/* Modern Mobile-First Design System */

/* CSS Variables for themes */
:root {
    /* Colors */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #22d3ee;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --success-color: #10b981;

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

    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Font sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* Light theme */
.light-theme {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --message-own-bg: #6366f1;
    --message-own-text: #ffffff;
    --message-other-bg: #f1f5f9;
    --message-other-text: #0f172a;
}

/* Dark theme */
.dark-theme {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --border-color: #334155;
    --border-light: #475569;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.25);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4);
    --message-own-bg: #6366f1;
    --message-own-text: #ffffff;
    --message-other-bg: #334155;
    --message-other-text: #f8fafc;
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    transition: background-color var(--transition-base), color var(--transition-base);
    overflow-x: hidden;
    min-height: 100vh;
    min-height: -webkit-fill-available;
}

/* Container */
.container {
    width: 100%;
    min-height: 100vh;
    min-height: -webkit-fill-available;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(var(--bg-secondary), 0.9);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* Logo styling */
.logo-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    transition: all 0.2s ease;
}

.logo-link:hover {
    transform: scale(1.02);
    filter: brightness(1.1);
}

.header-icon {
    height: 42px; /* Reduced by 50% from 84px */
    width: auto;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.header-logo {
    height: 32px; /* Reduced by 33% from 48px */
    width: auto;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
}

/* Fallback for old h1 styles in case needed elsewhere */
header h1 {
    font-size: var(--text-xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.theme-toggle .theme-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all var(--transition-base);
}

.theme-btn:hover {
    transform: scale(1.05);
    background: var(--primary-light);
}

.theme-btn:active {
    transform: scale(0.95);
}

.theme-icon {
    display: inline-block;
    font-size: 1.2rem;
    line-height: 1;
    transition: all var(--transition-base);
    user-select: none;
    text-align: center;
}

/* Main content */
main {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-md);
    max-width: 100%;
}

/* Footer */
footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-md);
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

/* Landing Page */
.main-menu {
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
    padding: var(--spacing-md);
}

.menu-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
}

.menu-card h2 {
    font-size: var(--text-2xl);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.menu-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    font-size: var(--text-base);
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* Buttons */
.btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    min-height: 48px;
    touch-action: manipulation;
    -webkit-user-select: none;
    user-select: none;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

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

.btn-outline:hover {
    background: var(--bg-tertiary);
}

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

.btn-danger:hover {
    filter: brightness(1.1);
}

.btn-icon {
    width: 48px;
    height: 48px;
    padding: 0;
    border-radius: var(--radius-full);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}

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

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: slideUp var(--transition-base);
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: var(--text-xl);
    font-weight: 600;
}

.modal-close {
    background: transparent;
    border: none;
    font-size: var(--text-2xl);
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
}

.modal-close:hover {
    background: var(--bg-tertiary);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* Input groups */
.input-group {
    margin-bottom: var(--spacing-lg);
}

.input-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
}

.input-group input,
.input-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.input-group input:focus,
.input-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.room-input {
    font-family: 'Courier New', 'Consolas', 'Monaco', monospace;
    font-size: var(--text-2xl);
    font-weight: 600;
    text-align: center;
    letter-spacing: 0.15em;
    /* Don't transform - show exact case as typed */
}

.help-text {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    margin-top: var(--spacing-xs);
}

/* Room ID Display */
.room-id-display {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.room-id {
    font-family: 'Courier New', 'Consolas', 'Monaco', monospace;
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 0.2em;
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border: 2px dashed var(--border-color);
    /* Preserve original case */
}

.warning {
    color: var(--warning-color);
    font-size: var(--text-sm);
    margin-top: var(--spacing-md);
}

/* Chat Container */
.chat-container {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 120px);
    max-width: 100%;
    margin: 0 auto;
    width: 100%;
}

/* Status Bar */
.status-bar {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: space-between;
    align-items: center;
}

.status-left {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    flex: 1;
}

.room-status {
    font-weight: 600;
    color: var(--text-primary);
}

.room-id-small {
    font-family: 'Courier New', 'Consolas', 'Monaco', monospace;
    font-size: var(--text-base);
    color: var(--text-secondary);
    font-weight: 600;
    letter-spacing: 0.1em;
}

.connection-indicators {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.security-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    width: fit-content;
}

.lock-icon {
    font-size: var(--text-lg);
}

#securityText {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.participant-list {
    display: flex;
    gap: var(--spacing-md);
}

.participant-status {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    min-width: 120px;
}

.participant-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.participant-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.participant-dot {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
    background: var(--danger-color);
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.participant-dot.online {
    background: var(--success-color);
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
    animation: pulse 2s infinite;
}

.participant-dot.offline {
    background: var(--danger-color);
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.2);
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.7;
    }
}

.participant-label {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.participant-role {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    line-height: 1.2;
    font-weight: 500;
}

.timer {
    font-size: var(--text-sm);
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

/* Messages Container */
.messages-container {
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-md);
}

.messages-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.messages-list::-webkit-scrollbar {
    width: 6px;
}

.messages-list::-webkit-scrollbar-track {
    background: transparent;
}

.messages-list::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-full);
}

/* Messages */
.message {
    display: flex;
    flex-direction: column;
    animation: fadeIn var(--transition-base);
    max-width: 85%;
    margin-bottom: var(--spacing-md);
    word-wrap: break-word;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.own {
    align-self: flex-end;
    align-items: flex-end;
}

.message.other {
    align-self: flex-start;
    align-items: flex-start;
}

.message-content {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 18px;
    position: relative;
    max-width: 100%;
    word-break: break-word;
    overflow-wrap: break-word;
    margin-bottom: 4px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.message.own .message-content {
    background: var(--primary-color);
    color: white;
    border-bottom-right-radius: 6px;
}

.message.other .message-content {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-bottom-left-radius: 6px;
    border: 1px solid var(--border-color);
}

.message-text {
    line-height: 1.4;
    font-size: var(--text-base);
}

.message-image {
    max-width: 250px;
    max-height: 300px;
    border-radius: 12px;
    margin-top: 6px;
    object-fit: cover;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.message-image:hover {
    transform: scale(1.02);
}

.message-meta {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    padding: 0 var(--spacing-xs);
    line-height: 1.3;
    font-weight: 500;
}

.message-header {
    font-size: var(--text-xs);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    opacity: 0.9;
}

.message-text {
    font-size: var(--text-base);
    line-height: 1.5;
    white-space: pre-wrap;
}

.message-time {
    font-size: var(--text-xs);
    opacity: 0.7;
    margin-top: var(--spacing-xs);
}

.message-image {
    max-width: 100%;
    border-radius: var(--radius-md);
    margin-top: var(--spacing-sm);
}

.system-message {
    text-align: center;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-tertiary);
    font-size: var(--text-sm);
    font-style: italic;
}

/* Message Input Area */
.message-input-area {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
}

.input-controls {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-end;
}

.input-controls .input-group {
    flex: 1;
    display: flex;
    gap: var(--spacing-sm);
    margin: 0;
}

#messageInput {
    flex: 1;
    resize: none;
    min-height: 48px;
    max-height: 120px;
    padding: var(--spacing-md);
}

.upload-area {
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.upload-preview {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.upload-preview-img {
    max-width: 100px;
    max-height: 100px;
    border-radius: var(--radius-md);
    object-fit: cover;
}

.upload-info {
    flex: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.btn-close {
    background: var(--danger-color);
    color: white;
    border: none;
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-actions {
    margin-top: var(--spacing-md);
    display: flex;
    justify-content: center;
}

/* Name Options */
.name-options {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
    margin: var(--spacing-lg) 0;
}

.name-option {
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: var(--text-base);
    font-weight: 500;
}

.name-option:hover {
    border-color: var(--primary-light);
    background: var(--bg-secondary);
}

.name-option.selected {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

/* Verification */
.verification-name {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--primary-color);
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
}

.verification-question {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* Room Code Display */
.room-code-display {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    margin: 0 var(--spacing-sm);
}

.room-code-label {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    font-weight: 500;
}

.room-code-value {
    font-family: 'Courier New', 'Consolas', 'Monaco', monospace;
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 0.15em;
    /* Preserve original case - no text-transform */
}

.btn-copy-code {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-copy-code:hover {
    background: var(--primary-dark);
    transform: scale(1.05);
}

.btn-copy-code.copied {
    background: var(--success-color);
}

.copy-icon {
    width: 16px;
    height: 16px;
    display: inline-block;
    vertical-align: middle;
}

.copy-text {
    display: none;
}

@media (min-width: 768px) {
    .copy-text {
        display: inline;
    }
}

/* Room Lock Status - Enhanced */
.lock-icon {
    font-size: var(--text-xl);
    margin-right: var(--spacing-xs);
    transition: all var(--transition-base);
}

.lock-icon.unlocked {
    color: var(--warning-color);
    animation: pulse 2s infinite;
}

.lock-icon.locked {
    color: var(--success-color);
    animation: lock-click 0.5s ease;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.1);
    }
}

@keyframes lock-click {
    0% {
        transform: scale(1) rotate(0deg);
    }
    50% {
        transform: scale(1.2) rotate(-5deg);
    }
    100% {
        transform: scale(1) rotate(0deg);
    }
}

.security-status {
    display: flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.security-status.waiting {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--warning-color);
}

.security-status.secured {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success-color);
}

/* Room Destroyed Modal */
.room-destroyed-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.room-destroyed-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.room-destroyed-content {
    position: relative;
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    max-width: 400px;
    width: 90%;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    animation: slideInScale 0.3s ease-out;
}

@keyframes slideInScale {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.room-destroyed-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.room-destroyed-content h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-size: var(--text-xl);
    font-weight: 600;
}

.room-destroyed-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.5;
}

.room-destroyed-content .btn {
    min-width: 120px;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-weight: 600;
}

/* Loading */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.loading-overlay.active {
    display: flex;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

#loadingText {
    color: white;
    margin-top: var(--spacing-md);
    font-size: var(--text-base);
}

/* Responsive Design */

/* Tablets */
@media (min-width: 768px) {
    header h1 {
        font-size: var(--text-2xl);
    }

    /* Larger logo on tablets and desktop */
    .header-icon {
        height: 72px; /* Increased by 50% from 48px */
    }

    .header-logo {
        height: 60px; /* Increased by 50% from 40px */
    }

    .container {
        padding: var(--spacing-lg);
    }

    .menu-card {
        padding: var(--spacing-2xl);
    }

    .action-buttons {
        flex-direction: row;
    }

    .modal-buttons {
        flex-direction: row;
        justify-content: flex-end;
    }

    .chat-container {
        max-width: 900px;
        height: calc(100vh - 140px);
    }

    .status-bar {
        flex-wrap: nowrap;
    }

    .status-left {
        flex-direction: row;
        align-items: center;
    }

    .connection-indicators {
        flex-direction: row;
        margin-top: 0;
    }

    .message {
        max-width: 70%;
    }

    .name-options {
        grid-template-columns: repeat(2, 1fr);
    }

    .input-controls {
        align-items: center;
    }
}

/* Desktop */
@media (min-width: 1024px) {
    .container {
        padding: var(--spacing-xl);
    }

    main {
        padding: var(--spacing-xl);
    }

    .chat-container {
        max-width: 1200px;
    }

    .message {
        max-width: 60%;
    }

    .name-options {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Mobile-specific fixes */
@media (max-width: 767px) {
    body {
        font-size: 16px;
    }

    .container {
        padding: 0;
    }

    header {
        border-radius: 0;
    }

    /* Adjusted logo on mobile */
    .header-icon {
        height: 36px; /* Reduced by 50% from 72px */
    }

    .header-logo {
        height: 28px; /* Reduced by 33% from 42px */
    }

    .header-left {
        gap: var(--spacing-xs);
    }

    main {
        padding: var(--spacing-sm);
    }

    .chat-container {
        height: calc(100vh - 100px);
    }

    .modal-content {
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        max-height: 100vh;
    }

    .btn {
        min-height: 44px;
    }

    .message-input-area {
        border-radius: 0;
        border-left: none;
        border-right: none;
        border-bottom: none;
    }

    #messageInput {
        font-size: 16px;
    }

    .room-input {
        font-size: var(--text-lg);
    }
}

/* iOS specific fixes */
@supports (-webkit-touch-callout: none) {
    body {
        min-height: -webkit-fill-available;
    }

    .chat-container {
        height: calc(100vh - 100px);
        height: calc(-webkit-fill-available - 100px);
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #0066ff;
        --danger-color: #ff0000;
        --success-color: #00aa00;
    }

    .light-theme {
        --bg-primary: #ffffff;
        --text-primary: #000000;
        --border-color: #000000;
    }

    .dark-theme {
        --bg-primary: #000000;
        --text-primary: #ffffff;
        --border-color: #ffffff;
    }
}

/* Image Modal */
.image-modal {
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.95);
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.image-modal-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 90vh;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    animation: modalZoomIn 0.3s ease;
}

@keyframes modalZoomIn {
    from {
        transform: translate(-50%, -50%) scale(0.8);
    }
    to {
        transform: translate(-50%, -50%) scale(1);
    }
}

.image-modal-caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #ccc;
    padding: 10px 0;
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 14px;
}

.image-modal-close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
    z-index: 2001;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-modal-close:hover,
.image-modal-close:focus {
    color: #fff;
    background: rgba(0, 0, 0, 0.8);
    transform: scale(1.1);
}

/* Make chat images clickable */
.message-image {
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.message-image:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}