/* css/style.css */

/* ==========================================================================
   CSS Variables & Strict Reset
   ========================================================================== */
:root {
    color-scheme: light;
    
    --primary-navy: #263F5B;
    --black: #111111;
    --white: #FFFFFF;
    --light-gray: #F4F6F8;
    --secondary-blue: #496783;
    --border-color: #E2E8F0;
    
    --font-primary: 'Inter', Helvetica, Arial, sans-serif;
    
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;
    
    --radius: 4px;
}

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

html {
    scroll-behavior: smooth;
    /* Redundant safety check matching inline HTML style */
    background-color: var(--white) !important;
}

body {
    font-family: var(--font-primary);
    color: var(--black);
    background-color: var(--white);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

a:hover, a:focus {
    color: var(--secondary-blue);
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--black);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

p {
    margin-bottom: var(--spacing-md);
    color: #333333;
}

.text-center { text-align: center; }
.section-title { margin-bottom: var(--spacing-lg); }

/* ==========================================================================
   Layout & Components
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-xxl) 0;
}

.bg-light { background-color: var(--light-gray); }

.bg-navy { 
    background-color: var(--primary-navy); 
    color: var(--white);
}
.bg-navy h1, .bg-navy h2, .bg-navy h3, .bg-navy p {
    color: var(--white);
}

/* ==========================================================================
   Strict Button Definitions (NO BASE TRANSITIONS)
   ========================================================================== */
.btn, 
button.btn, 
a.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius);
    cursor: pointer;
    font-family: var(--font-primary);
    text-decoration: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    user-select: none;
    /* CRITICAL FIX: Transitions removed from base class to prevent load-time color shifting */
}

/* Primary Button States */
.btn-primary, 
button.btn-primary, 
a.btn-primary {
    background-color: var(--primary-navy);
    color: var(--white) !important;
    border: 1px solid var(--primary-navy);
}

/* Apply transitions only on interaction states so initial render snaps instantly */
.btn-primary:hover,
button.btn-primary:hover,
a.btn-primary:hover,
.btn-primary:focus,
button.btn-primary:focus,
a.btn-primary:focus {
    background-color: var(--secondary-blue);
    border-color: var(--secondary-blue);
    color: var(--white) !important;
    transition: background-color 0.15s ease-in-out, border-color 0.15s ease-in-out;
}

.btn-primary:focus, 
button.btn-primary:focus, 
a.btn-primary:focus {
    outline: 2px solid var(--primary-navy);
    outline-offset: 2px;
}

.btn-primary:active, 
button.btn-primary:active, 
a.btn-primary:active {
    background-color: var(--black);
    border-color: var(--black);
    transition: none;
}

/* Secondary Button States */
.btn-secondary, 
button.btn-secondary, 
a.btn-secondary {
    background-color: var(--white);
    color: var(--primary-navy);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover,
button.btn-secondary:hover,
a.btn-secondary:hover,
.btn-secondary:focus, 
button.btn-secondary:focus, 
a.btn-secondary:focus {
    background-color: var(--light-gray);
    color: var(--primary-navy);
    transition: background-color 0.15s ease-in-out, color 0.15s ease-in-out;
}

.btn-secondary:focus, 
button.btn-secondary:focus, 
a.btn-secondary:focus {
    outline: 2px solid var(--primary-navy);
    outline-offset: 2px;
}

.btn-secondary:active, 
button.btn-secondary:active, 
a.btn-secondary:active {
    background-color: #E2E8F0;
    transition: none;
}

.btn:disabled,
button:disabled,
.btn.disabled {
    background-color: #E2E8F0 !important;
    color: #A0AEC0 !important;
    border-color: #E2E8F0 !important;
    cursor: not-allowed;
    opacity: 0.7;
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.navbar {
    background-color: var(--white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-navy);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-links a:not(.btn) {
    font-weight: 500;
    color: var(--black);
}

.nav-links a:not(.btn):hover,
.nav-links a:not(.btn):focus {
    color: var(--primary-navy);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--black);
    -webkit-appearance: none;
    appearance: none;
}

/* ==========================================================================
   Grid Layouts
   ========================================================================== */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.card {
    background-color: var(--white);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
}

/* ==========================================================================
   Forms
   ========================================================================== */
.form-container {
    background-color: var(--white);
    color: var(--black); 
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    max-width: 800px;
    margin: 0 auto;
}

.form-container h3, 
.form-container p {
    color: var(--black);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--black); 
}

input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-family: var(--font-primary);
    font-size: 1rem;
    background-color: var(--white);
    color: var(--black);
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

select {
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 40px;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-navy);
    box-shadow: 0 0 0 1px var(--primary-navy);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

.form-feedback {
    display: none;
    padding: var(--spacing-md);
    background-color: #E6F4EA;
    color: #137333;
    border: 1px solid #CEEAD6;
    border-radius: var(--radius);
    margin-top: var(--spacing-md);
    text-align: center;
    font-weight: 600;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    display: flex;
    align-items: center;
    min-height: 60vh;
    background-color: var(--light-gray);
    border-bottom: 1px solid var(--border-color);
}

.hero-content {
    max-width: 800px;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: var(--black);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-lg) 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer h4 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.footer p, .footer a {
    color: #A0AEC0;
    font-size: 0.9rem;
}

.footer a:hover, .footer a:focus {
    color: var(--white);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-bottom {
    border-top: 1px solid #333333;
    padding-top: var(--spacing-md);
    text-align: center;
    font-size: 0.85rem;
    color: #A0AEC0;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero {
        padding: var(--spacing-xl) 0;
    }
    
    h1 { font-size: 2rem; }
    
    .grid-2, .grid-3, .form-row, .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .hero-actions {
        flex-direction: column;
    }
}