/* =========================================
   1. CORE VARIABLES & RESET
   ========================================= */
:root {
    /* Brand Colors */
    --medical-blue: #0B2545;  /* Deep Navy */
    --medical-dark: #06162a;  /* Darker Navy for contrast */
    --growth-green: #2ECC71;  /* The "Revenue" Green */
    --alert-red: #E74C3C;     /* For errors/warnings */
    
    /* Text Colors */
    --text-white: #ffffff;
    --text-gray: #b0b8c5;

    /* Fonts */
    --font-heading: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-body: 'Georgia', serif;
}

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

body {
    font-family: var(--font-heading);
    background-color: var(--medical-blue); /* Global Dark Background */
    color: var(--text-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s ease;
}

ul {
    list-style: none;
}

/* =========================================
   2. UTILITIES & LAYOUT
   ========================================= */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography Utilities */
h1, h2, h3, h4 {
    font-weight: 700;
    letter-spacing: -0.5px;
}

p {
    font-family: var(--font-body);
    color: var(--text-gray);
}

.text-green { color: var(--growth-green) !important; }
.text-blue { color: var(--medical-blue) !important; }
.section-title {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--growth-green);
    margin-bottom: 15px;
    font-weight: 700;
}

/* Buttons */
.btn-green {
    background: var(--growth-green);
    color: #fff;
    padding: 15px 35px;
    font-weight: 700;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: inline-block;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(46, 204, 113, 0.3);
    font-family: var(--font-heading);
}

.btn-green:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(46, 204, 113, 0.5);
    background: #27ae60;
}

/* =========================================
   3. HEADER & NAVIGATION
   ========================================= */
header {
    background: rgba(11, 37, 69, 0.95); /* Slight transparency */
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.nav-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 800;
    color: #fff;
    letter-spacing: -1px;
}

.logo span {
    color: var(--growth-green);
}

.nav-links a {
    margin-left: 25px;
    font-weight: 500;
    font-size: 14px;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-links a:hover {
    color: #fff;
}

/* =========================================
   4. HERO SECTION
   ========================================= */
.hero {
    padding: 100px 0 80px;
    text-align: center;
}

.hero h1 {
    font-size: 52px;
    max-width: 900px;
    margin: 0 auto 20px;
    line-height: 1.1;
    color: #fff;
}

.hero p {
    font-size: 20px;
    max-width: 650px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

/* =========================================
   5. BOTTLENECK CARDS (The Grid-3)
   ========================================= */
.bottleneck-section {
    padding: 80px 0;
    background: var(--medical-dark); /* Slightly darker for contrast */
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.card {
    background: rgba(255, 255, 255, 0.03); /* Glass effect */
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 40px 30px;
    border-radius: 8px;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--growth-green);
    background: rgba(255, 255, 255, 0.06);
}

.card .icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    display: block;
}

.card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #fff;
}

.card p {
    font-size: 16px;
    margin-bottom: 20px;
}

/* =========================================
   6. AUDIT FORM STYLES
   ========================================= */
.form-box {
    box-shadow: 0 20px 50px rgba(0,0,0,0.3);
}

input, select {
    font-family: var(--font-heading);
    transition: 0.3s;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--growth-green) !important;
    background: rgba(255,255,255,0.1) !important;
}

/* =========================================
   7. CASE STUDY CARDS
   ========================================= */
.case-card h2 {
    font-size: 32px;
    color: #fff;
}

.case-card strong {
    color: #fff;
    display: block;
    margin-bottom: 5px;
    font-family: var(--font-heading);
}

/* =========================================
   8. FOOTER
   ========================================= */
footer {
    background: #04101e; /* Almost black */
    color: #fff;
    padding: 60px 0;
    font-size: 14px;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}

.footer-brand h3 {
    margin-bottom: 20px;
    color: #fff;
}

.footer-col h4 {
    color: #fff;
    margin-bottom: 20px;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 1px;
    opacity: 0.5;
}

.footer-col li {
    margin-bottom: 12px;
}

.footer-col a:hover {
    color: var(--growth-green);
}

/* =========================================
   9. MOBILE RESPONSIVENESS
   ========================================= */
@media (max-width: 768px) {
    .nav-links { display: none; } /* Or add a hamburger menu later */
    
    .hero h1 { font-size: 36px; }
    
    .grid-3 { grid-template-columns: 1fr; }
    
    .case-card {
        flex-direction: column !important;
        text-align: left;
    }
    
    .case-card > div { width: 100%; }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}