/**
 * BTC University - Campus Page Styles
 * Styles for campus listing and individual campus homeroom pages
 * 
 * Features:
 * - Campus cards grid
 * - Discord-style chat interface
 * - Channel sidebar
 * - Message bubbles and interactions
 */

/* ============================================
   CAMPUS LISTING PAGE
============================================ */

.campus-hero {
    padding: var(--space-16) 0;
    background: linear-gradient(135deg, var(--btcu-navy-dark) 0%, var(--btcu-navy) 100%);
    text-align: center;
}

.campus-hero h1 {
    color: var(--btcu-white);
    margin-bottom: var(--space-4);
}

.campus-hero p {
    color: var(--btcu-gray-300);
    font-size: var(--text-xl);
    max-width: 40rem;
    margin: 0 auto;
}

/* Campus Grid */
.campus-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
    padding: var(--space-12) 0;
}

.campus-card {
    position: relative;
    background: var(--btcu-white);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-default);
    text-decoration: none;
    display: flex;
    flex-direction: column;
}

.campus-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.campus-card-header {
    position: relative;
    padding: var(--space-8);
    background: linear-gradient(135deg, var(--btcu-navy) 0%, var(--btcu-navy-light) 100%);
    color: var(--btcu-white);
}

.campus-card-year {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    padding: var(--space-1) var(--space-3);
    background: rgba(201, 184, 150, 0.2);
    border: 1px solid rgba(201, 184, 150, 0.3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--btcu-gold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
}

.campus-card-icon {
    width: 4rem;
    height: 4rem;
    margin-bottom: var(--space-4);
    padding: var(--space-3);
    background: rgba(201, 184, 150, 0.15);
    border-radius: var(--radius-xl);
    color: var(--btcu-gold);
}

.campus-card-title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-2);
    color: var(--btcu-white);
}

.campus-card-subtitle {
    font-size: var(--text-sm);
    color: var(--btcu-gray-300);
}

.campus-card-body {
    flex: 1;
    padding: var(--space-6);
}

.campus-card-description {
    font-size: var(--text-base);
    color: var(--btcu-gray-600);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-4);
}

.campus-card-courses {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.campus-card-course {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--btcu-gray-500);
}

.campus-card-course::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--btcu-gold);
    border-radius: 50%;
    flex-shrink: 0;
}

.campus-card-footer {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--btcu-gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.campus-card-stats {
    display: flex;
    gap: var(--space-4);
}

.campus-card-stat {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-sm);
    color: var(--btcu-gray-500);
}

.campus-card-stat svg {
    width: 1rem;
    height: 1rem;
}

.campus-card-enter {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--btcu-orange);
}

.campus-card-enter svg {
    width: 1rem;
    height: 1rem;
    transition: transform var(--transition-fast);
}

.campus-card:hover .campus-card-enter svg {
    transform: translateX(4px);
}

/* ============================================
   INDIVIDUAL CAMPUS PAGE - HOMEROOM
============================================ */

.campus-homeroom {
    display: flex;
    height: calc(100vh - var(--header-height));
    background: var(--btcu-gray-100);
}

/* Channel Sidebar */
.campus-sidebar {
    width: 16rem;
    background: var(--btcu-navy-dark);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.campus-sidebar-header {
    padding: var(--space-4);
    border-bottom: 1px solid rgba(201, 184, 150, 0.1);
}

.campus-sidebar-title {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--btcu-white);
    margin-bottom: var(--space-1);
}

.campus-sidebar-subtitle {
    font-size: var(--text-xs);
    color: var(--btcu-gray-400);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
}

/* Channel Groups */
.channel-group {
    padding: var(--space-3) var(--space-2);
}

.channel-group-header {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--btcu-gray-400);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.channel-group-header:hover {
    color: var(--btcu-gray-300);
}

.channel-group-header svg {
    width: 0.75rem;
    height: 0.75rem;
    transition: transform var(--transition-fast);
}

.channel-group.collapsed .channel-group-header svg {
    transform: rotate(-90deg);
}

.channel-list {
    margin-top: var(--space-1);
}

.channel-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    color: var(--btcu-gray-400);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.channel-item:hover {
    background: rgba(201, 184, 150, 0.1);
    color: var(--btcu-gray-200);
}

.channel-item.active {
    background: rgba(201, 184, 150, 0.15);
    color: var(--btcu-white);
}

.channel-item svg {
    width: 1.25rem;
    height: 1.25rem;
    opacity: 0.7;
}

.channel-item.active svg {
    opacity: 1;
}

.channel-item-badge {
    margin-left: auto;
    min-width: 1.25rem;
    height: 1.25rem;
    padding: 0 var(--space-1);
    background: var(--btcu-orange);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--btcu-white);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Sidebar User Section */
.campus-sidebar-user {
    margin-top: auto;
    padding: var(--space-3);
    background: rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.sidebar-user-avatar {
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--btcu-gold), var(--btcu-orange));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--btcu-navy);
}

.sidebar-user-info {
    flex: 1;
    min-width: 0;
}

.sidebar-user-name {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--btcu-white);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-status {
    font-size: var(--text-xs);
    color: var(--btcu-success);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.sidebar-user-status::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--btcu-success);
    border-radius: 50%;
}

.sidebar-user-actions {
    display: flex;
    gap: var(--space-1);
}

.sidebar-user-action {
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--btcu-gray-400);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sidebar-user-action:hover {
    background: rgba(201, 184, 150, 0.1);
    color: var(--btcu-gray-200);
}

.sidebar-user-action svg {
    width: 1.25rem;
    height: 1.25rem;
}

/* ============================================
   CHAT MAIN AREA
============================================ */

.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

/* Chat Header */
.chat-header {
    height: 3rem;
    padding: 0 var(--space-4);
    background: var(--btcu-white);
    border-bottom: 1px solid var(--btcu-gray-200);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
}

.chat-header-channel {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: var(--font-semibold);
    color: var(--btcu-navy);
}

.chat-header-channel svg {
    width: 1.25rem;
    height: 1.25rem;
    color: var(--btcu-gray-400);
}

.chat-header-divider {
    width: 1px;
    height: 1.5rem;
    background: var(--btcu-gray-200);
}

.chat-header-topic {
    font-size: var(--text-sm);
    color: var(--btcu-gray-500);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-header-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.chat-header-action {
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--btcu-gray-500);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.chat-header-action:hover {
    background: var(--btcu-gray-100);
    color: var(--btcu-navy);
}

.chat-header-action svg {
    width: 1.25rem;
    height: 1.25rem;
}

/* Chat Messages Area */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

/* Message Group (same user, consecutive messages) */
.message-group {
    display: flex;
    gap: var(--space-3);
}

.message-avatar {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--btcu-gold), var(--btcu-orange));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--btcu-navy);
    flex-shrink: 0;
}

.message-avatar.admin {
    background: linear-gradient(135deg, var(--btcu-navy), var(--btcu-navy-light));
    color: var(--btcu-gold);
}

.message-avatar.mentor {
    background: linear-gradient(135deg, var(--btcu-success), #059669);
    color: var(--btcu-white);
}

.message-content {
    flex: 1;
    min-width: 0;
}

.message-header {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
    margin-bottom: var(--space-1);
}

.message-author {
    font-weight: var(--font-semibold);
    color: var(--btcu-navy);
}

.message-author.admin {
    color: var(--btcu-orange);
}

.message-author.mentor {
    color: var(--btcu-success);
}

.message-badge {
    padding: var(--space-0) var(--space-2);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.message-badge.admin {
    background: var(--btcu-orange);
    color: var(--btcu-white);
}

.message-badge.mentor {
    background: var(--btcu-success);
    color: var(--btcu-white);
}

.message-badge.vanguard {
    background: var(--btcu-gold);
    color: var(--btcu-navy);
}

.message-timestamp {
    font-size: var(--text-xs);
    color: var(--btcu-gray-400);
}

.message-text {
    font-size: var(--text-base);
    color: var(--btcu-gray-700);
    line-height: var(--leading-relaxed);
    word-wrap: break-word;
}

.message-text p {
    margin: 0;
}

.message-text p + p {
    margin-top: var(--space-2);
}

.message-text code {
    background: var(--btcu-gray-100);
    padding: var(--space-0) var(--space-1);
    border-radius: var(--radius-sm);
    font-size: 0.9em;
}

.message-text a {
    color: var(--btcu-orange);
}

/* Message Reactions */
.message-reactions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1);
    margin-top: var(--space-2);
}

.message-reaction {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-2);
    background: var(--btcu-gray-100);
    border: 1px solid var(--btcu-gray-200);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    color: var(--btcu-gray-600);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.message-reaction:hover {
    background: var(--btcu-gray-200);
}

.message-reaction.active {
    background: rgba(247, 147, 26, 0.1);
    border-color: var(--btcu-orange);
    color: var(--btcu-orange);
}

/* Date Separator */
.chat-date-separator {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin: var(--space-4) 0;
}

.chat-date-separator::before,
.chat-date-separator::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--btcu-gray-200);
}

.chat-date-separator span {
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    color: var(--btcu-gray-500);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
}

/* Welcome Message */
.chat-welcome {
    padding: var(--space-6);
    text-align: center;
}

.chat-welcome-icon {
    width: 4rem;
    height: 4rem;
    margin: 0 auto var(--space-4);
    background: var(--btcu-gold-light);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--btcu-navy);
}

.chat-welcome-icon svg {
    width: 2rem;
    height: 2rem;
}

.chat-welcome h3 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-2);
}

.chat-welcome p {
    color: var(--btcu-gray-500);
    max-width: 30rem;
    margin: 0 auto;
}

/* Chat Input */
.chat-input-container {
    padding: var(--space-4);
    background: var(--btcu-white);
    border-top: 1px solid var(--btcu-gray-200);
}

.chat-input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: var(--space-3);
    padding: var(--space-3);
    background: var(--btcu-gray-100);
    border-radius: var(--radius-xl);
}

.chat-input-actions {
    display: flex;
    gap: var(--space-1);
}

.chat-input-action {
    width: 2.25rem;
    height: 2.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--btcu-gray-500);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.chat-input-action:hover {
    background: var(--btcu-gray-200);
    color: var(--btcu-navy);
}

.chat-input-action svg {
    width: 1.25rem;
    height: 1.25rem;
}

.chat-input {
    flex: 1;
    min-height: 1.5rem;
    max-height: 10rem;
    padding: var(--space-1) 0;
    background: transparent;
    border: none;
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--btcu-navy);
    resize: none;
    outline: none;
}

.chat-input::placeholder {
    color: var(--btcu-gray-400);
}

.chat-send-btn {
    width: 2.25rem;
    height: 2.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--btcu-orange);
    border: none;
    border-radius: var(--radius-md);
    color: var(--btcu-white);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.chat-send-btn:hover {
    background: var(--btcu-orange-dark);
}

.chat-send-btn:disabled {
    background: var(--btcu-gray-300);
    cursor: not-allowed;
}

.chat-send-btn svg {
    width: 1.25rem;
    height: 1.25rem;
}

/* ============================================
   MEMBERS SIDEBAR
============================================ */

.members-sidebar {
    width: 15rem;
    background: var(--btcu-white);
    border-left: 1px solid var(--btcu-gray-200);
    overflow-y: auto;
    flex-shrink: 0;
}

.members-group {
    padding: var(--space-4);
}

.members-group-header {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--btcu-gray-500);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    margin-bottom: var(--space-2);
}

.member-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.member-item:hover {
    background: var(--btcu-gray-100);
}

.member-avatar {
    position: relative;
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--btcu-gold), var(--btcu-orange));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--btcu-navy);
}

.member-avatar.admin {
    background: linear-gradient(135deg, var(--btcu-navy), var(--btcu-navy-light));
    color: var(--btcu-gold);
}

.member-avatar.mentor {
    background: linear-gradient(135deg, var(--btcu-success), #059669);
    color: var(--btcu-white);
}

.member-status {
    position: absolute;
    bottom: -2px;
    right: -2px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--btcu-white);
}

.member-status.online {
    background: var(--btcu-success);
}

.member-status.idle {
    background: var(--btcu-warning);
}

.member-status.offline {
    background: var(--btcu-gray-400);
}

.member-info {
    flex: 1;
    min-width: 0;
}

.member-name {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--btcu-navy);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.member-role {
    font-size: var(--text-xs);
    color: var(--btcu-gray-500);
}

/* ============================================
   RESPONSIVE STYLES
============================================ */

@media (max-width: 1200px) {
    .members-sidebar {
        display: none;
    }
}

@media (max-width: 1024px) {
    .campus-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .campus-sidebar {
        position: fixed;
        left: 0;
        top: var(--header-height);
        bottom: 0;
        z-index: var(--z-overlay);
        transform: translateX(-100%);
        transition: transform var(--transition-default);
    }
    
    .campus-sidebar.open {
        transform: translateX(0);
    }
    
    .campus-homeroom {
        height: auto;
        min-height: calc(100vh - var(--header-height));
    }
    
    .chat-main {
        height: calc(100vh - var(--header-height));
    }
    
    /* Mobile sidebar toggle button */
    .mobile-sidebar-toggle {
        display: flex;
    }
}

@media (min-width: 769px) {
    .mobile-sidebar-toggle {
        display: none;
    }
}

/* Mobile overlay when sidebar is open */
.campus-sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: calc(var(--z-overlay) - 1);
}

.campus-sidebar-overlay.open {
    display: block;
}