/* ========================================
   kirov.bg - Styles
   Modern, minimal, responsive design
   ======================================== */

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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #a5b4fc;
    --primary-bg: #eef2ff;
    --text: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --bg: #ffffff;
    --bg-subtle: #f8fafc;
    --bg-muted: #f1f5f9;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --success: #22c55e;
    --error: #ef4444;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);
    --shadow-xl: 0 20px 50px -12px rgba(0,0,0,0.12);
    --transition: 0.2s ease;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

h1 { font-size: clamp(2.5rem, 5vw, 3.75rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); letter-spacing: -0.01em; }
h3 { font-size: 1.25rem; }

.highlight {
    color: var(--primary);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 0.938rem;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 1px 3px rgba(99,102,241,0.3);
}
.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: 0 4px 12px rgba(99,102,241,0.4);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--text);
    border: 1.5px solid var(--border);
}
.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-bg);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

.btn-nav {
    background: var(--primary);
    color: white;
    padding: 10px 20px;
    font-size: 0.875rem;
}
.btn-nav:hover {
    background: var(--primary-dark);
}

/* ========================================
   Navbar
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255,255,255,0.95);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -0.02em;
}
.logo-at { color: var(--primary); font-weight: 800; }
.logo-dot { color: var(--primary); }

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.938rem;
    font-weight: 500;
    transition: color var(--transition);
}
.nav-links a:hover { color: var(--primary); }

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all 0.3s ease;
}
.mobile-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ========================================
   Hero
   ======================================== */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(180deg, var(--primary-bg) 0%, var(--bg) 100%);
    overflow: hidden;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 520px;
    margin-top: 20px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-top: 36px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}

.stat { text-align: center; }
.stat-number { display: block; font-size: 1.5rem; font-weight: 700; color: var(--text); }
.stat-label { font-size: 0.813rem; color: var(--text-secondary); }
.stat-divider { width: 1px; height: 40px; background: var(--border); }

/* Email Preview Card */
.email-preview-card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--border);
    animation: floatCard 6s ease-in-out infinite;
}

@keyframes floatCard {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.email-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--bg-subtle);
    border-bottom: 1px solid var(--border-light);
}

.email-dots { display: flex; gap: 6px; }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot.red { background: #ef4444; }
.dot.yellow { background: #f59e0b; }
.dot.green { background: #22c55e; }

.email-card-title {
    font-size: 0.813rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.email-card-body { padding: 24px; }

.email-field {
    display: flex;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.875rem;
}

.email-label { color: var(--text-light); font-weight: 500; min-width: 50px; }
.email-value { color: var(--text); font-weight: 500; }

.email-body-preview {
    margin-top: 16px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
}
.email-body-preview p { margin-bottom: 8px; }

/* ========================================
   Sections Common
   ======================================== */
.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 56px;
}

.section-badge {
    display: inline-block;
    padding: 6px 14px;
    background: var(--primary-bg);
    color: var(--primary);
    font-size: 0.813rem;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.063rem;
    margin-top: 12px;
}

/* ========================================
   Features
   ======================================== */
.features {
    padding: 100px 0;
    background: var(--bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    padding: 32px 24px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--bg);
    transition: all 0.3s ease;
}

.feature-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    margin-bottom: 8px;
    font-size: 1.063rem;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* ========================================
   How It Works
   ======================================== */
.how-it-works {
    padding: 100px 0;
    background: var(--bg-subtle);
}

.steps-grid {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
}

.step-card {
    text-align: center;
    padding: 40px 32px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    flex: 1;
    max-width: 300px;
}

.step-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-light);
    margin-bottom: 16px;
    line-height: 1;
}

.step-card h3 { margin-bottom: 8px; }
.step-card p { color: var(--text-secondary); font-size: 0.875rem; }

.step-connector {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

/* ========================================
   Pricing
   ======================================== */
.pricing {
    padding: 100px 0;
    background: var(--bg);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}

.pricing-card {
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    background: white;
    position: relative;
    transition: all 0.3s ease;
}
.pricing-card:hover {
    box-shadow: var(--shadow-lg);
}

.pricing-card.popular {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: scale(1.03);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: 4px 16px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-name {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.pricing-price {
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text);
}

.price-currency {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.pricing-features {
    list-style: none;
    margin-bottom: 32px;
}

.pricing-features li {
    padding: 8px 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.check {
    color: var(--success);
    font-weight: 700;
}

/* ========================================
   Contact Form
   ======================================== */
.contact {
    padding: 100px 0;
    background: var(--bg-subtle);
}

.form-wrapper {
    max-width: 680px;
    margin: 0 auto;
    background: white;
    padding: 48px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}

.required { color: var(--error); }

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.938rem;
    font-family: inherit;
    color: var(--text);
    background: var(--bg);
    transition: all var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.1);
}

.form-group input.invalid,
.form-group textarea.invalid {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(239,68,68,0.1);
}

.input-with-suffix {
    display: flex;
    align-items: stretch;
}

.input-with-suffix input {
    border-right: none;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.input-suffix {
    display: flex;
    align-items: center;
    padding: 0 16px;
    background: var(--bg-muted);
    border: 1.5px solid var(--border);
    border-left: none;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    white-space: nowrap;
}

.error-message {
    display: block;
    font-size: 0.813rem;
    color: var(--error);
    margin-top: 4px;
    min-height: 20px;
}

.captcha-group {
    max-width: 300px;
}

/* Checkbox */
.checkbox-group { margin-bottom: 24px; }

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    font-size: 0.938rem;
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkbox-custom {
    width: 22px;
    height: 22px;
    border: 2px solid var(--border);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    flex-shrink: 0;
}

.checkbox-label input:checked + .checkbox-custom {
    background: var(--primary);
    border-color: var(--primary);
}

.checkbox-label input:checked + .checkbox-custom::after {
    content: '✓';
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
}

/* Loader */
.loader {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Success / Error */
.form-success {
    text-align: center;
    padding: 40px;
}
.success-icon { font-size: 3rem; margin-bottom: 16px; }
.form-success h3 { color: var(--success); margin-bottom: 8px; }
.form-success p { color: var(--text-secondary); }

.form-error-msg {
    text-align: center;
    padding: 16px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: var(--radius-sm);
    margin-top: 16px;
}
.form-error-msg p { color: var(--error); font-size: 0.875rem; }

/* ========================================
   FAQ
   ======================================== */
.faq {
    padding: 100px 0;
    background: var(--bg);
}

.faq-list {
    max-width: 720px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item[open] {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
}

.faq-item summary {
    padding: 20px 24px;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.938rem;
    transition: background 0.2s;
}

.faq-item summary:hover { background: var(--bg-subtle); }

.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::marker { display: none; }

.faq-item summary::after {
    content: '+';
    font-size: 1.25rem;
    color: var(--primary);
    font-weight: 300;
    transition: transform 0.2s;
}
.faq-item[open] summary::after {
    content: '−';
}

.faq-item p {
    padding: 0 24px 20px;
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.7;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: 64px 0 32px;
    background: var(--text);
    color: white;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand p {
    color: rgba(255,255,255,0.6);
    font-size: 0.875rem;
    margin-top: 16px;
    max-width: 320px;
    line-height: 1.7;
}

.footer-brand .logo { color: white; }
.footer-brand .logo-at, .footer-brand .logo-dot { color: var(--primary-light); }

.footer-links h4 {
    color: white;
    font-size: 0.938rem;
    margin-bottom: 16px;
}

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

.footer-links li {
    padding: 6px 0;
    font-size: 0.875rem;
    color: rgba(255,255,255,0.6);
}

.footer-links a {
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    transition: color var(--transition);
}
.footer-links a:hover { color: white; }

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.813rem;
    color: rgba(255,255,255,0.4);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .pricing-grid { grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .pricing-card.popular { transform: scale(1.02); }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .btn-nav { display: none; }
    .mobile-toggle { display: flex; }

    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero { padding: 120px 0 60px; }

    .hero-visual { display: none; }

    .hero-stats { flex-wrap: wrap; gap: 16px; }

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

    .steps-grid { flex-direction: column; }
    .step-connector { transform: rotate(90deg); }
    .step-card { max-width: 100%; width: 100%; }

    .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
    .pricing-card.popular { transform: none; }

    .form-wrapper { padding: 32px 24px; }
    .form-grid { grid-template-columns: 1fr; }

    .footer-content { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; }
}