/* Argos Guardian — Academy brand stylesheet.
   Aligned to the argosguardian.org design system (light-blue Argos family).
   Color grammar: mint = safe/correct, coral = red flag, amber = caution. */
:root{
  /* --- Argos-family brand tokens (light) --- */
  --bg:#eef4fb; --bg-soft:#f6f9fd; --surface:#ffffff; --surface-2:#f2f7fc;
  --ink:#0b1b2e; --ink-2:#33475b; --muted:#62758a; --line:rgba(11,27,46,.10);
  --sky:#0ea5e9; --sky-lite:#38bdf8; --blue:#0b74e5; --blue-deep:#0959b8;
  --cyan:#0891b2; --cyan-glow:#00d4ff;
  --mint:#0d9f6e; --mint-lite:#10b981; --coral:#e5484d; --coral-deep:#c23b3f; --amber:#d97706;
  --navy:#0a1826; --grad-brand:linear-gradient(135deg,#38bdf8 0%,#0b74e5 100%);
  --ring:rgba(14,165,233,.32);
  --shadow-sm:0 2px 8px rgba(11,27,46,.07);
  --shadow:0 18px 44px -22px rgba(11,27,46,.34);
  --shadow-lg:0 30px 70px -30px rgba(11,27,46,.42);
  --r:16px; --r-lg:22px; --r-sm:10px;
  --sans:"Manrope",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
  --disp:"Fraunces",Georgia,"Times New Roman",serif;
  --mono:"JetBrains Mono",ui-monospace,"SF Mono",Consolas,monospace;
  --maxw:1120px;
  /* aliases: keep existing component classes but map them to the new palette (resolved lazily → follow the theme) */
  --cream:var(--bg); --paper:var(--surface); --paper2:var(--bg-soft);
  --ink-soft:var(--ink-2); --green:var(--blue); --green-deep:var(--blue-deep);
  color-scheme:light;
}
/* dark palette shared by the OS-preference and the manual toggle */
@media (prefers-color-scheme:dark){ :root:not([data-theme="light"]){
  --bg:#081321; --bg-soft:#0a1826; --surface:#0e2135; --surface-2:#10273e;
  --ink:#eaf2fb; --ink-2:#b9cbe0; --muted:#8ba3bd; --line:rgba(255,255,255,.10);
  --sky:#38bdf8; --sky-lite:#7dd3fc; --blue:#4d9bff; --blue-deep:#4d9bff;
  --mint:#34d399; --coral:#ff6b6b; --amber:#fbbf24; --navy:#060f1a;
  --grad-brand:linear-gradient(135deg,#38bdf8,#2b7fff); color-scheme:dark;
}}
:root[data-theme="dark"]{
  --bg:#081321; --bg-soft:#0a1826; --surface:#0e2135; --surface-2:#10273e;
  --ink:#eaf2fb; --ink-2:#b9cbe0; --muted:#8ba3bd; --line:rgba(255,255,255,.10);
  --sky:#38bdf8; --sky-lite:#7dd3fc; --blue:#4d9bff; --blue-deep:#4d9bff;
  --mint:#34d399; --coral:#ff6b6b; --amber:#fbbf24; --navy:#060f1a;
  --grad-brand:linear-gradient(135deg,#38bdf8,#2b7fff); color-scheme:dark;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--bg);
  font-family:var(--sans);font-size:17px;line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;transition:background .25s ease,color .25s ease}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
h1,h2,h3,h4{font-family:var(--disp);font-weight:600;line-height:1.08;letter-spacing:-.015em;color:var(--ink);text-wrap:balance;margin:0}
.eyebrow{font-family:var(--sans);font-weight:800;font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--blue)}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:20px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--disp);font-weight:600;font-size:20px;color:var(--ink)}
.brand:hover{text-decoration:none}
.shield{width:30px;height:30px;flex:0 0 auto;display:grid;place-items:center;border-radius:9px;
  background:var(--grad-brand);color:#fff;font-size:16px;box-shadow:0 4px 14px -4px var(--ring)}
.nav .links{margin-left:auto;display:flex;align-items:center;gap:24px}
.nav .links a{color:var(--ink-2);font-weight:600;font-size:15px}
.nav .links a:hover{color:var(--blue);text-decoration:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--sans);font-weight:700;font-size:15px;
  padding:12px 22px;border-radius:var(--r-sm);border:1.5px solid transparent;cursor:pointer;transition:.16s;white-space:nowrap}
.btn.primary{background:var(--blue);color:#fff;box-shadow:0 6px 18px -8px var(--ring)}
.btn.primary:hover{background:var(--blue-deep);text-decoration:none;transform:translateY(-1px)}
.btn.ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn.ghost:hover{border-color:var(--blue);color:var(--blue);text-decoration:none}
.btn.coral{background:var(--coral);color:#fff}
.btn.coral:hover{background:var(--coral-deep);text-decoration:none;transform:translateY(-1px)}
.btn.lg{padding:15px 28px;font-size:16px}
.navtoggle{display:none}
.themetoggle{width:40px;height:40px;border-radius:999px;border:1px solid var(--line);background:var(--surface);
  color:var(--ink);cursor:pointer;font-size:16px;display:inline-grid;place-items:center;transition:.16s}
.themetoggle:hover{border-color:var(--blue);color:var(--blue)}
.themetoggle:focus-visible{outline:2px solid var(--blue);outline-offset:2px}

/* hero */
.hero{position:relative;overflow:hidden;background:radial-gradient(120% 110% at 82% -10%, color-mix(in srgb,var(--sky-lite) 20%,var(--bg)) 0%, var(--bg) 55%)}
.hero .wrap{padding:74px 24px 64px;display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:center}
.hero h1{font-size:clamp(38px,5.6vw,64px);margin:16px 0 0}
.hero h1 .u{background:linear-gradient(120deg,var(--sky-lite),var(--blue));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lede{font-size:clamp(18px,2.2vw,22px);color:var(--ink-2);margin:20px 0 28px;max-width:34ch}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap}
.hero .trust{margin-top:26px;color:var(--muted);font-size:14px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.hero .trust b{color:var(--ink)}
.heroart{position:relative;display:grid;place-items:center}

/* sections */
section{padding:74px 0}
.section-head{max-width:62ch;margin:0 auto 44px;text-align:center}
.section-head h2{font-size:clamp(28px,4vw,44px)}
.section-head p{color:var(--ink-2);font-size:19px;margin:14px 0 0}
.alt{background:linear-gradient(180deg,var(--bg-soft),var(--surface-2))}
.dark{background:var(--navy);color:#e7f0ea}
.dark h2,.dark h3{color:#fff}
.dark .section-head p{color:#9fb6d0}

.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--shadow-sm)}
.stat .n{font-family:var(--disp);font-weight:600;font-size:clamp(34px,5vw,46px);color:var(--blue);line-height:1}
.stat p{margin:10px 0 0;color:var(--ink-2);font-size:15.5px}

/* lesson cards */
.lessons{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.lesson{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);transition:.2s}
.lesson:hover{transform:translateY(-4px);box-shadow:var(--shadow);text-decoration:none}
.lesson .top{padding:30px 24px;color:#fff;position:relative;min-height:132px;display:flex;flex-direction:column;justify-content:flex-end}
.lesson .top .ic{position:absolute;top:18px;right:20px;font-size:30px;opacity:.92}
.lesson .top .k{font-family:var(--sans);font-weight:800;font-size:12px;letter-spacing:.14em;text-transform:uppercase;opacity:.9}
.lesson .top h3{color:#fff;font-size:26px;margin-top:4px}
.lesson.l1 .top{background:linear-gradient(140deg,#0959b8,#0ea5e9)}
.lesson.l2 .top{background:linear-gradient(140deg,#b3352f,#e5484d)}
.lesson.l3 .top{background:linear-gradient(140deg,#0e7490,#22d3ee)}
.lesson .body{padding:22px 24px;flex:1;display:flex;flex-direction:column}
.lesson .body p{margin:0;color:var(--ink-2);font-size:15px}
.lesson .body .go{margin-top:16px;font-weight:800;color:var(--blue);font-size:15px}
.lesson.soon{opacity:.72}
.lesson.soon .top{background:linear-gradient(140deg,#3a4a5c,#62758a)}
.tag{display:inline-block;font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;
  padding:3px 9px;border-radius:999px;background:rgba(217,119,6,.16);color:#a35d06;margin-top:8px}

/* three tells */
.method{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.tell{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;box-shadow:var(--shadow-sm)}
.tell .ic{font-size:30px}
.tell h3{font-size:20px;margin:12px 0 8px}
.tell p{margin:0;color:var(--ink-2);font-size:15px}
.dark .tell{background:#0e2135;border-color:#1a3a56}
.dark .tell p{color:#9fb6d0}

/* cta band */
.ctaband{background:var(--grad-brand);color:#fff;border-radius:26px;padding:52px;text-align:center;box-shadow:var(--shadow)}
.ctaband h2{color:#fff;font-size:clamp(26px,4vw,40px)}
.ctaband p{color:#e6f3ff;font-size:19px;margin:14px auto 26px;max-width:44ch}
.ctaband .btn.primary{background:#fff;color:var(--blue)}
.ctaband .btn.primary:hover{background:#eaf4ff}
.ctaband .btn.ghost{border-color:rgba(255,255,255,.55);color:#fff}

/* footer */
.foot{background:var(--navy);color:#a9c0d6;padding:52px 0 40px;font-size:14.5px}
.foot .wrap{display:flex;flex-wrap:wrap;gap:30px;justify-content:space-between;align-items:flex-start}
.foot .brand{color:#fff}
.foot a{color:#bcd6ea}
.foot .col h5{color:#fff;font-family:var(--sans);font-weight:800;font-size:13px;letter-spacing:.1em;text-transform:uppercase;margin:0 0 12px}
.foot .col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.foot .fine{width:100%;border-top:1px solid #1a3a56;margin-top:14px;padding-top:20px;color:#8ba3bd;font-size:13px}
.endbrand{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px;margin-top:6px}
.endbrand .dot{width:8px;height:8px;border-radius:50%;background:var(--sky)}

.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

@media (max-width:900px){
  .hero .wrap{grid-template-columns:1fr;gap:36px}
  .heroart{order:-1}
  .stats,.lessons,.method{grid-template-columns:1fr}
  .nav .links{display:none;position:absolute;top:66px;left:0;right:0;background:var(--bg);
    flex-direction:column;align-items:flex-start;gap:0;padding:8px 24px 18px;border-bottom:1px solid var(--line)}
  .nav .links.open{display:flex}
  .nav .links a{padding:12px 0;width:100%;border-bottom:1px solid var(--line)}
  .nav .links .btn{margin-top:12px}
  .navtoggle{display:inline-grid;place-items:center;width:42px;height:42px;border-radius:11px;margin-left:auto;
    border:1px solid var(--line);background:var(--surface);font-size:20px;cursor:pointer}
  .ctaband{padding:36px 24px}
}
@media (prefers-reduced-motion:reduce){ .reveal{transition:none} body{transition:none} }