/* style.css - "Dynamic Power & Precision" Design */

/* --- CSS Variables --- */
:root {
    --color-text-dpf: #1A1A1A; /* Near Black for readability */
    --color-background-dpf: #FFFFFF; /* White */
    --color-primary-dark-dpf: #1A3464; /* Darker Indigo/Blue */
    --color-primary-medium-dpf: #373E8F; /* Deep Indigo/Blue */
    --color-accent-yellow-dpf: #ffe434; /* Bright Yellow */
    --color-accent-yellow-hover-dpf: #FFD900; /* Slightly Darker Yellow */
    --color-accent-red-dpf: #EB0000; /* Bright Red */
    --color-text-on-dark-dpf: #FFFFFF; /* White */
    --color-text-on-yellow-dpf: #1A1A1A; /* Black/Dark for yellow bg */
    --color-border-dpf: #D1D5DB; /* Light Grey for subtle borders */
    --color-section-bg-alt-dpf: #F0F4F8; /* Very Light Cool Grey */
    
    /* System font stack for maximum performance */
    --font-family-dpf: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    
    --container-max-width-dpf: 1120px; 
    --spacing-base-dpf: 1rem; 
    --border-radius-dpf: 4px; 
}

/* --- Global Resets & Base --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; line-height: 1.65; }
body {
    font-family: var(--font-family-dpf);
    color: var(--color-text-dpf);
    background-color: var(--color-background-dpf);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-content-dpf { flex-grow: 1; }

.container-dpf {
    width: 90%;
    max-width: var(--container-max-width-dpf);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-base-dpf);
    padding-right: var(--spacing-base-dpf);
}

/* Accessibility: Skip Link */
.skip-link-dpf { 
    position: absolute; 
    transform: translateY(-300%); 
    left: 0.5rem; 
    background: var(--color-accent-yellow-dpf); 
    color: var(--color-text-on-yellow-dpf); 
    padding: 0.5em 1em; 
    z-index: 10001; 
    text-decoration: none; 
    transition: transform 0.25s ease-out; 
    font-weight: 600;
    border-radius: 0 0 var(--border-radius-dpf) var(--border-radius-dpf);
    border: 1px solid var(--color-text-dpf);
}
.skip-link-dpf:focus { transform: translateY(0.5rem); }

/* Accessibility: Focus Styles */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2.5px solid var(--color-accent-yellow-dpf); 
    outline-offset: 2px;
    box-shadow: 0 0 0 2px var(--color-background-dpf), 0 0 0 4px var(--color-accent-yellow-dpf);
}

/* --- Typography --- */
h1, h2, h3 {
    font-family: var(--font-family-dpf); 
    font-weight: 700; 
    line-height: 1.2;
    color: var(--color-primary-medium-dpf); /* Deep Indigo/Blue for headings */
    margin-bottom: calc(var(--spacing-base-dpf) * 1.3);
}
.logo-text-dpf { 
    font-family: var(--font-family-dpf);
    font-weight: 800; 
    color: var(--color-primary-medium-dpf);
}
h1 { font-size: clamp(2rem, 5.5vw, 2.7rem); letter-spacing: -0.5px; text-transform: uppercase; }
h2 { font-size: clamp(1.7rem, 4.5vw, 2.3rem); text-align: center; margin-bottom: calc(var(--spacing-base-dpf) * 2.2); border-bottom: 2px solid var(--color-accent-yellow-dpf); padding-bottom: calc(var(--spacing-base-dpf)*0.75); display: inline-block; }
.services-dpf h2, .why-choose-us-dpf h2 { display: block; text-align: center; } /* Ensure h2 in sections are centered */

h3 { font-size: clamp(1.25rem, 3.2vw, 1.5rem); color: var(--color-primary-medium-dpf); font-weight: 700; margin-bottom: calc(var(--spacing-base-dpf) * 0.7); }

/* --- Header --- */
.site-header-dpf { 
    background-color: var(--color-primary-dark-dpf); /* Darker Indigo/Blue header */
    color: var(--color-text-on-dark-dpf);
    padding: calc(var(--spacing-base-dpf) * 0.9) 0;
    border-bottom: 3px solid var(--color-accent-yellow-dpf); /* Yellow accent */
}
.header-grid-dpf { display: flex; justify-content: space-between; align-items: center; } 
.logo-text-dpf { font-size: clamp(1.5rem, 4vw, 1.8rem); text-decoration: none; color: var(--color-accent-yellow-dpf); text-transform: uppercase; }
.header-phone-dpf { font-size: clamp(1rem, 2.8vw, 1.2rem); font-weight: 700; color: var(--color-background-dpf); text-decoration: none; padding: 0.3rem 0; }
.header-phone-dpf:hover { color: var(--color-accent-yellow-dpf); }

/* --- Hero Section --- */
.hero-dpf { 
    background-color: var(--color-primary-medium-dpf); /* Deep Indigo/Blue background */
    color: var(--color-text-on-dark-dpf); /* White text */
    padding: calc(var(--spacing-base-dpf) * 4) 0; 
    text-align: center;
}
.hero-dpf h1 { color: var(--color-accent-yellow-dpf); /* Yellow H1 */ }
.hero-subtitle-dpf { font-size: clamp(1.15rem, 3vw, 1.3rem); margin-bottom: calc(var(--spacing-base-dpf) * 1.5); max-width: 720px; margin-left: auto; margin-right: auto; opacity: 0.95; line-height: 1.6;}
.hero-problem-dpf { font-size: 1.1rem; margin-bottom: calc(var(--spacing-base-dpf)*1.8); opacity: 0.9; max-width: 700px; margin-left: auto; margin-right: auto;}
.hero-actions-dpf { margin-top: calc(var(--spacing-base-dpf) * 2.2); } 

/* --- Buttons --- */
.button-dpf { 
    display: inline-block;
    padding: calc(var(--spacing-base-dpf) * 0.9) calc(var(--spacing-base-dpf) * 2.2); 
    text-decoration: none;
    border-radius: var(--border-radius-dpf);
    font-weight: 700; 
    font-family: var(--font-family-dpf);
    transition: all 0.2s ease;
    cursor: pointer;
    border: 2px solid transparent;
    font-size: clamp(1rem, 2.5vw, 1.1rem);
    text-align: center;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}
.button-accent-dpf { 
    background-color: var(--color-accent-yellow-dpf); /* Yellow */
    color: var(--color-text-on-yellow-dpf); /* Black text */
    border-color: var(--color-accent-yellow-dpf);
    box-shadow: 0 3px 5px rgba(0,0,0,0.15);
}
.button-accent-dpf:hover, .button-accent-dpf:focus {
    background-color: var(--color-accent-yellow-hover-dpf); 
    border-color: var(--color-accent-yellow-hover-dpf);
    transform: translateY(-2px);
    box-shadow: 0 5px 8px rgba(0,0,0,0.2);
}
.button-secondary-dpf { 
    background-color: transparent;
    color: var(--color-accent-yellow-dpf); 
    border-color: var(--color-accent-yellow-dpf); 
}
.button-secondary-dpf:hover, .button-secondary-dpf:focus {
    background-color: var(--color-accent-yellow-dpf);
    color: var(--color-text-on-yellow-dpf);
}
.button-large-dpf {
    font-size: clamp(1.1rem, 3vw, 1.25rem);
    padding: calc(var(--spacing-base-dpf) * 1.1) calc(var(--spacing-base-dpf) * 2.8);
}

/* --- Services Section --- */
.services-dpf { padding: calc(var(--spacing-base-dpf) * 3.5) 0; background-color: var(--color-background-dpf); } 
.section-intro-dpf { text-align:center; max-width:750px; margin:-1.5rem auto 2.5rem auto; color: var(--color-text-dpf); opacity: 0.95;}
.services-grid-dpf { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: calc(var(--spacing-base-dpf) * 1.8); } 
.service-card-dpf { 
    background-color: var(--color-background-dpf); 
    padding: calc(var(--spacing-base-dpf) * 1.8);
    border: 1px solid var(--color-border-dpf);
    border-radius: var(--border-radius-dpf);
    box-shadow: 0 4px 8px rgba(0,0,0,0.05);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.service-card-dpf:hover {
    transform: translateY(-5px);
    box-shadow: 0 7px 14px rgba(0,0,0,0.08);
}
.service-card-title-dpf { font-weight: 700; color: var(--color-primary-medium-dpf);} 
.service-card-dpf p { font-size: clamp(0.95rem, 2.5vw, 1rem); line-height: 1.7; }

/* --- Why Choose Us Section --- */
.why-choose-us-dpf { padding: calc(var(--spacing-base-dpf) * 3.5) 0; background-color: var(--color-section-bg-alt-dpf); } 
.why-choose-us-dpf h2 { color: var(--color-primary-medium-dpf); border-color: var(--color-primary-medium-dpf); }
.benefits-list-dpf { 
    list-style: none; padding: 0; 
    max-width: 800px; margin: 0 auto calc(var(--spacing-base-dpf) * 2.2) auto;
    columns: 1;
}
@media (min-width: 600px) { 
    .benefits-list-dpf { columns: 2; column-gap: calc(var(--spacing-base-dpf) * 2.5); }
}
.benefits-list-dpf li {
    font-size: clamp(1rem, 2.8vw, 1.1rem); 
    color: var(--color-text-dpf); 
    margin-bottom: calc(var(--spacing-base-dpf) * 1);
    padding-left: calc(var(--spacing-base-dpf) * 2);
    position: relative;
    break-inside: avoid-column; 
}
.benefits-list-dpf strong { color: var(--color-primary-medium-dpf); }
.benefits-list-dpf li::before {
    content: '✓'; 
    position: absolute; left: 0; top: 3px; /* Adjusted for system font */
    color: var(--color-accent-red-dpf); /* Red check for strong highlight */
    font-size: 1.2em; 
    font-weight: 700;
}
.why-cta-dpf { text-align: center; } 

/* --- Feature Image Section --- */
.feature-image-section-dpf { padding: calc(var(--spacing-base-dpf) * 3) 0; background-color: var(--color-background-dpf); } 
.feature-content-dpf { 
    display: flex; 
    flex-wrap: wrap; 
    align-items: center; 
    gap: calc(var(--spacing-base-dpf) * 2.5);
    background-color: var(--color-section-bg-alt-dpf); /* Light grey background for this block */
    padding: calc(var(--spacing-base-dpf) * 2.5);
    border-radius: var(--border-radius-dpf);
}
.feature-img-dpf {
    display: block;
    max-width: 100%;
    height: auto;
    width: 100%; 
    max-width: 600px; 
    border-radius: var(--border-radius-dpf);
    box-shadow: 0 6px 12px rgba(0,0,0,0.07);
    margin-bottom: var(--spacing-base-dpf); 
}
.feature-text-dpf { flex: 1; min-width: 280px; text-align: left;} 
.feature-text-dpf h2 { text-align: left; border-bottom: none; padding-bottom: 0; margin-bottom: var(--spacing-base-dpf); color: var(--color-primary-medium-dpf); }
.feature-text-dpf p { margin-bottom: calc(var(--spacing-base-dpf) * 1.2); font-size: 1.05rem; }
.feature-caption-dpf { display:block; margin-top: calc(var(--spacing-base-dpf) * 0.8); font-size: clamp(0.9rem, 2.5vw, 0.95rem); color: var(--color-text-dpf); opacity: 0.85; text-align: center; }


/* --- Footer --- */
.site-footer-dpf { 
    background-color: var(--color-primary-dark-dpf); /* Darkest Blue footer */
    color: var(--color-text-on-dark-dpf); /* White text */
    text-align: center;
    padding: calc(var(--spacing-base-dpf) * 2.5) 0;
    margin-top: auto; 
}
.site-footer-dpf p { margin-bottom: calc(var(--spacing-base-dpf) * 0.5); font-size: clamp(0.9rem, 2.2vw, 0.95rem); opacity: 0.9;}
.footer-link-dpf { color: var(--color-accent-yellow-dpf); text-decoration: none; font-weight: 600; } 
.footer-link-dpf:hover { text-decoration: underline; }
.footer-nav-dpf { margin-top: var(--spacing-base-dpf); } 

/* EXTREMELY SUBTLE FOOTER LINK FOR service-directory.html */
.footer-directory-link-dpf { 
    font-size: 0.5rem !important; 
    color: #2A4375 !important; /* Very dark blue, extremely low contrast against #1A3464 footer bg */
    text-decoration: none !important;
    opacity: 0.15 !important;      
    display: inline-block !important; 
    padding: 0 !important; 
    margin: 0 !important; 
    letter-spacing: 0.1px;
    transition: opacity 0.1s ease;
}
.footer-directory-link-dpf:hover {
    opacity: 0.25 !important;      
    text-decoration: none !important; 
    color: #304C80 !important; 
}
.footer-directory-link-dpf:focus-visible { 
    position: relative; 
    z-index: 1;
    opacity: 1 !important;        
    text-decoration: underline !important; 
    color: var(--color-accent-yellow-dpf) !important; /* Yellow to pop on dark background */
    background-color: var(--color-primary-dark-dpf) !important; /* Footer background for contrast */
    outline: 2px solid var(--color-accent-yellow-dpf) !important; 
    outline-offset: 2px !important;
    font-size: 0.75rem !important; 
    padding: 2px 4px !important;
    border-radius: 2px; 
}


/* --- Sticky CTA for Mobile --- */
.sticky-cta-dpf-mobile { 
    display: none; position: fixed; bottom: 0; left: 0; width: 100%;
    background-color: var(--color-accent-yellow-dpf); color: var(--color-text-on-yellow-dpf); text-align: center;
    padding: calc(var(--spacing-base-dpf) * 0.95) 0; font-size: clamp(1.05rem, 3vw, 1.2rem); font-weight: 700;
    text-decoration: none; z-index: 1000; box-shadow: 0 -2px 7px rgba(0,0,0,0.15);
    text-transform: uppercase; letter-spacing: 0.5px;
}

/* --- Responsive Design Adjustments --- */
@media (max-width: 767px) {
    .header-grid-dpf { flex-direction: column; text-align: center;}
    .logo-text-dpf { margin-bottom: calc(var(--spacing-base-dpf) * 0.75); }
    .header-phone-dpf { margin-top: calc(var(--spacing-base-dpf)*0.3); }
    .sticky-cta-dpf-mobile { display: block; }
    body { padding-bottom: 60px; } 
    h1 { font-size: clamp(1.9rem, 5.5vw, 2.4rem); }
    h2 { font-size: clamp(1.6rem, 4.5vw, 2rem); }
    .feature-content-dpf { flex-direction: column; text-align: center; }
    .feature-img-dpf { margin-bottom: var(--spacing-base-dpf); margin-right: 0; }
}

@media (min-width: 768px) {
    .feature-content-dpf { text-align: left; }
    .services-grid-dpf { grid-template-columns: repeat(2, 1fr); } 
}