/* ========================================
   admintt — Modern Ad-Tech Intelligence Portal
   ======================================== */

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

:root {
  --color-primary: #0958d9;
  --color-primary-light: #4096ff;
  --color-primary-dark: #0745ab;
  --color-accent: #22d3ee;
  --color-ink: #0f172a;
  --color-ink-soft: #1e293b;
  --color-white: #ffffff;
  --color-gray-50: #f8fafc;
  --color-gray-100: #f1f5f9;
  --color-gray-200: #e2e8f0;
  --color-gray-400: #94a3b8;
  --color-gray-600: #64748b;
  --color-gray-800: #334155;
  --font-stack: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --header-height: 80px;
  --sidebar-width: 300px;
  --content-max: 1280px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 8px 32px rgba(15, 23, 42, 0.1);
  --transition: 0.2s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-stack);
  background: var(--color-white);
  color: var(--color-ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

/* --- Header --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-sm);
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px clamp(16px, 4vw, 40px);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--color-gray-100);
  color: var(--color-gray-600);
  background: var(--color-gray-50);
}

.header-live {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--color-primary);
}

.live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  animation: pulse 1.8s ease-in-out infinite;
}

.header-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 40px);
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-link {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-img {
  height: 36px;
  width: 130px;
  object-fit: contain;
  object-position: left center;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-600);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav-link:hover {
  color: var(--color-ink);
  background: var(--color-gray-100);
}

.nav-link--cta {
  padding: 8px 20px;
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 600;
  border-radius: var(--radius-md);
}

.nav-link--cta:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 1px;
  transition: transform 0.3s, opacity 0.3s;
}

/* --- Masthead --- */
.masthead {
  margin-top: var(--header-height);
  padding: clamp(48px, 7vw, 80px) clamp(16px, 4vw, 40px);
  background: var(--color-gray-50) url('../img/hero-bg.svg') center / cover no-repeat;
  border-bottom: 1px solid var(--color-gray-200);
  position: relative;
  overflow: hidden;
}

.masthead-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  position: relative;
}

.masthead-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  margin-bottom: 16px;
  padding: 6px 14px;
  background: rgba(9, 88, 217, 0.08);
  border-radius: 100px;
}

.masthead-title {
  font-size: clamp(2.25rem, 5.5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  color: var(--color-ink);
}

.masthead-title--accent {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.masthead-deck {
  font-size: clamp(1rem, 1.8vw, 1.1875rem);
  font-weight: 400;
  color: var(--color-gray-600);
  max-width: 600px;
  line-height: 1.65;
  margin-bottom: 24px;
}

.masthead-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.masthead-meta span:not(.meta-sep) {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 6px 14px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: 100px;
  color: var(--color-gray-800);
}

.meta-sep {
  display: none;
}

/* --- Portal Layout --- */
.portal-layout {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: clamp(32px, 5vw, 56px) clamp(16px, 4vw, 40px);
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: clamp(32px, 5vw, 48px);
  align-items: start;
}

.content-column {
  min-width: 0;
}

/* --- Story Articles --- */
.story {
  padding: clamp(24px, 3vw, 32px);
  margin-bottom: clamp(24px, 3vw, 32px);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease, box-shadow var(--transition);
}

.story:hover {
  box-shadow: var(--shadow-md);
}

.story.is-visible {
  opacity: 1;
  transform: translateY(0);
}

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

.story-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.story-number {
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-white);
  background: var(--color-primary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.02em;
}

.story-section {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-gray-600);
}

.story-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(20px, 3vw, 32px);
  align-items: start;
}

.story--reverse .story-body {
  direction: rtl;
}

.story--reverse .story-text,
.story--reverse .story-media {
  direction: ltr;
}

.story-heading {
  font-size: clamp(1.125rem, 2.2vw, 1.375rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--color-ink);
}

.story-excerpt {
  font-size: 0.9375rem;
  color: var(--color-gray-600);
  line-height: 1.65;
  margin-bottom: 16px;
}

/* Pull Quotes */
.pull-quote {
  position: relative;
  margin: 0 0 16px 0;
  padding: 16px 18px 16px 20px;
  background: var(--color-gray-50);
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.pull-quote-mark {
  display: none;
}

.pull-quote p {
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-ink-soft);
}

.pull-quote--inline {
  margin-bottom: 16px;
}

.story-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.story-tags li {
  padding: 5px 12px;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-primary);
  background: rgba(9, 88, 217, 0.08);
  border-radius: 100px;
}

.story-media {
  margin: 0;
}

.story-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-md);
}

.story-caption {
  margin-top: 10px;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-gray-600);
}

/* --- Sidebar --- */
.sidebar {
  position: sticky;
  top: calc(var(--header-height) + 20px);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sidebar-panel {
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--color-ink);
  color: var(--color-white);
}

.sidebar-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.sidebar-badge {
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 3px 8px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 100px;
}

/* Ticker */
.ticker-wrap {
  height: 280px;
  overflow: hidden;
  position: relative;
}

.ticker-wrap::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40px;
  background: linear-gradient(transparent, var(--color-white));
  pointer-events: none;
}

.ticker-track {
  display: flex;
  flex-direction: column;
}

.ticker-track.is-animating {
  animation: tickerScroll 40s linear infinite;
}

.ticker-track.is-paused {
  animation-play-state: paused;
}

.ticker-list {
  flex-shrink: 0;
}

.ticker-item {
  display: flex;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-gray-100);
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--color-gray-800);
  transition: background var(--transition);
}

.ticker-item:hover {
  background: var(--color-gray-50);
}

.ticker-item time {
  flex-shrink: 0;
  font-weight: 700;
  font-size: 0.6875rem;
  letter-spacing: 0.02em;
  color: var(--color-primary);
  padding-top: 2px;
}

/* Stats */
.stat-list {
  padding: 4px 0;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-gray-100);
}

.stat-row:last-child {
  border-bottom: none;
}

.stat-row dt {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-gray-600);
}

.stat-value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-ink);
}

.stat-value--up {
  color: var(--color-primary);
}

/* Sidebar Quote */
.sidebar-quote {
  position: relative;
  margin: 0;
  padding: 20px 16px;
}

.sidebar-quote p {
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.55;
  margin-bottom: 10px;
  color: var(--color-ink-soft);
}

.sidebar-quote cite {
  font-size: 0.6875rem;
  font-weight: 500;
  font-style: normal;
  color: var(--color-gray-600);
}

/* --- Briefs Section --- */
.briefs {
  background: linear-gradient(160deg, var(--color-ink) 0%, var(--color-ink-soft) 100%);
  color: var(--color-white);
  padding: clamp(48px, 7vw, 80px) clamp(16px, 4vw, 40px);
}

.briefs-inner {
  max-width: var(--content-max);
  margin: 0 auto;
}

.section-header {
  margin-bottom: 40px;
}

.section-number {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-accent);
  margin-bottom: 8px;
  padding: 4px 12px;
  background: rgba(34, 211, 238, 0.12);
  border-radius: 100px;
}

.section-title {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.briefs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.brief-card {
  padding: 24px 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
}

.brief-card:hover {
  border-color: var(--color-primary-light);
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-3px);
}

.brief-number {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 14px;
  padding: 4px 10px;
  background: rgba(34, 211, 238, 0.12);
  border-radius: var(--radius-sm);
}

.brief-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.brief-text {
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--color-gray-400);
}

/* --- Subscribe --- */
.subscribe {
  padding: clamp(48px, 7vw, 80px) clamp(16px, 4vw, 40px);
  background: var(--color-gray-50);
}

.subscribe-inner {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 5vw, 64px);
  align-items: start;
}

.subscribe-copy .section-number {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  background: none;
  padding: 0;
}

.subscribe-heading {
  font-size: clamp(1.375rem, 2.5vw, 1.875rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.subscribe-text {
  font-size: 0.9375rem;
  color: var(--color-gray-600);
  line-height: 1.65;
}

.subscribe-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 28px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-ink);
}

.form-input {
  padding: 12px 14px;
  font-family: var(--font-stack);
  font-size: 0.9375rem;
  color: var(--color-ink);
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-input::placeholder {
  color: var(--color-gray-400);
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(9, 88, 217, 0.12);
  background: var(--color-white);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.form-note {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-primary);
  text-align: center;
  min-height: 1.4em;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-family: var(--font-stack);
  font-size: 0.9375rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition), transform 0.15s, box-shadow var(--transition);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 2px 8px rgba(9, 88, 217, 0.25);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(9, 88, 217, 0.3);
}

.btn--full {
  width: 100%;
}

/* --- Footer --- */
.site-footer {
  background: var(--color-ink);
  color: var(--color-white);
  padding: 56px 0 0;
}

.footer-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 40px);
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 48px;
}

.footer-logo {
  height: 32px;
  width: 110px;
  object-fit: contain;
  object-position: left center;
  filter: brightness(0) invert(1);
  margin-bottom: 12px;
}

.footer-tagline {
  font-size: 0.875rem;
  color: var(--color-gray-400);
  line-height: 1.6;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-col-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-gray-400);
  margin-bottom: 14px;
}

.footer-link {
  display: block;
  font-size: 0.875rem;
  color: var(--color-gray-400);
  padding: 4px 0;
  transition: color var(--transition);
}

.footer-link:hover {
  color: var(--color-white);
}

.footer-bottom {
  margin-top: 48px;
  padding: 24px clamp(16px, 4vw, 40px);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: var(--color-gray-600);
}

/* --- Animations --- */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

@keyframes tickerScroll {
  0% { transform: translateY(0); }
  100% { transform: translateY(-50%); }
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .portal-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .sidebar-panel--quote {
    grid-column: 1 / -1;
  }

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

@media (max-width: 768px) {
  :root {
    --header-height: 96px;
  }

  .header-top {
    font-size: 0.625rem;
  }

  .header-edition {
    display: none;
  }

  .site-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-white);
    padding: 16px;
    gap: 4px;
    border-bottom: 1px solid var(--color-gray-200);
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    opacity: 0;
    transition: transform 0.3s, opacity 0.3s;
    pointer-events: none;
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link--cta {
    text-align: center;
    margin-top: 8px;
  }

  .menu-toggle {
    display: flex;
  }

  .menu-toggle.is-active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .menu-toggle.is-active span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.is-active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .story-body {
    grid-template-columns: 1fr;
  }

  .story--reverse .story-body {
    direction: ltr;
  }

  .story-media {
    order: -1;
  }

  .sidebar {
    grid-template-columns: 1fr;
  }

  .ticker-wrap {
    height: 220px;
  }

  .briefs-grid {
    grid-template-columns: 1fr;
  }

  .subscribe-inner {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .footer-links {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .story {
    opacity: 1;
    transform: none;
  }

  .ticker-track.is-animating {
    animation: none;
  }
}