@import url('https://cdn.jsdelivr.net/npm/@fontsource/geist-sans@latest/index.css');
@import url('https://fonts.googleapis.com/css2?family=Google+Sans:wght@100..900&display=swap');

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

body {
    font-family: 'Geist Sans', 'Google Sans', sans-serif;
    background: linear-gradient(135deg, #fafafa 0%, #f4f4f5 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 10px;
    align-items: center;
    justify-content: center;
    color: #171717;
    line-height: 1.6;
}

.main-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.container {
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 20px rgba(0, 0, 0, 0.04);
    border: 1px solid #e5e7eb;
    padding: 40px;
    width: 100%;
    max-width: 800px;
    text-align: center;
}

.tutorial-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 2px;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: scaleIn 0.3s ease-out;
}

.tutorial-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 2px;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: scaleIn 0.3s ease-out;
}

.tutorial-icon svg {
    width: 32px;
    height: 32px;
    color: white;
}

@keyframes scaleIn {
    0% { transform: scale(0); }
    100% { transform: scale(1); }
}

.title {
    font-size: 28px;
    font-weight: 600;
    color: #000000;
    margin-bottom: 10px;
    letter-spacing: -0.025em;
}

.subtitle {
    font-size: 16px;
    color: #666666;
    margin-bottom: 18px;
    font-weight: 400;
}

.tutorial-content {
    text-align: left;
    margin-bottom: 32px;
}

.tutorial-section {
    margin-bottom: 32px;
    max-width: 700px;
    margin: 0 auto 20px;
}

.section-title {
    font-size: 18px;
    font-weight: 600;
    color: #1f2937;
    margin: 0 0 16px 0;
    text-align: center;
}

.tutorial-text {
    font-size: 14px;
    color: #4b5563;
    margin-bottom: 20px;
    text-align: center;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.intro-text {
    font-size: 14px;
    color: #4b5563;
    margin: 0 0 20px 0;
    text-align: center;
    line-height: 1.5;
}

.database-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 20px;
}

.database-item {
    padding: 0;
    text-align: left;
}

.database-title {
    font-size: 14px;
    font-weight: 600;
    color: #374151;
    margin: 0 0 6px 0;
}

.database-description {
    font-size: 14px;
    color: #6b7280;
    margin: 0;
    line-height: 1.5;
}

.conclusion-text {
    font-size: 14px;
    color: #4b5563;
    margin: 0;
    text-align: center;
    font-style: italic;
    line-height: 1.5;
}

.image-container {
    border-radius: 8px;
    padding: 0px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    width: 100%;
    overflow: hidden;
}

.placeholder-image {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    text-align: center;
    width: 100%;
}

.placeholder-image img {
    margin-bottom: 5px;
    max-width: 100%;
    height: auto;
}

.placeholder-text {
    font-size: 14px;
    font-weight: 500;
}

.image-caption {
    font-size: 12px;
    color: #64748b;
    text-align: center;
    margin-top: 8px;
    font-style: italic;
}

.action-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 32px;
}

.primary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: #000000;
    color: #ffffff;
    text-decoration: none;
    border: none;
    border-radius: 8px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    letter-spacing: -0.01em;
    cursor: pointer;
}

.primary-button:hover {
    background: #171717;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.secondary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: #f8fafc;
    color: #475569;
    text-decoration: none;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    letter-spacing: -0.01em;
    cursor: pointer;
}

.secondary-button:hover {
    background: #f1f5f9;
    border-color: #cbd5e1;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.green-button {
    background: #10b981;
    color: #ffffff;
}

.green-button:hover {
    background: #059669;
}

.icon {
    width: 16px;
    height: 16px;
}

.progress-indicator {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 7px;
    margin-bottom: 10px;
    text-align: center;
}

.progress-bar {
    background: #e2e8f0;
    height: 6px;
    border-radius: 3px;
    margin-bottom: 8px;
    overflow: hidden;
}

.progress-fill {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    height: 100%;
    width: 33%;
    border-radius: 3px;
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 12px;
    color: #64748b;
    font-weight: 500;
}

.footer {
    width: 100%;
    padding: 20px 10px;
    text-align: center;
    background: transparent;
    margin-top: 20px;
}

.copyright {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: #6b7280;
    font-size: 13px;
    font-weight: 400;
}

.designed-by {
    color: #9ca3af;
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo {
    height: 20px;
    width: auto;
    opacity: 0.8;
    transition: opacity 0.2s ease;
}

.logo:hover {
    opacity: 1;
}

.top-logo {
    width: 100%;
    text-align: center;
    padding: 20px 10px 10px;
}

.top-logo-img {
    max-height: 60px;
    width: auto;
    opacity: 0.95;
    transition: opacity 0.2s ease;
}

.top-logo-img:hover {
    opacity: 1;
}

.tagline {
    font-size: 28px;
    text-align: center;
    max-width: 100%;
    width: auto;
    margin: 0 auto;
    color: #ffcc00;
    text-shadow:
        0 0 5px #ff6600,
        0 0 10px #ff3300,
        0 0 20px #ff0000,
        0 0 30px #cc0000,
        0 0 40px #990000;
    animation: flicker 1.5s infinite alternate;
    word-wrap: break-word;
    hyphens: auto;
}

@keyframes flicker {
    0% {
        text-shadow:
            0 0 5px #ff6600,
            0 0 10px #ff3300,
            0 0 20px #ff0000,
            0 0 30px #cc0000,
            0 0 40px #990000;
        transform: scale(1);
    }
    50% {
        text-shadow:
            0 0 2px #ff6600,
            0 0 8px #ff3300,
            0 0 15px #ff0000,
            0 0 25px #cc0000,
            0 0 35px #990000;
        transform: scale(1.01);
    }
    100% {
        text-shadow:
            0 0 3px #ffcc00,
            0 0 6px #ff9900,
            0 0 10px #ff3300,
            0 0 20px #cc0000,
            0 0 30px #990000;
        transform: scale(0.99);
    }
}

@media (max-width: 640px) {
    .container {
        padding: 24px;
    }

    .title {
        font-size: 24px;
    }

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

    .image-container {
        padding: 0px;
        min-height: 150px;
    }

    .copyright {
        flex-direction: column;
        gap: 6px;
    }

    .footer {
        padding: 15px 10px;
    }
}

@media screen and (max-width: 768px) {
    .tagline {
        font-size: 24px;
    }
}

@media screen and (max-width: 480px) {
    .tagline {
        font-size: 24px;
        line-height: 1.3;
    }
}