/* ====================================
   БАЗОВЫЕ СТИЛИ И СБРОС
   ==================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
}

/* Типографика */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
    color: #8B0000;
}

h2 {
    font-size: 2rem;
    color: #2c3e50;
}

h3 {
    font-size: 1.5rem;
    color: #2c3e50;
}

h4 {
    font-size: 1.2rem;
    color: #495057;
}

p {
    margin-bottom: 1rem;
}

a {
    color: #8B0000;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #CD5C5C;
}

/* Списки */
ul, ol {
    margin-bottom: 1rem;
}

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

/* Код */
code {
    background-color: #f8f9fa;
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

pre {
    background-color: #f8f9fa;
    padding: 1rem;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 1rem;
}

/* Утилиты */
.text-center {
    text-align: center;
}

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

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Подсветка текста */
.highlight-date {
    background-color: #fff3cd;
    padding: 2px 6px;
    border-radius: 3px;
    font-weight: bold;
    color: #856404;
}

.highlight-period {
    background-color: #d1ecf1;
    padding: 2px 6px;
    border-radius: 3px;
    font-weight: bold;
    color: #0c5460;
}

/* Термины */
a.term {
    color: #8B0000;
    text-decoration: none;
    border-bottom: 1px dotted #8B0000;
    transition: all 0.3s;
}

a.term:hover {
    background-color: #fff3e0;
    border-bottom-style: solid;
}