/* ═══════════════════════════════════════════════════════
   Projects Page Styles: Phượng Hoàng Design System
   Matches index.html: white/sage/navy/green palette
   Flow-based layout, no absolute positioning, no dark sections
   Structure: Hero(+Stats) → Sectors → Filters → Project Grid → Support Strip → CTA
   ═══════════════════════════════════════════════════════ */

/* ═══════════ HERO: Clean split, flow-based, stats overlap
   First section: clears chrome (top bar + fixed header) ═══════════ */
.ph-proj-hero {
  /* Cap 2.75rem (44px) = chuẩn chung của site (news/certificates/phong hero):
     68 + 44 = 112px từ header; cap cũ 3rem (48px) gây dư 4px trên viewport rộng */
  padding: calc(var(--ph-header-h) + clamp(2rem, 3.5vw, 2.75rem)) 0 clamp(2rem, 3vw, 4rem);
  position: relative;
  overflow: hidden;
  background: var(--ph-bg-primary);
}

/* Subtle sage ambient: understated, matching index.html hero language */
.ph-proj-hero::before {
  content: '';
  position: absolute;
  top: -10%;
  right: -5%;
  width: 55%;
  height: 110%;
  background:
    radial-gradient(ellipse at 65% 35%, rgba(29,139,44,.025), transparent 50%),
    radial-gradient(ellipse at 80% 60%, rgba(29,139,44,.015), transparent 45%);
  pointer-events: none;
  z-index: 0;
}

/* Grid: content left, visual right: matching bp-hero-grid pattern.
   align-items: start -> badge/title/desc top-align với mép trên ảnh
   (center cũ khiến text tụt xuống giữa cột ảnh cao hơn) */
.ph-proj-hero-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: start;
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--ph-space-md);
}

/* ── Left content ── */
.ph-proj-hero-content {
  max-width: 520px;
}

/* Eyebrow badge */
.ph-proj-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: var(--ph-accent-subtle);
  color: var(--ph-accent);
  padding: .3rem 1rem;
  border-radius: 99px;
  font-size: .6875rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  font-family: var(--ph-font-body);
}
.ph-proj-hero-badge-dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--ph-accent);
}

/* H1: matching bp-hero-title scale */
.ph-proj-hero-title {
  font: var(--ph-text-h1);
  color: var(--ph-text-primary);
  margin: 0 0 1rem;
}

.ph-proj-hero-desc {
  font: var(--ph-text-body-lg);
  color: var(--ph-text-secondary);
  margin: 0 0 1.75rem;
  max-width: 460px;
}

/* ── Right visual: building image, no overlay, no filter ── */
.ph-proj-hero-visual {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
}
/* Hero image: natural colors, no shadow/blur/overlay/filter */
.ph-proj-hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  border-radius: var(--ph-radius-lg);
}

/* ═══════════ STATS CARD: Single row, overlaps hero visual bottom ═══════════ */
.ph-proj-stats-card {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: min(960px, 82%);
  margin: -2.75rem auto 0;
  background: var(--ph-surface-primary);
  border: 1px solid var(--ph-border-default);
  border-radius: 20px;
  padding: 0.5rem 2rem;
  box-shadow: 0 2px 18px rgba(29,139,44,.05);
  position: relative;
  z-index: 2;
  margin-top: -85px;
  margin-left: 17%;
}
.ph-proj-stat {
  text-align: center;
  padding: .25rem .75rem;
  position: relative;
  min-width: 0;
}
/* Light vertical dividers between stat items */
.ph-proj-stat + .ph-proj-stat::before {
  content: '';
  position: absolute;
  left: 0;
  top: 15%;
  height: 70%;
  width: 1px;
  background: var(--ph-divider);
}
.ph-proj-stat-value {
  font-family: var(--ph-font-display);
  font-size: clamp(1.5rem, 2.2vw, 1.875rem);
  font-weight: 800;
  color: var(--ph-accent);
  line-height: 1;
  display: block;
  margin-bottom: .4rem;
}
.ph-proj-stat-label {
  font-size: .8125rem;
  font-weight: 500;
  color: var(--ph-text-secondary);
  line-height: 1.4;
}

/* ═══════════ SECTORS: Left-anchored editorial heading + compact horizontal cards ═══════════ */
.ph-proj-sectors {
  padding: clamp(2.5rem, 5vw, 4rem) 0;
  background: var(--ph-section-alt-bg);
}

/* Header: left-aligned, matching hero text axis */
.ph-proj-sectors-header {
  text-align: left;
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}

/* Accent green line above title: matching bp-section-header .bp-section-title::before */
.ph-proj-sectors-header .bp-section-title::before {
  content: '';
  display: block;
  width: 32px;
  height: 2px;
  background: var(--ph-accent);
  margin-bottom: var(--ph-space-sm);
  border-radius: 1px;
  opacity: 0.6;
}

.ph-proj-sectors-header .bp-section-title {
  font: var(--ph-text-h2);
  color: var(--ph-text-primary);
  margin-bottom: .5rem;
}

.ph-proj-sectors-subtitle {
  font: var(--ph-text-body);
  color: var(--ph-text-secondary);
  max-width: 560px;
}

/* Grid: 3 equal columns, full container width */
.ph-proj-sectors-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

/* Sector item: horizontal row, compact, understated editorial feel */
.ph-proj-sector-card {
  display: flex;
  align-items: center;
  gap: .8rem;
  padding: .85rem 1.05rem;
  background: var(--ph-surface-primary);
  border: 1px solid var(--ph-border-default);
  border-radius: var(--ph-radius-md);
  cursor: pointer;
  transition: border-color var(--ph-duration-fast) var(--ph-ease-out),
              transform var(--ph-duration-fast) var(--ph-ease-out),
              box-shadow var(--ph-duration-fast) var(--ph-ease-out),
              background var(--ph-duration-fast) var(--ph-ease-out);
}

.ph-proj-sector-card:hover {
  border-color: var(--ph-accent);
  transform: translateY(-1px);
  box-shadow: 0 2px 12px rgba(29,139,44,.05);
}

.ph-proj-sector-card.active {
  background: var(--ph-accent);
  border-color: var(--ph-accent);
  box-shadow: 0 2px 12px rgba(29,139,44,.10);
}

/* Icon: small, contained */
.ph-proj-sector-card-icon {
  width: 34px; height: 34px;
  min-width: 34px;
  border-radius: 8px;
  background: var(--ph-accent-subtle);
  color: var(--ph-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--ph-duration-fast) var(--ph-ease-out),
              color var(--ph-duration-fast) var(--ph-ease-out);
}

.ph-proj-sector-card-icon svg {
  width: 18px; height: 18px;
}

.ph-proj-sector-card.active .ph-proj-sector-card-icon {
  background: rgba(255,255,255,.20);
  color: #fff;
}

/* Body: title + description, flex-grows to fill space */
.ph-proj-sector-card-body {
  flex: 1;
  min-width: 0;
}

.ph-proj-sector-card-body h3 {
  font-family: var(--ph-font-display);
  font-size: .9375rem;
  font-weight: 600;
  color: var(--ph-text-primary);
  margin: 0 0 .15rem;
  line-height: 1.3;
}

.ph-proj-sector-card.active .ph-proj-sector-card-body h3 { color: #fff; }

.ph-proj-sector-card-body p {
  font: var(--ph-text-caption);
  color: var(--ph-text-secondary);
  margin: 0;
  line-height: 1.4;
}

.ph-proj-sector-card.active .ph-proj-sector-card-body p { color: rgba(255,255,255,.82); }

/* Arrow chevron: subtle, right-aligned */
.ph-proj-sector-card-arrow {
  color: var(--ph-accent);
  opacity: 0.40;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  transition: opacity var(--ph-duration-fast) var(--ph-ease-out),
              transform var(--ph-duration-fast) var(--ph-ease-out);
}

.ph-proj-sector-card:hover .ph-proj-sector-card-arrow {
  opacity: 0.75;
  transform: translateX(1.5px);
}

.ph-proj-sector-card.active .ph-proj-sector-card-arrow {
  color: #fff;
  opacity: .70;
}

/* ═══════════ FILTER PILLS ═══════════ */
.ph-proj-list-header {
  text-align: left;
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}

.ph-proj-list-header .bp-section-title::before {
  content: '';
  display: block;
  width: 32px;
  height: 2px;
  background: var(--ph-accent);
  margin-bottom: var(--ph-space-sm);
  border-radius: 1px;
  opacity: 0.6;
}

.ph-proj-list-header .bp-section-title {
  font: var(--ph-text-h2);
  color: var(--ph-text-primary);
  margin-bottom: .5rem;
}

.ph-proj-list-header .ph-proj-sectors-subtitle {
  font: var(--ph-text-body);
  color: var(--ph-text-secondary);
  max-width: 560px;
}

.ph-proj-filters {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 1.5rem;
  justify-content: flex-start;
}
.ph-proj-filter-btn {
  min-height: 44px;
  padding: .5rem 1.15rem;
  border: 1px solid var(--ph-border-default);
  border-radius: 99px;
  background: var(--ph-surface-primary);
  color: var(--ph-text-primary);
  font-size: .8125rem;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--ph-font-body);
  transition: border-color var(--ph-duration-fast) var(--ph-ease-out),
              background var(--ph-duration-fast) var(--ph-ease-out),
              color var(--ph-duration-fast) var(--ph-ease-out);
}
.ph-proj-filter-btn:hover {
  border-color: var(--ph-accent);
  color: var(--ph-accent);
}
.ph-proj-filter-btn.active {
  background: var(--ph-accent);
  color: var(--ph-text-on-accent);
  border-color: var(--ph-accent);
}

/* ═══════════ PROJECT GRID: Clean background, matching design system ═══════════ */
#ph-proj-list {
  padding: clamp(2.5rem, 5vw, 4rem) 0;
  background: var(--ph-bg-primary);
}

.ph-proj-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

/* ── Project card: clean, light, green-tinted shadows ── */
.ph-proj-card {
  display: flex;
  flex-direction: column;
  background: var(--ph-surface-primary);
  border: 1px solid var(--ph-border-default);
  border-radius: var(--ph-radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 1px 4px rgba(29,139,44,.05);
  transition: transform var(--ph-duration-normal) var(--ph-ease-out),
              box-shadow var(--ph-duration-normal) var(--ph-ease-out),
              border-color var(--ph-duration-fast) var(--ph-ease-out);
}
.ph-proj-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(29,139,44,.10);
  border-color: var(--ph-accent);
}

/* Card image: 16:10, clean, NO background, NO overlay, NO filter */
.ph-proj-card-img {
  aspect-ratio: 16 / 10;
  background: transparent;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.ph-proj-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform var(--ph-duration-slow) var(--ph-ease-out);
}
.ph-proj-card:hover .ph-proj-card-img img { transform: scale(1.03); }

/* Card body */
.ph-proj-card-body {
  padding: 1.15rem 1.25rem 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.ph-proj-card-tag {
  display: inline-flex;
  align-self: flex-start;
  background: var(--ph-accent-subtle);
  color: var(--ph-accent);
  padding: .18rem .65rem;
  border-radius: 5px;
  font-size: .6875rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: .55rem;
}
.ph-proj-card-title {
  font-family: var(--ph-font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--ph-text-primary);
  margin: 0 0 .35rem;
  line-height: 1.3;
}
.ph-proj-card-desc {
  font: var(--ph-text-caption);
  color: var(--ph-text-secondary);
  margin: 0 0 .65rem;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.ph-proj-card-meta {
  display: flex;
  gap: .5rem;
  font-size: .75rem;
  color: var(--ph-text-muted);
  font-family: var(--ph-font-mono);
  margin-bottom: .65rem;
}
.ph-proj-card-meta span { white-space: nowrap; }
.ph-proj-card-link {
  margin-top: auto;
  font-size: .8125rem;
  font-weight: 600;
  color: var(--ph-accent);
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  transition: gap var(--ph-duration-fast) var(--ph-ease-out);
  text-decoration: none;
}
.ph-proj-card:hover .ph-proj-card-link { gap: .4rem; }
.ph-proj-card-link svg { transition: transform var(--ph-duration-fast); }
.ph-proj-card:hover .ph-proj-card-link svg { transform: translateX(2px); }

/* ── No Results ── */
.ph-proj-no-results {
  display: none;
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--ph-text-muted);
  font-size: 1rem;
  grid-column: 1 / -1;
}

/* ═══════════ SUPPORT / TRUST STRIP ═══════════ */
.ph-proj-support-strip {
  padding: clamp(2.5rem, 5vw, 4rem) 0;
  background: var(--ph-bg-primary);
  border-top: 1px solid var(--ph-divider);
}
.ph-proj-support-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}
.ph-proj-support-item {
  text-align: center;
  padding: .5rem;
}
.ph-proj-support-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: var(--ph-accent-subtle);
  color: var(--ph-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto .65rem;
}
.ph-proj-support-item h4 {
  font-family: var(--ph-font-display);
  font-size: .875rem;
  font-weight: 600;
  color: var(--ph-text-primary);
  margin-bottom: .25rem;
}
.ph-proj-support-item p {
  font: var(--ph-text-caption);
  color: var(--ph-text-secondary);
  margin: 0;
}

/* ═══════════ CTA SECTION ═══════════ */
.ph-proj-cta-sec {
  padding: clamp(2.5rem, 5vw, 4rem) 0;
  background: var(--ph-bg-primary);
  position: relative;
  overflow: hidden;
}
.ph-proj-cta-sec::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 35% 50%, rgba(29,139,44,.03), transparent 55%),
    radial-gradient(ellipse at 65% 40%, rgba(29,139,44,.02), transparent 50%);
  pointer-events: none;
}
.ph-proj-cta-wrap {
  text-align: center;
  position: relative;
  z-index: 1;
}
.ph-proj-cta-head {
  font: var(--ph-text-h2);
  color: var(--ph-text-primary);
  margin-bottom: .75rem;
}
.ph-proj-cta-desc {
  font: var(--ph-text-body);
  color: var(--ph-text-secondary);
  margin-bottom: 1.5rem;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.ph-proj-cta-sec .bp-btn-magnetic {
  background: var(--ph-accent);
  color: var(--ph-text-on-accent);
  border: none;
  padding: .8rem 2rem;
  font-size: .9375rem;
  font-weight: 600;
  border-radius: var(--ph-radius-md);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--ph-font-body);
  box-shadow: 0 2px 14px rgba(29,139,44,.16);
  transition: filter var(--ph-duration-fast) var(--ph-ease-out),
              transform var(--ph-duration-fast) var(--ph-ease-out);
}
.ph-proj-cta-sec .bp-btn-magnetic:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}
.ph-proj-cta-sec .ph-cta-sub {
  color: var(--ph-text-muted);
  margin-top: .75rem;
}
.ph-proj-cta-sec .ph-cta-sub a {
  color: var(--ph-accent);
}

/* ── Shared ── */
.ph-cta-sub { margin-top: .75rem; color: var(--ph-text-muted); font-size: .875rem; }
.ph-cta-sub a { color: var(--ph-accent); }

/* ═══════════ RESPONSIVE ═══════════ */

/* Implementation process: 5-step editorial flow */
.ph-proj-process { padding: var(--bp-section-pad, 4.5rem 0); }
.ph-proj-process-list {
  list-style: none;
  margin: 2.25rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  counter-reset: none;
}
.ph-proj-process-step {
  position: relative;
  background: var(--ph-surface-primary, #fff);
  border: 1px solid var(--ph-border-subtle, #e3ebe4);
  border-radius: var(--ph-radius-lg, 16px);
  padding: 1.4rem 1.25rem 1.35rem;
  box-shadow: 0 1px 2px rgba(11, 25, 41, .04);
  transition: transform var(--ph-duration-fast, .2s) var(--ph-ease-out, ease), box-shadow var(--ph-duration-fast, .2s) var(--ph-ease-out, ease);
}
.ph-proj-process-step:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(11, 25, 41, .08);
}
.ph-proj-process-step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -1rem;
  width: 1rem;
  height: 1px;
  background: var(--ph-accent, #1d8b2c);
  opacity: .45;
}
.ph-proj-process-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.25rem;
  height: 2.25rem;
  padding: 0 .5rem;
  border-radius: 99px;
  background: var(--ph-accent-subtle, #e5f2e8);
  color: var(--ph-accent, #1d8b2c);
  font-family: var(--ph-font-mono, monospace);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .4px;
  margin-bottom: .9rem;
}
.ph-proj-process-body h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ph-text-primary, #0b1929);
  margin: 0 0 .4rem;
  letter-spacing: .1px;
}
.ph-proj-process-body p {
  font-size: .83rem;
  line-height: 1.55;
  color: var(--ph-text-muted, #5a6b7a);
  margin: 0;
}
@media (max-width: 1200px) {
  .ph-proj-process-list { grid-template-columns: repeat(3, 1fr); gap: 1.1rem; }
  .ph-proj-process-step:not(:last-child)::after { display: none; }
}
@media (max-width: 767px) {
  .ph-proj-process-list { grid-template-columns: 1fr; gap: .9rem; margin-top: 1.75rem; }
  .ph-proj-process-step { padding: 1.15rem 1.1rem; }
}

@media (max-width: 1200px) {
  .ph-proj-hero-inner { gap: 2rem; }
  .ph-proj-stats-card { max-width: min(860px, 88%); }
}

@media (max-width: 1024px) {
  .ph-proj-hero-inner {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
  .ph-proj-hero-visual { min-height: 300px; }
  .ph-proj-stats-card {
    max-width: min(100%, calc(100% - 2rem));
    margin: -2rem auto 0;
    padding: 1.25rem 1.5rem;
  }
  .ph-proj-stat-value { font-size: 1.5rem; }
  .ph-proj-stat-label { font-size: .75rem; }
  .ph-proj-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
  .ph-proj-sectors-grid { gap: .85rem; }
  .ph-proj-sector-card { padding: .75rem .9rem; }
  .ph-proj-support-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
}

@media (max-width: 767px) {
  /* Header stays FIXED at all widths: clear it with the real header token */
  .ph-proj-hero { padding-top: calc(var(--ph-header-h) + clamp(1.5rem, 4vw, 2rem)); }
  .ph-proj-hero-inner {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    padding: 0 1.25rem;
  }
  .ph-proj-hero-content { max-width: 100%; }
  .ph-proj-hero-visual {
    min-height: auto;
    order: -1;
  }
  .ph-proj-hero-visual img {
    border-radius: var(--ph-radius-md);
    max-height: 280px;
    width: 100%;
  }
  .ph-proj-hero-title { font-size: clamp(1.75rem, 6vw, 2.25rem); }

  /* Stats: 2x2 on mobile, no negative margin (stacked layout) */
  .ph-proj-stats-card {
    grid-template-columns: repeat(2, 1fr);
    gap: .75rem;
    margin: 1rem 1.25rem 0;
    max-width: calc(100% - 2.5rem);
    padding: 1.25rem;
  }
  .ph-proj-stat + .ph-proj-stat::before { display: none; }
  .ph-proj-stat:nth-child(odd)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 10%;
    height: 80%;
    width: 1px;
    background: var(--ph-divider);
  }

  .ph-proj-stat-value { font-size: 1.35rem; }
  .ph-proj-stat-label { font-size: .75rem; }
  .ph-proj-sectors-grid { grid-template-columns: 1fr; gap: .75rem; }
  .ph-proj-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .ph-proj-support-grid { grid-template-columns: repeat(2, 1fr); gap: .75rem; }
}

@media (max-width: 480px) {
  .ph-proj-stats-card {
    grid-template-columns: repeat(2, 1fr);
    padding: 1rem;
  }
  .ph-proj-grid { grid-template-columns: 1fr; gap: 1rem; }
  .ph-proj-card-body { padding: 1rem 1.1rem 1.15rem; }
  .ph-proj-support-grid { grid-template-columns: 1fr; gap: .5rem; }
  .ph-proj-filters {
    flex-wrap: nowrap;
    overflow-x: auto;
    justify-content: flex-start;
    -webkit-overflow-scrolling: touch;
    padding-bottom: .25rem;
  }
  .ph-proj-filters::-webkit-scrollbar { display: none; }
  .ph-proj-filter-btn { flex-shrink: 0; white-space: nowrap; }
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
  .ph-proj-card,
  .ph-proj-card:hover { transform: none; transition: border-color .15s; }
  .ph-proj-card-img img,
  .ph-proj-card:hover .ph-proj-card-img img { transition: none; transform: none; }
  .ph-proj-card-link,
  .ph-proj-card:hover .ph-proj-card-link { gap: .25rem; transition: none; }
  .ph-proj-card-link svg { transition: none; }
  .ph-proj-sector-card,
  .ph-proj-sector-card:hover { transform: none; }
  .bp-reveal { opacity: 1; transform: none; transition: none; }
  .bp-reveal.revealed { opacity: 1; transform: none; }
}