5rem; margin-bottom: 1rem; }

/* =============================================
   FOOTER
   ============================================= */
.site-footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: 4rem 0 2rem;
    margin-top: 2rem;
}

.site-footer__top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--color-border);
}

.site-footer__brand { display: flex; flex-direction: column; gap: 1rem; }
.site-footer__logo { color: var(--color-white); }
.site-footer__logo:hover { color: var(--color-white); }
.site-footer__logo-text { font-size: var(--font-size-xl); font-weight: 700; letter-spacing: -0.02em; }
.site-footer__tagline { color: var(--color-text-muted); font-size: var(--font-size-sm); max-width: 260px; }

.site-footer__social { display: flex; gap: 0.75rem; margin-top: 0.5rem; }
.site-footer__social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius);
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
    transition: color var(--transition), border-color var(--transition);
}
.site-footer__social-link:hover { color: var(--color-white); border-color: var(--color-primary); }

.site-footer__heading {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-white);
    margin-bottom: 1rem;
}

.site-footer__links { display: flex; flex-direction: column; gap: 0.625rem; }
.site-footer__links a { color: var(--color-text-muted); font-size: var(--font-size-sm); }
.site-footer__links a:hover { color: var(--color-white); }

.site-footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 2rem;
    gap: 1rem;
    flex-wrap: wrap;
}
.site-footer__bottom p { color: var(--color-text-subtle); font-size: var(--font-size-sm); }

.site-footer__legal {
    display: flex;
    gap: 1.25rem;
    flex-wrap: wrap;
}
.site-footer__legal a { color: var(--color-text-subtle); font-size: var(--font-size-sm); }
.site-footer__legal a:hover { color: var(--color-text-muted); }

/* =============================================
   RESPONSIVE
   ============================================= */

/* Tablet (≤ 1024px) */
@media (max-width: 1024px) {
    .site-footer__top { grid-template-columns: 1fr 1fr; gap: 2rem; }
    .site-footer__brand { grid-column: 1 / -1; }

    /* Features: 2 columns on tablet */
    .features__grid { grid-template-columns: repeat(2, 1fr); }

    /* News detail: sidebar below article */
    .news-detail-page__layout { grid-template-columns: 1fr; }
    .news-detail-sidebar { flex-direction: row; flex-wrap: wrap; }
    .news-detail-sidebar__card { flex: 1; min-width: 240px; }

    /* News grid: 2 columns on tablet */
    .news-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Mobile (≤ 768px) */
@media (max-width: 768px) {

    /* Header */
    .hamburger { display: flex; }
    .site-header__actions { display: none; }

    .main-nav {
        display: none;
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-bg);
        border-top: 1px solid var(--color-border);
        overflow-y: auto;
        padding: 1.5rem;
        z-index: 999;
    }
    .main-nav.is-open { display: block; }

    .main-nav__list {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .main-nav__link {
        padding: 0.875rem 0;
        font-size: var(--font-size-base);
        color: var(--color-text);
        justify-content: space-between;
        border-bottom: 1px solid var(--color-border);
        border-radius: 0;
    }

    .main-nav__dropdown {
        position: static;
        display: none;
        background: transparent;
        border: none;
        box-shadow: none;
        padding: 0 0 0 1rem;
    }
    .main-nav__dropdown.is-open { display: block; }

    .main-nav__dropdown-link {
        padding: 0.625rem 0;
        border-bottom: 1px solid var(--color-border);
        border-radius: 0;
        font-size: var(--font-size-base);
    }

    /* Mobile nav CTA buttons */
    .main-nav__list::after {
        content: '';
        display: block;
        padding: 1.5rem 0;
    }

    /* Hero */
    .hero { padding: 4rem 0 3rem; }
    .hero__actions { flex-direction: column; align-items: stretch; }
    .hero__actions .btn { justify-content: center; }

    /* Footer */
    .site-footer__top { grid-template-columns: 1fr; gap: 2rem; }
    .site-footer__bottom { flex-direction: column; align-items: flex-start; }
    .site-footer__legal { gap: 0.875rem; }

    /* Features */
    .features__grid { grid-template-columns: 1fr; }

    /* Stats */
    .stats__grid { grid-template-columns: repeat(2, 1fr); }

    /* News */
    .news-grid { grid-template-columns: 1fr; }
}

/* Small mobile (≤ 480px) */
@media (max-width: 480px) {
    .container { padding: 0 1rem; }
    .stats__grid { grid-template-columns: 1fr; }
    .trusted__logos { gap: 1.5rem; }
    .news-list-page { padding: 2rem 0 4rem; }
    .news-list-page__header { margin-bottom: 2rem; }
    .features { padding: 4rem 0; }
    .news-section { padding: 4rem 0; }
    .cta-banner { padding: 4rem 0; }
    .news-detail-sidebar { flex-direction: column; }
    .news-detail-sidebar__card { min-width: unset; }
}

/* ---- Scroll to top ---- */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 500;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text-muted);
    cursor: pointer;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity var(--transition), transform var(--transition), border-color var(--transition), color var(--transition);
    pointer-events: none;
}
.scroll-top.is-visible {
    opacity: 1;
    transform: none;
    pointer-events: auto;
}
.scroll-top:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* ---- Header scroll effect ---- */
.site-header.is-scrolled {
    background: rgba(14,28,42,0.98);
    box-shadow: 0 1px 24px rgba(0,0,0,0.4);
}

/* ---- Scroll reveal ---- */
.reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.is-visible {
    opacity: 1;
    transform: none;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; }
}