:root{
  --pg_bg: #eef0ed;
  --pg_tile: #4f6473;
  --pg_tile_hover: #3f5562;
  --pg_text: #1f2a31;
  --pg_anim: 900ms;
  --pg_anim_ease: cubic-bezier(.2,.9,.2,1);
}

/* GLOBAL */
*{ box-sizing: border-box; }

/* SEKCJA */
.program_section{
  position:relative;
  width:100%;
  height:100vh;
  background: var(--pg_bg);
  overflow-x:hidden;
  overflow-y:hidden;
}

.program_section.is-expanded{
  overflow-y:auto;
  overflow-x:hidden;
}

/* TŁO */
.program_bg{
  position:absolute;
  inset:0;
  z-index:0;
  background:
    radial-gradient(900px 520px at 50% 48%, rgba(255,255,255,0.75) 0%, rgba(255,255,255,0.92) 45%, rgba(238,240,237,1) 82%),
    url("img/program_bg.png") center center / cover no-repeat;
  opacity:1;
  filter: saturate(1.02) contrast(1.02);
  transform: scale(1.02);
}

/* WRAP */
.program_wrap{
  position:relative;
  z-index:2;
  width:min(1280px, 92%);
  margin:0 auto;
  padding:48px 16px 40px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:20px;
  min-height:100vh;
}

.program_section.is-expanded .program_wrap{
  justify-content:flex-start;
  min-height:100%;
}

/* TYTUŁ */
.program_title{
  margin:0;
  font-family:"Arsenal", Arial, sans-serif;
  font-weight:700;
  letter-spacing:0.8px;
  color: rgba(31,42,49,0.85);
  font-size:1.65rem;
}

/* SIATKA */
.program_grid{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap:28px;
  align-content:start;
  flex: 0 0 auto;
  position:relative;
}

/* KAFELKI */
.program_tile{
  border:none;
  background: var(--pg_tile);
  color:#fff;
  border-radius:22px;
  padding:0;
  cursor:pointer;
  box-shadow:0 14px 34px rgba(0,0,0,0.15);
  transition:
    transform var(--pg_anim) var(--pg_anim_ease),
    box-shadow var(--pg_anim) ease,
    background var(--pg_anim) ease,
    opacity var(--pg_anim) ease;
  display:flex;
  min-height:170px;
  text-align:center;
}

.program_tile:focus-visible{
  outline: 3px solid rgba(79,100,115,0.35);
  outline-offset: 3px;
}

.program_tile:hover{
  transform: translateY(-4px);
  box-shadow:0 18px 44px rgba(0,0,0,0.20);
  background: var(--pg_tile_hover);
}

.program_tile.is-active{
  outline: 3px solid rgba(0,0,0,0.25);
}

/* TREŚĆ KAFELKÓW */
.tile_inner{
  width:100%;
  padding:18px 16px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:10px;
}

.tile_top{
  font-family:"Arsenal", Arial, sans-serif;
  font-weight:700;
  letter-spacing:1px;
  font-size:1.05rem;
  line-height:1.15;
  text-transform:uppercase;
}

.tile_time{
  font-family:"Arsenal", Arial, sans-serif;
  font-size:0.98rem;
  opacity:0.92;
  letter-spacing:0.6px;
}

.tile_speaker{
  margin-top:4px;
  font-family:"Arsenal", Arial, sans-serif;
  font-weight:700;
  font-size:0.95rem;
  letter-spacing:0.8px;
  text-transform:uppercase;
  opacity:0.95;
}

.tile_quote{
  font-family:"Arsenal", Arial, sans-serif;
  font-size:0.92rem;
  line-height:1.25;
  opacity:0.92;
  max-width: 280px;
}

.tile_place{
  font-family:"Arsenal", Arial, sans-serif;
  font-size:0.95rem;
  opacity:0.92;
  letter-spacing:0.5px;
}

/* TRYB ROZWINIĘCIA */
.program_section.is-expanded .program_grid{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:18px;
}

.program_section.is-expanded .program_tile{
  position:absolute;
  opacity:0;
  transform: scale(0.96);
  pointer-events:none;
  transition:none;
}

.program_section.is-expanded .program_tile.is-active{
  position:relative;
  width:min(560px, 92%);
  min-height:190px;
  opacity:1;
  transform: translateY(0) scale(1);
  pointer-events:auto;
  background: var(--pg_tile);
  box-shadow:0 18px 44px rgba(0,0,0,0.20);
}

/* PANEL SZCZEGÓŁÓW */
.program_detail{
  opacity:0;
  transform: translateY(-10px);
  max-height:0;
  overflow:hidden;
  transition:
    opacity var(--pg_anim) ease,
    transform var(--pg_anim) var(--pg_anim_ease),
    max-height var(--pg_anim) var(--pg_anim_ease);
}

.program_section.is-expanded .program_detail{
  opacity:1;
  transform: translateY(0);
  max-height:5000px;
  flex: 0 0 auto;
  min-height:0;
  display:block;
}

.program_detail_inner{
  background: rgba(255,255,255,0.88);
  border-radius:20px;
  padding:18px 18px;
  box-shadow:0 14px 34px rgba(0,0,0,0.12);
  color: rgba(31,42,49,0.92);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display:flex;
  flex-direction:column;
  gap:12px;
  width:100%;
  max-width:100%;
  overflow-x:hidden;
}

.program_detail_head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:12px;
}

.program_detail_title{
  font-family:"Arsenal", Arial, sans-serif;
  font-weight:700;
  letter-spacing:0.3px;
  font-size:1.06rem;
  margin:0;
  padding-top:2px;
}

.program_back_btn{
  border:none;
  cursor:pointer;
  border-radius:999px;
  padding:10px 14px;
  background: rgba(79,100,115,0.14);
  color: rgba(31,42,49,0.92);
  font-family:"Arsenal", Arial, sans-serif;
  font-weight:700;
  transition: transform 220ms var(--pg_anim_ease), background 220ms ease;
  white-space:nowrap;
}

.program_back_btn:hover{
  transform: translateY(-1px);
  background: rgba(79,100,115,0.20);
}

.program_detail_body{
  font-family:"Arsenal", Arial, sans-serif;
  font-size:0.98rem;
  line-height:1.5;
  overflow-x:hidden;
  overflow-y:auto;
  padding-right:8px;
}

.program_detail_body p{ margin: 0 0 10px 0; }
.program_detail_body ul{ margin: 10px 0 0 18px; padding:0; }
.program_detail_body li{ margin: 6px 0; }

/* RESPONSYWNOŚĆ */
@media (max-width: 1100px){
  .program_wrap{ padding:36px 16px 28px; }
  .program_grid{ grid-template-columns: repeat(2, 1fr); gap:22px; }
  .program_tile{ min-height:160px; }
  .tile_quote{ max-width:none; }
}

@media (max-width: 700px){
  .program_section{
    height:auto;
    min-height:100vh;
    padding:24px 0;
    overflow: visible;
  }

  .program_wrap{
    padding:18px 16px 18px;
    min-height:auto;
    justify-content:flex-start;
  }

  .program_title{
    text-align:center;
    font-size:1.35rem;
  }

  .program_grid{
    grid-template-columns: 1fr;
    gap:16px;
  }

  .program_tile{
    border-radius:18px;
  }

  .tile_inner{
    padding:16px 14px;
  }

  .program_detail{
    opacity:1;
    transform:none;
    max-height:none;
    overflow:visible;
    transition:none;
    width:100%;
    margin-top:10px;
  }

  .program_detail_inner{
    width:100%;
    border-radius:18px;
    padding:16px 14px;
  }

  .program_detail_head{
    align-items:flex-start;
  }

  .program_back_btn{
    display:none;
  }

  .program_detail_body{
    overflow:visible;
    max-height:none;
    padding-right:0;
  }

  .program_section.is-expanded .program_grid{
    display:grid;
    grid-template-columns: 1fr;
    align-items:stretch;
    gap:16px;
  }

  .program_section.is-expanded .program_tile{
    position:relative;
    opacity:1;
    transform:none;
    pointer-events:auto;
    transition:
      transform var(--pg_anim) var(--pg_anim_ease),
      box-shadow var(--pg_anim) ease,
      background var(--pg_anim) ease,
      opacity var(--pg_anim) ease;
  }

  .program_section.is-expanded .program_tile.is-active{
    width:auto;
    min-height:170px;
    box-shadow:0 14px 34px rgba(0,0,0,0.15);
  }
}