/* ============================================================
   InstaTuition — Global Styles
   /learn/instatuition/assets/css/insta-global.css
   Brand: teal + Saturn (from logo), distinct from ACCA Smart red.
   Relies on CABSTATES global.css tokens: --space-*, --font-*,
   --radius-*, --transition-*, --white, --yellow, --teal, --black,
   --z-sticky, --blue-light.
   ============================================================ */

/* ── InstaTuition CSS Variables ─────────────────────────────── */
:root {
    /* CABSTATES global.css defines --space 1-6,8,10,12,16,20,24,32 but NOT 7.
       Define the missing step so `var(--space-7)` declarations don't drop
       (an undefined token with no fallback invalidates the whole rule —
       this was breaking `margin: 0 auto var(--space-7)` centering). */
    --space-7:         1.75rem;   /* between --space-6 (1.5rem) and --space-8 (2rem) */

    --insta-bg:        #06121C;   /* deep teal-tinted dark page bg */
    --insta-card:      #0C2230;   /* card background */
    --insta-card-2:    #103040;   /* elevated card */
    --insta-border:    #1B3F52;   /* borders / dividers */
    --insta-teal:      #2EE6C5;   /* bright wordmark teal */
    --insta-teal-deep: #00B8A9;   /* CABSTATES teal */
    --insta-gold:      #D4AF37;   /* Saturn ring gold */
    --insta-silver:    #C0C0C0;   /* Saturn ring silver */
}

/* ── Body ───────────────────────────────────────────────────── */
body.insta-interior {
    background: var(--insta-bg);
    color: var(--white);
    min-height: 100vh;
}

.main-content {
    padding-top: 72px; /* clears fixed navbar */
}

/* ── Flash message ──────────────────────────────────────────── */
.flash-message {
    position: fixed;
    top: 84px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    min-width: 300px;
    max-width: 560px;
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.88rem;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}
.flash-message.alert-success { background: rgba(46, 230, 197, 0.15); border: 1px solid rgba(46, 230, 197, 0.35); color: var(--insta-teal); }
.flash-message.alert-error   { background: rgba(220, 20, 60, 0.12); border: 1px solid rgba(220, 20, 60, 0.25); color: #ff8a8a; }
.flash-message.alert-info    { background: rgba(0, 71, 171, 0.12);  border: 1px solid rgba(0, 71, 171, 0.25);  color: var(--blue-light, #7fb0ff); }

/* ── Skip link ──────────────────────────────────────────────── */
.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--insta-teal);
    color: var(--black);
    padding: var(--space-2) var(--space-4);
    z-index: 10000;
}
.skip-link:focus { left: 8px; top: 8px; }

/* ════════════════════════════════════════════════════════════
   NAVBAR
═══════════════════════════════════════════════════════════════ */
.insta-navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: var(--z-sticky, 1000);
    background: #0A0A0A;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    height: 72px;
    display: flex;
    align-items: center;
}
.insta-nav-inner {
    display: flex;
    align-items: center;
    height: 100%;
    width: 100%;
}

/* CABSTATES brand (left) */
.insta-nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    flex-shrink: 0;
    padding-right: var(--space-5);
}
.insta-nav-brand:hover { text-decoration: none; }
.insta-nav-brand-logo { width: 36px; height: 36px; object-fit: contain; }
.insta-nav-brand-text { display: flex; flex-direction: column; gap: 1px; }
.insta-nav-brand-name {
    font-family: var(--font-mono);
    font-size: 0.85rem; font-weight: 700;
    color: var(--white); line-height: 1; letter-spacing: 0.02em;
}
.insta-nav-brand-accent { color: var(--yellow); }
.insta-nav-brand-tagline {
    font-family: var(--font-mono);
    font-size: 0.52rem; color: rgba(245, 245, 245, 0.35);
    letter-spacing: 0.1em; text-transform: uppercase;
}

/* Separator */
.insta-nav-separator {
    width: 1px; height: 32px;
    background: rgba(255, 255, 255, 0.1);
    margin: 0 var(--space-5);
    flex-shrink: 0;
}

/* Product section */
.insta-nav-product { display: flex; align-items: center; gap: var(--space-6); flex: 1; }
.insta-nav-product-brand { text-decoration: none; flex-shrink: 0; }
.insta-nav-product-brand:hover { text-decoration: none; }
.insta-nav-product-name {
    font-family: var(--font-display);
    font-size: 1.05rem; font-weight: 700;
    color: var(--white); letter-spacing: -0.01em; white-space: nowrap;
}
.insta-nav-product-accent { color: var(--insta-teal); }

/* Nav links */
.insta-nav-links { display: flex; align-items: center; list-style: none; padding: 0; margin: 0; }
.insta-nav-links li { position: relative; }
.insta-nav-link {
    display: flex; align-items: center; gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-body); font-size: 0.88rem; font-weight: 500;
    color: rgba(245, 245, 245, 0.6);
    text-decoration: none; background: none; border: none;
    cursor: pointer; white-space: nowrap;
    transition: color var(--transition-fast, 0.15s);
}
.insta-nav-link:hover,
.insta-nav-link.active { color: var(--white); text-decoration: none; }

/* Dropdown */
.insta-has-dropdown { position: relative; }
.insta-dropdown-menu {
    display: none;
    position: absolute; top: 100%; left: 0;
    background: #0B1A24;
    border: 1px solid var(--insta-border);
    border-radius: var(--radius-sm);
    min-width: 210px; padding: var(--space-2) 0;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
    z-index: 100; list-style: none; margin: 0;
}
.insta-has-dropdown:hover .insta-dropdown-menu,
.insta-has-dropdown.open .insta-dropdown-menu { display: block; }
.insta-dropdown-item {
    display: flex; align-items: center; gap: var(--space-3);
    padding: var(--space-3) var(--space-5);
    font-family: var(--font-body); font-size: 0.85rem;
    color: rgba(245, 245, 245, 0.7); text-decoration: none;
    transition: all var(--transition-fast, 0.15s);
}
.insta-dropdown-item:hover { background: rgba(46, 230, 197, 0.08); color: var(--white); text-decoration: none; }
.insta-dropdown-item i { width: 16px; font-size: 0.82rem; color: var(--insta-teal); }
.insta-dropdown-divider { height: 1px; background: rgba(255, 255, 255, 0.07); margin: var(--space-2) 0; }
.insta-dropdown-item--logout { color: rgba(245, 245, 245, 0.5) !important; }
.insta-dropdown-item--logout:hover { color: rgba(239, 68, 68, 0.9) !important; background: rgba(239, 68, 68, 0.06) !important; }
.insta-dropdown-item--logout i { color: inherit !important; }

/* Auth actions */
.insta-nav-actions { display: flex; align-items: center; gap: var(--space-3); flex-shrink: 0; }
.insta-btn-login {
    font-family: var(--font-body); font-size: 0.85rem; font-weight: 600;
    color: rgba(245, 245, 245, 0.7); text-decoration: none;
    padding: var(--space-2) var(--space-4);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base, 0.2s);
}
.insta-btn-login:hover { color: var(--white); border-color: rgba(255, 255, 255, 0.25); text-decoration: none; }
.insta-btn-register {
    display: inline-flex; align-items: center; gap: var(--space-2);
    font-family: var(--font-body); font-size: 0.85rem; font-weight: 700;
    color: var(--black); background: var(--insta-teal); text-decoration: none;
    padding: var(--space-2) var(--space-4); border-radius: var(--radius-sm);
    transition: background var(--transition-base, 0.2s), box-shadow var(--transition-base, 0.2s);
}
.insta-btn-register:hover { background: #57f0d6; box-shadow: 0 6px 20px rgba(46, 230, 197, 0.3); text-decoration: none; }

/* User menu */
.insta-user-menu { position: relative; }
.insta-user-toggle {
    display: flex; align-items: center; gap: var(--space-2);
    background: none; border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-sm); padding: var(--space-1) var(--space-3);
    color: var(--white); cursor: pointer; font-family: var(--font-body); font-size: 0.85rem;
}
.insta-user-avatar {
    display: inline-flex; align-items: center; justify-content: center;
    width: 28px; height: 28px; border-radius: 50%;
    background: var(--insta-teal); color: var(--black); font-weight: 700; font-size: 0.8rem;
}
.insta-user-dropdown {
    display: none;
    position: absolute; top: calc(100% + 8px); right: 0;
    background: #0B1A24; border: 1px solid var(--insta-border);
    border-radius: var(--radius-sm); min-width: 220px; padding: var(--space-2) 0;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5); list-style: none; margin: 0; z-index: 100;
}
.insta-user-menu.open .insta-user-dropdown { display: block; }

/* Hamburger */
.insta-nav-hamburger {
    display: none; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer;
    padding: var(--space-2); margin-left: auto;
}
.insta-nav-hamburger span {
    display: block; width: 24px; height: 2px;
    background: var(--white); transition: all var(--transition-base, 0.2s);
}

/* ════════════════════════════════════════════════════════════
   SHARED COMPONENTS
═══════════════════════════════════════════════════════════════ */
.insta-section { padding: var(--space-12, 5rem) 0; }
.insta-section--alt { background: var(--insta-card); }

.insta-eyebrow {
    font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.18em; color: var(--insta-teal);
    margin-bottom: var(--space-3);
}
.insta-section-title {
    font-family: var(--font-display); font-size: clamp(1.7rem, 4vw, 2.6rem);
    font-weight: 900; color: var(--white); line-height: 1.1; margin: 0 0 var(--space-4);
}
.insta-section-sub {
    font-family: var(--font-body); font-size: 1.02rem; line-height: 1.6;
    color: rgba(245, 245, 245, 0.65); max-width: 640px;
}
/* Flexbox centering — robust where text-align / margin-auto inheritance fails
   on max-width <p> children (Cabstates audit, June 2026). */
.insta-section-head--center { display: flex; flex-direction: column; align-items: center; text-align: center; }

/* Buttons */
.insta-btn {
    display: inline-flex; align-items: center; gap: var(--space-2);
    font-family: var(--font-body); font-weight: 700; font-size: 0.95rem;
    padding: var(--space-3) var(--space-6); border-radius: var(--radius-sm);
    text-decoration: none; cursor: pointer; border: none;
    transition: all var(--transition-base, 0.2s);
}
.insta-btn--primary { background: var(--insta-teal); color: var(--black); }
.insta-btn--primary:hover { background: #57f0d6; box-shadow: 0 8px 24px rgba(46, 230, 197, 0.3); text-decoration: none; }
.insta-btn--gold { background: var(--yellow); color: var(--black); }
.insta-btn--gold:hover { background: #ffe34d; text-decoration: none; }
.insta-btn--ghost { background: transparent; color: var(--white); border: 1px solid var(--insta-border); }
.insta-btn--ghost:hover { border-color: var(--insta-teal); color: var(--insta-teal); text-decoration: none; }

/* Card */
.insta-card {
    background: var(--insta-card); border: 1px solid var(--insta-border);
    border-radius: var(--radius-md, 12px); padding: var(--space-6);
    transition: transform var(--transition-base, 0.2s), border-color var(--transition-base, 0.2s);
}
.insta-card:hover { transform: translateY(-4px); border-color: var(--insta-teal); }

/* ════════════════════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
    .insta-nav-hamburger { display: flex; }
    .insta-nav-product { gap: var(--space-3); }
    .insta-nav-links {
        display: none;
        position: absolute; top: 72px; left: 0; right: 0;
        flex-direction: column; align-items: stretch;
        background: #0A0A0A; border-bottom: 1px solid var(--insta-border);
        padding: var(--space-3) var(--space-4);
    }
    .insta-nav-links.is-open { display: flex; }
    .insta-dropdown-menu { position: static; box-shadow: none; border: none; background: transparent; padding-left: var(--space-4); }
    .insta-has-dropdown:hover .insta-dropdown-menu { display: none; }
    .insta-has-dropdown.open .insta-dropdown-menu { display: block; }
}

@media (max-width: 600px) {
    .insta-nav-brand-text { display: none; }
    .insta-btn-login { display: none; }
}