/* Базовые стили для строгого бизнес-дизайна */
:root {
    --primary-color: #1a2a6c; /* Темно-синий */
    --secondary-color: #f4f7f6; /* Светло-серый фон */
    --text-color: #333;
    --accent-color: #b21f1f; /* Сдержанный красный для акцентов */
    --white: #ffffff;
    --card-bg: #ffffff;
    --border-color: #eee;
}

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--secondary-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Хедер */
header {
    background-color: var(--white);
    color: var(--text-color);
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    box-sizing: border-box;
    z-index: 1000;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-img {
    height: 50px;
    width: auto;
    max-width: 200px;
    object-fit: contain;
}

/* Бургер-меню */
.burger-menu {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 5px;
    z-index: 1002;
}

.burger-menu span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 2px;
    transition: 0.3s;
}

/* Анимация бургера при активации */
.burger-menu.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}
.burger-menu.active span:nth-child(2) {
    opacity: 0;
}
.burger-menu.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 25px;
}

nav a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    transition: color 0.3s;
}

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

.auth-buttons {
    display: flex;
    gap: 15px;
    align-items: center;
}

.btn {
    padding: 8px 18px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s;
    cursor: pointer;
    display: inline-block;
    font-weight: 600;
}

.btn-outline {
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.username-display {
    font-size: 0.8rem;
    color: var(--primary-color);
    font-weight: 600;
}

.btn-logout {
    font-size: 0.7rem;
    color: #666;
    border-color: #ccc;
}

.btn-register {
    background: var(--primary-color);
    color: white;
}

.btn-register:hover {
    background: #2a3a7c;
    color: white;
}

/* Responsive Header & Navigation */
@media (max-width: 992px) {
    header {
        padding: 1rem 3%;
    }

    .burger-menu {
        display: flex;
    }

    nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--white);
        padding: 2rem 0;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
        border-top: 1px solid #eee;
    }

    nav.active {
        display: block;
    }

    nav ul {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }

    .auth-buttons {
        margin-left: auto;
        margin-right: 15px;
        gap: 10px;
    }

    .auth-buttons .username-display {
        display: none;
    }
}

@media (max-width: 480px) {
    .logo-img {
        height: 35px;
    }

    .auth-buttons {
        gap: 8px;
    }

    .btn {
        padding: 6px 12px;
        font-size: 0.8rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .modal-content {
        padding: 1.5rem;
        width: 90%;
    }
}

/* Контентная область */
main {
    flex: 1;
    padding: 2rem 5%;
    max-width: 1200px;
    margin: 80px auto 0; /* Добавил отступ сверху, чтобы контент не уходил под фиксированный хедер */
    width: 100%;
    box-sizing: border-box;
}

.content-section {
    background: var(--card-bg);
    padding: 3rem;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

@media (max-width: 768px) {
    .content-section {
        padding: 1.5rem;
    }
}

.content-section h1 {
    color: var(--primary-color);
    margin-top: 0;
    font-size: 2.5rem;
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
    .content-section h1 {
        font-size: 1.8rem;
    }
}

.lead {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 2rem;
}

/* Футер */
footer {
    background-color: var(--primary-color);
    color: var(--white);
    opacity: 0.9;
    padding: 2rem 5%;
    text-align: center;
    font-size: 0.85rem;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 1rem;
    margin-bottom: 1rem;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 99999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.7);
    align-items: flex-start;
    justify-content: center;
    overflow-y: auto;
    padding: 20px 0;
    -webkit-overflow-scrolling: touch;
}

body.modal-open {
    overflow: hidden;
}

.modal-content {
    background-color: var(--card-bg);
    padding: 2.5rem;
    border-radius: 8px;
    width: 100%;
    max-width: 400px;
    position: relative;
    box-shadow: 0 5px 25px rgba(0,0,0,0.2);
    margin: auto;
}

.modal-header {
    margin-bottom: 1.5rem;
    text-align: center;
}

.modal-header h2 {
    color: var(--primary-color);
    margin: 0;
}

.close-modal {
    position: absolute;
    right: 1.5rem;
    top: 1rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: #aaa;
}

.close-modal:hover {
    color: var(--text-color);
}

.auth-form input, 
.auth-form select, 
.auth-form textarea,
.profile-form input,
.profile-form select,
.profile-form textarea {
    width: 100%;
    padding: 12px;
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
    background-color: var(--white);
    color: var(--text-color);
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 16px;
}

.show-password-container {
    display: flex;
    align-items: center;
    justify-content: flex-start; /* Принудительно прижимаем к левому краю */
    gap: 10px;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    color: #555;
    cursor: pointer;
    user-select: none;
    width: 100%; /* Занимаем всю ширину для корректного выравнивания */
}

.show-password-container input {
    width: 18px !important;
    height: 18px !important;
    margin: 0 !important;
    padding: 0 !important;
    cursor: pointer;
    flex-shrink: 0; /* Чтобы галочка не сжималась */
}

.show-password-container label {
    cursor: pointer;
    margin: 0;
    line-height: 1;
    display: inline-block;
}

.auth-form .btn-submit {
    width: 100%;
    padding: 12px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
}

.auth-form .btn-submit:hover {
    background-color: #2a3a7c;
}

.modal-footer {
    margin-top: 1.5rem;
    text-align: center;
    font-size: 0.9rem;
}

.modal-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
}

.error-message {
    color: var(--accent-color);
    font-size: 0.85rem;
    margin-bottom: 1rem;
    display: none;
}

/* Messages/Notifications */
.messages-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
    max-width: 350px;
}

.message {
    padding: 15px 25px;
    margin-bottom: 10px;
    border-radius: 4px;
    color: white;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: slideIn 0.3s ease-out;
}

.message.success {
    background-color: #28a745;
}

.message.error {
    background-color: var(--accent-color);
}

.message.info {
    background-color: var(--primary-color);
}

.message .close-btn {
    margin-left: 15px;
    cursor: pointer;
    font-weight: bold;
    font-size: 1.2rem;
    line-height: 1;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}