/* Discussion Board Styles */

:root {
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --bg-dark: #0a0a0b;
    --bg-elevated: #19191c;
    --bg-card: #1f1f23;
    --text-primary: #ffffff;
    --text-secondary: #9ca3af;
    --border: #2a2a2e;
    --success: #10b981;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Navigation */
.nav {
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
}

.nav-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
}

.brand-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary) 0%, #8b5cf6 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
}

.btn-back {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

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

/* Container */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 24px;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 48px;
}

.header h1 {
    font-size: 48px;
    margin-bottom: 12px;
}

.header p {
    color: var(--text-secondary);
    font-size: 18px;
}

/* Message Form Card */
.message-form-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    margin-bottom: 48px;
}

.message-form-card h2 {
    font-size: 24px;
    margin-bottom: 24px;
}

/* Form */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 16px;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* Buttons */
.btn-primary {
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: background 0.2s;
}

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

.btn-icon {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 8px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-icon:hover {
    border-color: var(--primary);
    background: var(--bg-card);
}

/* Messages Section */
.messages-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
}

.messages-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.messages-header h2 {
    font-size: 24px;
}

/* Messages List */
.messages-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.message-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    transition: border-color 0.2s;
}

.message-card:hover {
    border-color: var(--primary);
}

.message-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

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

.message-date {
    font-size: 14px;
    color: var(--text-secondary);
}

.message-content {
    color: var(--text-secondary);
    line-height: 1.6;
}

.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px 20px;
    min-width: 300px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    animation: slideIn 0.3s ease;
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid #ef4444;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .header h1 {
        font-size: 36px;
    }
    
    .message-form-card,
    .messages-section {
        padding: 24px;
    }
    
    .container {
        padding: 24px 16px;
    }
}