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

html, body {
    height: 100%;
    overflow: hidden; /* prevents double scrollbars */
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    color: #ffffff;
    display: flex;
    flex-direction: column;
}

/* Main container */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 100vw;
}

/* Header */
.chat-header {
    background: rgba(20, 20, 20, 0.95);
    border-bottom: 1px solid #333;
    padding: 1rem 1.5rem;
    backdrop-filter: blur(10px);
    flex-shrink: 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #00ff88;
}

.encryption-badge {
    background: linear-gradient(45deg, #00ff88, #00cc6a);
    color: #000;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.85rem;
}

/* Welcome screen */
.welcome-screen {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    text-align: center;
}

.welcome-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, #00ff88, #ffffff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-subtitle {
    font-size: 1.1rem;
    color: #aaa;
    margin-bottom: 3rem;
    max-width: 600px;
    line-height: 1.6;
}

.room-section {
    margin-bottom: 3rem;
}

.room-input-container {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.room-input {
    padding: 0.75rem 1rem;
    border: 2px solid #333;
    border-radius: 8px;
    background: #1a1a1a;
    color: #fff;
    font-size: 1rem;
    min-width: 200px;
}

.room-input:focus {
    outline: none;
    border-color: #00ff88;
    box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.1);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    background: linear-gradient(45deg, #00ff88, #00cc6a);
    color: #000;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 255, 136, 0.3);
}

.btn-secondary {
    background: linear-gradient(45deg, #333, #555);
    color: #fff;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Status text */
.status-text {
    color: #aaa;
    margin-top: 1rem;
    min-height: 24px;
}

.loading-message {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.loading-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid #333;
    border-top: 2px solid #00ff88;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.error-message {
    color: #ff4444;
    font-weight: 600;
}

.success-message {
    color: #00ff88;
    font-weight: 600;
}

/* Features */
.feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    max-width: 1000px;
    margin-top: 2rem;
}

.feature-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid #333;
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.feature-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #fff;
}

.feature-desc {
    color: #aaa;
    font-size: 0.9rem;
    line-height: 1.4;
}

/* Room info */
.room-info {
    background: rgba(20, 20, 20, 0.95);
    border-bottom: 1px solid #333;
    padding: 0.75rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 0.75rem;
    position: sticky;
    top: 0;
    z-index: 10;
}

.room-details {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-start;
    flex: 0 0 auto;
    min-width: auto;
}

.room-details span {
    color: #aaa;
    font-size: 0.85rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

.room-details strong {
    color: #00ff88;
}

.room-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

/* Chat screen & messages */
.chat-screen {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.messages-wrapper {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    scroll-behavior: smooth;
    padding-bottom: 80px; /* leave space for input */
}

.message-group {
    display: flex;
    flex-direction: column;
    animation: fadeIn 0.3s ease-out;
}

/* Align left vs right */
.message-group.sent {
    align-items: flex-end;
    margin-left: auto;
}

.message-group.received {
    align-items: flex-start;
    margin-right: auto;
}

.message-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
    font-size: 0.8rem;
    color: #888;
}

.message-group.sent .message-header {
    flex-direction: row-reverse;
}

/* System messages */
.message-group.system {
    align-items: center;
    justify-content: center;
    margin: 0.5rem auto;
    text-align: center;
    max-width: 100%;
}

.message-group.system .message-content {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid #444;
    color: #ccc;
    font-size: 0.85rem;
    font-style: italic;
    border-radius: 12px;
    padding: 0.35rem 0.75rem;
    width: fit-content;   /* 👈 shrink to text */
    max-width: 90%;       /* still wrap if very long */
    text-align: center;
}

.user-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(45deg, #00ff88, #00cc6a);
    color: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 700;
}

.user-avatar.own {
    background: linear-gradient(45deg, #0088ff, #0066cc);
    color: #fff;
}

.user-name {
    font-weight: 600;
}

.message-time {
    font-size: 0.75rem;
    opacity: 0.7;
}

/* The bubble */
.message-content {
    display: inline-block;
    background: #2d2d2d;
    border: 1px solid #404040;
    border-radius: 12px;
    padding: 0.5rem 0.75rem;
    word-wrap: break-word;
    max-width: 75%; /* prevents overly long messages */
    width: auto; /* shrink to fit content */
    position: relative;
    text-align: left;
}

.message-group.sent .message-content {
    background: #1a4d3a;
    border-color: #00ff88;
    text-align: left; /* keep text natural */
}

/* Input section */
.input-section {
    padding: 0.75rem 1rem;
    background: rgba(20, 20, 20, 0.95);
    border-top: 1px solid #333;
    position: sticky;
    bottom: 0;
    left: 0;
    width: 100%;
    flex-shrink: 0;
}

.input-container {
    display: flex;
    gap: 0.5rem;
    align-items: flex-end;
}

.message-input {
    flex: 1;
    border: 2px solid #333;
    border-radius: 12px;
    background: #1a1a1a;
    color: #fff;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-family: inherit;
    resize: none;
    max-height: 120px;
    min-height: 44px;
}

.message-input:focus {
    outline: none;
    border-color: #00ff88;
    box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.1);
}

.message-input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.send-button {
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background: linear-gradient(45deg, #00ff88, #00cc6a);
    color: #000;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    flex-shrink: 0;
}

.send-button:hover:not(:disabled) {
    transform: scale(1.1);
    box-shadow: 0 4px 15px rgba(0, 255, 136, 0.3);
}

.send-button:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Security indicator */
.security-indicator {
    position: fixed;
    bottom: calc(1rem + 70px);
    right: 20px;
    background: rgba(0, 0, 0, 0.8);
    color: #00ff88;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    border: 1px solid #00ff88;
    z-index: 1000;
}

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

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

/* Responsive */
@media (max-width: 768px) {
    .welcome-title {
        font-size: 2rem;
    }

    .room-input-container {
        flex-direction: column;
        align-items: stretch;
    }

    .room-input {
        min-width: 100%;
    }

    .feature-list {
        grid-template-columns: 1fr;
    }

    .room-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
        padding: 0.75rem;
    }

    .room-details {
        width: 100%;
    }

    .room-actions {
        width: 100%;
        justify-content: flex-end;
    }

    .message-content {
        max-width: 85%;
    }

    .input-section {
        padding: 0.75rem;
    }
}

@media (max-width: 480px) {
    .room-details span {
        font-size: 0.8rem;
    }

    .btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    .message-content {
        max-width: 90%;
    }
}

/* Accessibility */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.btn:focus,
.room-input:focus,
.message-input:focus,
.send-button:focus {
    outline: 2px solid #00ff88;
    outline-offset: 2px;
}

/* moved from html */
ul.release-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

ul.release-list li {
    background: linear-gradient(135deg, #1e1e1e, #2a2a2a);
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.5);
    padding: 1rem 1.5rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

ul.release-list li:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.7);
}

ul.release-list a {
    font-weight: 600;
    font-size: 1.1rem;
    font-style: italic;
    color: #00f683;
    text-decoration: none;
}

ul.release-list a:hover {
    text-decoration: underline;
}

.pub-date {
    font-size: 0.85rem;
    color: #a0a0a0;
    margin-top: 0.25rem;
}

.author {
    font-size: 0.75rem;
    color: #7a7a7a;
    margin-top: 0.25rem;
    margin-bottom: 0.5rem;
}

.release-content {
    font-size: 0.9rem;
    color: #c0c0c0;
    line-height: 1.4;
}
.laptopimg:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

/* Responsive adjustments for smaller screens */
@media (max-width: 480px) {
    .laptopimg {
        margin-bottom: 1rem !important;
    }
}

/* Ensure images are responsive and maintain aspect ratio */
.laptopimg {
    max-width: 100%;
    object-fit: contain;
}

/* discovery */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.room-card {
    background: #252525;
    border: 1px solid #333;
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 0.75rem;
    transition: all 0.2s ease;
    cursor: pointer;
}

.room-card:hover {
    background: #2a2a2a;
    border-color: #00ff88;
    transform: translateY(-1px);
}

.room-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 0.5rem 0;
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.room-description {
    color: #b0b0b0;
    font-size: 0.9rem;
    margin: 0 0 0.75rem 0;
    line-height: 1.4;
}

.room-stats {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    font-size: 0.8rem;
    color: #888;
}

.room-stat {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.activity-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.activity-active { background: #00ff88; }
.activity-recent { background: #ffa500; }
.activity-old { background: #666; }

@media (max-width: 768px) {
    .room-stats {
        gap: 0.5rem;
    }
    
    .room-card {
        padding: 0.75rem;
    }
}