/* Kerbzh.fr-Inspired Design */
:root {
    --primary-orange: #FF3E00;
    --primary-orange-hover: #E63800;
    --dark-navy: #111827;
    --gray-600: #4B5563;
    --gray-500: #6B7280;
    --gray-400: #9CA3AF;
    --gray-300: #D1D5DB;
    --gray-200: #E5E7EB;
    --gray-100: #F3F4F6;
    --gray-50: #F9FAFB;
    --white: #FFFFFF;
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--gray-50);
    color: var(--dark-navy);
    height: 100vh; /* Fallback for older browsers */
    height: 100dvh; /* Dynamic viewport height for mobile browsers */
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Container */
.container {
    display: flex;
    flex-direction: column;
    height: 100vh; /* Fallback */
    height: 100dvh; /* Dynamic height */
    width: 100%;
    max-width: 1000px;
    background: var(--white);
    position: relative;
    overflow: hidden;
}

@media (min-width: 1024px) {
    .container {
        height: 90vh;
        height: 90dvh;
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-md);
        border: 1px solid var(--gray-200);
    }
}

/* Header */
.chat-header {
    background: var(--white);
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--gray-200);
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.header-logo a:hover {
    opacity: 0.8;
}

.app-logo {
    height: 40px;
    width: auto;
}

.app-text {
    height: 28px;
    width: auto;
}

.user-info {
    display: flex;
    flex-direction: column;
    text-align: right;
    font-size: 0.875rem;
    gap: 0.125rem;
}

.user-info span:first-child {
    font-weight: 600;
    color: var(--dark-navy);
}

.user-info span:last-child {
    color: var(--gray-500);
}

/* Subnet Selector */
.subnet-selector {
    background: var(--gray-50);
    padding: 0.875rem 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    flex-wrap: wrap;
}

.mask-form {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--gray-300);
}

.mask-form label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-600);
}

.mask-form select {
    border: none;
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark-navy);
    cursor: pointer;
    background: transparent;
    outline: none;
}

.private-chat-form {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--gray-300);
}

.private-chat-form label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-600);
    white-space: nowrap;
}

.private-chat-form input[type="text"] {
    border: none;
    font-family: inherit;
    font-size: 0.875rem;
    color: var(--dark-navy);
    background: transparent;
    outline: none;
    width: 140px;
    padding: 0.25rem 0.5rem;
}

.private-chat-form input[type="text"]:focus {
    background: var(--gray-50);
    border-radius: 0.25rem;
}

.private-chat-form button {
    padding: 0.375rem 0.875rem;
    border-radius: 0.375rem;
    border: none;
    background: var(--primary-orange);
    color: white;
    font-weight: 600;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.private-chat-form button:hover {
    background: var(--primary-orange-hover);
}

.private-chat-form button:active {
    transform: scale(0.98);
}

/* Chat Container */
.chat-container {
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
    position: relative;
    background: var(--white);
}

.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    scroll-behavior: smooth;
    background: var(--gray-50);
}

/* Messages */
.date-separator {
    display: flex;
    justify-content: center;
    margin: 1rem 0;
    position: relative;
    width: 100%;
}

.date-separator span {
    background: var(--white);
    color: var(--gray-500);
    padding: 0.375rem 1rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 500;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    text-transform: capitalize;
}

.message {
    max-width: 70%;
    padding: 0.875rem 1rem;
    border-radius: var(--radius-lg);
    position: relative;
    animation: slideIn 0.2s ease-out;
    line-height: 1.5;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.own-message {
    align-self: flex-end;
    background: var(--primary-orange);
    color: white;
    border-bottom-right-radius: 0.25rem;
}

.other-message {
    align-self: flex-start;
    background: var(--white);
    color: var(--dark-navy);
    border: 1px solid var(--gray-200);
    border-bottom-left-radius: 0.25rem;
}

.other-message.file-message {
    background: #f8fafc;
    /* Slightly different gray/blue */
    border-left: 3px solid #6366f1;
    /* Indigo accent indicator */
}

.own-message.file-message {
    background: #ea580c;
    /* Slightly darker orange */
    border-right: 3px solid #fff;
}

.message-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.25rem;
    font-size: 0.75rem;
    gap: 1rem;
}

.own-message .message-header {
    color: rgba(255, 255, 255, 0.85);
}

.other-message .message-header {
    color: var(--gray-500);
}

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

.user-ip i {
    margin-right: 0.375rem;
}

.timestamp {
    font-variant-numeric: tabular-nums;
}

.timestamp i {
    margin-right: 0.375rem;
}

.message-content {
    font-size: 0.9375rem;
    word-wrap: break-word;
}

.message-content a {
    color: inherit;
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* Clickable IP addresses */
.clickable-ip {
    cursor: pointer;
    transition: opacity 0.2s ease;
    text-decoration: none !important;
}

.clickable-ip:hover {
    opacity: 0.7;
    text-decoration: underline !important;
}

/* Private mode styling */
.private-mode-indicator {
    color: var(--primary-orange);
    font-weight: 600;
}

.back-to-subnet {
    display: inline-block;
    margin-top: 0.25rem;
    font-size: 0.75rem;
    color: var(--gray-600);
    text-decoration: none;
    transition: color 0.2s ease;
}

.back-to-subnet:hover {
    color: var(--primary-orange);
}

.own-message .message-content a {
    color: white;
}

.other-message .message-content a {
    color: var(--primary-orange);
}

/* Input Area */
.message-form {
    padding: 1rem 1.5rem;
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.message-form input[type="text"] {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray-300);
    background: var(--white);
    border-radius: var(--radius-lg);
    font-size: 0.9375rem;
    font-family: inherit;
    transition: all 0.2s ease;
}

.message-form input[type="text"]:focus {
    outline: none;
    border-color: var(--primary-orange);
    box-shadow: 0 0 0 3px rgba(255, 62, 0, 0.1);
}

.file-upload-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-600);
    cursor: pointer;
    transition: all 0.2s ease;
}

.file-upload-btn:hover {
    background: var(--gray-200);
    border-color: var(--gray-400);
    color: var(--dark-navy);
}

.file-upload-btn i {
    font-size: 1rem;
}

.message-form button {
    padding: 0 1.5rem;
    height: 44px;
    border-radius: var(--radius-lg);
    border: none;
    background: var(--primary-orange);
    color: white;
    font-weight: 600;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.message-form button:hover {
    background: var(--primary-orange-hover);
}

.message-form button:active {
    transform: scale(0.98);
}

/* Custom Scrollbar */
.messages-container::-webkit-scrollbar {
    width: 6px;
}

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

.messages-container::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 3px;
}

.messages-container::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .chat-header {
        padding: 0.875rem 1rem;
    }

    .header-logo {
        gap: 0.5rem;
    }

    .app-logo {
        height: 36px;
    }

    .app-text {
        height: 24px;
    }

    .user-info {
        font-size: 0.75rem;
    }

    .subnet-selector {
        padding: 0.75rem 1rem;
    }

    .messages-container {
        padding: 1rem;
    }

    .message {
        max-width: 85%;
        padding: 0.75rem 0.875rem;
    }

    .message-form {
        padding: 0.875rem 1rem;
    }

    .message-form input[type="text"] {
        padding: 0.625rem 0.875rem;
    }

    .message-form button {
        padding: 0 1.25rem;
    }

    .file-upload-btn {
        width: 40px;
        height: 40px;
    }
    
    /* Prevent iOS zoom on inputs */
    .message-form input[type="text"],
    .private-chat-form input[type="text"],
    .mask-form select {
        font-size: 16px !important; /* Forces 16px to prevent auto-zoom on iOS */
    }

    /* Better wrapping for small screens */
    .subnet-selector {
        justify-content: center;
    }
    
    .private-chat-form {
        width: 100%;
        justify-content: space-between;
    }

    .private-chat-form input[type="text"] {
        flex: 1;
        width: auto;
    }
}

/* Extra small screens fix */
@media (max-width: 380px) {
    .chat-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .user-info {
        text-align: left;
        width: 100%;
        padding-top: 0.5rem;
        border-top: 1px dashed var(--gray-200);
    }
}

/* ===================================
   WELCOME PAGE STYLES
   =================================== */

/* Welcome body - different from chat body */
body.welcome-body {
    background: linear-gradient(135deg, var(--gray-50) 0%, #fff 100%);
    overflow-y: auto;
    height: auto;
    min-height: 100vh;
    padding: 2rem 1rem;
}

.welcome-container {
    max-width: 900px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    overflow: hidden;
}

/* Welcome Header */
.welcome-header {
    background: var(--white);
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Hero Section */
.welcome-hero {
    text-align: center;
    padding: 3rem 2rem 2rem;
    background: linear-gradient(135deg, #fff 0%, var(--gray-50) 100%);
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-navy);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-title .highlight {
    color: var(--primary-orange);
    position: relative;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Info Cards Grid */
.info-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 2rem;
}

.info-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-xs);
}

.info-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--gray-300);
}

.card-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-orange) 0%, var(--primary-orange-hover) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    box-shadow: 0 4px 12px rgba(255, 62, 0, 0.2);
}

.card-icon i {
    font-size: 1.5rem;
    color: white;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark-navy);
    margin-bottom: 0.75rem;
}

.card-text {
    font-size: 0.9375rem;
    color: var(--gray-600);
    line-height: 1.7;
}

.card-text strong {
    color: var(--dark-navy);
    font-weight: 600;
}

/* Privacy card accent */
.card-privacy {
    background: linear-gradient(135deg, #f0fdf4 0%, #fff 100%);
    border-left: 4px solid #10b981;
}

.card-privacy .card-icon {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
}

.privacy-highlight {
    color: #059669;
    font-weight: 600;
}

/* Warning card accent */
.card-warning {
    background: linear-gradient(135deg, #fef3c7 0%, #fff 100%);
    border-left: 4px solid #f59e0b;
}

.card-warning .card-icon {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.2);
}

.card-warning .card-text {
    color: #92400e;
}

.card-warning .card-text strong {
    color: #78350f;
}

/* Accept Actions */
.welcome-actions {
    text-align: center;
    padding: 2rem;
    background: var(--gray-50);
    border-top: 1px solid var(--gray-200);
}

.accept-form {
    margin-bottom: 1rem;
}

.btn-accept {
    padding: 1rem 3rem;
    font-size: 1.125rem;
    font-weight: 700;
    color: white;
    background: linear-gradient(135deg, var(--primary-orange) 0%, var(--primary-orange-hover) 100%);
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(255, 62, 0, 0.3);
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
}

.btn-accept:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(255, 62, 0, 0.4);
}

.btn-accept:active {
    transform: translateY(0);
}

.btn-accept i {
    font-size: 1.25rem;
}

.terms-text {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-top: 1rem;
}

/* Responsive for Welcome Page */
@media (max-width: 768px) {
    body.welcome-body {
        padding: 1rem 0.5rem;
    }

    .welcome-container {
        border-radius: var(--radius-lg);
    }

    .welcome-header {
        padding: 1.25rem 1.5rem;
    }

    .welcome-hero {
        padding: 2rem 1.5rem 1.5rem;
    }

    .hero-title {
        font-size: 1.875rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .info-cards {
        padding: 1.5rem;
        gap: 1.25rem;
    }

    .info-card {
        padding: 1.5rem;
    }

    .card-icon {
        width: 48px;
        height: 48px;
    }

    .card-icon i {
        font-size: 1.25rem;
    }

    .card-title {
        font-size: 1.125rem;
    }

    .welcome-actions {
        padding: 1.5rem;
    }

    .btn-accept {
        padding: 0.875rem 2rem;
        font-size: 1rem;
    }
}

@media (min-width: 768px) {
    .info-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .info-card:last-child {
        grid-column: 1 / -1;
    }
}

/* Tooltip Styles */
.tooltip-trigger {
    position: relative;
    cursor: help;
    border-bottom: 1px dotted var(--dark-navy);
}

.tooltip-trigger::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--dark-navy);
    color: white;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 400;
    width: 280px;
    text-align: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease-out;
    pointer-events: none;
    z-index: 100;
    box-shadow: var(--shadow-md);
    line-height: 1.4;
    margin-bottom: 0.5rem;
}

.tooltip-trigger::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    border-width: 6px;
    border-style: solid;
    border-color: var(--dark-navy) transparent transparent transparent;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease-out;
    pointer-events: none;
    z-index: 100;
    margin-bottom: -1px;
}

.tooltip-trigger:hover::after,
.tooltip-trigger:hover::before {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}