@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;700&family=Nunito:wght@300;400;600&display=swap');

:root {
    --5ix-primary: #059669;
    --5ix-secondary: #047857;
    --5ix-accent: #f97316;
    --5ix-background: #fafaf9;
    --5ix-text: #1c1917;
    --5ix-muted: #78716c;
    --5ix-danger: #ef4444;
    --5ix-success: #22c55e;

    --bk-border-radius-sm: 4px;
    --bk-border-radius-md: 8px;
    --bk-border-radius-lg: 12px;

    --bk-spacing-xs: 8px;
    --bk-spacing-sm: 16px;
    --bk-spacing-md: 24px;
    --bk-spacing-lg: 48px;
    --bk-spacing-xl: 80px;
}

/* Base Styles & Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    font-family: 'Nunito', sans-serif;
    line-height: 1.6;
    color: var(--5ix-text);
    background-color: var(--5ix-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background-color: var(--5ix-primary);
    color: var(--5ix-background);
}

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

a {
    color: var(--5ix-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--5ix-accent);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'DM Sans', sans-serif;
    color: var(--5ix-text);
    line-height: 1.2;
    margin-bottom: var(--bk-spacing-sm);
    font-weight: 700;
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.05em;
}

h2 {
    font-size: 2.5rem;
    letter-spacing: -0.03em;
    margin-bottom: var(--bk-spacing-md);
}

h3 {
    font-size: 1.8rem;
    letter-spacing: -0.02em;
}

h4 {
    font-size: 1.4rem;
}

h5 {
    font-size: 1.2rem;
}

h6 {
    font-size: 1rem;
    text-transform: uppercase;
    color: var(--5ix-primary);
}

p {
    margin-bottom: var(--bk-spacing-sm);
    font-size: 1.1rem;
    color: var(--5ix-text);
}

small {
    font-size: 0.85rem;
    color: var(--5ix-muted);
}

/* Layout Utilities */
.bk-container {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--bk-spacing-sm);
    padding-right: var(--bk-spacing-sm);
}

.bk-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--bk-spacing-lg);
}

.bk-flex {
    display: flex;
    gap: var(--bk-spacing-md);
}

.bk-flex-col {
    flex-direction: column;
}

.bk-flex-center {
    justify-content: center;
    align-items: center;
}

.bk-text-center {
    text-align: center;
}

.bk-section {
    padding: var(--bk-spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

.bk-section:nth-of-type(even) {
    background-color: #f0f0ed;
}

.bk-section:nth-of-type(odd) {
    background-color: var(--5ix-background);
}

/* Buttons */
.bk-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1.2em 2.5em;
    border: none;
    border-radius: var(--bk-border-radius-sm);
    font-family: 'DM Sans', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.bk-btn-primary {
    background-color: var(--5ix-primary);
    color: var(--5ix-background);
    box-shadow: 0 4px 15px rgba(5, 150, 105, 0.3);
    border-bottom: 4px solid var(--5ix-secondary);
}

.bk-btn-primary:hover {
    background-color: var(--5ix-secondary);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(5, 150, 105, 0.4);
}

.bk-btn-primary:active {
    transform: translateY(1px);
    box-shadow: 0 2px 10px rgba(5, 150, 105, 0.2);
    border-bottom: 2px solid var(--5ix-secondary);
}

.bk-btn-secondary {
    background-color: var(--5ix-accent);
    color: var(--5ix-background);
    box-shadow: 0 4px 15px rgba(249, 115, 22, 0.3);
    border-bottom: 4px solid #c2410c;
}

.bk-btn-secondary:hover {
    background-color: #c2410c;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(249, 115, 22, 0.4);
}

.bk-btn-secondary:active {
    transform: translateY(1px);
    box-shadow: 0 2px 10px rgba(249, 115, 22, 0.2);
    border-bottom: 2px solid #c2410c;
}

.bk-btn-outline {
    background-color: transparent;
    color: var(--5ix-primary);
    border: 2px solid var(--5ix-primary);
}

.bk-btn-outline:hover {
    background-color: var(--5ix-primary);
    color: var(--5ix-background);
    box-shadow: 0 4px 10px rgba(5, 150, 105, 0.2);
}

/* Header & Navigation */
.bk-header {
    background-color: rgba(250, 250, 249, 0.95);
    padding: var(--bk-spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.bk-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--bk-spacing-sm);
}

.bk-logo {
    font-family: 'DM Sans', sans-serif;
    font-weight: 700;
    font-size: 1.8rem;
    color: var(--5ix-primary);
    letter-spacing: -0.05em;
}

.bk-logo span {
    color: var(--5ix-accent);
}

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

.bk-nav-links a {
    color: var(--5ix-text);
    font-weight: 600;
    padding: 0.5em 0;
    position: relative;
}

.bk-nav-links a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0%;
    height: 2px;
    background-color: var(--5ix-accent);
    transition: width 0.3s ease;
}

.bk-nav-links a:hover::after {
    width: 100%;
}

.bk-hamburger {
    display: none;
    cursor: pointer;
    font-size: 2rem;
    color: var(--5ix-primary);
    background: none;
    border: none;
    padding: 0;
    z-index: 1001;
}

/* Hero Section */
.bk-hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--5ix-background);
    overflow: hidden;
}

.bk-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -2;
}

.bk-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(5, 150, 105, 0.8) 0%, rgba(4, 120, 87, 0.8) 50%, rgba(249, 115, 22, 0.6) 100%);
    z-index: -1;
    clip-path: polygon(0 0, 100% 0, 100% 85%, 0% 100%); /* Geometric cut */
}

.bk-hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    padding: var(--bk-spacing-md);
}

.bk-hero h1 {
    color: var(--5ix-background);
    font-size: 4.5rem;
    margin-bottom: var(--bk-spacing-sm);
}

.bk-hero p {
    font-size: 1.5rem;
    margin-bottom: var(--bk-spacing-lg);
    font-weight: 300;
    color: rgba(250, 250, 249, 0.9);
}

/* Card Components */
.bk-card {
    background-color: var(--5ix-background);
    border-radius: var(--bk-border-radius-lg);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    padding: var(--bk-spacing-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.bk-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.bk-card-img {
    border-radius: var(--bk-border-radius-md);
    margin-bottom: var(--bk-spacing-sm);
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.bk-card h3 {
    color: var(--5ix-primary);
    margin-bottom: var(--bk-spacing-xs);
}

/* Trust Badges */
.bk-trust-badge {
    display: inline-flex;
    align-items: center;
    background-color: rgba(5, 150, 105, 0.1);
    border-radius: 50px;
    padding: 0.7em 1.5em;
    margin: var(--bk-spacing-xs);
    font-weight: 600;
    color: var(--5ix-primary);
    gap: var(--bk-spacing-xs);
}

.bk-trust-badge i {
    color: var(--5ix-accent);
    font-size: 1.2em;
}

/* Form Styling */
.bk-form-group {
    margin-bottom: var(--bk-spacing-md);
}

.bk-form-group label {
    display: block;
    margin-bottom: var(--bk-spacing-xs);
    font-weight: 600;
    color: var(--5ix-text);
}

.bk-form-control {
    width: 100%;
    padding: 1em 1.2em;
    border: 1px solid #ccc;
    border-radius: var(--bk-border-radius-sm);
    font-family: 'Nunito', sans-serif;
    font-size: 1rem;
    color: var(--5ix-text);
    background-color: var(--5ix-background);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.bk-form-control:focus {
    outline: none;
    border-color: var(--5ix-primary);
    box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.2);
}

.bk-form-control::placeholder {
    color: var(--5ix-muted);
}

textarea.bk-form-control {
    min-height: 120px;
    resize: vertical;
}

.bk-form-message {
    margin-top: var(--bk-spacing-sm);
    padding: var(--bk-spacing-sm);
    border-radius: var(--bk-border-radius-sm);
}

.bk-form-success {
    background-color: var(--5ix-success);
    color: white;
}

.bk-form-error {
    background-color: var(--5ix-danger);
    color: white;
}

/* FAQ Accordion */
.bk-faq-item {
    background-color: var(--5ix-background);
    border: 1px solid #e0e0e0;
    border-radius: var(--bk-border-radius-md);
    margin-bottom: var(--bk-spacing-sm);
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
}

.bk-faq-q {
    padding: var(--bk-spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 700;
    color: var(--5ix-text);
    background-color: #f7f7f5;
    transition: background-color 0.3s ease;
    user-select: none;
}

.bk-faq-q:hover {
    background-color: #ececec;
}

.bk-faq-q::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--5ix-primary);
    transition: transform 0.3s ease;
}

.bk-faq-item.active .bk-faq-q::after {
    content: '-';
    transform: rotate(0deg); /* No rotation needed for - */
}

.bk-faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 var(--bk-spacing-md);
}

.bk-faq-item.active .bk-faq-a {
    max-height: 500px; /* Sufficiently large value */
    padding: var(--bk-spacing-sm) var(--bk-spacing-md) var(--bk-spacing-md);
}

/* Footer */
.bk-footer {
    background-color: var(--5ix-text);
    color: var(--5ix-background);
    padding: var(--bk-spacing-xl) 0 var(--bk-spacing-md);
    text-align: center;
    position: relative;
    clip-path: polygon(0 15%, 100% 0, 100% 100%, 0% 100%); /* Inverse geometric cut */
}

.bk-footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--bk-spacing-md);
}

.bk-footer-nav ul {
    list-style: none;
    display: flex;
    gap: var(--bk-spacing-md);
    flex-wrap: wrap;
    justify-content: center;
}

.bk-footer-nav a {
    color: var(--5ix-background);
    font-weight: 300;
}

.bk-footer-nav a:hover {
    color: var(--5ix-primary);
}

.bk-social-links {
    display: flex;
    gap: var(--bk-spacing-md);
    margin-top: var(--bk-spacing-md);
}

.bk-social-links a {
    color: var(--5ix-background);
    font-size: 1.8rem;
    transition: color 0.3s ease;
}

.bk-social-links a:hover {
    color: var(--5ix-accent);
}

.bk-footer-bottom {
    margin-top: var(--bk-spacing-lg);
    padding-top: var(--bk-spacing-md);
    border-top: 1px solid rgba(250, 250, 249, 0.1);
    font-size: 0.9rem;
    color: var(--5ix-muted);
}

/* Animations */
@keyframes bk-fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bk-slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.bk-animate {
    opacity: 0;
}

/* Specific Section Styles */
.bk-features-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.bk-feature-item {
    text-align: center;
    padding: var(--bk-spacing-md);
}

.bk-feature-item i {
    font-size: 3rem;
    color: var(--5ix-accent);
    margin-bottom: var(--bk-spacing-sm);
}

.bk-highlight-card {
    display: flex;
    align-items: center;
    gap: var(--bk-spacing-md);
    background-color: var(--5ix-background);
    border-radius: var(--bk-border-radius-lg);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    padding: var(--bk-spacing-md);
}

.bk-highlight-card.bk-reverse {
    flex-direction: row-reverse;
}

.bk-highlight-card img {
    border-radius: var(--bk-border-radius-md);
    flex-shrink: 0;
    width: 250px;
    height: 180px;
    object-fit: cover;
}

.bk-testimonial-card {
    text-align: center;
    font-style: italic;
    background-color: var(--5ix-background);
    padding: var(--bk-spacing-lg);
    border-radius: var(--bk-border-radius-lg);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.07);
    position: relative;
}

.bk-testimonial-card::before {
    content: '"';
    font-family: 'DM Sans', sans-serif;
    font-size: 5rem;
    color: var(--5ix-primary);
    position: absolute;
    top: -10px;
    left: 20px;
    opacity: 0.1;
    z-index: 0;
}

.bk-testimonial-card p {
    font-size: 1.15rem;
    line-height: 1.7;
    margin-bottom: var(--bk-spacing-sm);
    position: relative;
    z-index: 1;
}

.bk-testimonial-author {
    font-weight: 700;
    color: var(--5ix-accent);
    display: block;
    margin-top: var(--bk-spacing-sm);
}

.bk-contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--bk-spacing-sm);
    margin-top: var(--bk-spacing-lg);
}

.bk-contact-info div {
    display: flex;
    align-items: center;
    gap: var(--bk-spacing-sm);
}

.bk-contact-info i {
    color: var(--5ix-primary);
    font-size: 1.5rem;
}

.bk-cta-angular {
    background: linear-gradient(135deg, var(--5ix-primary) 0%, var(--5ix-secondary) 100%);
    color: var(--5ix-background);
    padding: var(--bk-spacing-xl) 0;
    clip-path: polygon(0 0, 100% 20%, 100% 100%, 0% 80%);
    text-align: center;
}

.bk-cta-angular h2 {
    color: var(--5ix-background);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .bk-container {
        padding-left: var(--bk-spacing-lg);
        padding-right: var(--bk-spacing-lg);
    }

    h1 {
        font-size: 3rem;
    }

    h2 {
        font-size: 2rem;
    }

    .bk-nav-links {
        gap: var(--bk-spacing-md);
    }

    .bk-hero p {
        font-size: 1.25rem;
    }
}

@media (max-width: 768px) {
    .bk-header {
        padding: var(--bk-spacing-sm) 0;
    }

    .bk-nav {
        flex-wrap: wrap;
        justify-content: space-between;
    }

    .bk-nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        background-color: rgba(250, 250, 249, 0.98);
        position: absolute;
        top: 60px;
        left: 0;
        padding: var(--bk-spacing-md) 0;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        height: 0;
        overflow: hidden;
        transition: height 0.3s ease-in-out;
    }

    .bk-nav-links.bk-active {
        display: flex;
        height: auto; /* Will be set by JS */
        max-height: 300px; /* Safe fallback */
    }

    .bk-nav-links li {
        text-align: center;
        padding: var(--bk-spacing-sm) 0;
    }

    .bk-nav-links a {
        font-size: 1.1rem;
    }

    .bk-hamburger {
        display: block;
    }

    .bk-hero h1 {
        font-size: 2.5rem;
    }

    .bk-hero p {
        font-size: 1rem;
    }

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

    .bk-grid {
        grid-template-columns: 1fr;
    }

    .bk-highlight-card {
        flex-direction: column;
        text-align: center;
    }

    .bk-highlight-card.bk-reverse {
        flex-direction: column;
    }

    .bk-highlight-card img {
        width: 100%;
        height: 250px;
    }

    .bk-footer-content {
        align-items: center;
    }

    .bk-footer-nav ul {
        flex-direction: column;
        align-items: center;
        gap: var(--bk-spacing-sm);
    }

    .bk-cta-angular {
        clip-path: polygon(0 0, 100% 5%, 100% 100%, 0% 95%);
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    p {
        font-size: 1rem;
    }

    .bk-btn {
        padding: 1em 2em;
        font-size: 0.9rem;
    }

    .bk-hero h1 {
        font-size: 2rem;
    }

    .bk-hero p {
        font-size: 0.9rem;
    }

    .bk-faq-q {
        padding: var(--bk-spacing-sm);
        font-size: 0.95rem;
    }

    .bk-faq-a {
        padding: var(--bk-spacing-xs) var(--bk-spacing-sm);
    }

    .bk-testimonial-card p {
        font-size: 1rem;
    }

    .bk-contact-info {
      font-size: 0.9rem;
    }
}


/* === Quality polish === */
button, [class*="btn"], [class*="cta"] { transition: all 0.3s ease; cursor: pointer; }
button:hover, [class*="btn"]:hover, [class*="cta"]:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.15); filter: brightness(1.05); }