/**
 * Little Blog - Default Theme Styles
 *
 * Clean, modern design with CSS custom properties for easy theming
 */

/* ===== CSS Variables ===== */
:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1e40af;
    --color-secondary: #64748b;
    --color-background: #ffffff;
    --color-surface: #f8fafc;
    --color-border: #e2e8f0;
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-success: #10b981;
    --color-error: #ef4444;
    --color-warning: #f59e0b;

    --font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-size-base: 16px;
    --font-size-small: 14px;
    --font-size-large: 18px;
    --font-size-xlarge: 24px;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    --border-radius: 8px;
    --box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --box-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    --max-width: 800px;
    --transition: all 0.2s ease;
}

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

html {
    font-size: var(--font-size-base);
    line-height: 1.6;
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    background-color: var(--color-background);
    min-height: 100vh;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* ===== Layout ===== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== Header ===== */
.site-header {
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
    margin-bottom: var(--spacing-xl);
}

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

.site-title {
    font-size: var(--font-size-xlarge);
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
}

.site-title a {
    color: var(--color-text);
    text-decoration: none;
}

.site-nav ul {
    list-style: none;
    display: flex;
    gap: var(--spacing-lg);
}

.site-nav a {
    color: var(--color-text-light);
    font-weight: 500;
}

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

/* ===== Footer ===== */
.site-footer {
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-text-light);
    font-size: var(--font-size-small);
}

/* ===== Blurt Cards ===== */
.blurt-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    transition: var(--transition);
}

.blurt-card:hover {
    box-shadow: var(--box-shadow);
}

.blurt-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.blurt-meta {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    font-size: var(--font-size-small);
    color: var(--color-text-light);
}

.blurt-author {
    font-weight: 600;
    color: var(--color-primary);
}

.blurt-content {
    font-size: var(--font-size-base);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    white-space: pre-wrap;
    word-wrap: break-word;
}

.blurt-actions {
    display: flex;
    gap: var(--spacing-md);
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-align: center;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    text-decoration: none;
}

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

.btn-secondary:hover {
    background-color: #475569;
    text-decoration: none;
}

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

.btn-danger:hover {
    background-color: #dc2626;
    text-decoration: none;
}

.btn-small {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-small);
}

/* ===== Forms ===== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background-color: var(--color-background);
    transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 150px;
    line-height: 1.6;
}

.form-textarea.auto-expand {
    resize: none;
    overflow: hidden;
}

.form-hint {
    font-size: var(--font-size-small);
    color: var(--color-text-light);
    margin-top: var(--spacing-xs);
}

.char-count {
    font-size: var(--font-size-small);
    color: var(--color-text-light);
    text-align: right;
    margin-top: var(--spacing-xs);
}

/* ===== Messages ===== */
.message {
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
}

.message-success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.message-error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.message-info {
    background-color: #dbeafe;
    color: #1e40af;
    border: 1px solid #93c5fd;
}

.message-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 1000;
    max-width: 400px;
}

.message-container .message {
    margin-bottom: var(--spacing-md);
    box-shadow: var(--box-shadow-lg);
}

.fade-out {
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* ===== Pagination ===== */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
}

.pagination a,
.pagination span {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text);
}

.pagination a:hover {
    background-color: var(--color-surface);
    text-decoration: none;
}

.pagination .active {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-text-light);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

/* ===== Utilities ===== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: var(--spacing-md); }
.mb-1 { margin-bottom: var(--spacing-md); }
.mt-2 { margin-top: var(--spacing-xl); }
.mb-2 { margin-bottom: var(--spacing-xl); }

/* ===== Reply System ===== */
.replies-section {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 2px solid var(--color-border);
}

.reply-form-container {
    background-color: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-xl);
}

.guest-auth-prompt {
    background-color: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.reply-item {
    background-color: var(--color-surface);
    border-left: 3px solid var(--color-primary);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-radius: var(--border-radius);
}

.reply-header {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-small);
}

.reply-author {
    font-weight: 600;
    color: var(--color-primary);
}

.reply-date {
    color: var(--color-text-light);
}

.reply-edited {
    color: var(--color-text-light);
    font-style: italic;
}

.reply-content {
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.reply-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.nested-replies {
    margin-left: var(--spacing-xl);
    margin-top: var(--spacing-md);
}

.no-replies {
    text-align: center;
    color: var(--color-text-light);
    padding: var(--spacing-xl);
}

/* ===== Message System ===== */
.message-compose-page,
.guest-auth-page {
    max-width: 600px;
    margin: 0 auto;
}

.info-box {
    background-color: var(--color-surface);
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
}

.conversation-list {
    list-style: none;
}

.conversation-item {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    transition: var(--transition);
}

.conversation-item:hover {
    box-shadow: var(--box-shadow);
}

.conversation-item.unread {
    border-left: 4px solid var(--color-primary);
    background-color: #dbeafe;
}

.message-thread {
    margin-top: var(--spacing-lg);
}

.message-item {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-radius: var(--border-radius);
}

.message-item.from-guest {
    background-color: var(--color-surface);
    border-left: 3px solid var(--color-secondary);
}

.message-item.from-admin {
    background-color: #dbeafe;
    border-left: 3px solid var(--color-primary);
}

.message-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-small);
    color: var(--color-text-light);
}

.message-content {
    line-height: 1.6;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .site-header .container {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .site-nav ul {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }

    .blurt-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .blurt-actions {
        width: 100%;
        justify-content: flex-start;
    }

    .message-container {
        left: var(--spacing-md);
        right: var(--spacing-md);
        max-width: none;
    }

    .nested-replies {
        margin-left: var(--spacing-md);
    }
}