.minimal-bg {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header-minimal {
    background: rgb(35 36 35 / 13%);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    flex-shrink: 0;
    height: 64px; 
}

.header-minimal .cursor-pointer:hover {
    transform: scale(1.05);
    transition: transform 0.2s ease;
}
.header-minimal .cursor-pointer:active {
    transform: scale(0.95);
}

/* The main chat container takes up the rest of the height. */
.chat-container {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 64px); /* 64px - header height */
    min-height: 0;
    flex: 1;
}

.chat-messages-area {
    flex: 1;
    min-height: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.chat-input-area {
    flex-shrink: 0;
    position: sticky;
    bottom: 0;
    background: rgba(42, 43, 42, 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(75, 85, 99, 0.2);
}

/* The message container must occupy the entire available height. */
.chat-messages-area > div:first-child {
    height: 100%;
    overflow-y: auto;
    padding: 1rem;
    scroll-behavior: smooth;
}

/* For mobile devices, take into account the height of the virtual keyboard */
@media (max-width: 768px) {
    .chat-container {
        height: calc(100vh - 64px);
        height: calc(100dvh - 64px); /* dvh to support dynamic height on mobile */
    }
}

/* Fix for main application container */
main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.card-minimal {
    background: rgba(42, 43, 42, 0.8);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(75, 85, 99, 0.2);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}
.card-minimal:hover {
    border-color: rgba(249, 115, 22, 0.3);
    transform: translateY(-1px);
    transition: all 0.2s ease;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 8px;
}
.status-connected { background: #10b981; }
.status-connecting { background: #6b7280; }
.status-failed { background: #ef4444; }
.status-disconnected { background: #6b7280; }
.status-verifying { background: #9ca3af; }

.security-shield {
    background: linear-gradient(135deg, #2A2B2A 0%, #3a3b3a 100%);
    border: 1px solid rgba(75, 85, 99, 0.3);
}

.verification-code {
    background: rgba(42, 43, 42, 0.8);
    border: 1px solid rgba(75, 85, 99, 0.3);
    color: #f1f5f9;
    font-family: 'Monaco', 'Menlo', monospace;
    letter-spacing: 0.1em;
    font-size: 1.2em;
    padding: 8px 12px;
    border-radius: 8px;
    text-align: center;
}

.icon-container {
    width: 40px;
    height: 40px;
    background: rgba(42, 43, 42, 0.8);
    border: 1px solid rgba(75, 85, 99, 0.3);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.icon-container i {
    font-size: 1.25rem;
    line-height: 1;
}

.icon-sm { font-size: 0.875rem; }
.icon-md { font-size: 1rem; }
.icon-lg { font-size: 1.125rem; }
.icon-xl { font-size: 1.25rem; }
.icon-2xl { font-size: 1.5rem; }

.step-number {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #f97316, #ea580c);
    color: white;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
}

.icon-fallback {
    display: inline-block;
    width: 1em;
    height: 1em;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

.fas, .far, .fab {
    display: inline-block;
    font-style: normal;
    font-variant: normal;
    text-rendering: auto;
    line-height: 1;
    vertical-align: middle;
}

/* Improve icon rendering */
.fas::before, .far::before, .fab::before {
    display: inline-block;
    font-style: normal;
    font-variant: normal;
    text-rendering: auto;
    line-height: 1;
}

/* Icon loading fallback */
.icon-loading {
    opacity: 0.7;
    animation: iconPulse 1.5s ease-in-out infinite;
}

/* Fallback icons content */
.fa-fallback .fas.fa-shield-halved::before { content: "🛡️"; }
.fa-fallback .fas.fa-shield-alt::before { content: "🛡️"; }
.fa-fallback .fas.fa-lock::before { content: "🔒"; }
.fa-fallback .fas.fa-unlock-alt::before { content: "🔓"; }
.fa-fallback .fas.fa-key::before { content: "🔑"; }
.fa-fallback .fas.fa-fingerprint::before { content: "👆"; }
.fa-fallback .fas.fa-exchange-alt::before { content: "🔄"; }
.fa-fallback .fas.fa-plus::before { content: "➕"; }
.fa-fallback .fas.fa-link::before { content: "🔗"; }
.fa-fallback .fas.fa-paste::before { content: "📋"; }
.fa-fallback .fas.fa-check-circle::before { content: "✅"; }
.fa-fallback .fas.fa-cogs::before { content: "⚙️"; }
.fa-fallback .fas.fa-rocket::before { content: "🚀"; }
.fa-fallback .fas.fa-copy::before { content: "📄"; }
.fa-fallback .fas.fa-check::before { content: "✓"; }
.fa-fallback .fas.fa-times::before { content: "✗"; }
.fa-fallback .fas.fa-exclamation-triangle::before { content: "⚠️"; }
.fa-fallback .fas.fa-info-circle::before { content: "ℹ️"; }
.fa-fallback .fas.fa-circle::before { content: "●"; }
.fa-fallback .fas.fa-paper-plane::before { content: "📤"; }
.fa-fallback .fas.fa-comments::before { content: "💬"; }
.fa-fallback .fas.fa-signature::before { content: "✍️"; }
.fa-fallback .fas.fa-power-off::before { content: "⏻"; }
.fa-fallback .fas.fa-arrow-left::before { content: "←"; }
.fa-fallback .fas.fa-chevron-down::before { content: "↓"; }

/* Ensure fallback icons are properly sized & use emoji font */
.fa-fallback .fas::before {
    font-family: "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    font-size: inherit;
}

/* Icon alignment in buttons */
button i {
    vertical-align: middle;
    margin-right: 0.5rem;
}

/* Pay-per-session UI */
.session-timer {
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    border: 1px solid rgba(249, 115, 22, 0.3);
    color: white;
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.session-timer.warning {
    background: linear-gradient(135deg, #eab308 0%, #ca8a04 100%);
    animation: pulse 2s ease-in-out infinite;
}

.session-timer.critical {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    animation: pulse 1s ease-in-out infinite;
}

/* Lightning button */
.lightning-button {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    border: 1px solid rgba(245, 158, 11, 0.3);
    transition: all 0.3s ease;
}
.lightning-button:hover {
    background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
    transform: translateY(-2px);
}

.btn-primary {
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    border: 1px solid rgba(249, 115, 22, 0.3);
}
.btn-primary:hover {
    background: linear-gradient(135deg, #ea580c 0%, #dc2626 100%);
    transform: translateY(-1px);
}

.btn-secondary {
    background: linear-gradient(135deg, #2A2B2A 0%, #3a3b3a 100%);
    border: 1px solid rgba(75, 85, 99, 0.3);
}
.btn-secondary:hover {
    background: linear-gradient(135deg, #3a3b3a 0%, #4a4b4a 100%);
    transform: translateY(-1px);
}

.btn-verify {
    background: linear-gradient(135deg, #2A2B2A 0%, #3a3b3a 100%);
    border: 1px solid rgba(75, 85, 99, 0.3);
}
.btn-verify:hover {
    background: linear-gradient(135deg, #3a3b3a 0%, #4a4b4a 100%);
    transform: translateY(-1px);
}

/* Wallet logos container & per-wallet filters */
.wallet-logos-container {
    display: flex;
    align-items: center;
    overflow: hidden;
    position: relative;
    height: 64px;
    margin: 20px 0;
    width: 100%;
}

.wallet-logos-track {
    display: flex;
    align-items: center;
    gap: 20px;
    animation: walletLogosScroll 30s linear infinite;
    width: max-content;
}

.wallet-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100px;
    height: 48px;
    background: rgba(42, 43, 42, 0.8);
    border: 1px solid rgba(75, 85, 99, 0.3);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    color: #f1f5f9;
    flex-shrink: 0;
    transition: all 0.3s ease;
}
.wallet-logo:hover {
    border-color: rgba(249, 115, 22, 0.3);
    background: rgba(249, 115, 22, 0.1);
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.wallet-logo.bitcoin-lightning { background: transparent; padding: 4px; }
.wallet-logo.bitcoin-lightning img { width: 48px; height: 48px; filter: brightness(0) saturate(100%) invert(43%) sepia(8%) saturate(670%) hue-rotate(202deg) brightness(97%) contrast(86%); }

.wallet-logo.impervious { background: transparent; padding: 4px; }
.wallet-logo.impervious img { width: 48px; height: 48px; filter: brightness(0) saturate(100%) invert(43%) sepia(8%) saturate(670%) hue-rotate(202deg) brightness(97%) contrast(86%); }

.wallet-logo.strike { background: transparent; padding: 4px; }
.wallet-logo.strike img { width: 48px; height: 48px; filter: brightness(0) saturate(100%) invert(43%) sepia(8%) saturate(670%) hue-rotate(202deg) brightness(97%) contrast(86%); }

.wallet-logo.lnbits { background: transparent; padding: 4px; }
.wallet-logo.lnbits img { width: 48px; height: 48px; filter: brightness(0) saturate(100%) invert(43%) sepia(8%) saturate(670%) hue-rotate(202deg) brightness(97%) contrast(86%); }

.wallet-logo.lightning-labs { background: transparent; padding: 4px; }
.wallet-logo.lightning-labs img { width: 48px; height: 48px; filter: brightness(0) saturate(100%) invert(43%) sepia(8%) saturate(670%) hue-rotate(202deg) brightness(97%) contrast(86%); }

.wallet-logo.atomic { background: transparent; padding: 4px; }
.wallet-logo.atomic img { width: 48px; height: 48px; filter: brightness(0) saturate(100%) invert(43%) sepia(8%) saturate(670%) hue-rotate(202deg) brightness(97%) contrast(86%); }

.wallet-logo.breez { background: transparent; padding: 4px; }
.wallet-logo.breez img { width: 48px; height: 48px; filter: brightness(0) saturate(100%) invert(43%) sepia(8%) saturate(670%) hue-rotate(202deg) brightness(97%) contrast(86%); }

.wallet-logo.alby { background: transparent; padding: 4px; }
.wallet-logo.alby img { width: 48px; height: 48px; filter: brightness(0) saturate(100%) invert(43%) sepia(8%) saturate(670%) hue-rotate(202deg) brightness(97%) contrast(86%); }

.wallet-logo.phoenix { background: transparent; }
.wallet-logo.blixt { background: transparent; }
.wallet-logo.zeus { background: transparent; padding: 4px; }
.wallet-logo.zeus img { width: 48px; height: 48px; filter: brightness(0) saturate(100%) invert(43%) sepia(8%) saturate(670%) hue-rotate(202deg) brightness(97%) contrast(86%); }

.wallet-logo.wos { background: transparent; padding: 4px; }
.wallet-logo.wos img { width: 80px; height: 48px; filter: brightness(0) saturate(100%) invert(43%) sepia(8%) saturate(670%) hue-rotate(202deg) brightness(97%) contrast(86%); }

.wallet-logo.muun { background: transparent; padding: 4px; }
.wallet-logo.muun img { width: 48px; height: 48px; filter: brightness(0) saturate(100%) invert(43%) sepia(8%) saturate(670%) hue-rotate(202deg) brightness(97%) contrast(86%); }

/* Pause animation on hover for logos */
.wallet-logos-container:hover .wallet-logos-track {
    animation-play-state: paused;
}

.message-slide {
    animation: messageSlideIn 0.3s ease-out;
}

/* Animations */
@keyframes iconPulse {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

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

@keyframes walletLogosScroll {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Custom scrollbar */
.custom-scrollbar {
    scrollbar-width: thin;
    scrollbar-color: rgba(156, 163, 175, 0.5) transparent;
}

.custom-scrollbar::-webkit-scrollbar {
    width: 6px;
}

.custom-scrollbar::-webkit-scrollbar-track {
    background: transparent;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
    background-color: rgba(156, 163, 175, 0.5);
    border-radius: 3px;
}

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
    background-color: rgba(156, 163, 175, 0.7);
}

.accent-orange { color: #fb923c !important; }
.accent-green { color: #34d399 !important; }
.accent-red { color: #f87171 !important; }
.accent-yellow { color: #fbbf24 !important; }
.accent-purple { color: #a78bfa !important; }
.accent-gray { color: #9ca3af !important; }
.accent-cyan { color: #22d3ee !important; }
.accent-blue { color: #60a5fa !important; }

/* Ensure icons visible in dark backgrounds */
.text-secondary i {
    opacity: 0.8;
}