@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Roboto:wght@400;700;900&display=swap');

:root {
    --zho-primary: #2563eb;
    --zho-secondary: #1e40af;
    --zho-accent: #f59e0b;
    --zho-background: #ffffff;
    --zho-text: #0f172a;
    --zho-muted: #94a3b8;
    --zho-border-radius: 8px;
    --zho-spacing-sm: 16px;
    --zho-spacing-md: 32px;
    --zho-spacing-lg: 80px;
    --zho-spacing-xl: 120px;
    --zho-header-height: 80px;
}

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

html {
    scroll-behavior: smooth;
}

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

::selection {
    background-color: var(--zho-accent);
    color: var(--zho-text);
}

/* Typography Scale */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Roboto', sans-serif;
    color: var(--zho-primary);
    line-height: 1.2;
    margin-bottom: 0.8em;
    font-weight: 700;
}

h1 {
    font-size: 3.5rem;
    font-weight: 900;
    letter-spacing: -0.04em;
    color: var(--zho-secondary);
}

h2 {
    font-size: 2.8rem;
    letter-spacing: -0.03em;
    color: var(--zho-primary);
}

h3 {
    font-size: 2.2rem;
    letter-spacing: -0.02em;
}

h4 {
    font-size: 1.8rem;
}

h5 {
    font-size: 1.4rem;
}

h6 {
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

p {
    margin-bottom: 1em;
    font-size: 1.1rem;
}

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

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

strong {
    font-weight: 600;
}

/* Utility Classes */
.bk-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--zho-spacing-md);
}

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

.bk-flex {
    display: flex;
    align-items: center;
    gap: var(--zho-spacing-md);
}

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

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

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

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

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

.bk-section-header h2 {
    margin-bottom: var(--zho-spacing-sm);
}

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

.bk-section:nth-child(even) {
    background-color: #f7f9fc;
}

/* Buttons */
.bk-button {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    border: 2px solid transparent;
}

.bk-button-primary {
    background-color: var(--zho-primary);
    color: var(--zho-background);
    border-color: var(--zho-primary);
}

.bk-button-primary:hover {
    background-color: var(--zho-secondary);
    border-color: var(--zho-secondary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.bk-button-secondary {
    background-color: var(--zho-accent);
    color: var(--zho-text);
    border-color: var(--zho-accent);
}

.bk-button-secondary:hover {
    background-color: #e08c00;
    border-color: #e08c00;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.bk-button-outline {
    background-color: transparent;
    color: var(--zho-primary);
    border-color: var(--zho-primary);
}

.bk-button-outline:hover {
    background-color: var(--zho-primary);
    color: var(--zho-background);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

/* Header */
.bk-header {
    background-color: var(--zho-background);
    padding: 15px 0;
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

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

.bk-logo {
    font-family: 'Roboto', sans-serif;
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--zho-primary);
    text-decoration: none;
}

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

.bk-nav-links {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.bk-nav-links li {
    margin-left: 30px;
}

.bk-nav-links a {
    color: var(--zho-text);
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

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

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

.bk-nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    cursor: pointer;
}

.bk-nav-toggle span {
    height: 2px;
    width: 100%;
    background-color: var(--zho-text);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.bk-nav-toggle.bk-active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.bk-nav-toggle.bk-active span:nth-child(2) {
    opacity: 0;
}

.bk-nav-toggle.bk-active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Hero Section */
.bk-hero {
    background: linear-gradient(rgba(37, 99, 235, 0.7), rgba(30, 64, 175, 0.7)), url('https://loremflickr.com/1400/800/diy%2Ccraft/all?lock=262562299') center/cover no-repeat;
    min-height: 80vh;
    display: flex;
    align-items: center;
    color: var(--zho-background);
    text-align: center;
    position: relative;
}

.bk-hero-content {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--zho-spacing-md);
}

.bk-hero h1 {
    color: var(--zho-background);
    margin-bottom: var(--zho-spacing-sm);
    animation: bk-bouncy-text 2s ease-in-out infinite;
}

.bk-hero p {
    font-size: 1.5rem;
    margin-bottom: var(--zho-spacing-lg);
}

.bk-hero .bk-button {
    font-size: 1.1rem;
    padding: 15px 40px;
}

/* Cards */
.bk-card {
    background-color: var(--zho-background);
    border-radius: var(--zho-border-radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    padding: var(--zho-spacing-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    text-align: center;
}

.bk-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.bk-card-icon {
    margin-bottom: var(--zho-spacing-sm);
    color: var(--zho-accent);
    font-size: 3rem;
}

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

/* Feature Bubbles */
.bk-feature-bubble {
    background-color: var(--zho-background);
    border-radius: 50%;
    width: 150px;
    height: 150px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    margin: 0 auto 20px auto;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.bk-feature-bubble:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.bk-feature-bubble-icon {
    font-size: 3rem;
    color: var(--zho-primary);
    margin-bottom: 5px;
}

.bk-feature-bubble h4 {
    font-size: 1rem;
    margin: 0;
    color: var(--zho-text);
}

/* Trust Badges */
.bk-trust-badge {
    display: inline-flex;
    align-items: center;
    background-color: #e0f2fe; /* Light blue */
    border-radius: 50px;
    padding: 8px 20px;
    margin: 10px;
    font-weight: 500;
    color: var(--zho-secondary);
}

.bk-trust-badge .bk-icon {
    margin-right: 8px;
    color: var(--zho-primary);
    font-size: 1.2rem;
}

/* CTA Section */
.bk-cta-section {
    background: var(--zho-primary);
    color: var(--zho-background);
    padding: var(--zho-spacing-lg) 0;
    text-align: center;
}

.bk-cta-section h2 {
    color: var(--zho-background);
    margin-bottom: var(--zho-spacing-sm);
}

.bk-cta-section p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto var(--zho-spacing-md) auto;
}

/* Testimonials */
.bk-testimonial-card {
    background-color: var(--zho-background);
    border-radius: var(--zho-border-radius);
    padding: var(--zho-spacing-md);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    text-align: center;
}

.bk-testimonial-card p {
    font-style: italic;
    color: var(--zho-text);
    margin-bottom: var(--zho-spacing-sm);
}

.bk-testimonial-card .bk-author {
    font-weight: 600;
    color: var(--zho-primary);
}

.bk-testimonial-card .bk-role {
    font-size: 0.9rem;
    color: var(--zho-muted);
}

/* FAQ */
.bk-faq-item {
    background-color: var(--zho-background);
    border: 1px solid #e2e8f0;
    border-radius: var(--zho-border-radius);
    margin-bottom: 15px;
    overflow: hidden;
}

.bk-faq-q {
    padding: var(--zho-spacing-sm) var(--zho-spacing-md);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--zho-primary);
    background-color: #f0f4f8;
    transition: background-color 0.3s ease;
}

.bk-faq-q:hover {
    background-color: #e2e8f0;
}

.bk-faq-q::after {
    content: '+';
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.bk-faq-item.active .bk-faq-q::after {
    transform: rotate(45deg);
    content: 'x';
}

.bk-faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
    padding: 0 var(--zho-spacing-md);
    color: var(--zho-text);
}

.bk-faq-item.active .bk-faq-a {
    max-height: 500px; /* Adjust as needed for content */
    padding: var(--zho-spacing-sm) var(--zho-spacing-md) var(--zho-spacing-md) var(--zho-spacing-md);
}

.bk-faq-a p {
    margin-bottom: 0;
}

/* Forms */
.bk-form-group {
    margin-bottom: var(--zho-spacing-sm);
}

.bk-form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--zho-primary);
}

.bk-form-group input[type="text"],
.bk-form-group input[type="email"],
.bk-form-group input[type="tel"],
.bk-form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #cbd5e1;
    border-radius: var(--zho-border-radius);
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    background-color: #f8fafc;
}

.bk-form-group input:focus,
.bk-form-group textarea:focus {
    outline: none;
    border-color: var(--zho-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
    background-color: var(--zho-background);
}

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

.bk-form-message {
    margin-top: var(--zho-spacing-sm);
    padding: 12px;
    border-radius: var(--zho-border-radius);
    font-weight: 600;
    display: none;
}

.bk-form-message.bk-success {
    background-color: #d1fae5; /* Green light */
    color: #065f46; /* Green dark */
    border: 1px solid #a7f3d0;
}

.bk-form-message.bk-error {
    background-color: #fee2e2; /* Red light */
    color: #991b1b; /* Red dark */
    border: 1px solid #fecaca;
}
.bk-form-message.bk-sending {
    background-color: #eff6ff; /* Blue light */
    color: #1e40af; /* Blue dark */
    border: 1px solid #bfdbfe;
}

/* Footer */
.bk-footer {
    background-color: var(--zho-secondary);
    color: var(--zho-background);
    padding: var(--zho-spacing-lg) 0 var(--zho-spacing-md) 0;
    font-size: 0.95rem;
}

.bk-footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--zho-spacing-lg);
    margin-bottom: var(--zho-spacing-md);
}

.bk-footer-about h3 {
    color: var(--zho-background);
    margin-bottom: var(--zho-spacing-sm);
}

.bk-footer-links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--zho-spacing-md);
}

.bk-footer-col h4 {
    color: var(--zho-accent);
    margin-bottom: var(--zho-spacing-sm);
    font-size: 1.1rem;
}

.bk-footer-col ul {
    list-style: none;
    padding: 0;
}

.bk-footer-col ul li {
    margin-bottom: 8px;
}

.bk-footer-col a {
    color: var(--zho-background);
    transition: color 0.3s ease;
}

.bk-footer-col a:hover {
    color: var(--zho-accent);
}

.bk-footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--zho-spacing-md);
    text-align: center;
    color: var(--zho-muted);
    font-size: 0.85rem;
}

/* 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);
    }
}

@keyframes bk-bouncy-text {
    0% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0); }
}

.bk-animate {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.bk-animate.bk-animated {
    opacity: 1;
    transform: translateY(0);
}

/* Media Queries */
@media (max-width: 1024px) {
    h1 {
        font-size: 2.8rem;
    }
    h2 {
        font-size: 2.2rem;
    }
    .bk-container {
        padding: 0 var(--zho-spacing-sm);
    }
    .bk-section {
        padding: var(--zho-spacing-md) 0;
    }
    .bk-nav-links li {
        margin-left: 20px;
    }
    .bk-footer-content {
        grid-template-columns: 1fr;
        gap: var(--zho-spacing-md);
    }
    .bk-footer-links-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .bk-nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: var(--zho-header-height);
        left: 0;
        width: 100%;
        background-color: var(--zho-background);
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
        padding: var(--zho-spacing-md) 0;
        border-top: 1px solid #eee;
    }

    .bk-nav-links.bk-active {
        display: flex;
    }

    .bk-nav-links li {
        margin: 10px 0;
        text-align: center;
    }

    .bk-nav-toggle {
        display: flex;
    }

    .bk-hero h1 {
        font-size: 2.2rem;
    }

    .bk-hero p {
        font-size: 1.2rem;
    }

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

    .bk-footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .bk-footer-links-grid {
        grid-template-columns: 1fr;
    }
    .bk-footer-col h4 {
        margin-top: var(--zho-spacing-md);
    }
    .bk-footer-about p {
        text-align: center;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }
    h2 {
        font-size: 1.8rem;
    }
    p {
        font-size: 1rem;
    }
    .bk-button {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    .bk-hero h1 {
        font-size: 1.8rem;
    }
    .bk-hero p {
        font-size: 1rem;
    }
    .bk-spacing-lg {
        padding: var(--zho-spacing-md) 0;
    }
    .bk-feature-bubble {
        width: 120px;
        height: 120px;
    }
    .bk-feature-bubble-icon {
        font-size: 2.5rem;
    }
    .bk-trust-badge {
        padding: 6px 15px;
        font-size: 0.85rem;
    }
}


/* === 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); }