/* ================================================================
   01410.KR — 레트로 PC통신 랜딩페이지 스타일
   90년대 터미널 / 한일 채팅 서비스
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=VT323&display=swap');

/* ── 루트 변수 ── */
:root {
  --green:      #00ff41;
  --green-dim:  #00b32c;
  --green-dark: #003d0d;
  --amber:      #ffb300;
  --amber-dim:  #cc8800;
  --red-retro:  #ff3333;
  --bg:         #000d00;
  --bg2:        #001800;
  --panel:      #000f00;
  --border:     #006600;
  --text:       #00dd33;
  --text-dim:   #007722;
  --jp-color:   #00e5ff;
  --jp-dim:     #006688;
  --font-mono:  'Share Tech Mono', 'Courier New', monospace;
  --font-vt:    'VT323', monospace;
  --glow:       0 0 8px #00ff41, 0 0 20px #00cc2250;
  --glow-amber: 0 0 8px #ffb300, 0 0 20px #ffb30040;
  --glow-jp:    0 0 8px #00e5ff, 0 0 20px #00e5ff30;
}

/* ── 리셋 & 기본 ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
  overflow-x: hidden;
  cursor: crosshair;
}

/* ── 스크롤바 ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #000; }
::-webkit-scrollbar-thumb { background: var(--green-dim); }

/* ── 링크 ── */
a { color: var(--green); text-decoration: none; transition: all 0.2s; }
a:hover { color: var(--amber); text-shadow: var(--glow-amber); }

/* ================================================================
   CRT 효과
   ================================================================ */

/* 매트릭스 캔버스 */
#matrixCanvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  opacity: 0.08;
  pointer-events: none;
}

/* 스캔라인 */
.scanline {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 2px,
    rgba(0, 0, 0, 0.25) 2px,
    rgba(0, 0, 0, 0.25) 4px
  );
  pointer-events: none;
  z-index: 9998;
}

/* CRT 비네팅 */
.crt-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: radial-gradient(
    ellipse at center,
    transparent 60%,
    rgba(0, 0, 0, 0.7) 100%
  );
  pointer-events: none;
  z-index: 9997;
}

/* 화면 깜빡임 */
.screen-flicker {
  position: fixed;
  inset: 0;
  background: rgba(0, 255, 65, 0.02);
  pointer-events: none;
  z-index: 9996;
  animation: flicker 0.15s infinite;
}

@keyframes flicker {
  0%   { opacity: 1; }
  92%  { opacity: 1; }
  93%  { opacity: 0.8; }
  94%  { opacity: 1; }
  98%  { opacity: 1; }
  99%  { opacity: 0.9; }
  100% { opacity: 1; }
}

/* ================================================================
   부팅 화면
   ================================================================ */
#bootScreen {
  position: fixed;
  inset: 0;
  background: #000;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.boot-content {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--green);
  max-width: 600px;
  width: 90%;
}

.boot-line {
  opacity: 0;
  transform: translateX(-10px);
  margin-bottom: 6px;
  transition: all 0.3s ease;
}
.boot-line.visible { opacity: 1; transform: translateX(0); }

.boot-line .ok { color: var(--amber); font-weight: bold; }

.boot-press {
  margin-top: 20px;
  color: var(--amber);
  text-align: center;
  opacity: 0;
  animation: blinkFade 1s infinite;
  font-size: 16px;
}
.boot-press.visible { opacity: 1; }

@keyframes blinkFade {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ================================================================
   메인 콘텐츠
   ================================================================ */
#mainContent {
  position: relative;
  z-index: 10;
  transition: opacity 0.5s ease;
}
#mainContent.hidden { opacity: 0; pointer-events: none; }
#mainContent.visible { opacity: 1; pointer-events: all; }

/* ================================================================
   상단 상태바
   ================================================================ */
.top-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 20px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  text-shadow: var(--glow);
}

.top-bar-center {
  color: var(--amber);
  text-shadow: var(--glow-amber);
  font-family: var(--font-vt);
  font-size: 18px;
  letter-spacing: 2px;
}

.top-bar-right { display: flex; align-items: center; gap: 8px; }
.top-bar-right .blink { color: var(--red-retro); animation: blink 1s step-end infinite; }

/* ================================================================
   히어로 섹션
   ================================================================ */
.hero {
  min-height: calc(100vh - 40px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  background:
    radial-gradient(ellipse 80% 60% at 50% 50%, #002200 0%, transparent 70%),
    var(--bg);
}

.hero-inner {
  max-width: 900px;
  width: 100%;
  text-align: center;
}

/* 로고 */
.ascii-logo {
  margin-bottom: 20px;
}

.logo-domain {
  font-family: var(--font-vt);
  font-size: clamp(64px, 14vw, 140px);
  line-height: 1;
  color: var(--green);
  text-shadow: 0 0 20px #00ff41, 0 0 50px #00cc22, 0 0 80px #00ff4160;
  letter-spacing: 8px;
  animation: logoPulse 4s ease-in-out infinite;
}

.logo-subtitle {
  font-family: var(--font-mono);
  font-size: clamp(10px, 1.5vw, 13px);
  color: var(--text-dim);
  margin-top: 8px;
  letter-spacing: 1px;
}

@keyframes logoPulse {
  0%, 100% { text-shadow: 0 0 20px #00ff41, 0 0 50px #00cc22, 0 0 80px #00ff4160; }
  50%       { text-shadow: 0 0 30px #00ff41, 0 0 70px #00cc22, 0 0 120px #00ff4180; }
}

.hero-divider {
  color: var(--border);
  font-size: 12px;
  margin: 16px 0;
  overflow: hidden;
  text-shadow: none;
}

/* 타이핑 태그라인 */
.hero-tagline {
  margin: 20px 0;
}

.tagline-ko {
  font-family: var(--font-vt);
  font-size: clamp(18px, 3vw, 28px);
  color: var(--amber);
  text-shadow: var(--glow-amber);
  margin-bottom: 8px;
  min-height: 36px;
}

.tagline-jp {
  font-family: var(--font-vt);
  font-size: clamp(16px, 2.5vw, 24px);
  color: var(--jp-color);
  text-shadow: var(--glow-jp);
  min-height: 30px;
}

/* 히어로 설명 */
.hero-desc {
  margin: 24px 0;
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.8;
}

/* CTA 버튼 */
.cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 30px 0;
}

.btn-retro {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-family: var(--font-mono);
  font-size: 14px;
  border: 1px solid;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
}

.btn-retro::before {
  content: '';
  position: absolute;
  inset: 0;
  background: currentColor;
  opacity: 0;
  transition: opacity 0.2s;
}
.btn-retro:hover::before { opacity: 0.08; }

.btn-primary {
  color: var(--bg);
  background: var(--green);
  border-color: var(--green);
  box-shadow: var(--glow);
  font-weight: bold;
}
.btn-primary:hover {
  background: var(--amber);
  border-color: var(--amber);
  color: #000;
  box-shadow: var(--glow-amber);
}

.btn-secondary {
  color: var(--green);
  background: transparent;
  border-color: var(--green-dim);
  box-shadow: none;
}
.btn-secondary:hover {
  border-color: var(--amber);
  color: var(--amber);
  box-shadow: var(--glow-amber);
}

.btn-prefix, .btn-suffix { opacity: 0.6; }

/* 히어로 통계 */
.hero-stats {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  margin-top: 40px;
  padding: 20px;
  border: 1px solid var(--border);
  background: rgba(0, 255, 65, 0.02);
}

.stat-item { text-align: center; }

.stat-num {
  font-family: var(--font-vt);
  font-size: 36px;
  color: var(--amber);
  text-shadow: var(--glow-amber);
  line-height: 1;
}

.stat-label {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 4px;
}

.stat-divider {
  color: var(--border);
  font-size: 24px;
}

/* ================================================================
   섹션 공통
   ================================================================ */
section {
  padding: 60px 20px;
  max-width: 960px;
  margin: 0 auto;
}

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

.section-title {
  font-size: 12px;
  color: var(--green-dim);
  line-height: 1.6;
  text-shadow: var(--glow);
}

/* ================================================================
   기능 카드
   ================================================================ */
.features { max-width: 100%; background: var(--bg2); }
.features > .section-header,
.features > .features-grid { max-width: 960px; margin-left: auto; margin-right: auto; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  padding: 0 20px;
}

.feature-card {
  border: 1px solid var(--border);
  padding: 24px;
  background: rgba(0, 30, 0, 0.5);
  position: relative;
  transition: all 0.3s;
  cursor: default;
}

.feature-card::after {
  content: attr(data-num);
  position: absolute;
  top: -1px;
  right: 12px;
  background: var(--bg2);
  padding: 0 4px;
  font-size: 10px;
  color: var(--text-dim);
}

.feature-card:hover {
  border-color: var(--green);
  box-shadow: 0 0 20px rgba(0, 255, 65, 0.1), inset 0 0 20px rgba(0, 255, 65, 0.03);
  transform: translateY(-2px);
}

.feature-icon {
  font-size: 28px;
  color: var(--amber);
  text-shadow: var(--glow-amber);
  margin-bottom: 8px;
}

.feature-num {
  font-size: 11px;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.feature-title {
  font-family: var(--font-vt);
  font-size: 22px;
  color: var(--green);
  text-shadow: var(--glow);
  margin-bottom: 8px;
}

.feature-title .jp {
  font-size: 16px;
  color: var(--jp-color);
  text-shadow: var(--glow-jp);
}

.feature-divider {
  color: var(--border);
  margin: 10px 0;
  font-size: 12px;
}

.feature-desc {
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.8;
}

.feature-desc .jp {
  color: var(--jp-dim);
  font-size: 11px;
}

.feature-tag {
  display: inline-block;
  margin-top: 14px;
  padding: 2px 8px;
  border: 1px solid var(--green-dim);
  font-size: 10px;
  color: var(--green-dim);
  background: rgba(0, 255, 65, 0.05);
  letter-spacing: 2px;
}

/* ================================================================
   터미널 데모
   ================================================================ */
.terminal-window {
  border: 1px solid var(--border);
  background: #000;
  max-width: 700px;
  margin: 0 auto;
  box-shadow: 0 0 40px rgba(0, 255, 65, 0.1);
}

.terminal-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

.terminal-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.terminal-dot.red    { background: #ff5f57; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green-dot { background: #28c840; }

.terminal-title {
  flex: 1;
  text-align: center;
  font-size: 11px;
  color: var(--text-dim);
}

.terminal-body {
  padding: 16px;
  height: 320px;
  overflow-y: auto;
  font-size: 13px;
  line-height: 1.8;
  /* 스크롤바 감추기 (선택사항) */
  scrollbar-width: thin;
}

.chat-system {
  color: var(--text-dim);
  font-size: 12px;
  font-style: italic;
}

.chat-divider {
  color: var(--border);
  margin: 8px 0;
  font-size: 11px;
}

.chat-msg {
  margin: 8px 0;
  opacity: 0;
  transform: translateX(-6px);
  transition: all 0.4s ease;
}
.chat-msg.show { opacity: 1; transform: translateX(0); }

.chat-msg .nick-ko   { color: var(--amber); font-weight: bold; }
.chat-msg .nick-jp   { color: var(--jp-color); font-weight: bold; }
.chat-msg .msg-text  { color: var(--text); }
.chat-msg .msg-trans { color: var(--text-dim); font-size: 11px; font-style: italic; }
.chat-msg .timestamp { color: var(--border); font-size: 10px; margin-right: 8px; }

/* ================================================================
   접속 방법 (How-to)
   ================================================================ */
.steps-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.step {
  border: 1px solid var(--border);
  padding: 24px 20px;
  text-align: center;
  width: 200px;
  background: rgba(0, 255, 65, 0.02);
  transition: all 0.3s;
}
.step:hover {
  border-color: var(--amber);
  box-shadow: 0 0 20px rgba(255, 179, 0, 0.1);
}

.step-num {
  font-size: 10px;
  color: var(--amber);
  text-shadow: var(--glow-amber);
  letter-spacing: 3px;
  margin-bottom: 12px;
}

.step-icon {
  font-size: 32px;
  color: var(--green);
  text-shadow: var(--glow);
  margin-bottom: 12px;
}

.step-content h3 {
  font-family: var(--font-vt);
  font-size: 20px;
  color: var(--green);
  margin-bottom: 8px;
}

.step-content p {
  font-size: 11px;
  color: var(--text-dim);
  line-height: 1.7;
}

.step-content .jp { color: var(--jp-dim); }

.step-arrow {
  color: var(--border);
  font-size: 20px;
  flex-shrink: 0;
}

/* ================================================================
   다운로드 섹션
   ================================================================ */
.download { background: var(--bg2); max-width: 100%; }
.download > .section-header,
.download > .download-content { max-width: 960px; margin-left: auto; margin-right: auto; }

.download-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 60px;
  flex-wrap: wrap;
  padding: 0 20px;
}

/* 폰 목업 */
.phone-mockup {
  border: 2px solid var(--border);
  border-radius: 20px;
  width: 220px;
  overflow: hidden;
  box-shadow: 0 0 40px rgba(0, 255, 65, 0.15);
  background: #000;
  flex-shrink: 0;
}

.phone-screen {
  padding: 16px;
  min-height: 360px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.phone-status {
  text-align: center;
  font-family: var(--font-vt);
  font-size: 18px;
  color: var(--amber);
  text-shadow: var(--glow-amber);
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}

.phone-chat {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px 0;
}

.ph-msg {
  font-size: 12px;
  padding: 6px 10px;
  border: 1px solid;
  max-width: 80%;
  line-height: 1.5;
}

.ph-msg.left {
  align-self: flex-start;
  border-color: var(--border);
  color: var(--text);
}

.ph-msg.right {
  align-self: flex-end;
  border-color: var(--jp-dim);
  color: var(--jp-color);
}

.phone-input {
  font-size: 11px;
  color: var(--text-dim);
  border: 1px solid var(--border);
  padding: 6px 8px;
}

/* 다운로드 버튼 */
.download-buttons {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-start;
}

.download-desc {
  color: var(--text-dim);
  font-size: 13px;
  line-height: 1.8;
  margin-bottom: 8px;
}

.btn-download {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 24px;
  border: 1px solid var(--green-dim);
  color: var(--green);
  background: rgba(0, 255, 65, 0.03);
  min-width: 260px;
  transition: all 0.2s;
}
.btn-download:hover {
  border-color: var(--amber);
  color: var(--amber);
  box-shadow: var(--glow-amber);
  background: rgba(255, 179, 0, 0.05);
}

.btn-download.btn-web {
  border-color: var(--jp-dim);
  color: var(--jp-color);
}
.btn-download.btn-web:hover {
  border-color: var(--jp-color);
  box-shadow: var(--glow-jp);
}

.dl-icon { font-size: 24px; }

.btn-download small {
  font-size: 10px;
  opacity: 0.6;
  display: block;
}

/* ================================================================
   푸터
   ================================================================ */
.footer {
  border-top: 1px solid var(--border);
  padding: 30px 20px;
  background: #000;
}

.footer-inner {
  max-width: 740px;
  margin: 0 auto;
  text-align: center;
}

.footer-ascii pre {
  font-size: 11px;
  color: var(--text-dim);
  line-height: 1.6;
  display: inline-block;
  text-align: left;
}

.footer-links {
  margin: 16px 0;
  font-size: 11px;
  color: var(--text-dim);
}
.footer-links a { color: var(--text-dim); }
.footer-links a:hover { color: var(--amber); }

.footer-modem {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 11px;
  color: var(--border);
  margin-top: 12px;
}

.modem-light {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
}

/* ================================================================
   키프레임 애니메이션
   ================================================================ */
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

@keyframes scanMove {
  0%   { transform: translateY(-100%); }
  100% { transform: translateY(100vh); }
}

/* 커서 깜빡임 */
.blink { animation: blink 1s step-end infinite; }
.blink-slow { animation: blink 2s step-end infinite; }
.blink-fast { animation: blink 0.5s step-end infinite; }

/* 색상 유틸 */
.green  { color: var(--green); text-shadow: var(--glow); }
.amber  { color: var(--amber); text-shadow: var(--glow-amber); }
.jp     { color: var(--jp-color); }

/* ================================================================
   반응형
   ================================================================ */
@media (max-width: 600px) {
  #asciiArt { font-size: 5px; }
  .hero { padding: 40px 12px; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .stat-divider { display: none; }
  .steps-container { flex-direction: column; }
  .step-arrow { transform: rotate(90deg); }
  .features-grid { grid-template-columns: 1fr; }
  .download-content { flex-direction: column; }
  .btn-download { min-width: unset; width: 100%; }
  .footer-ascii pre { font-size: 9px; }
  .top-bar-center { display: none; }
}