/* ================================================================
   매일테크 — style.css
   Google Fonts: Noto Sans KR (한국어 최적화)
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;600;700&display=swap');

/* ── CSS 변수 ─────────────────────────────────────────────────── */
:root {
  --font-body: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;

  --color-bg:         #f8f9fc;
  --color-surface:    #ffffff;
  --color-border:     #e8eaf0;
  --color-text:       #1a1d2e;
  --color-text-muted: #6b7280;
  --color-text-light: #9ca3af;

  --color-primary:    #4f46e5;
  --color-primary-h:  #4338ca;
  --color-primary-lt: #ede9fe;

  --color-badge-bg:   #f0eeff;
  --color-badge-text: #5b4fcf;

  --shadow-sm:   0 1px 3px rgba(0,0,0,.08);
  --shadow-md:   0 4px 16px rgba(0,0,0,.10);
  --shadow-lg:   0 8px 32px rgba(0,0,0,.13);
  --shadow-hover:0 12px 40px rgba(79,70,229,.18);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;

  --transition: .22s cubic-bezier(.4,0,.2,1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

/* ── 헤더 ─────────────────────────────────────────────────────── */
#site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: 0 1.25rem;
  height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: .55rem;
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}

.brand-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.brand-icon img,
.brand-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.brand:hover .brand-icon {
  transform: scale(1.08) rotate(-3deg);
}

.brand-name {
  font-size: 19px;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -.4px;
}

/* 검색창 */
.search-wrap {
  flex: 1;
  max-width: 420px;
  position: relative;
}

#search-input {
  width: 100%;
  padding: .55rem 1rem .55rem 2.6rem;
  border: 1.5px solid var(--color-border);
  border-radius: 50px;
  font-family: var(--font-body);
  font-size: 14px;
  background: var(--color-bg);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

#search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79,70,229,.12);
  background: #fff;
}

.search-icon {
  position: absolute;
  left: .9rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-light);
  pointer-events: none;
  font-size: 14px;
}

/* ── 히어로 영역 (심플) ────────────────────────────────────────── */
#hero {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1.1rem 1.25rem;
}

.hero-inner {
  max-width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-left {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-date {
  font-size: 13px;
  color: var(--color-text-muted);
  font-weight: 500;
  margin: 0;
  display: flex;
  align-items: center;
  gap: .3rem;
}

.hero-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -.3px;
  margin: 0;
}

.hero-desc {
  font-size: 13px;
  color: var(--color-text-light);
  margin: 0;
  white-space: nowrap;
}

/* ── 필터 바 ──────────────────────────────────────────────────── */
#filter-bar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: .6rem 1.25rem;
  display: flex;
  align-items: center;
  gap: .5rem;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  position: sticky;
  top: 62px;
  z-index: 90;
}

/* ── 날짜 picker ──────────────────────────────────────────────── */
.date-picker-wrap {
  position: relative;
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.date-picker-icon {
  position: absolute;
  left: .75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  font-size: 13px;
  pointer-events: none;
  z-index: 1;
}

#date-picker {
  height: 32px;
  padding: 0 .75rem 0 2.2rem;
  border: 1.5px solid var(--color-border);
  border-radius: 50px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
  background: transparent;
  cursor: pointer;
  outline: none;
  transition: all var(--transition);
  width: 150px;
  -webkit-appearance: none;
  appearance: none;
}

#date-picker::-webkit-calendar-picker-indicator {
  opacity: 0;
  position: absolute;
  right: 0;
  width: 100%;
  cursor: pointer;
}

#date-picker:focus,
#date-picker.active {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-lt);
}

#filter-bar::-webkit-scrollbar { display: none; }

.filter-btn {
  flex-shrink: 0;
  padding: .32rem .9rem;
  border: 1.5px solid var(--color-border);
  border-radius: 50px;
  background: transparent;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-lt);
}

.filter-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.filter-divider {
  width: 1px;
  height: 20px;
  background: var(--color-border);
  flex-shrink: 0;
}

/* ── 메인 컨텐츠 ──────────────────────────────────────────────── */
#main-content {
  max-width: 100%;
  margin: 0 auto;
  padding: 1.75rem 1.25rem 3rem;
}

/* 상태 표시 */
#articles-status {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
  font-weight: 500;
}

/* ── 카드 그리드 ──────────────────────────────────────────────── */
#articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.35rem;
}

/* ── 뉴스 카드 ────────────────────────────────────────────────── */
.article-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 1.65rem;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
  gap: .85rem;
  animation: cardIn .4s ease both;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
}

.card-badge {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .3px;
  padding: .2rem .7rem;
  border-radius: 50px;
  background: var(--color-badge-bg);
  color: var(--color-badge-text);
  text-transform: none;
}

.card-time {
  font-size: 12.5px;
  color: var(--color-text-light);
  white-space: nowrap;
}

.card-title {
  font-size: 17.5px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--color-text);
  letter-spacing: -.25px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-summary {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}


/* 카테고리별 뱃지 색상 */
.badge-ai    { background: #eff6ff; color: #2563eb; }
.badge-web   { background: #f0fdf4; color: #16a34a; }
.badge-mobile{ background: #fff7ed; color: #ea580c; }
.badge-cloud { background: #f0f9ff; color: #0284c7; }
.badge-security{ background: #fef2f2; color: #dc2626; }
.badge-startup { background: #fdf4ff; color: #9333ea; }
.badge-opensource{ background: #f8fafc; color: #475569; }
.badge-hardware{ background: #fefce8; color: #ca8a04; }

/* ── 로딩 스피너 ──────────────────────────────────────────────── */
#load-trigger {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2.5rem 0 1rem;
  min-height: 80px;
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

#load-end-msg {
  text-align: center;
  padding: 2rem 0 1rem;
  color: var(--color-text-light);
  font-size: 13px;
  display: none;
}

/* 비어있을 때 */
#empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 5rem 2rem;
  color: var(--color-text-muted);
}

#empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: .4;
}

#empty-state p { font-size: 15px; }

/* ── 모달 ─────────────────────────────────────────────────────── */
#article-modal .modal-dialog {
  max-width: 740px;
}

#article-modal .modal-content {
  border: none;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

#article-modal .modal-header {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  border: none;
  padding: 1.75rem 2rem 1.5rem;
  position: relative;
}

#article-modal .modal-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
  letter-spacing: -.3px;
  padding-right: 2rem;
}

#article-modal .btn-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  filter: brightness(0) invert(1);
  opacity: .8;
}

.modal-meta-row {
  margin-top: .85rem;
  flex-wrap: nowrap !important;
  gap: .5rem;
}

.modal-article-meta {
  display: flex;
  align-items: center;
  gap: .5rem;
  flex-wrap: nowrap !important;
  min-width: 0;
  flex: 1 1 auto;
  overflow: hidden;
  margin: 0;
}

.modal-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 28px;
  font-size: 12px;
  font-weight: 600;
  padding: 0 .75rem;
  border-radius: 50px;
  background: rgba(255,255,255,.2);
  color: #fff;
  border: 1px solid rgba(255,255,255,.25);
  box-sizing: border-box;
  line-height: 1;
  flex-shrink: 0;
  white-space: nowrap;
}

.modal-date {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  color: rgba(255,255,255,.8);
  line-height: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

#article-modal .modal-body {
  padding: 2rem;
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-text);
}

#article-modal .modal-body p {
  margin-bottom: 1.25rem;
}

#article-modal .modal-body h2 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-text);
  margin: 2rem 0 .9rem;
  padding-bottom: .4rem;
  border-bottom: 1px solid var(--color-border);
  letter-spacing: -.3px;
}

#article-modal .modal-body h3 {
  font-size: 1.18rem;
  font-weight: 700;
  color: #1e1b4b;
  margin: 1.75rem 0 .75rem;
  letter-spacing: -.2px;
}

#article-modal .modal-body h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 1.4rem 0 .5rem;
}

#article-modal .modal-body ul,
#article-modal .modal-body ol {
  margin: .6rem 0 1.25rem 1.25rem;
  padding-left: .5rem;
}

#article-modal .modal-body li {
  margin-bottom: .5rem;
  line-height: 1.75;
}

#article-modal .modal-body strong {
  font-weight: 700;
  color: #111827;
}

#article-modal .modal-body code {
  background: #f1f5f9;
  color: var(--color-primary);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: .88em;
  font-family: monospace;
}

#article-modal .modal-body p:last-child { margin-bottom: 0; }

/* 본문 하단 해시태그 영역 */
.article-hashtags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px dashed var(--color-border);
}

.article-hashtag {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-primary);
  background: #eef2ff;
  padding: .25rem .65rem;
  border-radius: 50px;
  line-height: 1.4;
}

/* 모달 헤더 링크 복사 버튼 */
.btn-copy-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 28px;
  gap: 5px;
  padding: 0 .75rem;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 600;
  background: rgba(255, 255, 255, .2);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .35);
  cursor: pointer;
  backdrop-filter: blur(4px);
  transition: all .2s ease;
  box-sizing: border-box;
  line-height: 1;
  flex-shrink: 0;
  white-space: nowrap;
}

.btn-copy-link:hover {
  background: rgba(255, 255, 255, .32);
  border-color: rgba(255, 255, 255, .6);
  transform: translateY(-1px);
}

.btn-copy-link.copied {
  background: #10b981 !important;
  border-color: #10b981 !important;
  color: #fff !important;
}



/* 모달 로딩 */
#modal-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 3rem 2rem;
  color: var(--color-text-muted);
  font-size: 14px;
}

/* ── 복사 완료 토스트 ───────────────────────────────────────── */
.copy-toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(15, 23, 42, 0.92);
  color: #fff;
  padding: .75rem 1.4rem;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.28);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  z-index: 1070;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease, transform .25s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  gap: 8px;
}

.copy-toast i {
  color: #10b981;
  font-size: 15px;
}

.copy-toast.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

/* ── 스크롤바 커스터마이즈 ────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #c4c9d6; }

/* ── 오늘의 키워드 섹션 ──────────────────────────────────────── */
#keywords-section {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

/* 외부 컨테이너: 최대폭 제한 + 버튼 포함 */
#keywords-outer {
  max-width: 100%;
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  gap: .5rem;
  position: relative;
}

/* 스크롤 가능 영역 */
#keywords-wrap {
  flex: 1;
  padding: .75rem 0;
  display: flex;
  align-items: center;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  scroll-behavior: smooth;
  user-select: none;
  -webkit-user-select: none;
  cursor: grab;
}

#keywords-wrap::-webkit-scrollbar { display: none; }

/* 좌우 스크롤 버튼 */
.kw-scroll-btn {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border: 1.5px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
  z-index: 1;
}

.kw-scroll-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-lt);
}

.kw-scroll-btn:disabled {
  opacity: .3;
  cursor: default;
  pointer-events: none;
}

.keywords-label {
  flex-shrink: 0;
  font-size: 13px;
  font-weight: 800;
  color: #e11d48;
  letter-spacing: -.2px;
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  white-space: nowrap;
  background: #fff1f2;
  border: 1px solid #fecdd3;
  padding: .28rem .75rem;
  border-radius: 50px;
}

.keywords-label .bi-fire {
  font-size: 14px;
  color: #f43f5e;
}

#keywords-list {
  display: flex;
  align-items: center;
  gap: .45rem;
  flex-wrap: nowrap;
}

.keyword-chip {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .28rem .75rem;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition);
  animation: chipIn .35s ease both;
  flex-shrink: 0;
  user-select: none;
}

.keyword-chip:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-lt);
  transform: translateY(-1px);
}

.keyword-chip.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(79,70,229,.3);
}

.keyword-chip .chip-count {
  font-size: 10px;
  opacity: .65;
  font-weight: 400;
}

@keyframes chipIn {
  from { opacity: 0; transform: scale(.85) translateY(4px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

/* 스켈레톤 로딩 */
.keyword-skeleton {
  display: inline-block;
  height: 28px;
  border-radius: 50px;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  flex-shrink: 0;
}

.keyword-skeleton:nth-child(1) { width: 60px; }
.keyword-skeleton:nth-child(2) { width: 80px; animation-delay: .1s; }
.keyword-skeleton:nth-child(3) { width: 50px; animation-delay: .2s; }
.keyword-skeleton:nth-child(4) { width: 90px; animation-delay: .3s; }
.keyword-skeleton:nth-child(5) { width: 65px; animation-delay: .4s; }

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── 반응형 ───────────────────────────────────────────────────── */
@media (max-width: 640px) {
  #site-header { padding: 0 1rem; height: 56px; }
  .brand-name { font-size: 16px; }
  #filter-bar { top: 56px; padding: .5rem 1rem; }
  #main-content { padding: 1.25rem 1rem 2.5rem; }
  /* 모바일: 한 줄에 카드 1개씩 시원하게 표시 */
  #articles-grid { grid-template-columns: 1fr; gap: 1rem; }
  .article-card { padding: 1.25rem; }
  .card-title { font-size: 15px; }
  #article-modal .modal-header { padding: 1.25rem 1.25rem 1rem; }
  #article-modal .modal-title { font-size: 1.1rem; }
  /* 모바일 모달 헤더: 링크 복사 버튼이 밀리지 않도록 최적화 */
  .modal-meta-row { gap: .4rem; }
  .modal-article-meta { gap: .4rem; }
  .modal-date-year { display: none; } /* 연도 생략으로 공간 확보 */
  .modal-badge { height: 26px; padding: 0 .6rem; font-size: 11px; }
  .modal-date { font-size: 11px; }
  .btn-copy-link { height: 26px; padding: 0 .6rem; font-size: 11px; gap: 3px; }
  /* 모바일 키워드 영역 공간 극대화 */
  .kw-scroll-btn { display: none !important; }
  #keywords-outer { padding: 0 .75rem; gap: .45rem; }
  .keywords-label { padding: .24rem .55rem; border-radius: 50px; }
  .kw-label-text { display: none; }
}

@media (max-width: 380px) {
  #article-modal .modal-header { padding: 1rem .85rem .75rem; }
  .modal-badge { padding: 0 .5rem; font-size: 10.5px; }
  .modal-date { font-size: 10.5px; }
  .btn-copy-link { padding: 0 .45rem; font-size: 10.5px; }
}

/* ── 토스트 알림 ──────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: 4.5rem;
  right: 1.5rem;
  z-index: 9999;
  pointer-events: none;
}
.toast {
  pointer-events: auto;
}

/* ── 페이드 오버레이 ──────────────────────────────────────────── */
.modal-backdrop { backdrop-filter: blur(3px); }

/* ── 검색 하이라이트 ─────────────────────────────────────────── */
mark {
  background: #fef9c3;
  color: inherit;
  padding: 0 2px;
  border-radius: 2px;
}

/* ── 상단으로 버튼 ──────────────────────────────────────────── */
#scroll-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  border: none;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--transition), transform var(--transition);
  z-index: 200;
}

#scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
}

#scroll-top:hover {
  background: var(--color-primary-h);
  box-shadow: var(--shadow-lg);
}