/* Ocean Ho — Timeline Memory Website. imdgfx build. Static/PHP, bilingual EN/VI. */
:root{
  --ink:#122a44; --muted:#5f7d99; --navy:#0e365f; --ocean:#1b6fc9; --ocean2:#3a8fe0;
  --bg:#f5f9fd; --panel:#ffffff; --line:#e5eef7; --line2:#d7e5f2;
  --blue:#2f7bf5; --green:#2fb46a; --purple:#8b5cf6; --amber:#f4a92b; --coral:#ff7a86; --gold:#f6b93b;
  --radius:16px; --radius-sm:11px;
  --shadow-sm:0 2px 10px rgba(14,54,95,.06); --shadow:0 12px 30px rgba(14,54,95,.12);
  --serif:"Fraunces","Georgia",serif; --sans:"Nunito Sans","Inter",system-ui,sans-serif;
  --side:264px; --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.55;
  -webkit-font-smoothing:antialiased;font-size:15.5px;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-family:var(--serif);color:var(--navy);font-weight:600;letter-spacing:-.01em}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid var(--gold);outline-offset:2px;border-radius:5px}
.ic{width:1em;height:1em;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}
/* bilingual */
.vi{display:none}
body.lang-vi .en{display:none}
body.lang-vi .vi{display:revert}

/* ---------- Top header ---------- */
.hdr{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.hdr-in{display:flex;align-items:center;gap:22px;height:64px;padding:0 24px;max-width:1500px;margin:0 auto}
.brand{display:flex;align-items:center;gap:10px}
.brand .whale{width:40px;height:40px;border-radius:11px;background:linear-gradient(135deg,var(--ocean),var(--ocean2));display:grid;place-items:center;color:#fff;font-size:20px}
.brand b{font-family:var(--serif);font-size:1.15rem;color:var(--navy);line-height:1}
.brand small{display:block;font-family:var(--sans);font-weight:800;letter-spacing:.18em;font-size:.6rem;color:var(--ocean2);margin-top:2px}
.topnav{display:flex;gap:26px;margin:0 auto}
.topnav a{font-weight:700;font-size:.95rem;color:var(--muted);padding:6px 0;position:relative}
.topnav a:hover{color:var(--ocean)}
.topnav a.active{color:var(--navy)}
.topnav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2.5px;background:var(--ocean);border-radius:2px}
.hdr-right{display:flex;align-items:center;gap:14px}
.langsw{display:inline-flex;background:var(--bg);border:1px solid var(--line);border-radius:9px;padding:2px}
.langsw button{border:0;background:none;font-family:var(--sans);font-weight:800;font-size:.8rem;color:var(--muted);padding:5px 11px;border-radius:7px;cursor:pointer}
.langsw button.on{background:var(--ocean);color:#fff}
.iconbtn{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;color:var(--muted);background:var(--bg);border:1px solid var(--line);cursor:pointer}
.iconbtn:hover{color:var(--ocean);border-color:var(--line2)}
.avatar{width:38px;height:38px;border-radius:50%;object-fit:cover;border:2px solid var(--line2)}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:7px}
.burger span{width:22px;height:2.4px;background:var(--navy);border-radius:2px;transition:.3s}

/* ---------- Layout ---------- */
.layout{display:grid;grid-template-columns:var(--side) 1fr;gap:0;max-width:1500px;margin:0 auto;align-items:start}
.sidebar{position:sticky;top:64px;height:calc(100dvh - 64px);overflow:auto;padding:22px 18px;border-right:1px solid var(--line);background:var(--panel)}
.content{padding:26px 30px 60px;min-width:0}

/* sidebar */
.side-profile{text-align:center;margin-bottom:18px}
.side-profile img{width:112px;height:112px;border-radius:50%;object-fit:cover;margin:0 auto 12px;border:4px solid #fff;box-shadow:var(--shadow)}
.side-profile h2{font-family:var(--serif);font-size:1.55rem;color:var(--navy)}
.side-profile p{color:var(--muted);font-size:.85rem;font-weight:600;margin-top:2px}
.side-nav{display:flex;flex-direction:column;gap:3px;margin:16px 0}
.side-nav a{display:flex;align-items:center;gap:12px;padding:11px 13px;border-radius:11px;font-weight:700;color:var(--muted);font-size:.95rem}
.side-nav a .ic{width:19px;height:19px}
.side-nav a:hover{background:var(--bg);color:var(--ocean)}
.side-nav a.active{background:#eaf3fd;color:var(--ocean)}
.stats{background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:15px;margin-top:6px}
.stats h4{font-family:var(--sans);font-weight:800;font-size:.82rem;color:var(--navy);margin-bottom:12px;text-transform:uppercase;letter-spacing:.04em}
.stat{display:flex;align-items:center;gap:11px;margin-bottom:12px}
.stat:last-child{margin-bottom:0}
.stat .si{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;color:#fff;flex:none}
.stat b{font-size:1.05rem;color:var(--navy);line-height:1;display:block}
.stat small{color:var(--muted);font-size:.76rem;font-weight:700}
.btn-add{display:flex;align-items:center;justify-content:center;gap:9px;width:100%;margin-top:16px;padding:13px;border-radius:12px;
  background:linear-gradient(120deg,var(--ocean),var(--ocean2));color:#fff;font-weight:800;font-size:.95rem;border:0;cursor:pointer;box-shadow:0 8px 18px rgba(27,111,201,.32)}
.btn-add:hover{transform:translateY(-1px)}
.side-manage{display:flex;align-items:center;gap:11px;padding:12px 13px;margin-top:8px;color:var(--muted);font-weight:700;font-size:.9rem}
.side-manage:hover{color:var(--ocean)}

/* ---------- Timeline main ---------- */
.page-title{font-family:var(--serif);font-size:2.1rem;color:var(--navy);margin-bottom:18px}
.tl-controls{display:flex;align-items:center;gap:12px;margin-bottom:24px;flex-wrap:wrap}
.ctrl{display:inline-flex;align-items:center;gap:8px;background:var(--panel);border:1px solid var(--line2);border-radius:11px;padding:10px 15px;font-weight:700;font-size:.9rem;color:var(--ink);cursor:pointer}
.ctrl:hover{border-color:var(--ocean2)}
.seg{margin-left:auto;display:inline-flex;background:var(--panel);border:1px solid var(--line2);border-radius:11px;padding:3px}
.seg button{display:inline-flex;align-items:center;gap:7px;border:0;background:none;font-family:var(--sans);font-weight:700;font-size:.88rem;color:var(--muted);padding:7px 14px;border-radius:8px;cursor:pointer}
.seg button.on{background:#eaf3fd;color:var(--ocean)}

.tl-wrap{display:grid;grid-template-columns:1fr 150px;gap:26px;align-items:start}
.timeline{position:relative;padding-left:112px}
.timeline::before{content:"";position:absolute;left:92px;top:8px;bottom:8px;width:2px;background:var(--line2)}
.tl-row{position:relative;margin-bottom:22px}
.tl-date{position:absolute;left:-112px;top:6px;width:74px;text-align:right;font-weight:800;color:var(--navy);font-size:.9rem;line-height:1.25}
.tl-date small{display:block;color:var(--muted);font-weight:700}
.tl-dot{position:absolute;left:-30px;top:4px;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;color:#fff;box-shadow:0 4px 10px rgba(14,54,95,.25);z-index:2}
.tl-dot .ic{width:17px;height:17px;stroke-width:2.2}

.entry{display:grid;grid-template-columns:300px 1fr auto;gap:18px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);overflow:hidden;transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.entry:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.entry-photo{position:relative;overflow:hidden}
.entry-photo img{width:100%;height:100%;object-fit:cover;min-height:180px}
.entry-body{padding:16px 6px 16px 0}
.chip{display:inline-block;font-size:.72rem;font-weight:800;padding:4px 10px;border-radius:999px;margin-bottom:8px}
.chip.blue{background:#e7f0fe;color:#2361c9}.chip.green{background:#e4f6ec;color:#1f9553}
.chip.purple{background:#efeafe;color:#6d3fe0}.chip.amber{background:#fdf1da;color:#c98311}
.entry-body h3{font-family:var(--serif);font-size:1.28rem;color:var(--navy);margin-bottom:6px}
.entry-body p{color:var(--muted);font-size:.92rem;margin-bottom:12px;max-width:32em}
.reacts{display:flex;gap:16px;align-items:center;color:var(--muted);font-weight:800;font-size:.85rem}
.reacts span{display:inline-flex;align-items:center;gap:5px}
.reacts .ic{width:16px;height:16px}
.reacts .heart{color:var(--coral)}
.entry-thumbs{display:flex;gap:8px;align-items:center;padding:16px 16px 16px 0}
.entry-thumbs img{width:92px;height:80px;object-fit:cover;border-radius:10px;border:1px solid var(--line)}
.entry-more{align-self:flex-start;padding:14px 14px 0 0;color:var(--line2)}

/* right rail */
.rail{position:sticky;top:96px;display:flex;flex-direction:column;gap:16px}
.rail-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:8px}
.rail-card .yr{display:block;padding:10px 14px;border-radius:9px;font-weight:800;color:var(--muted);font-size:.92rem;cursor:pointer}
.rail-card .yr:hover{background:var(--bg)}
.rail-card .yr.on{background:#eaf3fd;color:var(--ocean);border-left:3px solid var(--ocean)}
.rail-this{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px;text-align:center}
.rail-this small{color:var(--muted);font-weight:800;font-size:.75rem;text-transform:uppercase;letter-spacing:.05em}
.rail-this b{display:block;font-family:var(--serif);font-size:2rem;color:var(--navy);margin-top:4px}

/* ---------- Our Story ---------- */
.story-hero{text-align:center;max-width:760px;margin:20px auto 0}
.story-hero img{width:150px;height:150px;border-radius:50%;object-fit:cover;margin:0 auto 20px;border:5px solid #fff;box-shadow:var(--shadow)}
.story-hero .eyebrow{font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--ocean2);font-size:.8rem}
.story-hero h1{font-family:var(--serif);font-size:clamp(2rem,4vw,3rem);color:var(--navy);margin:8px 0 16px}
.story-hero p{color:var(--muted);font-size:1.06rem}
.story-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;max-width:760px;margin:32px auto}
.story-stat{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px;text-align:center;box-shadow:var(--shadow-sm)}
.story-stat b{display:block;font-family:var(--serif);font-size:2rem;color:var(--ocean)}
.story-stat small{color:var(--muted);font-weight:700}

/* ---------- Gallery ---------- */
.gal-tabs{display:flex;gap:8px;margin-bottom:20px}
.gal-tabs button{border:1px solid var(--line2);background:var(--panel);border-radius:10px;padding:9px 18px;font-weight:800;color:var(--muted);cursor:pointer}
.gal-tabs button.on{background:var(--ocean);color:#fff;border-color:var(--ocean)}
.masonry{columns:4;column-gap:14px}
.masonry img{width:100%;margin-bottom:14px;border-radius:12px;break-inside:avoid;box-shadow:var(--shadow-sm);cursor:pointer;transition:transform .2s}
.masonry img:hover{transform:scale(1.02)}

/* btn */
.btn-primary{display:inline-flex;align-items:center;gap:9px;background:linear-gradient(120deg,var(--ocean),var(--ocean2));color:#fff;font-weight:800;
  padding:14px 26px;border-radius:13px;box-shadow:0 8px 20px rgba(27,111,201,.3);border:0;cursor:pointer}
.btn-primary:hover{transform:translateY(-2px)}

.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

.scrim{position:fixed;inset:0;background:rgba(10,30,50,.45);z-index:55;display:none}

/* ---------- Responsive ---------- */
@media (max-width:1150px){ .tl-wrap{grid-template-columns:1fr} .rail{display:none} .entry-thumbs{display:none} .entry{grid-template-columns:280px 1fr} }
@media (max-width:900px){
  .topnav{display:none}
  .layout{grid-template-columns:1fr}
  .sidebar{position:fixed;top:0;left:0;height:100dvh;width:280px;z-index:56;transform:translateX(-105%);transition:transform .3s var(--ease)}
  .sidebar.open{transform:none}
  .burger{display:flex}
  .content{padding:20px 16px 80px}
  .story-stats{grid-template-columns:1fr 1fr}
  .masonry{columns:2}
}
@media (max-width:640px){
  .entry{grid-template-columns:1fr}
  .entry-photo img{min-height:200px}
  .entry-body{padding:14px}
  .timeline{padding-left:64px}
  .timeline::before{left:44px}
  .tl-date{position:static;text-align:left;width:auto;margin-bottom:8px;padding-left:0}
  .tl-dot{left:-36px}
  .page-title{font-size:1.7rem}
  .seg{margin-left:0}
}
/* mobile bottom nav */
.mobnav{display:none;position:fixed;bottom:0;left:0;right:0;z-index:57;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-top:1px solid var(--line);padding:8px 6px}
.mobnav-in{display:flex;justify-content:space-around;align-items:flex-end}
.mobnav a{display:flex;flex-direction:column;align-items:center;gap:3px;color:var(--muted);font-size:.66rem;font-weight:700;flex:1}
.mobnav a.active{color:var(--ocean)}
.mobnav a .ic{width:21px;height:21px}
.mobnav .add{margin-top:-18px}
.mobnav .add .ring{width:50px;height:50px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--ocean2));display:grid;place-items:center;color:#fff;box-shadow:0 6px 14px rgba(27,111,201,.4)}
@media (max-width:900px){ .mobnav{display:block} .content{padding-bottom:96px} }