/* =====================================================================
   Nautilus Treasure Chest - page styles.
   Loaded AFTER styles.css and builds on its variables (--navy, --gold...).
   ===================================================================== */

/* ---------- COLORS TO EXPERIMENT WITH ----------
   The boxes ("cards") on the TALKS and TOOLS tabs. Change a value, save, then refresh
   the page with Ctrl+Shift+R. Any CSS color works: #212963, rgb(33,41,99), navy ... */
:root{
  --card-bg:#465f6b;                    /* card background */
  --card-bg-hover:#547280;              /* card background while the mouse is over it */
  --card-border:rgba(224,151,42,.40);   /* card outline (gold, 40% visible) */
}

body.treasure{
  background:#0c102d;
  color:#fff;
  min-height:100vh;
  display:flex;flex-direction:column;
}
body.treasure--compass{
  background:
    linear-gradient(rgba(12,16,45,.62),rgba(12,16,45,.84)),
    #0c102d url("compass_rose_bg.webp") center/cover no-repeat fixed;
}
/* Darker veil over the compass for pages with a large headline on top of it.
   Raise the two numbers (0 = image fully visible, 1 = hidden) for more contrast. */
body.treasure--dim{
  background:
    linear-gradient(rgba(12,16,45,.84),rgba(12,16,45,.93)),
    #0c102d url("compass_rose_bg.webp") center/cover no-repeat fixed;
}
.treasure--dim .thanks h1{text-shadow:0 2px 18px rgba(6,10,22,.9)}
.treasure main{flex:1;padding:56px 0 72px}
.treasure [hidden]{display:none!important}
.treasure img{height:auto}

/* ---------- top bar & footer ---------- */
.t-top{padding:22px 0;border-bottom:1px solid var(--line-d)}
.t-top__inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.t-brand{display:inline-flex;align-items:center;gap:12px;font-weight:600;letter-spacing:.2em;
  text-transform:uppercase;font-size:.84rem;color:var(--gold-2)}
.t-brand img{width:44px;height:auto}
.t-top__user{display:flex;align-items:center;gap:14px;font-size:.88rem;color:rgba(255,255,255,.7)}
.t-link{background:none;border:0;padding:0;font:inherit;color:var(--gold-2);cursor:pointer;
  border-bottom:1px solid transparent}
.t-link:hover{border-bottom-color:var(--gold-2)}
.t-foot{padding:24px 0;border-top:1px solid rgba(255,255,255,.08);font-size:.82rem;
  color:rgba(255,255,255,.5);text-align:center}

/* ---------- panels & forms ---------- */
.t-card{
  background:rgba(12,16,45,.78);border:1px solid var(--line-d);border-radius:18px;text-align:center;
  padding:36px 34px;box-shadow:var(--shadow);backdrop-filter:blur(6px);
}
.t-card input{text-align:center}
.t-lead{font-size:1.12rem;color:rgba(255,255,255,.92);margin-bottom:24px}
.t-form{display:flex;flex-direction:column;gap:16px}
.t-field{display:flex;flex-direction:column;gap:6px}
.t-field label{font-size:.78rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-2)}
.t-field input{
  font:inherit;color:#fff;background:rgba(255,255,255,.07);
  border:1.5px solid rgba(255,255,255,.22);border-radius:12px;padding:14px 16px;
  transition:border-color .2s,background .2s;
}
.t-field input::placeholder{color:rgba(255,255,255,.4)}
.t-field input:focus{outline:none;border-color:var(--gold);background:rgba(255,255,255,.1)}
.t-form .btn{justify-content:center;margin-top:6px}
.t-form .btn[disabled]{opacity:.6;cursor:wait;transform:none}
.t-hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.t-msg{border-radius:12px;padding:12px 16px;font-size:.95rem}
.t-msg--error{background:rgba(139,26,26,.35);border:1px solid rgba(255,120,120,.5)}
.t-done h2{font-size:1.7rem;color:var(--gold-2);margin-bottom:12px}
.t-done p{color:rgba(255,255,255,.88)}
.t-done p + p{margin-top:12px}
.t-small{font-size:.86rem;color:rgba(255,255,255,.6);margin-top:18px}
.t-small a{color:var(--gold-2);border-bottom:1px solid rgba(242,185,87,.4)}

/* ---------- event landing page ---------- */
.landing{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}
.thanks__photo{width:230px;border-radius:50%;overflow:hidden;border:4px solid var(--gold);margin-bottom:34px;
  box-shadow:0 0 0 8px rgba(224,151,42,.18),var(--shadow)}
.thanks__photo img{width:100%;aspect-ratio:1;object-fit:cover}
.thanks h1{font-size:clamp(2.1rem,4.2vw,3.5rem);letter-spacing:-.02em}
/* The chest overlaps the top of the card by --overlap; the card's text starts --gap below the chest. */
.chest{--overlap:70px;--gap:28px}
.chest__art{display:block;position:relative;z-index:2;width:230px;margin:0 auto calc(-1 * var(--overlap));
  filter:drop-shadow(0 18px 30px rgba(224,151,42,.3))}
.chest .t-card{padding-top:calc(var(--overlap) + var(--gap))}

/* ---------- login page ---------- */
.login{max-width:480px;margin:0 auto;text-align:center}
.login__art{width:220px;margin:0 auto 8px}
.login h1{font-size:clamp(1.9rem,4vw,2.6rem);margin-bottom:12px}
.login .t-card{margin-top:28px}
.login .t-card h1 + .t-form{margin-top:24px}

/* ---------- treasure chest: header & tabs ---------- */
.vault-head{display:flex;align-items:center;gap:28px;margin-bottom:36px}
.vault-head img{width:150px;flex:none}
.vault-head h1{font-size:clamp(2rem,4.4vw,3.2rem)}
.vault-head p{color:rgba(255,255,255,.75);margin-top:10px;max-width:56ch}
.tabs{display:flex;gap:8px;border-bottom:1px solid var(--line-d);margin-bottom:34px;padding:4px 4px 0;
  overflow-x:auto;overflow-y:hidden}
.tab{
  background:none;border:0;cursor:pointer;font:inherit;font-weight:600;letter-spacing:.2em;font-size:.92rem;
  color:rgba(255,255,255,.6);padding:16px 26px;border-bottom:3px solid transparent;
  display:inline-flex;align-items:center;gap:10px;transition:color .2s,border-color .2s;
}
.tab:hover{color:#fff}
.tab[aria-selected="true"]{color:var(--gold-2);border-bottom-color:var(--gold)}
.tab__count{font-size:.72rem;letter-spacing:0;background:rgba(224,151,42,.18);color:var(--gold-2);
  border-radius:999px;padding:2px 9px}
.panel__empty{color:rgba(255,255,255,.6)}

/* ---------- resource cards ---------- */
.res-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.res{
  background:var(--card-bg);border:1px solid var(--card-border);border-radius:16px;padding:26px 24px;
  display:flex;flex-direction:column;gap:10px;transition:transform .25s ease,border-color .25s ease,background .25s ease;
}
.res:hover{transform:translateY(-3px);border-color:var(--gold);background:var(--card-bg-hover)}
.res h3{font-size:1.22rem;line-height:1.25}
.res h3 a:hover,.res h3 button:hover{color:var(--gold-2)}
.res h3 button{background:none;border:0;padding:0;font:inherit;color:inherit;cursor:pointer;text-align:left}
.res p{color:rgba(255,255,255,.8);font-size:.96rem;flex:1}
.res p a,.collection__head p a{color:var(--gold-2);border-bottom:1px solid rgba(242,185,87,.45)}
.res p a:hover,.collection__head p a:hover{border-bottom-color:var(--gold-2)}
.res__actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.btn--sm{padding:10px 18px;font-size:.88rem}
.res__go{color:var(--gold-2);font-weight:600;font-size:.92rem;display:inline-flex;align-items:center;gap:.4em}

/* ---------- media collections ---------- */
.collection + .collection{margin-top:44px}
.collection__head{display:flex;align-items:center;gap:22px;margin-bottom:22px}
.collection__thumb{flex:none;width:120px;border-radius:12px;border:1px solid var(--line-d);box-shadow:var(--shadow)}
.collection h3{font-size:1.5rem}
.collection__head p{color:rgba(255,255,255,.7);margin-top:6px}
.player{position:sticky;top:12px;z-index:5;background:#141a45;border:1px solid var(--gold);border-radius:14px;
  padding:14px 18px;margin-bottom:16px;box-shadow:var(--shadow)}
.player__now{font-size:.9rem;color:var(--gold-2);margin-bottom:8px;font-weight:600}
.player audio,.player video{width:100%;display:block}
.tracks{list-style:none;margin:0;padding:0;border:1px solid var(--line-d);border-radius:14px;overflow:hidden}
.track{display:flex;align-items:center;gap:14px;padding:12px 18px;border-top:1px solid rgba(255,255,255,.08)}
.track:first-child{border-top:0}
.track.is-playing{background:rgba(224,151,42,.12)}
.track__play{flex:none;width:40px;height:40px;border-radius:50%;border:1.5px solid var(--gold);background:none;
  color:var(--gold-2);cursor:pointer;display:grid;place-items:center;font-size:.9rem;transition:background .2s,color .2s}
.track__play:hover,.track.is-playing .track__play{background:var(--gold);color:var(--navy-deep)}
.track__title{flex:1;min-width:0;font-weight:500}
.track__title small{display:block;font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-2);font-weight:600}
.track__size{font-size:.82rem;color:rgba(255,255,255,.5);white-space:nowrap}
.track__dl{flex:none;color:var(--gold-2);font-size:.86rem;font-weight:600;border:1.5px solid rgba(255,255,255,.25);
  border-radius:999px;padding:7px 14px;transition:border-color .2s}
.track__dl:hover{border-color:var(--gold)}

/* ---------- slide viewer ---------- */
.viewer{position:fixed;inset:0;z-index:300;background:rgba(4,6,20,.96);display:flex;flex-direction:column}
.viewer__bar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 20px;
  border-bottom:1px solid var(--line-d)}
.viewer__title{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.viewer__tools{display:flex;align-items:center;gap:10px;flex:none}
.viewer__stage{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;padding:16px;position:relative}
.viewer__stage canvas{max-width:100%;max-height:100%;border-radius:6px;box-shadow:0 20px 60px rgba(0,0,0,.6);background:#fff}
.viewer__note{color:rgba(255,255,255,.75);text-align:center;max-width:46ch}
.viewer__nav{position:absolute;top:50%;transform:translateY(-50%);width:52px;height:52px;border-radius:50%;
  border:1.5px solid rgba(255,255,255,.35);background:rgba(12,16,45,.7);color:#fff;font-size:1.3rem;cursor:pointer;
  display:grid;place-items:center;transition:border-color .2s,color .2s}
.viewer__nav:hover{border-color:var(--gold);color:var(--gold-2)}
.viewer__nav[disabled]{opacity:.25;cursor:default}
.viewer__nav--prev{left:16px}
.viewer__nav--next{right:16px}
.viewer__foot{display:flex;align-items:center;justify-content:center;gap:14px;padding:12px 20px;
  border-top:1px solid var(--line-d);font-size:.9rem;color:rgba(255,255,255,.75)}
.viewer__foot input[type=range]{width:min(420px,50vw);accent-color:var(--gold)}
.icon-btn{background:none;border:1.5px solid rgba(255,255,255,.3);color:#fff;border-radius:999px;cursor:pointer;
  font:inherit;font-size:.86rem;font-weight:600;padding:8px 16px;transition:border-color .2s,color .2s}
.icon-btn:hover{border-color:var(--gold);color:var(--gold-2)}

/* ---------- responsive ---------- */
@media(max-width:860px){
  .landing{grid-template-columns:1fr;gap:40px}
  .thanks{text-align:center}
  .thanks__photo{width:180px;margin:0 auto 24px}
  .thanks .eyebrow{justify-content:center}
  .vault-head{flex-direction:column;text-align:center;gap:14px}
  .vault-head img{width:120px}
}
@media(max-width:560px){
  .treasure main{padding:36px 0 56px}
  .t-card{padding:28px 22px}
  .tab{padding:14px 16px;letter-spacing:.14em}
  .collection__head{gap:16px}
  .collection__thumb{width:84px}
  .track{flex-wrap:wrap}
  .track__title{flex-basis:calc(100% - 60px)}
  .track__size{margin-left:54px}
  .viewer__nav{width:42px;height:42px}
  .t-top__user span{display:none}
}