/*
Theme Name: Build for Defense
Theme URI: https://buildfordefense.com
Author: Eric Alborg
Author URI: https://buildfordefense.com
Description: One-page pre-launch landing theme for the book "Build for Defense: How Commercial Companies Win in the Defense Market" by Eric Alborg. Defense-operational aesthetic with email capture.
Version: 3.4
Requires at least: 5.0
Tested up to: 6.7
Requires PHP: 7.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: build-for-defense
*/

/* ============================================
       DESIGN TOKENS
       ============================================ */
    :root {
      --bg: #0A0E14;
      --bg-elev: #11161F;
      --bg-line: #1A2230;
      --ink: #E8E2D5;
      --ink-dim: #9A9485;
      --ink-faint: #5A5648;
      --accent: #C8956D;      /* amber/copper */
      --accent-hot: #D4A47A;
      --signal: #B8442D;      /* alert red, used sparingly */
      --rule: #2A3142;

      --serif: 'Fraunces', Georgia, serif;
      --sans: 'IBM Plex Sans', system-ui, sans-serif;
      --mono: 'IBM Plex Mono', ui-monospace, monospace;
    }

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

    html { scroll-behavior: smooth; }

    body {
      background: var(--bg);
      color: var(--ink);
      font-family: var(--sans);
      font-weight: 300;
      font-size: 17px;
      line-height: 1.55;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      overflow-x: hidden;
    }

    /* ============================================
       SHARED ELEMENTS
       ============================================ */
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 32px;
    }
    @media (max-width: 720px) {
      .container { padding: 0 20px; }
    }

    .eyebrow {
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: var(--accent);
      font-weight: 500;
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }
    .eyebrow::before {
      content: "";
      display: inline-block;
      width: 32px;
      height: 1px;
      background: var(--accent);
    }

    .rule {
      height: 1px;
      background: var(--rule);
      width: 100%;
    }

    .display {
      font-family: var(--serif);
      font-weight: 500;
      font-variation-settings: "opsz" 144;
      letter-spacing: -0.025em;
      line-height: 1.02;
    }

    a { color: var(--accent); text-decoration: none; }
    a:hover { color: var(--accent-hot); }

    /* ============================================
       TOP STRIP
       ============================================ */
    .topstrip {
      border-bottom: 1px solid var(--rule);
      padding: 14px 0;
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--ink-dim);
    }
    .topstrip .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
    }
    .topstrip .brand { color: var(--ink); font-weight: 500; }
    .topstrip .meta { display: flex; gap: 24px; }
    .topstrip .meta span { white-space: nowrap; }
    @media (max-width: 720px) {
      .topstrip .meta span:not(:last-child) { display: none; }
    }

    /* ============================================
       HERO
       ============================================ */
    .hero {
      position: relative;
      padding: 80px 0 100px;
      overflow: hidden;
    }
    /* topographic line pattern */
    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(to right, var(--bg-line) 1px, transparent 1px),
        linear-gradient(to bottom, var(--bg-line) 1px, transparent 1px);
      background-size: 80px 80px;
      opacity: 0.35;
      pointer-events: none;
      -webkit-mask-image: radial-gradient(ellipse at top right, black 0%, transparent 70%);
              mask-image: radial-gradient(ellipse at top right, black 0%, transparent 70%);
    }
    /* corner crosshairs */
    .hero::after {
      content: "";
      position: absolute;
      top: 80px;
      right: 32px;
      width: 90px;
      height: 90px;
      border-top: 1px solid var(--accent);
      border-right: 1px solid var(--accent);
      opacity: 0.6;
      pointer-events: none;
    }

    .hero-grid {
      position: relative;
      display: grid;
      grid-template-columns: 1.4fr 1fr;
      gap: 80px;
      align-items: center;
    }
    @media (max-width: 900px) {
      .hero-grid { grid-template-columns: 1fr; gap: 60px; }
      .hero::after { display: none; }
    }

    .hero h1 {
      font-family: var(--serif);
      font-weight: 500;
      font-size: clamp(48px, 7vw, 88px);
      line-height: 0.98;
      letter-spacing: -0.03em;
      margin-top: 28px;
      margin-bottom: 28px;
    }
    .hero h1 .italic {
      font-style: italic;
      font-weight: 400;
      color: var(--accent);
    }

    .hero .sub {
      font-family: var(--serif);
      font-style: italic;
      font-weight: 400;
      font-size: clamp(20px, 2.2vw, 26px);
      line-height: 1.35;
      color: var(--ink-dim);
      max-width: 560px;
      margin-bottom: 40px;
    }

    .cta-row {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      align-items: center;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 16px 28px;
      font-family: var(--mono);
      font-weight: 500;
      font-size: 13px;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      border: none;
      cursor: pointer;
      transition: all 0.2s ease;
      text-decoration: none;
    }
    .btn-primary {
      background: var(--accent);
      color: var(--bg);
    }
    .btn-primary:hover {
      background: var(--accent-hot);
      color: var(--bg);
      transform: translateY(-1px);
    }
    .btn-ghost {
      background: transparent;
      color: var(--ink);
      border: 1px solid var(--rule);
    }
    .btn-ghost:hover {
      border-color: var(--accent);
      color: var(--accent);
    }
    .btn .arrow {
      display: inline-block;
      transition: transform 0.2s ease;
    }
    .btn:hover .arrow { transform: translateX(4px); }

    .hero-meta {
      margin-top: 36px;
      display: flex;
      gap: 32px;
      flex-wrap: wrap;
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--ink-dim);
    }
    .hero-meta span { display: flex; align-items: center; gap: 8px; }
    .hero-meta span::before {
      content: "";
      width: 6px;
      height: 6px;
      background: var(--accent);
      border-radius: 50%;
    }

    /* ============================================
       BOOK COVER MOCKUP
       ============================================ */
    .book-stage {
      perspective: 1200px;
      display: flex;
      justify-content: center;
      align-items: center;
    }
    .book {
      position: relative;
      width: 280px;
      height: 420px;
      transform-style: preserve-3d;
      transform: rotateY(-18deg) rotateX(4deg);
      box-shadow:
        -20px 30px 60px rgba(0,0,0,0.6),
        -8px 12px 24px rgba(0,0,0,0.4);
    }
    .book-cover {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, #0F1521 0%, #080C13 100%);
      border: 1px solid #2A3142;
      overflow: hidden;
    }
    .cover-art {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      display: block;
    }
    .cover-content {
      position: absolute;
      inset: 0;
      padding: 26px 22px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      z-index: 2;
    }
    .cover-top {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
    }
    .cover-tag {
      font-family: var(--mono);
      font-size: 8px;
      letter-spacing: 0.22em;
      text-transform: uppercase;
      color: var(--accent);
      font-weight: 500;
    }
    .cover-coord {
      font-family: var(--mono);
      font-size: 7px;
      letter-spacing: 0.18em;
      color: var(--ink-faint);
      text-align: right;
      line-height: 1.4;
    }
    .cover-titleblock {
      margin-top: 18px;
    }
    .cover-title {
      font-family: var(--serif);
      font-weight: 600;
      font-variation-settings: "opsz" 144;
      font-size: 46px;
      line-height: 0.9;
      letter-spacing: -0.025em;
      color: var(--ink);
      margin: 0;
    }
    .cover-title em {
      font-style: italic;
      font-weight: 400;
      color: var(--accent);
    }
    .cover-rule-amber {
      width: 36px;
      height: 1px;
      background: var(--accent);
      margin: 14px 0 12px;
    }
    .cover-sub {
      font-family: var(--sans);
      font-weight: 300;
      font-size: 10.5px;
      line-height: 1.45;
      color: var(--ink-dim);
      letter-spacing: 0.015em;
      margin: 0;
      max-width: 180px;
    }
    .cover-bottom {
      font-family: var(--mono);
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: var(--ink);
    }
    .cover-author-name {
      font-size: 11px;
      font-weight: 500;
    }
    .cover-author-pub {
      font-size: 7.5px;
      color: var(--ink-faint);
      margin-top: 5px;
      letter-spacing: 0.15em;
    }
    /* book spine effect */
    .book::before {
      content: "";
      position: absolute;
      left: -10px;
      top: 0;
      bottom: 0;
      width: 10px;
      background: linear-gradient(to right, #0A0E14, #161B26);
      transform: rotateY(90deg) translateZ(5px);
      transform-origin: right;
    }

    /* ============================================
       STAT BAND
       ============================================ */
    .stat-band {
      border-top: 1px solid var(--rule);
      border-bottom: 1px solid var(--rule);
      padding: 50px 0;
      background: linear-gradient(to bottom, var(--bg) 0%, #0C1119 100%);
    }
    .stat-band .container {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 40px;
    }
    @media (max-width: 720px) {
      .stat-band .container { grid-template-columns: 1fr; gap: 32px; }
    }
    .stat {
      border-left: 1px solid var(--rule);
      padding-left: 24px;
    }
    .stat-num {
      font-family: var(--serif);
      font-weight: 500;
      font-size: 56px;
      line-height: 1;
      color: var(--accent);
      letter-spacing: -0.03em;
    }
    .stat-label {
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--ink-dim);
      margin-top: 8px;
    }
    .stat-note {
      font-size: 14px;
      color: var(--ink);
      margin-top: 12px;
      line-height: 1.45;
    }

    /* ============================================
       SECTION SCAFFOLD
       ============================================ */
    section { padding: 100px 0; }
    @media (max-width: 720px) { section { padding: 70px 0; } }

    .section-head {
      max-width: 760px;
      margin-bottom: 60px;
    }
    .section-head h2 {
      font-family: var(--serif);
      font-weight: 500;
      font-size: clamp(36px, 5vw, 56px);
      line-height: 1.05;
      letter-spacing: -0.025em;
      margin-top: 20px;
      margin-bottom: 24px;
    }
    .section-head h2 em {
      font-style: italic;
      font-weight: 400;
      color: var(--accent);
    }
    .section-head p {
      font-size: 19px;
      line-height: 1.55;
      color: var(--ink-dim);
      max-width: 600px;
    }

    /* ============================================
       THE PROBLEM (excerpt)
       ============================================ */
    .excerpt {
      background: var(--bg-elev);
      border-top: 1px solid var(--rule);
      border-bottom: 1px solid var(--rule);
    }
    .excerpt-grid {
      display: grid;
      grid-template-columns: 1fr 1.4fr;
      gap: 80px;
      align-items: center;
    }
    @media (max-width: 900px) {
      .excerpt-grid { grid-template-columns: 1fr; gap: 40px; }
    }
    .excerpt-tag {
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: var(--ink-dim);
      margin-bottom: 16px;
    }
    .excerpt h3 {
      font-family: var(--serif);
      font-weight: 500;
      font-size: clamp(28px, 4vw, 42px);
      line-height: 1.1;
      letter-spacing: -0.02em;
      margin-bottom: 20px;
    }
    .excerpt-body {
      font-family: var(--serif);
      font-weight: 400;
      font-size: 20px;
      line-height: 1.55;
      color: var(--ink);
    }
    .excerpt-body p { margin-bottom: 20px; }
    .excerpt-body p:last-child { margin-bottom: 0; }
    .excerpt-body em {
      font-style: italic;
      color: var(--accent);
    }
    .excerpt-attr {
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.15em;
      text-transform: uppercase;
      color: var(--ink-dim);
      margin-top: 24px;
      padding-top: 20px;
      border-top: 1px solid var(--rule);
    }

    /* ============================================
       WHAT YOU'LL LEARN
       ============================================ */
    .learn-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1px;
      background: var(--rule);
      border: 1px solid var(--rule);
    }
    @media (max-width: 720px) {
      .learn-grid { grid-template-columns: 1fr; }
    }
    .learn-item {
      background: var(--bg);
      padding: 36px 32px;
      transition: background 0.2s ease;
    }
    .learn-item:hover {
      background: var(--bg-elev);
    }
    .learn-num {
      font-family: var(--mono);
      font-size: 12px;
      letter-spacing: 0.15em;
      color: var(--accent);
      margin-bottom: 16px;
    }
    .learn-item h4 {
      font-family: var(--serif);
      font-weight: 500;
      font-size: 22px;
      line-height: 1.2;
      letter-spacing: -0.01em;
      margin-bottom: 12px;
      color: var(--ink);
    }
    .learn-item p {
      font-size: 15px;
      line-height: 1.55;
      color: var(--ink-dim);
    }

    /* ============================================
       FRAMEWORKS
       ============================================ */
    .frameworks {
      background: var(--bg-elev);
      border-top: 1px solid var(--rule);
      border-bottom: 1px solid var(--rule);
    }
    .frame-list {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 40px;
    }
    @media (max-width: 900px) {
      .frame-list { grid-template-columns: 1fr; gap: 32px; }
    }
    .frame {
      border-top: 2px solid var(--accent);
      padding-top: 24px;
    }
    .frame-id {
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.18em;
      color: var(--ink-dim);
      margin-bottom: 10px;
    }
    .frame h4 {
      font-family: var(--serif);
      font-weight: 500;
      font-size: 28px;
      line-height: 1.1;
      letter-spacing: -0.02em;
      margin-bottom: 16px;
    }
    .frame p {
      font-size: 15px;
      line-height: 1.6;
      color: var(--ink-dim);
    }

    /* ============================================
       AUTHOR
       ============================================ */
    .author-grid {
      display: grid;
      grid-template-columns: 1fr 1.6fr;
      gap: 80px;
      align-items: start;
    }
    @media (max-width: 900px) {
      .author-grid { grid-template-columns: 1fr; gap: 40px; }
    }
    .author-photo {
      width: 100%;
      aspect-ratio: 4/5;
      background: var(--bg-elev);
      border: 1px solid var(--rule);
      position: relative;
      overflow: hidden;
    }
    .author-photo::before {
      content: "AUTHOR PHOTO";
      position: absolute;
      inset: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.2em;
      color: var(--ink-faint);
    }
    /* When real photo exists, set background-image on .author-photo and ::before vanishes */
    .author-photo.has-image::before { display: none; }

    .author-body h3 {
      font-family: var(--serif);
      font-weight: 500;
      font-size: clamp(32px, 4vw, 48px);
      line-height: 1.05;
      letter-spacing: -0.025em;
      margin-bottom: 24px;
    }
    .author-body p {
      font-size: 18px;
      line-height: 1.65;
      color: var(--ink);
      margin-bottom: 20px;
    }
    .author-body p:last-of-type { color: var(--ink-dim); }
    .author-creds {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 32px;
      padding-top: 32px;
      border-top: 1px solid var(--rule);
    }
    @media (max-width: 540px) {
      .author-creds { grid-template-columns: 1fr; }
    }
    .cred {
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--ink-dim);
    }
    .cred strong {
      display: block;
      color: var(--ink);
      font-weight: 500;
      font-size: 12px;
      margin-bottom: 4px;
    }

    /* ============================================
       CTA BLOCK
       ============================================ */
    .cta-block {
      background: var(--bg);
      border-top: 1px solid var(--rule);
      position: relative;
      overflow: hidden;
    }
    .cta-block::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(to right, var(--bg-line) 1px, transparent 1px);
      background-size: 80px 80px;
      opacity: 0.3;
      -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 60%);
              mask-image: radial-gradient(ellipse at center, black 0%, transparent 60%);
      pointer-events: none;
    }
    .cta-block .container { position: relative; }
    .cta-card {
      max-width: 720px;
      margin: 0 auto;
      text-align: center;
    }
    .cta-card h2 {
      font-family: var(--serif);
      font-weight: 500;
      font-size: clamp(36px, 5vw, 56px);
      line-height: 1.05;
      letter-spacing: -0.025em;
      margin-bottom: 20px;
    }
    .cta-card h2 em {
      font-style: italic;
      color: var(--accent);
    }
    .cta-card p {
      font-size: 18px;
      line-height: 1.55;
      color: var(--ink-dim);
      margin-bottom: 40px;
    }

    /* form */
    .signup-form {
      display: flex;
      gap: 12px;
      max-width: 520px;
      margin: 0 auto;
      flex-wrap: wrap;
    }
    .signup-form input[type="email"] {
      flex: 1;
      min-width: 240px;
      padding: 16px 20px;
      background: var(--bg-elev);
      border: 1px solid var(--rule);
      color: var(--ink);
      font-family: var(--sans);
      font-size: 15px;
      font-weight: 300;
      transition: border-color 0.2s ease;
    }
    .signup-form input[type="email"]:focus {
      outline: none;
      border-color: var(--accent);
    }
    .signup-form input[type="email"]::placeholder {
      color: var(--ink-faint);
    }
    .signup-form button {
      padding: 16px 28px;
      background: var(--accent);
      color: var(--bg);
      border: none;
      font-family: var(--mono);
      font-weight: 500;
      font-size: 13px;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      cursor: pointer;
      transition: background 0.2s ease;
    }
    .signup-form button:hover { background: var(--accent-hot); }

    .form-note {
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--ink-faint);
      margin-top: 20px;
    }

    .form-success {
      display: none;
      padding: 16px 20px;
      border: 1px solid var(--accent);
      color: var(--accent);
      font-family: var(--mono);
      font-size: 13px;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      margin: 0 auto;
      max-width: 520px;
    }
    .form-success.active { display: block; }
    .signup-form.hidden { display: none; }

    .preorder-link {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      margin-top: 24px;
      font-family: var(--mono);
      font-size: 12px;
      letter-spacing: 0.15em;
      text-transform: uppercase;
      color: var(--ink-dim);
      border-bottom: 1px solid var(--rule);
      padding-bottom: 4px;
    }
    .preorder-link:hover {
      color: var(--accent);
      border-bottom-color: var(--accent);
    }

    /* ============================================
       FOOTER
       ============================================ */
    footer {
      border-top: 1px solid var(--rule);
      padding: 40px 0;
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--ink-faint);
    }
    footer .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
    }
    footer a { color: var(--ink-dim); }
    footer a:hover { color: var(--accent); }

    /* ============================================
       SCROLL REVEAL
       ============================================ */
    .reveal {
      opacity: 0;
      transform: translateY(20px);
      transition: opacity 0.8s ease, transform 0.8s ease;
    }
    .reveal.in {
      opacity: 1;
      transform: translateY(0);
    }

    /* ============================================
       V3 SIMPLIFIED — hero inline signup overrides
       ============================================ */
    .hero { padding: 90px 0 110px; }
    .hero .signup-form { margin: 0; max-width: 460px; }
    .hero .form-success { margin: 0; max-width: 460px; }
    .hero .form-note { text-align: left; }
    .hero-signup-label {
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.16em;
      text-transform: uppercase;
      color: var(--ink-dim);
      margin-bottom: 14px;
    }


    /* V3.1 - cover removed, single-column hero */
    .hero-grid { grid-template-columns: 1fr; }
    .hero-grid > div { max-width: 680px; }