/* CSS стили для сайта-конвертера */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-burgundy: #722F37;
    --light-burgundy: #8B4A52;
    --dark-burgundy: #5A252A;
    --accent-burgundy: #A0616A;
    --light-bg: #FAF7F8;
    --white: #FFFFFF;
    --text-dark: #2C1B1D;
    --text-light: #6B4C50;
    --border-color: #E5D6D8;
    --shadow: rgba(114, 47, 55, 0.1);
    --success-color: #28a745;
    --warning-color: #ffc107;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: linear-gradient(135deg, var(--light-bg) 0%, #F5F0F1 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: var(--white);
    box-shadow: 0 2px 10px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-burgundy);
    text-decoration: none;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: var(--primary-burgundy);
}

/* Breadcrumb */
.breadcrumb {
    padding: 1rem 0;
    font-size: 0.9rem;
    color: var(--text-light);
}

.breadcrumb a {
    color: var(--primary-burgundy);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* Main content */
h1 {
    font-size: 2.5rem;
    color: var(--primary-burgundy);
    margin-bottom: 2rem;
    text-align: center;
}

h2 {
    color: var(--primary-burgundy);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

h3 {
    color: var(--dark-burgundy);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

/* Result Hero Section */
.result-hero {
    background: var(--white);
    border-radius: 15px;
    padding: 3rem 2rem;
    margin: 2rem 0;
    text-align: center;
    box-shadow: 0 8px 30px var(--shadow);
    border: 2px solid var(--primary-burgundy);
}

.main-result {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-burgundy);
}

.input-value {
    color: var(--dark-burgundy);
}

.equals {
    margin: 0 1rem;
    color: var(--accent-burgundy);
}

.output-value {
    color: var(--primary-burgundy);
    background: var(--light-bg);
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

/* Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 3rem 0;
}

/* Calculator Section */
.calculator-section {
    background: var(--white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 20px var(--shadow);
}

.converter-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.input-group {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.converter-input {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.converter-input:focus {
    outline: none;
    border-color: var(--primary-burgundy);
}

.unit-select {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    background: var(--white);
    min-width: 120px;
}

.convert-arrow {
    text-align: center;
    color: var(--primary-burgundy);
    font-size: 1.5rem;
    font-weight: bold;
}

/* Formula Section */
.formula-section {
    background: var(--white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 20px var(--shadow);
}

.formula-box {
    background: var(--light-bg);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-burgundy);
}

.formula {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary-burgundy);
    margin-bottom: 1rem;
    font-family: 'Courier New', monospace;
    background: var(--white);
    padding: 0.5rem;
    border-radius: 4px;
}

.step-by-step {
    margin-top: 1rem;
}

.step-by-step ol {
    margin-left: 1.5rem;
}

.step-by-step li {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

/* Info Section */
.info-section {
    margin: 3rem 0;
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.info-card {
    background: var(--white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 20px var(--shadow);
}

.info-card h3 {
    color: var(--primary-burgundy);
    margin-bottom: 1rem;
}

.info-card p {
    line-height: 1.7;
    color: var(--text-dark);
}

/* Similar Section */
.similar-section {
    margin: 3rem 0;
}

.similar-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.similar-link {
    display: block;
    padding: 1rem;
    background: var(--white);
    color: var(--text-dark);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s;
    border: 1px solid var(--border-color);
    text-align: center;
    font-weight: 500;
}

.similar-link:hover {
    background: var(--primary-burgundy);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--shadow);
}

/* Table Section */
.table-section {
    margin: 3rem 0;
}

.conversion-table {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px var(--shadow);
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background: var(--primary-burgundy);
    color: var(--white);
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    font-weight: 600;
}

tbody tr:hover {
    background: var(--light-bg);
}

tbody tr:nth-child(even) {
    background: rgba(250, 247, 248, 0.5);
}

/* Footer */
footer {
    background: var(--primary-burgundy);
    color: var(--white);
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
}

footer p {
    margin-bottom: 0.5rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .result-hero {
        padding: 2rem 1rem;
    }
    
    .main-result {
        font-size: 1.5rem;
    }
    
    .similar-grid {
        grid-template-columns: 1fr;
    }
    
    nav ul {
        flex-direction: column;
        gap: 1rem;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .converter-input, .unit-select {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .result-hero {
        padding: 1.5rem 1rem;
    }
    
    .main-result {
        font-size: 1.2rem;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .equals {
        margin: 0;
    }
    
    th, td {
        padding: 0.5rem;
        font-size: 0.9rem;
    }
}

/* Loading and Animation States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.fade-in {
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Detailed conversion steps styling */
.detailed-conversion {
    font-size: 1rem;
    line-height: 1.7;
}

.detailed-conversion h3 {
    color: var(--primary-burgundy);
    font-size: 1.3rem;
    margin-bottom: 1rem;
    text-align: center;
    padding: 1rem;
    background: var(--light-bg);
    border-radius: 8px;
    border: 2px solid var(--primary-burgundy);
}

.detailed-conversion .intro {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--text-dark);
}

.step-block {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--white);
    border-radius: 10px;
    border-left: 5px solid var(--accent-burgundy);
    box-shadow: 0 2px 10px var(--shadow);
}

.step-block h4 {
    color: var(--primary-burgundy);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.step-block p {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.formula-display {
    background: var(--light-bg);
    padding: 1rem;
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    font-weight: bold;
    color: var(--primary-burgundy);
    text-align: center;
    margin: 1rem 0;
    border: 1px solid var(--border-color);
}

.final-result {
    margin-top: 2rem;
    padding: 2rem;
    background: linear-gradient(135deg, var(--primary-burgundy), var(--light-burgundy));
    color: var(--white);
    border-radius: 12px;
    text-align: center;
}

.final-result h4 {
    color: var(--white);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.final-result p {
    font-size: 1.1rem;
    font-weight: 500;
}

/* Mobile responsiveness for detailed steps */
@media (max-width: 768px) {
    .detailed-conversion h3 {
        font-size: 1.1rem;
        padding: 0.75rem;
    }
    
    .step-block {
        padding: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .step-block h4 {
        font-size: 1rem;
    }
    
    .formula-display {
        font-size: 0.9rem;
        padding: 0.75rem;
    }
    
    .final-result {
        padding: 1.5rem;
    }
}
.text-center { text-align: center; }
.text-right { text-align: right; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--primary-burgundy);
    color: var(--white);
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: background-color 0.3s;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background: var(--dark-burgundy);
}

.btn-secondary {
    background: var(--accent-burgundy);
}

.btn-secondary:hover {
    background: var(--light-burgundy);
}