/* Hide Streamlit default UI elements */
#MainMenu, header, footer {
    visibility: hidden;
}

/* Full-screen center layout */
.stApp {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 10;
    padding: 10;
}

/* Global dark theme base */
body {
    background-color: #343541; /* ChatGPT dark gray */
    color: #ececf1;            /* Light neutral for text */
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 10;
    padding: 10;
}

/* Container centering */
.centered-container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    width: 100vw;
}

/* ChatGPT-style button */
.stButton > button {
    background-color: #444654 !important;
    color: #ececf1 !important;
    border: 1px solid #5c5f72 !important;
    border-radius: 999px !important;
    padding: 0.5rem 1.25rem !important;
    font-weight: 500;
    transition: background-color 0.2s ease, transform 0.1s ease;
    position: relative;
}

.stButton > button:hover {
    background-color: #565869 !important;
    transform: scale(1.03);
}

/* Sidebar styling */
[data-testid="stSidebar"] {
    background-color: #202123;
    color: #ececf1;
    border-right: 1px solid #2d2f36;
    min-width: 140px;
    max-width: 250px;
    transition: all 0.3s ease;
}

[data-testid="stSidebar"][aria-expanded="false"] {
    margin-left: -250px;
}

[data-testid="stSidebar"] h1,
[data-testid="stSidebar"] h2,
[data-testid="stSidebar"] h3 {
    color: #ececf1;
}

/* Markdown and text elements */
.stMarkdown, .stCaption, .stHeader {
    color: #ececf1;
}

/* Dropdown styling */
select {
    background-color: #3e3f4b;
    color: #ececf1;
    border: 1px solid #5c5f72;
    border-radius: 6px;
    padding: 6px 10px;
}

/* Selectbox refinements */
.stSelectbox {
    cursor: pointer !important;
}
.stSelectbox input {
    cursor: pointer !important;
    caret-color: transparent !important;
}
.stSelectbox div[data-baseweb="select"] {
    cursor: pointer !important;
}
.stSelectbox [role="option"] {
    cursor: pointer !important;
}
.stSelectbox ::selection {
    background: transparent !important;
}

/* General container */
.block-container {
    padding: 15px !important;
    margin: 15px !important;
    max-width: 100% !important;
}

/* Progress bar */
.stProgress > div > div > div {
    background-color: #10a37f !important; /* ChatGPT green */
}
.stProgress > div > div {
    background-color: #3e3f4b !important;
    height: 10px !important;
    border-radius: 5px;
}

/* Loading or status text */
.st-emotion-cache-1q7spjk {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #ececf1 !important;
    font-size: 1.1rem;
    margin-bottom: 15px;
}

/* Optional animation (retained from your original) */
.rotate {
    display: inline-block;
    color: #10a37f;
    animation: rotation 2s infinite linear;
}
@keyframes rotation {
    from { transform: rotate(0deg); }
    to { transform: rotate(359deg); }
}

/* Centered button containers */
.centered-button-container,
.button-container {
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}