:root {
    --bg-color: #f3f4f6;
    --text-color: #1f2937;
    --card-bg: #ffffff;
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --border-color: #e5e7eb;
    --unread-bg: #eff6ff;
    --unread-border: #bfdbfe;
    --text-muted: #6b7280;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
.header {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    margin-bottom: 2rem;
}

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

.logo {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-email {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    border: none;
}

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

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

.btn-secondary {
    background-color: #f3f4f6;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: #e5e7eb;
}

.btn-logout {
    background-color: transparent;
    color: #ef4444;
    border: 1px solid #fee2e2;
}

.btn-logout:hover {
    background-color: #fee2e2;
}

.btn-block {
    display: block;
    width: 100%;
}

/* Login Form */
.login-container {
    display: flex;
    justify-content: center;
    margin-top: 4rem;
}

.login-card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

.login-card h2 {
    margin-bottom: 1.5rem;
    text-align: center;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.alert {
    padding: 0.75rem;
    border-radius: 0.375rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.alert-error {
    background-color: #fef2f2;
    color: #b91c1c;
    border: 1px solid #fecaca;
}

/* Inbox */
.inbox-container h2 {
    margin-bottom: 1.5rem;
}

.empty-state {
    text-align: center;
    padding: 3rem;
    background-color: var(--card-bg);
    border-radius: 0.5rem;
    color: var(--text-muted);
}

.message-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.message-item {
    display: block;
    background-color: var(--card-bg);
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    text-decoration: none;
    color: inherit;
    transition: box-shadow 0.2s;
}

.message-item:hover {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.message-item.unread {
    background-color: var(--unread-bg);
    border-color: var(--unread-border);
}

.message-item.unread .message-subject {
    font-weight: bold;
}

.message-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.25rem;
}

.message-from {
    font-weight: 500;
    font-size: 0.875rem;
}

.message-date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.message-subject {
    font-size: 1rem;
    margin-bottom: 0.25rem;
    color: var(--text-color);
}

.message-preview {
    font-size: 0.875rem;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Message View */
.message-actions {
    margin-bottom: 1rem;
}

.message-card {
    background-color: var(--card-bg);
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.message-headers {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    background-color: #f9fafb;
}

.header-row {
    margin-bottom: 0.25rem;
    font-size: 0.875rem;
}

.header-row strong {
    display: inline-block;
    width: 60px;
    color: var(--text-muted);
}

.subject-row {
    margin-top: 0.5rem;
    font-size: 1.125rem;
}

.subject-row strong {
    width: auto;
    margin-right: 0.5rem;
}

.message-body {
    padding: 1.5rem;
    overflow-wrap: break-word;
    word-break: break-all;
}

.message-body pre {
    white-space: pre-wrap;
    word-wrap: break-word;
    word-break: break-all;
    overflow-wrap: anywhere;
    font-family: inherit;
    font-size: 0.875rem;
    max-width: 100%;
}

/* Компактные плашки для ссылок */
.url-badge {
    display: inline-block;
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white !important;
    padding: 0.4rem 0.8rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    margin: 0.25rem 0;
    transition: all 0.2s;
    box-shadow: 0 2px 4px rgba(59, 130, 246, 0.3);
    max-width: 90%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.url-badge:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(59, 130, 246, 0.4);
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
}

.url-badge:active {
    transform: translateY(0);
}