/* ================================================================
   FÁLCON SYSTEMS v3.1 — COMPONENTS
   Buttons · Nav · Forms · Modals · Toasts · Skeleton
   Audit applied: touch targets, border contrast, CORE color, btn-lg
   ================================================================ */

/* ============================================================ BUTTONS */
/* Base — min-height 44px satisfies WCAG 2.5.5 touch target (audit §4) */
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--ff-head);font-weight:600;font-size:.88rem;letter-spacing:.12em;text-transform:uppercase;padding:12px 28px;border-radius:var(--r);transition:var(--t);white-space:nowrap;min-height:44px;}
.btn-copper{background:var(--copper);color:var(--white);}
.btn-copper:hover{background:var(--copper-l);transform:translateY(-1px);}
.btn-copper:disabled{opacity:.5;cursor:not-allowed;transform:none;}
/* btn-outline: border upgraded to --g5 for better contrast over --g3 backgrounds (audit §4) */
.btn-outline{border:1px solid var(--g5);color:var(--titanium);}
.btn-outline:hover{border-color:var(--copper);color:var(--copper);}
.btn-ghost{color:var(--titanium);font-size:.8rem;padding:8px 14px;}
.btn-ghost:hover{color:var(--white);}
/* Size variants */
.btn-sm{padding:8px 18px;font-size:.78rem;min-height:36px;}
.btn-lg{padding:16px 40px;font-size:1rem;letter-spacing:.1em;}
/* Color variants */
.btn-green{background:var(--green);color:var(--white);}
.btn-green:hover{background:#5aaa70;}
.btn-red{background:var(--red);color:var(--white);}
.btn-red:hover{background:#b92a40;}
.btn-navy{background:var(--navy);color:var(--white);}
.btn-navy:hover{background:var(--navy-l);}

/* ============================================================ NAV */
#nav{position:fixed;top:0;left:0;right:0;z-index:800;height:var(--nav-h);display:flex;align-items:center;transition:var(--t);}
#nav.scrolled{background:rgba(13,13,13,.95);border-bottom:1px solid var(--g4);backdrop-filter:blur(16px);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;}
.nav-logo{display:flex;align-items:center;gap:10px;cursor:pointer;flex-shrink:0;}
.nav-logo-mark{width:34px;height:34px;}
.nav-logo-text{font-family:var(--ff-head);font-weight:800;font-size:1.2rem;letter-spacing:.06em;text-transform:uppercase;color:var(--white);line-height:1;}
.nav-logo-text span{color:var(--copper);}
.nav-links{display:flex;align-items:center;gap:.15rem;}
.nav-link{font-family:var(--ff-head);font-weight:600;font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;color:var(--titanium);padding:8px 12px;border-radius:var(--r);transition:var(--t);cursor:pointer;}
.nav-link:hover,.nav-link.active{color:var(--white);}
.nav-units{display:flex;align-items:center;gap:4px;}
.nav-unit{font-family:var(--ff-mono);font-size:.65rem;letter-spacing:.15em;text-transform:uppercase;padding:5px 9px;border-radius:var(--r);border:1px solid transparent;transition:var(--t);cursor:pointer;background:none;}

/* UAS unit — copper */
.nav-unit.s{color:var(--copper);}
.nav-unit.s:hover,.nav-unit.s.active{border-color:var(--copper);background:rgba(160,82,45,.1);color:var(--copper);}

/* CORE unit — titanium-l (migrated from teal per brand manual) (audit §12) */
.nav-unit.c{color:var(--core);}
.nav-unit.c:hover,.nav-unit.c.active{border-color:var(--core);background:var(--core-soft);color:var(--core);}

/* MEDIA unit — titanium */
.nav-unit.m{color:var(--titanium);}
.nav-unit.m:hover,.nav-unit.m.active{border-color:var(--titanium);background:rgba(148,149,153,.07);color:var(--titanium);}

.nav-right{display:flex;align-items:center;gap:6px;}
.nav-hamburger{display:none;flex-direction:column;gap:5px;padding:8px;}
.nav-hamburger span{display:block;width:22px;height:1.5px;background:var(--titanium);transition:var(--t);}

/* Mobile menu */
.mob-menu{display:none;position:fixed;inset:0;z-index:700;background:var(--graphite);padding:calc(var(--nav-h)+1.5rem) 1.5rem 2rem;flex-direction:column;overflow-y:auto;}
.mob-menu.open{display:flex;}
.mob-item{font-family:var(--ff-head);font-weight:700;font-size:2.5rem;text-transform:uppercase;color:var(--white);border-bottom:1px solid var(--g4);padding:1rem 0;cursor:pointer;}
.mob-unit{font-family:var(--ff-mono);font-size:.9rem;letter-spacing:.15em;padding:.75rem 0;border-bottom:1px solid var(--g4);cursor:pointer;}

/* ============================================================ FORMS */
.form{display:flex;flex-direction:column;gap:1.15rem;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem;}
.fg{display:flex;flex-direction:column;gap:6px;}
.fg label{font-family:var(--ff-mono);font-size:.6rem;letter-spacing:.14em;text-transform:uppercase;color:var(--titanium-d);}
/* fc: border upgraded to --g5 for better contrast over --g3 (audit §4) */
.fc{background:var(--g3);border:1px solid var(--g5);border-radius:var(--r);padding:11px 14px;color:var(--white);font-size:.88rem;outline:none;width:100%;transition:var(--t);}
.fc:focus{border-color:var(--copper);}
.fc::placeholder{color:var(--titanium-d);}
.fc:disabled{opacity:.5;cursor:not-allowed;}
/* Error state — inline validation (audit §9) */
.fc.error{border-color:var(--red);}
.fc.error:focus{border-color:var(--red);outline:2px solid rgba(155,35,53,.25);outline-offset:0;}
textarea.fc{resize:vertical;min-height:110px;line-height:1.6;}
select.fc{appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 5 5-5z' fill='%236A6B70'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:30px;}
.form-msg{display:none;padding:10px 14px;border-radius:var(--r);font-size:.82rem;}
.form-msg.ok{display:block;background:rgba(74,140,92,.12);border:1px solid var(--green);color:#6dba85;}
.form-msg.err{display:block;background:rgba(155,35,53,.12);border:1px solid var(--red);color:#d96070;}

/* ============================================================ REVIEW FORM */
.review-section{background:var(--g2);border-top:1px solid var(--g4);}
.review-form-wrap{max-width:640px;margin:0 auto;}
.review-stars-input{display:flex;gap:8px;margin-bottom:1.5rem;}
/* Star buttons: min 44px touch target */
.star-btn{font-size:1.5rem;color:var(--g5);transition:var(--t);cursor:pointer;background:none;border:none;padding:6px;min-width:44px;min-height:44px;display:flex;align-items:center;justify-content:center;}
.star-btn.active,.star-btn:hover{color:var(--copper);}

/* ============================================================ SKELETON / EMPTY */
.skeleton{background:linear-gradient(90deg,var(--g3) 25%,var(--g4) 50%,var(--g3) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}
.skel-card{height:220px;border-radius:var(--r-md);}
.empty-state{text-align:center;padding:4rem 2rem;color:var(--titanium-d);}
.empty-state-icon{font-size:3rem;margin-bottom:1rem;opacity:.3;}
.empty-state-text{font-family:var(--ff-mono);font-size:.7rem;letter-spacing:.15em;text-transform:uppercase;}

/* ============================================================ TOAST */
#toasts{position:fixed;bottom:1.5rem;right:1.5rem;z-index:9999;display:flex;flex-direction:column;gap:8px;}
.toast{padding:10px 16px;background:var(--g3);border:1px solid var(--g4);border-radius:var(--r-md);font-size:.8rem;color:var(--white);display:flex;align-items:center;gap:10px;min-width:230px;animation:tIn .3s ease;box-shadow:0 8px 30px rgba(0,0,0,.5);}
.toast.ok{border-left:3px solid var(--green);}
.toast.err{border-left:3px solid var(--red);}
.toast.info{border-left:3px solid var(--copper);}
@keyframes tIn{from{opacity:0;transform:translateX(12px)}to{opacity:1;transform:translateX(0)}}

/* ============================================================ MODAL */
.modal-overlay{display:none;position:fixed;inset:0;z-index:2500;background:rgba(0,0,0,.8);backdrop-filter:blur(4px);align-items:center;justify-content:center;padding:1.5rem;}
.modal-overlay.open{display:flex;}
.modal{background:var(--g3);border:1px solid var(--g4);border-radius:var(--r-md);width:100%;max-width:640px;max-height:90vh;display:flex;flex-direction:column;box-shadow:0 24px 64px rgba(0,0,0,.9);}
.modal-hd{padding:1.25rem 1.5rem;border-bottom:1px solid var(--g4);display:flex;align-items:center;justify-content:space-between;}
.modal-title{font-family:var(--ff-head);font-weight:700;font-size:1.05rem;text-transform:uppercase;color:var(--white);}
.modal-bd{padding:1.5rem;overflow-y:auto;flex:1;}
.modal-ft{padding:1.25rem 1.5rem;border-top:1px solid var(--g4);display:flex;justify-content:flex-end;gap:8px;}
.modal-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem;}
.modal-mg{margin-bottom:.9rem;}
.review-detail-text{font-size:.9rem;color:var(--titanium-l);line-height:1.75;background:var(--g2);border-left:2px solid var(--copper);padding:1rem 1.25rem;border-radius:var(--r);margin:1rem 0;}
.review-detail-meta{display:grid;grid-template-columns:1fr 1fr;gap:.75rem;font-family:var(--ff-mono);font-size:.65rem;}
.rdm-label{color:var(--copper);letter-spacing:.12em;text-transform:uppercase;margin-bottom:2px;}
.rdm-val{color:var(--titanium-l);}

/* ============================================================ RESPONSIVE — COMPONENTS */
@media(max-width:900px){
  .form-row{grid-template-columns:1fr;}
  .nav-links,.nav-units,.nav-right .btn-outline{display:none;}
  .nav-hamburger{display:flex;}
  .modal-row{grid-template-columns:1fr;}
}
@media(max-width:640px){
  .review-detail-meta{grid-template-columns:1fr;}
  .btn{min-height:48px;}
}