src/depth_anything_3/app/css_and_html.py

# flake8: noqa: E501

# Copyright (c) 2025 ByteDance Ltd. and/or its affiliates
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""
CSS and HTML content for the Depth Anything 3 Gradio application.
This module contains all the CSS styles and HTML content blocks
used in the Gradio interface.
"""

# CSS Styles for the Gradio interface
# Color palette:
# - Primary: #2563EB (Modern Blue)
# - Secondary: #14B8A6 (Vibrant Teal)
# - Accent: #F97316 (Electric Orange)
# - Neutrals: #F9FAFB to #111827
GRADIO_CSS = """
/* Add Font Awesome CDN with all styles including brands and colors */
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css');

/* Force light mode */
html, body, .gradio-container {
    color-scheme: light !important;
}

/* CSS Custom Properties for theming */
:root {
    --primary: #2563EB;
    --primary-light: #3B82F6;
    --primary-dark: #1D4ED8;
    --secondary: #14B8A6;
    --secondary-light: #2DD4BF;
    --secondary-dark: #0D9488;
    --accent: #F97316;
    --accent-light: #FB923C;
    --accent-dark: #EA580C;
    --neutral-50: #F9FAFB;
    --neutral-100: #F3F4F6;
    --neutral-200: #E5E7EB;
    --neutral-300: #D1D5DB;
    --neutral-400: #9CA3AF;
    --neutral-500: #6B7280;
    --neutral-600: #4B5563;
    --neutral-700: #374151;
    --neutral-800: #1F2937;
    --neutral-900: #111827;
}

/* Add custom styles for colored icons */
.fa-color-blue {
    color: var(--primary);
}

.fa-color-purple {
    color: #8B5CF6;
}

.fa-color-cyan {
    color: var(--secondary);
}

.fa-color-green {
    color: #10B981;
}

.fa-color-yellow {
    color: var(--accent);
}

.fa-color-red {
    color: #EF4444;
}

.link-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 500;
    transition: all 0.3s ease;
}

/* Dark mode theme */
@media (prefers-color-scheme: dark) {
    html, body {
        background: var(--neutral-800);
        color: var(--neutral-50);
    }

    .gradio-container {
        background: var(--neutral-800);
        color: var(--neutral-50);
    }

    .link-btn {
        background: rgba(20, 184, 166, 0.2);
        color: white;
        border: 1px solid rgba(20, 184, 166, 0.4);
    }

    .link-btn:hover {
        background: rgba(20, 184, 166, 0.35);
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(20, 184, 166, 0.25);
    }

    .tech-bg {
        background: linear-gradient(135deg, var(--neutral-900), var(--neutral-800));
        position: relative;
        overflow: hidden;
    }

    .tech-bg::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background:
            radial-gradient(circle at 20% 80%, rgba(37, 99, 235, 0.15) 0%, transparent 50%),
            radial-gradient(circle at 80% 20%, rgba(20, 184, 166, 0.15) 0%, transparent 50%),
            radial-gradient(circle at 40% 40%, rgba(249, 115, 22, 0.1) 0%, transparent 50%);
        animation: techPulse 8s ease-in-out infinite;
    }

    .gradio-container .panel,
    .gradio-container .block,
    .gradio-container .form {
        background: rgba(0, 0, 0, 0.3);
        border: 1px solid rgba(20, 184, 166, 0.2);
        border-radius: 10px;
    }

    .gradio-container * {
        color: var(--neutral-50);
    }

    .gradio-container label {
        color: var(--neutral-200);
    }

    .gradio-container .markdown {
        color: var(--neutral-200);
    }
}

/* Light mode theme */
@media (prefers-color-scheme: light) {
    html, body {
        background: var(--neutral-50);
        color: var(--neutral-800);
    }

    .gradio-container {
        background: var(--neutral-50);
        color: var(--neutral-800);
    }

    .tech-bg {
        background: linear-gradient(135deg, var(--neutral-50), var(--neutral-100));
        position: relative;
        overflow: hidden;
    }

    .link-btn {
        background: rgba(20, 184, 166, 0.12);
        color: var(--neutral-700);
        border: 1px solid rgba(20, 184, 166, 0.3);
    }

    .link-btn:hover {
        background: rgba(20, 184, 166, 0.2);
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(20, 184, 166, 0.2);
    }

    .tech-bg::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background:
            radial-gradient(circle at 20% 80%, rgba(37, 99, 235, 0.08) 0%, transparent 50%),
            radial-gradient(circle at 80% 20%, rgba(20, 184, 166, 0.08) 0%, transparent 50%),
            radial-gradient(circle at 40% 40%, rgba(249, 115, 22, 0.06) 0%, transparent 50%);
        animation: techPulse 8s ease-in-out infinite;
    }

    .gradio-container .panel,
    .gradio-container .block,
    .gradio-container .form {
        background: rgba(255, 255, 255, 0.9);
        border: 1px solid rgba(20, 184, 166, 0.2);
        border-radius: 10px;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    }

    .gradio-container * {
        color: var(--neutral-800);
    }

    .gradio-container label {
        color: var(--neutral-600);
    }

    .gradio-container .markdown {
        color: var(--neutral-600);
    }
}




@keyframes techPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

/* Custom log with tech gradient */
.custom-log * {
    font-style: italic;
    font-size: 22px !important;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    background-size: 400% 400%;
    -webkit-background-clip: text;
    background-clip: text;
    font-weight: bold !important;
    color: transparent !important;
    text-align: center !important;
    animation: techGradient 3s ease infinite;
}

@keyframes techGradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes metricPulse {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes pointcloudPulse {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes camerasPulse {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes gaussiansPulse {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Special colors for key terms - Global styles with gradient animations */
.metric-text {
    background: linear-gradient(135deg, #10B981, #059669);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent !important;
    font-weight: 700;
    animation: metricPulse 3s ease infinite;
}

.pointcloud-text {
    background: linear-gradient(135deg, #10B981, #059669);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent !important;
    font-weight: 700;
    animation: pointcloudPulse 3s ease infinite;
}

.cameras-text {
    background: linear-gradient(135deg, #F97316, #EA580C);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent !important;
    font-weight: 700;
    animation: camerasPulse 3s ease infinite;
}

.gaussians-text {
    background: linear-gradient(135deg, #2563EB, #1D4ED8);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent !important;
    font-weight: 700;
    animation: gaussiansPulse 3s ease infinite;
}

.example-log * {
    font-style: italic;
    font-size: 16px !important;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent !important;
}

#my_radio .wrap {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    align-items: center;
}

#my_radio .wrap label {
    display: flex;
    width: 50%;
    justify-content: center;
    align-items: center;
    margin: 0;
    padding: 10px 0;
    box-sizing: border-box;
}

/* Align navigation buttons with dropdown bottom */
.navigation-row {
    display: flex !important;
    align-items: flex-end !important;
    gap: 8px !important;
}

.navigation-row > div:nth-child(1),
.navigation-row > div:nth-child(3) {
    align-self: flex-end !important;
}

.navigation-row > div:nth-child(2) {
    flex: 1 !important;
}

/* Make thumbnails clickable with pointer cursor */
.clickable-thumbnail img {
    cursor: pointer !important;
}

.clickable-thumbnail:hover img {
    cursor: pointer !important;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

/* Make thumbnail containers narrower horizontally */
.clickable-thumbnail {
    padding: 5px 2px !important;
    margin: 0 2px !important;
}

.clickable-thumbnail .image-container {
    margin: 0 !important;
    padding: 0 !important;
}

.scene-info {
    text-align: center !important;
    padding: 5px 2px !important;
    margin: 0 !important;
}
"""


def get_header_html(logo_base64=None):
    """
    Generate the main header HTML with logo and title.

    Args:
        logo_base64 (str, optional): Base64 encoded logo image

    Returns:
        str: HTML string for the header
    """
    return """
    <div class="tech-bg" style="text-align: center; margin-bottom: 5px; padding: 40px 20px; border-radius: 15px; position: relative; overflow: hidden;">
        <div style="position: relative; z-index: 2;">
            <h1 style="margin: 0; font-size: 3.5em; font-weight: 700;
                background: linear-gradient(135deg, #2563EB, #14B8A6);
                background-size: 400% 400%;
                -webkit-background-clip: text;
                background-clip: text;
                color: transparent;
                animation: techGradient 3s ease infinite;
                text-shadow: 0 0 30px rgba(20, 184, 166, 0.4);
                letter-spacing: 2px;">
                Depth Anything 3
            </h1>
            <p style="margin: 15px 0 0 0; font-size: 2.16em; font-weight: 300;" class="header-subtitle">
                Recovering the Visual Space from Any Views
            </p>
            <div style="margin-top: 20px;">
                <a href="https://depth-anything-3.github.io" target="_blank" class="link-btn" style="margin: 0.5em;">
                    <i class="fas fa-globe" style="margin-right: 8px;"></i> Project Page
                </a>
                <a href="https://arxiv.org/abs/2406.09414" target="_blank" class="link-btn" style="margin: 0.5em;">
                    <i class="fas fa-file-pdf" style="margin-right: 8px;"></i> Paper
                </a>
                <a href="https://github.com/Aedelon/awesome-depth-anything-3" target="_blank" class="link-btn" style="margin: 0.5em; background: var(--secondary); color: white; border: none; font-weight: 600;">
                    <i class="fab fa-github" style="margin-right: 8px;"></i> Awesome Optimized Fork
                </a>
                <a href="https://github.com/ByteDance-Seed/Depth-Anything-3" target="_blank" class="link-btn" style="margin: 0.5em;">
                    <i class="fab fa-github" style="margin-right: 8px;"></i> Original
                </a>
            </div>
        </div>
    </div>

    <style>
        .header-subtitle {
            color: #4B5563;
        }
        .tech-bg {
            background: linear-gradient(135deg, rgba(20, 184, 166, 0.08) 0%, rgba(37, 99, 235, 0.08) 100%) !important;
        }
    </style>
    <script>
        document.body.classList.add('light');
        document.documentElement.classList.add('light');
    </script>
    """


def get_description_html():
    """
    Generate the main description and getting started HTML.

    Returns:
        str: HTML string for the description
    """
    return """
    <div class="description-container" style="padding: 25px; border-radius: 15px; margin: 0 0 20px 0;">
        <h2 class="description-title" style="margin-top: 0; font-size: 1.6em; text-align: center;">
            <i class="fas fa-bullseye fa-color-red" style="margin-right: 8px;"></i> What This Demo Does
        </h2>
        <div class="description-content" style="padding: 20px; border-radius: 10px; margin: 15px 0; text-align: center;">
            <p class="description-main" style="line-height: 1.6; margin: 0; font-size: 1.45em;">
                <strong>Upload images or videos</strong> → <strong>Get <span class="metric-text">Metric</span> <span class="pointcloud-text">Point Clouds</span>, <span class="cameras-text">Cameras</span> and <span class="gaussians-text">Novel Views</span></strong> → <strong>Explore in 3D</strong>
            </p>
        </div>

        <div style="text-align: center; margin-top: 15px;">
            <p class="description-tip" style="font-style: italic; margin: 0;">
                <i class="fas fa-lightbulb fa-color-yellow" style="margin-right: 8px;"></i> <strong>Tip:</strong> Landscape-oriented images or videos are preferred for best 3D recovering.
            </p>
        </div>
    </div>

    <style>
        @media (prefers-color-scheme: dark) {
            .description-container {
                background: linear-gradient(135deg, rgba(20, 184, 166, 0.08) 0%, rgba(37, 99, 235, 0.08) 100%);
                border: 1px solid rgba(20, 184, 166, 0.2);
            }
            .description-title { color: #14B8A6; }
            .description-content { background: rgba(0, 0, 0, 0.3); }
            .description-main { color: #E5E7EB; }
            .description-text { color: #D1D5DB; }
            .description-tip { color: #D1D5DB; }
        }

        @media (prefers-color-scheme: light) {
            .description-container {
                background: linear-gradient(135deg, rgba(20, 184, 166, 0.05) 0%, rgba(37, 99, 235, 0.05) 100%);
                border: 1px solid rgba(20, 184, 166, 0.2);
            }
            .description-title { color: #14B8A6; }
            .description-content { background: transparent; }
            .description-main { color: #1F2937; }
            .description-text { color: #4B5563; }
            .description-tip { color: #4B5563; }
        }
    </style>
    """


def get_acknowledgements_html():
    """
    Generate the acknowledgements section HTML.

    Returns:
        str: HTML string for the acknowledgements
    """
    return """
    <div style="background: linear-gradient(135deg, rgba(20, 184, 166, 0.08) 0%, rgba(37, 99, 235, 0.08) 100%);
                padding: 25px; border-radius: 15px; margin: 20px 0; border: 1px solid rgba(20, 184, 166, 0.2);">
        <h3 style="color: #14B8A6; margin-top: 0; text-align: center; font-size: 1.4em;">
            <i class="fas fa-trophy fa-color-yellow" style="margin-right: 8px;"></i> Research Credits & Acknowledgments
        </h3>

        <div style="display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 15px 0;">
            <!-- Original Research Section (Left) -->
            <div style="text-align: center;">
                <h4 style="color: #2563EB; margin: 10px 0;"><i class="fas fa-flask fa-color-green" style="margin-right: 8px;"></i> Original Research</h4>
                <p style="color: #9CA3AF; margin: 5px 0;">
                    <a href="https://depth-anything-3.github.io" target="_blank"
                       style="color: #14B8A6; text-decoration: none; font-weight: 600;">
                        Depth Anything 3
                    </a>
                </p>
            </div>

            <!-- Previous Versions Section (Right) -->
            <div style="text-align: center;">
                <h4 style="color: #2563EB; margin: 10px 0;"><i class="fas fa-history fa-color-blue" style="margin-right: 8px;"></i> Previous Versions</h4>
                <div style="display: flex; flex-direction: row; gap: 15px; justify-content: center; align-items: center;">
                    <p style="color: #9CA3AF; margin: 0;">
                        <a href="https://huggingface.co/spaces/LiheYoung/Depth-Anything" target="_blank"
                           style="color: #14B8A6; text-decoration: none; font-weight: 600;">
                            Depth-Anything
                        </a>
                    </p>
                    <span style="color: #9CA3AF;">•</span>
                    <p style="color: #9CA3AF; margin: 0;">
                        <a href="https://huggingface.co/spaces/depth-anything/Depth-Anything-V2" target="_blank"
                           style="color: #14B8A6; text-decoration: none; font-weight: 600;">
                            Depth-Anything-V2
                        </a>
                    </p>
                </div>
            </div>
        </div>

        <!-- HF Demo Adapted from - Centered at the bottom of the whole block -->
        <div style="margin-top: 20px; padding-top: 15px; border-top: 1px solid rgba(20, 184, 166, 0.2); text-align: center;">
            <p style="color: #6B7280; font-size: 0.9em; margin: 0;">
                <i class="fas fa-code-branch" style="margin-right: 5px; color: #9CA3AF;"></i> HF demo adapted from <a href="https://huggingface.co/spaces/facebook/map-anything" target="_blank" style="color: inherit; text-decoration: none;">Map Anything</a>
            </p>
        </div>
    </div>
    """


def get_gradio_theme():
    """
    Get the configured Gradio theme with modern teal/blue colors.

    Color palette:
    - Primary: Teal (#14B8A6)
    - Secondary: Blue (#2563EB)
    - Accent: Orange (#F97316)
    - Neutrals: Clean grays (#F9FAFB to #111827)

    Returns:
        gr.themes.Base: Configured Gradio theme
    """
    import gradio as gr

    return gr.themes.Base(
        # Primary hue: Teal
        primary_hue=gr.themes.Color(
            c50="#F0FDFA",
            c100="#CCFBF1",
            c200="#99F6E4",
            c300="#5EEAD4",
            c400="#2DD4BF",
            c500="#14B8A6",
            c600="#0D9488",
            c700="#0F766E",
            c800="#115E59",
            c900="#134E4A",
            c950="#042F2E",
        ),
        # Secondary hue: Blue
        secondary_hue=gr.themes.Color(
            c50="#EFF6FF",
            c100="#DBEAFE",
            c200="#BFDBFE",
            c300="#93C5FD",
            c400="#60A5FA",
            c500="#3B82F6",
            c600="#2563EB",
            c700="#1D4ED8",
            c800="#1E40AF",
            c900="#1E3A8A",
            c950="#172554",
        ),
        # Neutral hue: Clean grays
        neutral_hue=gr.themes.Color(
            c50="#F9FAFB",
            c100="#F3F4F6",
            c200="#E5E7EB",
            c300="#D1D5DB",
            c400="#9CA3AF",
            c500="#6B7280",
            c600="#4B5563",
            c700="#374151",
            c800="#1F2937",
            c900="#111827",
            c950="#030712",
        ),
    )


# Measure tab instructions HTML
MEASURE_INSTRUCTIONS_HTML = """
### Click points on the image to compute distance.
> <i class="fas fa-triangle-exclamation fa-color-red" style="margin-right: 5px;"></i> Metric scale estimation is difficult on aerial/drone images.
"""