/* ============================================================
   base.css — SPU-LMS 2.0 BOLD
   Design coraggioso: sfondo slate, accenti oro vividi, 
   tipografia forte, animazioni orchestrate.
   ============================================================ */

:root {
  /* Brand primari */
  --color-navy:        #1e3a6e;
  --color-navy-dark:   #0f2044;
  --color-navy-mid:    #1a3260;
  --color-navy-light:  #2a4f96;
  --color-gold:        #c9a84c;
  --color-gold-light:  #e8c96a;
  --color-gold-dark:   #a07830;
  --color-gold-pale:   rgba(201,168,76,0.15);

  /* UI */
  --color-white:       #ffffff;
  --color-bg:          #f0f3fa;
  --color-bg-card:     #ffffff;
  --color-surface:     #f8f9fc;
  --color-border:      #dde3f0;
  --color-border-light:#eef0f8;

  /* Testo */
  --color-text:        #111827;
  --color-text-muted:  #6b7280;
  --color-text-light:  #9ca3af;

  /* SPU26 multicolor — più saturi */
  --color-red:    #e74c3c;
  --color-green:  #2ecc71;
  --color-blue:   #3498db;
  --color-yellow: #f1c40f;
  --color-purple: #9b59b6;
  --color-teal:   #1abc9c;

  /* Semantici */
  --color-success:    #2ecc71;
  --color-success-bg: #e8faf0;
  --color-error:      #e74c3c;
  --color-error-bg:   #fef0ee;
  --color-warning:    #f39c12;
  --color-warning-bg: #fef9ec;
  --color-info:       #3498db;
  --color-info-bg:    #eaf4fb;

  /* Font */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-size-xs:   0.75rem;
  --font-size-sm:   0.875rem;
  --font-size-base: 1rem;
  --font-size-md:   1.125rem;
  --font-size-lg:   1.25rem;
  --font-size-xl:   1.5rem;
  --font-size-2xl:  1.875rem;
  --font-size-3xl:  2.25rem;
  --font-size-4xl:  3rem;

  --font-weight-light:    300;
  --font-weight-regular:  400;
  --font-weight-medium:   500;
  --font-weight-semibold: 600;
  --font-weight-bold:     700;
  --font-weight-extrabold:800;
  --font-weight-black:    900;

  --line-height-tight: 1.2;
  --line-height-base:  1.6;
  --line-height-loose: 1.8;

  --letter-spacing-tight:  -0.03em;
  --letter-spacing-normal:  0;
  --letter-spacing-wide:    0.04em;
  --letter-spacing-wider:   0.08em;
  --letter-spacing-widest:  0.14em;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* Radius */
  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   14px;
  --radius-xl:   20px;
  --radius-2xl:  28px;
  --radius-full: 9999px;

  /* Shadows — più profonde */
  --shadow-xs:   0 1px 3px rgba(15,32,68,0.08), 0 1px 2px rgba(15,32,68,0.04);
  --shadow-sm:   0 2px 8px rgba(15,32,68,0.10), 0 1px 3px rgba(15,32,68,0.06);
  --shadow-md:   0 6px 20px rgba(15,32,68,0.12), 0 2px 6px rgba(15,32,68,0.07);
  --shadow-lg:   0 12px 40px rgba(15,32,68,0.16), 0 4px 12px rgba(15,32,68,0.08);
  --shadow-xl:   0 20px 60px rgba(15,32,68,0.20), 0 8px 20px rgba(15,32,68,0.10);
  --shadow-gold: 0 4px 20px rgba(201,168,76,0.30);
  --shadow-navy: 0 4px 20px rgba(30,58,110,0.35);

  /* Transitions */
  --transition-fast:   140ms cubic-bezier(0.4,0,0.2,1);
  --transition-base:   220ms cubic-bezier(0.4,0,0.2,1);
  --transition-slow:   380ms cubic-bezier(0.4,0,0.2,1);
  --transition-bounce: 280ms cubic-bezier(0.34,1.56,0.64,1);
  --transition-spring: 350ms cubic-bezier(0.175,0.885,0.32,1.275);

  /* Z-index */
  --z-base:     1;
  --z-dropdown: 100;
  --z-navbar:   200;
  --z-modal:    300;
  --z-toast:    400;
  --z-loading:  500;
}

/* ─── Reset ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; }
a { color: var(--color-navy); text-decoration: none; }
a:hover { color: var(--color-navy-light); }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; }

/* ─── Tipografia ─── */
h1 { font-size: var(--font-size-3xl); font-weight: var(--font-weight-black); line-height: var(--line-height-tight); letter-spacing: var(--letter-spacing-tight); color: var(--color-navy-dark); }
h2 { font-size: var(--font-size-2xl); font-weight: var(--font-weight-bold); line-height: var(--line-height-tight); color: var(--color-navy); }
h3 { font-size: var(--font-size-xl); font-weight: var(--font-weight-bold); color: var(--color-navy); }
h4 { font-size: var(--font-size-lg); font-weight: var(--font-weight-semibold); color: var(--color-navy); }
h5 { font-size: var(--font-size-md); font-weight: var(--font-weight-semibold); color: var(--color-text); }
p  { color: var(--color-text); line-height: var(--line-height-base); }
small { font-size: var(--font-size-xs); color: var(--color-text-muted); }
strong { font-weight: var(--font-weight-bold); }

/* ─── ANIMAZIONI ─── */
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInFast {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-24px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(24px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.92); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.7; transform: scale(0.95); }
}
/* shimmer rimosso: causava sfarfallio. Usa statCardIn invece. */
@keyframes gradientFlow {
  0%   { opacity: 0.85; }
  50%  { opacity: 1; }
  100% { opacity: 0.85; }
}
@keyframes borderPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(201,168,76,0); }
  50%       { box-shadow: 0 0 0 6px rgba(201,168,76,0.2); }
}
@keyframes countUp {
  from { opacity: 0; transform: scale(0.8) translateY(10px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
@keyframes ripple {
  to { transform: scale(4); opacity: 0; }
}

/* Classi */
.animate-in      { animation: fadeIn 0.5s both; }
.animate-in-fast { animation: fadeInFast 0.3s both; }
.animate-left    { animation: slideInLeft 0.4s both; }
.animate-right   { animation: slideInRight 0.4s both; }
.animate-down    { animation: slideDown 0.3s both; }
.animate-scale   { animation: scaleIn 0.3s var(--transition-bounce) both; }
.animate-float   { animation: fadeIn 0.5s both; } /* ex-float: loop rimosso */
.animate-pulse   { animation: fadeIn 0.5s both; } /* ex-pulse: loop rimosso */

.delay-100 { animation-delay: 0.1s; }
.delay-150 { animation-delay: 0.15s; }
.delay-200 { animation-delay: 0.2s; }
.delay-250 { animation-delay: 0.25s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }

/* ─── LOADING SCREEN ─── */
.app-loading {
  position: fixed; inset: 0;
  background: var(--color-navy-dark);
  display: flex; align-items: center; justify-content: center;
  z-index: var(--z-loading);
}
.loading-inner {
  display: flex; flex-direction: column;
  align-items: center; gap: var(--space-8);
}
.loading-logo {
  width: 200px; height: auto;
  animation: fadeIn 0.6s both;
  filter: drop-shadow(0 8px 32px rgba(201,168,76,0.5));
  /* NO float loop — causa sfarfallio */
  will-change: auto;
}
.loading-spinner {
  width: 44px; height: 44px;
  border: 3px solid rgba(255,255,255,0.15);
  border-top-color: var(--color-gold);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

/* ─── APP ROOT ─── */
.app-root { min-height: 100vh; }

/* ─── UTILITIES ─── */
.hidden   { display: none !important; }
.flex     { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.grid     { display: grid; }
.items-center    { align-items: center; }
.items-start     { align-items: flex-start; }
.justify-center  { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }
.text-xs    { font-size: var(--font-size-xs); }
.text-sm    { font-size: var(--font-size-sm); }
.text-center{ text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-muted); }
.text-navy  { color: var(--color-navy); }
.text-gold  { color: var(--color-gold); }
.font-bold  { font-weight: var(--font-weight-bold); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.uppercase  { text-transform: uppercase; letter-spacing: var(--letter-spacing-wider); }
.w-full     { width: 100%; }
.truncate   { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.p-4  { padding: var(--space-4); }
.p-6  { padding: var(--space-6); }
.p-8  { padding: var(--space-8); }
.rounded { border-radius: var(--radius-md); }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.cursor-pointer { cursor: pointer; }

:focus-visible { outline: 2px solid var(--color-gold); outline-offset: 3px; border-radius: var(--radius-sm); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; } }