@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@300;400;500&display=swap');

        :root {
            --bg-color: #CCCCCC;
            --primary-black: #474747;
            --secondary-black: #333333;
            --card-bg: #F0F0F0;
            --image-bg: #333333;
            --accent-color: #474747;
        }

        body {
            margin: 0;
            font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            background-color: var(--bg-color);
            color: var(--primary-black);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            padding: 20px;
            box-sizing: border-box;
            line-height: 1.6;
            position: relative;
        }

        #app {
            width: 100%;
            max-width: 1200px;
            background-color: var(--card-bg);
            border-radius: 0;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            margin-bottom: 20px;
        }

        #app:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
        }

        #postcard-container {
            display: flex;
            flex-direction: row;
            width: 100%;
            min-height: 500px;
        }

        #image-column {
            flex: 3;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 40px;
            background-color: var(--image-bg);
            position: relative;
            overflow: hidden;
        }

        #image-column::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(51,51,51,0.8) 0%, rgba(71,71,71,0.6) 100%);
            z-index: 1;
        }

        #rover-image {
            max-width: 100%;
            max-height: 80vh;
            height: auto;
            border-radius: 0;
            display: block;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
            transform: scale(0.95);
            transition: transform 0.5s ease, box-shadow 0.5s ease;
            position: relative;
            z-index: 2;
        }

        #rover-image.loaded {
            transform: scale(1);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
        }

        #text-column {
            flex: 2;
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            background-color: var(--card-bg);
        }

        h1 {
            color: var(--primary-black);
            margin: 0 0 30px 0;
            font-size: 2.2em;
            font-weight: 600;
            letter-spacing: -0.5px;
            position: relative;
            padding-bottom: 15px;
        }

        h1::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background-color: var(--primary-black);
        }

        .info-group {
            margin-bottom: 25px;
            font-family: 'Fira Code', monospace;
            font-weight: 300;
        }

        .info-label {
            display: block;
            font-size: 0.85em;
            color: var(--secondary-black);
            margin-bottom: 5px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }

        .info-value {
            font-size: 1.1em;
            color: var(--primary-black);
            font-weight: 400;
        }

        .selector {
            margin-bottom: 20px;
            font-family: 'Fira Code', monospace;
        }

        select {
            background-color: #F0F0F0;
            border: 1px solid #474747;
            padding: 8px 12px;
            color: #474747;
            font-family: 'Fira Code', monospace;
            width: 100%;
            margin-top: 5px;
        }

        label {
            display: block;
            color: var(--secondary-black);
            font-size: 0.85em;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }

        #additional-info {
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid rgba(71, 71, 71, 0.1);
        }

        #generate-new-postcard {
            background-color: var(--accent-color);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 0;
            cursor: pointer;
            font-size: 1em;
            margin-top: 30px;
            transition: all 0.3s ease;
            align-self: flex-start;
            font-family: 'Fira Code', monospace;
            letter-spacing: 0.5px;
            position: relative;
            overflow: hidden;
        }

        #generate-new-postcard::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: 0.5s;
        }

        #generate-new-postcard:hover {
            background-color: var(--secondary-black);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }

        #generate-new-postcard:hover::before {
            left: 100%;
        }

        #loading-indicator {
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 80px;
            min-height: 500px;
            position: relative;
        }

        .loading-text {
            font-size: 1.2em;
            color: var(--primary-black);
            margin-top: 30px;
            text-align: center;
            font-family: 'Fira Code', monospace;
            opacity: 0;
            animation: fadeIn 1s ease 0.5s forwards;
        }

        .loading-subtext {
            font-size: 0.9em;
            color: var(--secondary-black);
            margin-top: 10px;
            font-family: 'Fira Code', monospace;
            opacity: 0;
            animation: fadeIn 1s ease 1s forwards;
        }

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

        .spinner {
            position: relative;
            width: 80px;
            height: 80px;
        }

        .spinner-circle {
            position: absolute;
            width: 100%;
            height: 100%;
            border: 3px solid transparent;
            border-radius: 0;
            mix-blend-mode: overlay;
        }

        .spinner-circle:nth-child(1) {
            border-top-color: var(--primary-black);
            animation: spin 1.5s linear infinite;
        }

        .spinner-circle:nth-child(2) {
            border-left-color: var(--secondary-black);
            animation: spin 2s linear infinite reverse;
        }

        .spinner-circle:nth-child(3) {
            border-right-color: var(--primary-black);
            animation: spin 2.5s linear infinite;
        }

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

        @media (max-width: 768px) {
            #postcard-container {
                flex-direction: column;
            }

            #image-column, #text-column {
                flex: none;
                width: 100%;
            }

            #image-column {
                padding: 20px;
                min-height: 300px;
            }

            #text-column {
                padding: 30px;
            }

            h1 {
                font-size: 1.8em;
            }
        }

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

        .card-visible {
            animation: cardFadeIn 0.8s ease forwards;
        }

        .status-indicator {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 0;
            background-color: #4CAF50;
            margin-right: 8px;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(0.95); opacity: 0.8; }
            50% { transform: scale(1.1); opacity: 1; }
            100% { transform: scale(0.95); opacity: 0.8; }
        }

        .footer {
            width: 100%;
            max-width: 1200px;
            text-align: center;
            font-family: 'Fira Code', monospace;
            color: var(--secondary-black);
            padding: 10px 0;
            margin-top: 20px;
        }

        .footer a {
            color: var(--secondary-black);
            text-decoration: none;
            border-bottom: 1px dotted var(--secondary-black);
        }

        #ascii-retry {
            position: fixed;
            top: 20px;
            left: 20px;
            font-family: 'Fira Code', monospace;
            color: #474747;
            background: #CCCCCC;
            padding: 5px 10px;
            border: 1px solid #474747;
            cursor: pointer;
            display: none;
            z-index: 100;
            font-size: 0.9em;
            line-height: 1.3;
        }