:root {
    --primary-bg: #121212;
    --secondary-bg: #1e1e1e;
    --text-color: #ffffff;
    --input-bg: #252525;
    --border-color: #333;
    --button-bg: linear-gradient(to right, #3a3a3a, #555);
    --button-hover-bg: linear-gradient(to right, #444, #666);
}

.light-theme {
    --primary-bg: #ffffff;
    --secondary-bg: #f8f9fa;
    --text-color: #000000;
    --input-bg: #ffffff;
    --border-color: #ccc;
    --button-bg: linear-gradient(to right, #ddd, #bbb);
    --button-hover-bg: linear-gradient(to right, #ccc, #aaa);
}

body {
    background-color: var(--primary-bg);
    color: var(--text-color);
    font-family: 'Arial', sans-serif;
    transition: background 0.3s, color 0.3s;
}

.top-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--secondary-bg);
    padding: 12px 24px;
    border-bottom: 1px solid var(--border-color);
}

.nav-links .nav-link,
.theme-toggle .theme-btn {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.3s;
    text-decoration: none;
}

    .nav-links .nav-link:hover,
    .theme-toggle .theme-btn:hover {
        text-decoration: underline;
    }

.theme-toggle {
    position: absolute;
    top: 15px;
    right: 15px;
}

.form-container {
    width: 80%;
    padding: 30px;
    background-color: var(--secondary-bg);
    border-radius: 8px;
    box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.2);
    text-align: center;
    margin: 100px auto;
}

.logo {
    width: 100px;
    margin-bottom: 15px;
}

.error-message {
    color: red;
    font-size: 14px;
    margin-top: 10px;
    text-align: center;
}

/* Input Layout */
.input-group {
    margin-bottom: 15px;
    text-align: left;
    display: flex;
    flex-direction: column;
}

    .input-group label {
        font-size: 14px;
        margin-bottom: 5px;
        font-weight: bold;
    }

    .input-group input,
    .input-group textarea,
    .input-group select,
    .input-group span {
        width: 100%;
        padding: 10px;
        background-color: var(--input-bg);
        border: 1px solid var(--border-color);
        border-radius: 5px;
        color: var(--text-color);
        font-size: 16px;
        transition: all 0.3s;
        margin-top: 5px;
    }

    .input-group span {
        font-size: 18px;
        background-color: transparent;
        border: none;
    }

    .input-group input:focus,
    .input-group textarea:focus,
    .input-group select:focus {
        outline: none;
        border-color: #aaa;
    }

    .input-group select {
        appearance: none;
        background-image: url("data:image/svg+xml,%3Csvg fill='%23FFFFFF' height='24' viewBox='0 0 24 24' width='24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
        background-repeat: no-repeat;
        background-position: right 12px center;
        background-size: 16px 16px;
        padding-right: 40px;
    }

.light-theme .input-group select {
    background-image: url("data:image/svg+xml,%3Csvg fill='%23000000' height='24' viewBox='0 0 24 24' width='24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
}

.input-group input[type="file"] {
    padding: 10px;
    font-size: 14px;
}

    .input-group input[type="file"]::file-selector-button {
        padding: 8px 12px;
        margin-right: 10px;
        border: none;
        background: var(--button-bg);
        color: var(--text-color);
        cursor: pointer;
        transition: background 0.3s;
        border-radius: 5px;
    }

        .input-group input[type="file"]::file-selector-button:hover {
            background: var(--button-hover-bg);
        }


/* Buttons */
.login-btn,
.upload-btn {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 5px;
    background: var(--button-bg);
    color: white;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s;
}

    .login-btn:hover,
    .upload-btn:hover {
        background: var(--button-hover-bg);
    }

    .upload-btn:disabled {
        background: var(--border-color);
        cursor: not-allowed;
    }

.cancel-btn {
    padding: 10px 20px;
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s, color 0.3s;
}

    .cancel-btn:hover {
        background-color: var(--input-bg);
    }

.form-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
}

/* Date Picker Icon */
input[type="date"] {
    color: var(--text-color);
}

    input[type="date"]::-webkit-calendar-picker-indicator {
        filter: brightness(0) invert(1);
        color: var(--text-color);
        cursor: pointer;
    }

body.light-theme input[type="date"]::-webkit-calendar-picker-indicator {
    filter: none;
}

/* Spinner */
.loading-spinner {
    margin: 10px auto;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--text-color);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
}

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

    100% {
        transform: rotate(360deg);
    }
}

/* Chart Image Preview */
.chart-preview {
    margin-top: 20px;
    text-align: center;
}

    .chart-preview label {
        display: block;
        font-weight: bold;
        margin-bottom: 10px;
        color: var(--text-color);
    }

    .chart-preview img {
        max-width: 100%;
        height: auto;
        border-radius: 8px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    }

/* Input Grid for Responsive Inline Fields */
.input-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}


/* Table*/
.list {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

    .list th,
    .list td {
        padding: 10px;
        border-bottom: 1px solid var(--border-color);
        color: var(--text-color);
    }

    .list tr:hover {
        background-color: var(--secondary-bg);
    }



.no-data-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-top: 40px;
    text-align: center;
    gap: 15px;
    min-height: 100px;
    color: var(--text-color);
}

.add-btn {
    padding: 10px 20px;
    background: var(--button-bg);
    color: var(--text-color);
    border: none;
    border-radius: 5px;
    font-size: 16px;
    text-decoration: none;
    font-weight: bold;
    transition: background 0.3s;
}

.add-btn:hover {
        background: var(--button-hover-bg);
    }

.search-button-wrapper {
    display: flex;
    justify-content: center;
    margin-top: 15px;
}

.search-btn {
    padding: 10px 20px;
    background: var(--button-bg);
    color: var(--text-color);
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    width: auto;
    transition: background 0.3s;
}

.search-btn:hover {
        background: var(--button-hover-bg);
}