/* ============================================
   Sales Performance - Da USP a UBR
   Tema blu/teal (business, performance)
   ============================================ */

:root {
    --color-bg: #0c1222;
    --color-bg-card: #141c2e;
    --color-surface: #1e2a42;
    
    --color-primary: #0ea5e9;
    --color-primary-dim: #0284c7;
    --color-accent: #06b6d4;
    
    --color-text: #e8f0fc;
    --color-text-muted: #94a8c4;
    --color-text-dim: #64789a;
    
    --color-border: #2d3d5c;
    --color-border-focus: #0ea5e9;
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
    
    --font-sans: 'Outfit', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --transition: 0.2s ease;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(14, 165, 233, 0.1), transparent),
        radial-gradient(ellipse 60% 40% at 100% 100%, rgba(6, 182, 212, 0.06), transparent);
    pointer-events: none;
    z-index: 0;
}

.app-container {
    position: relative;
    z-index: 1;
    max-width: 560px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    margin-bottom: 2rem;
    text-align: center;
}

.back-link {
    display: inline-block;
    font-size: 0.9rem;
    color: var(--color-primary);
    text-decoration: none;
    margin-bottom: 1rem;
    transition: opacity var(--transition);
}

.back-link:hover {
    opacity: 0.8;
}

.header-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 36px;
    height: 36px;
    color: var(--color-primary);
}

.logo h1 {
    font-size: 1.4rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.intro-card,
.content-card,
.pillars-card,
.programs-card,
.info-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}

.intro-card h2,
.content-card h2,
.pillars-card h2,
.programs-card h2 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.intro-card p,
.content-card p {
    margin: 0 0 0.75rem 0;
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

.intro-card p:last-of-type,
.content-card p:last-of-type {
    margin-bottom: 0;
}

.lang-note {
    font-size: 0.8rem !important;
    color: var(--color-text-dim) !important;
    font-style: italic;
    margin-top: 0.5rem !important;
}

/* Pilastri */
.pillars-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.pillars-list li {
    position: relative;
    padding-left: 1.25rem;
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

.pillars-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
}

.pillars-list li:last-child {
    margin-bottom: 0;
}

/* Programmi / Training */
.programs-card p {
    margin-bottom: 1rem;
}

.training-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-top: 1rem;
}

.training-card {
    padding: 1.25rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
}

.training-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--color-primary);
}

.training-tagline {
    font-size: 0.85rem !important;
    font-weight: 600;
    color: var(--color-accent) !important;
    margin-bottom: 0.5rem !important;
}

.training-card p:last-child {
    margin: 0;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.info-card h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.info-card p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.footer {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
    text-align: center;
    font-size: 0.8rem;
    color: var(--color-text-dim);
}

.footer a {
    color: var(--color-primary);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

@media (max-width: 480px) {
    .app-container { padding: 1.5rem 1rem; }
    .logo h1 { font-size: 1.2rem; }
}

:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}